General Science part 1

 Animal never drink water in its entire life is - Kangaroo rat

Physical phase of life is called - Protoplasm 

Protoplasm consist of (cytoplasm + Nuclear) bcoz In cytoplasm we find cell memberance but absence of nuclear 

The largest cell is - Egg of an Ostrich 

Largest human cell - ovum 

Nerve cell is the longest cell 

Skin is the largest organ of the body 

Phagocyte of the cell in the body that engulf foreign particles like bacteria 

639 number of muscle in human 

206 number of bone in human 

Life span of RBC(Red blood cell) - 120 days 

Life span of WBC(White blood cell) - 2 to 15 days 

Fish has two chambered heart 

Snake - 3 heart (2 artium and 1 ventricle )

Blue Whale -4 chambered heart 

Crocodile - 4 chambered heart (2artium and 2 ventricle) 

24 ribs in human body 

Greater than 24 ribs (>24 ribs called super numeracy ribs) 

Less than 24 ribs (<24 ribs called angensis ribs) 

Smallest flightless bird - Kiwi 

Study of lizard - Saurology 

Study of mosquito - entomology 

Study of snake - Herpetology 

Study of Cockroach - Blattology 

Hormones are produced by Endocrine glands 

Pituitary gland is called master gland 

ADH - Anti Diuretic hormone 

Normal value of blood sugar in the body - 

80 to 120 mg /100ml of blood 

Largest blood vessels in the body - Aorta (supply oxygen rich blood to organ of body) 

Largest artery of the body - Aorta 

Generally vein give less oxygen blood to heart and Artery take fresh oxygen blood from heart 

But two exception is there 

* Pulmonary artery carries impure blood 

* pulmonary vein carries pure blood 

Christian Bernard famous for world's first heart transplant 

David Bennett in USA to use pig heart and death after 2month

Glass is not an allotrope of carbon 

Allotrope of carbon are - 

Diamond, Graphite, Fullerenes,Graphene 

Sulfuric acid - H2SO4

Sulphate Dioxide - SO2

Sodium Sulphate - Na2SO4

Potassium Sulphate - K2SO4

Periodic table arrangement - H,He,Li,Be,B

7 number of periods/ row in which periodic table divided 

18 column /group in which periodic table divided 

Modern periodic table given by - Mosley (1913) and arrange periodic table according to atomic number 

Old periodic table given by - Mandelee

As per atomic mass 

Noble gas - Helium, Neon ,Agon, Kripton, Xenon,redon

Not noble gas - Hydrogen 

Graphite is not a mixture 

Alloys are - Harder than then the pure metal 

The process in which oxygen is removed - Reduction 

The process in which oxygen is added - Oxidation 

Rusting is an oxidation reaction 

All acid are corrosive when they are strong 

Metal carbonate - CaCo3

Acid - HCL 

Salt - CaCl2

Water -H2O

Carbon dioxide - CO2

When a metal carbonate react with acid form salt ,water and Carbon Dioxide 

CaCo3 + 2HCL----- > CaCl2 +H2O+ CO2

In periodic table elements are arranged according to their Atomic number 

Old periodic table elements are arranged according to their Mass number 

Atomic number is represented by Z

Mass Number is represented by A

Mass Number (A)  = Z + N (atomic number + Nuton) 

Hydrochloric Acid helps for digestion

PH value of Human blood is 7.4

Neutral PH value is 7

less than 7 is Acid and more than 7 is base 

lemon juice ph value - 2

A solution with ph value 9 considered - Alkaline 

Vinegar ph value approx is 3

gastric acid ph value in human body is 3

A solution of Ph 12 consider as Alkaline 

Ph 1 indicate A strong acid 

Blood ph range is 7.35 - 7.45

The ph case measure in the concentration of Hydrogen ions

Ph scale range from - 0 - 14

ph 14 indicate a strong base 

if ph of a  solution change from 3 to 5 it means it decrease acidity 

Distilled Water ph value closest to 7

Hydrochloric Acid consider as strong Acid 

ph of Human saliva is  5 - 6

ph value of tear is 7.2

Ph value of skin is 5.5 acid mantle. 

Ph value of urine -4.4 to 8

Ph value of bile juice -8 to 8.6

ph value of blood is 7.4

Athlete's foot is a fungal disease cause by fungus 

Fungus Disease -

S A  B A R 

Scabies, Asthama, Baldnes(hairfall) ,Athlete's foot, Ring Worm 

Hemoglobin is a protein 

Vitamin D most rapidly manufactured in our body 

Lack of vitamin D disease happen -

Osteoperosis and facture

Latic Acid (CH3CHCOOH) 

Fatigue in body lead to (Latic Acid (CH3CHCOOH) accumulation)

Escape velocity of earth is 11.2km/sec

Escape velocity of Sun is 618km/sec

Escape velocity of Moon is 2.38 km/sec

Anemometer measure - speed of wind 

Ammeter measure - Electric Current 

Tachometer measure - Speed of Rotation 

Pyrometer measure - high temperature 

The process of separate water from mixture of alcoholwater is called distillation 

Human has 1 heart divided in 4 chambers -

Left and right atrium, left and right ventricle 

Chromium + Iron = rust free 

Study of flower - Anthology 

Study of grass - Agrostology

Fructose is a major component of Honey 

The velocity of sound is minimum in Vacuum 

In human 1 ear present 3 bone 

So 2ears present 6 bone 

*malleus,  * Incus,  * Stapes 

Stapes in ear is the smallest bone in human body 

Satellite moving in its orbit around earth due to Centripetal Force 

Time period of a pendulum is - Depends on its length 

T = 2 * pie or 22/7√L/ g

In case of rusting the weight of Iron increase 

Melbomian gland is located in eye 

The weight of our body made of from Bones, parts of body,  parts of skin ,from water 

But mostly weight made of from water 

Malaria disease affect (spleen )organ of our body 

Silver Iodide use for Artificial Rain 

Noble gas are - helium, Neon,

Argon,Cryptum,Xeon,Redon 

Polygraph used to detecting lie 

ELISA test for Aids 

A man don't know when to stop eating is suffering from ( Bulima )

(Rectifier) used to convert AC to DC - Alternative current to direct current 

(Inverter) used to convert DC to AC - Direct current to Alternative current 

(Octane number )used for measuring the quality of (Petrol) 

Baking Soda - Sodium Bicarbonate (NaHCO3)

Washing Soda - Na2CO3

Sky appears blue because scattering of light 

Not soluble in water are - Vitamin (ADEK)

Age of tree determine by growth of Rings 

Uric Acid disposition cause joint pain or( Arthritis) in human body 

Lime Stone is Calcium Carbonate (CaCO3)

Mixture / Alloy Of Copper + Tin is (Bronze) 

Copper + zinc = Brass 

Density = Mass/ volume 

Density of milk measured by Lactometer

Measure specific Gravity by Hydrometer 

Measure temperature by Thermometer 

In Automobiles, Hydraulic brake is works on - Pascal's law (p = F/A pressure = force per unit area) 

LPG liquid petroleum gas include main component Ethane, Propane, Butane 

Lack of Insulin cause diabetes 

No. of RBC count in an adult male is - 

5 Million

RBC life span - 120 days 

WBC life span -12 to 20 days 

One Barrel of oil is 159 litre

Cellulose in grass so human can't digest it if eat grass 

Ultrasound Scanner uses Ultrasonic waves for getting image of internal organs of Human  body 

MRI Scanner -Magnetic Resonance Imaging 

CT Scanner -(computed tomography) scanner 

Amplitude determine the loudness or softness of the sound 

Nitrogen Dioxide contribute to Photochemical  smog 

Hemoglobin is a protein inside RBC that carry oxygen 

Color Blindness disease seen in more in Man as compared to Woman 

Myopia - Near sightedness(close object clear and far object not clearly visible) 

Myopia - Concave lens 

Hyper Metropia - far object clear and *, object not clearly visible) 

Hyper Metropia - Convex lens 

(Acetone)  found in nail polish remover 

Gas expand more than liquid that's why a gas thermometer is more sensitive than liquid thermometer 

UV ray / Ultraviolet rays are observed by 

Ozone at ozone layer

Edward Jenner is father of Immunology 

Velocity of light is maximum at  Vacuum 

Due to presence of (Heparin)in the body we are not suffering from blood coagulation /clot

Silicon is used in solar cells 

Turmeric is natural acid-base indicator 

Estrogen - female sex hormone 

Testosterone - Men main sex hormone 

Golden rice is a rich source of (Vitamin A) 

Titanium - Metal of future 

Diamonds is hardest  than (glass, Quartz and Iron )

When water is heated from 0degree to 10 degree Celsius it's volume will be first decrease than increase 

Land covered with fresh snow reflect back more sunlight 

Total Internal Reflection causes Mirage 

Swimming pool appear less deep than actual depth bcoz (Refraction) 

White light constitute 7 color 

Red light has (maximum wave length and minimum energy) 

Violet has (minimum wave length and maximum energy) 

Yellow street light has (Neon gas) 

Light travel fastest in vacuum 

 Velocity of light is 3 * 10^8 m/sec

Or 3 * 10^5 km/sec

Cream gets separated from milk due to (centrifugal force )

The filament of electric bulb made up (Tungsten)bcz Tungsten has high melting point 

A Fuse Wire - high resistivity and minimum melting point 

If the length of resistance wire increases then its resistance (increase) 

Length is directly proportional to resistance 

Ex( if length increase resistance increase if length decrease resistance decrease) 

Area is inversely proportional to resistance 

Ex (if area increase resistance decrease and if area decrease resistance increase) 

CN - ion is isoelectronic with (N2 and CO) 

Isobars - same mass number but different atomic number 

Anions is formed by Gaining of electrons 

Acid turn blue litmus to red (A B R) 

Base turn red litmus to blue (B R B) 

Sulphuric acid present in Battery 

Litmus is obtain from Lichen 

Where lichen (natural indicator) 

Excess salt + water = Brine Solution 

NaCl has (Ionic Bond) 

Ionic Bond -( metal + non -metal ) produce high melting and boiling point 

Here bond form by (transfer of  electrons from one to other) 

Covalent bond here bond form by (Sharing of electrons between atom) 

Covalent bond -(non metal + non metal) 

Low melting and boiling point 

( R.H. Whittaker ) proposed five kingdom classification 

(Xylem) transport water in plant 

(Phleom) transport (food and water in plant) 

World's first vaccin (small pox) by Edward Jenner 

B. C. G vaccin - Bacillus Calmette Guerin 

BOD stand for Biological Oxygen Demand 

3 R (reduce, reuse, recycle) 

Homo Sapiens is -( Man  - The Wise) 

(Lysosome) is called (house keeper, suicidal bags, Scavenger of cell, Atom Bombs)

The term RH factor refers to - 

Rhesus Factor by ( Karl Land Steiner)

RH factor came from Monkey name - Rhesus Macaca 

Pancreas - Endocrine gland (It produces several hormones) * Insulin, * Glucagon

* The pancreas is a mixed or heterocrine gland, i.e., it has both an endocrine and a digestive exocrine function. 

In human body largest heterocrine gland is - Pancreas

Largest endocrine gland - Thyroid 

Thyroid control ( Body metabolic rate ) and Protein Synthesis 

Human brain divided into 3 part 

* Fore Brain, * Mid Brain, * Hind Brain 

Forebrain is the largest brain in human body 

To reduce tooth decay most toothpaste contain Fluoride

Fluoride - enemel make, it reduce amount of acid produce by bacteria, Resistivity of tooth decay 

Fat soluble vitamins are -vitamin A, D, E, K

Vitamin K synthesis by liver 

The enzymes are basically (Proteins) 

Protein - body build 

Carrot is rich source of ( Vitamin A )

Bile juice secret by (Liver) 

Bile colour - Yellowish Green Fluid and stored in Gall Bladder 

Heart attack due to lack of blood supply to heart 

Alveoli related to Respiratory system 

Alveoli - unit of respiratory system 

Function of Alveoli is increase surface area of lungs 

Larynx produce sounds in human 

Black surface is a good absorber of heat hence cooking utensils are generally left black from below 

Refrigerator protect the food from contamination because Germs get died at this temperature 

4 degree Celsius is good for refrigerator 

Color of star determine by temperature 

Sun appears red during sunrise and sunset due to - the fact that all color scattered away except red 

In absence of earth's atmosphere sky would appear - Black 

Total internal reflection responsible for brilliance of Diamond 

Power of Lens = 1/ Focal length 

Primary color in photography are - Red, Green, Blue 

Intensity ( directly proportional to) (Amplitude) ^2

If intensity given 25:9 then amplitude will be 

√25:√9  

Then 5:3 (ans)

Malachite is an ore / mineral of Copper 

Iron, Chromium, nickel are (main component of stainless steel )

Tip of match stick contains - Red phosphorous 

The conversion of hard water into soft water by boiling or adding calcium hydroxide is called - Clarke's Process 

The waste generated by personal computer is - E waste 

Sound above 80 db consider as hazardous noise pollution 

0 db sound - Threshold of hearing 

20 db sound - Leaves 

40 db sound - (Background quiet music) 

60 db sound - Conversation 

80 db sound - busy street 

110 db sound - Jack Hammer 

120 db sound - Threshold of Pain 

140 db sound - Military Jet (100 ft)

Krichoff's first law - (Current Law) 

Current entering the Node = Current leaving the Node  i1 + i2 + i3 = i4 + i5

Krichoff's second law - Voltage Law 

Sum of all voltage drop around the loop is equal to zero 

Magnetic materials

* Diamagnetic Materials 

Ex - Water, Copper, Gold, Bismuth, Silicon, and Nitrogen (at STP). 

* Paramagnetic Materials

Ex - Aluminum, Platinum, Manganese, Lithium, and Oxygen. 

* Ferromagnetic Materials

Ex - Iron (Fe), Nickel (Ni), Cobalt (Co), and Gadolinium (Gd). 

* Antiferromagnetic Materials 

Ex - Manganese Oxide (MnO), Chromium, and Hematite (Fe2 O3)

*Ferrimagnetic Materials

Ex -Magnetite (Fe3 O4) and various Ferrites used in electronics. 

Minimum escape gravity of space from earth to space 11.2 km per second 

Easiest way to liquify gas (gas to liquid)  is - Low temperature and high pressure 

Lamberts is related to - illumination

Energy unit - Kilowatt 

Power unit - Jule per second (p = j/s)

Force unit - pressure per unit area (F = P/A)

Momentum unit - mass * Velocity 

Birds do not have respiratory trouble while flying high bcoz - They have extra air 

Sacs 

Sonar used to submerged objects under sea

Sonar full form - Sound Navigation Ranging 

Radar full form - Radio detectation and Ranging 

Radar use on aeroplane to show way 

Tomato turn red when ripe bcoz presence of chromoplast 

Raindrops are spherical due to surface tension 

F.G.Vating discovered insulin 

Colors appears in bubbles due to interference

Jupiter planet spins the fastest 

BOD (Biological oxygen Demand) is used as a standard measure of oxygen level in water system 

Neutron has no mass , no charge but only spin 

Plants are growing in sunlight are called - Heliophytes

J. J. Thomson discovered Cathode rays 

Cathode rays  (- ve charge) 

+ve charge is Anode and Anode is discovered by - Gold Stein 

Coulomb's Law of physics states that the force between the two electric charges reduces to a quarter of its former value when the distance between them is double 

Hence, F = q1q2 / r2 

Here, q1q2 is charge and r is Radius or distance 

The metallurgical process in which a metal is

obtained in a fused state is called Smelting 

Mercury and Venus have no satellite 

For photosynthesis green plant require 

* light, carbon dioxide and water, Chlorophyll 

(Venus ) -

Venus and Uranus moving (east to west) and others planet moves (west to east) 

* It rotated east to west on its axis

* Venus is known as morning star 

* It is the hottest planet of the solar family as well as it is known as shining star 

* Venus is known as goddess of love in Greek 

Example of diffusion of gases are -

* Perfume Smell, Food aroma, Fragrance of Incense Sticks 

Cholera is an epidemic and endemic disease

Epidemic disease - yellow fever, small pox, Measles, Polio 

Endomic disease - Flu, Malaria, HiV, Spills 

Metamorphosis of butterfly -

Egg - larva - Pupa - Adult /butterfly 

Serially the size of planet from big to small 

Jupiter > Saturn > Uranus > Neptune > Earth  >Venus > Mars > Mercury 

Large size - Jupiter, small size - Mercury 

Size of earth in sequence of planet is 5th no 

O+ can't be universal donar bcoz it has (RH factor) 

O- can be universal donar 

B. C. G vaccinations given to a baby immediately just after birth 

2G Spectrum - 2 generation spectrum 

18 caret gold include - 82 part of gold and 18 part of other materials 

24 caret gold include 99.9% gold 

Hydrogen Bomb developed by -

( Edward Teller )

Atom Bomb developed by -

(J. Robert Oppen Heimer) 

When 2 electrons in the same orbital they (move /spin opposite direction )

Deposition of zinc on iron called - Galvanization

Fermentation of milk to curd is due to - Lactobacillus

Sulphuric acid used in lead storage cells

Milk taste sour when kept in the open for sometime due to the formation of lactic acid 

Mercury vapour and argon present in (fluorescent tubes / bar light) 

Graphite in solid state can conducts current 

Mercury is the best conductor of heat 

Hygrometer used to measure humidity of Air 

The shape of our milky way galaxy is - Spiral 

Mist is caused by water vapour at low temperature 

Momentum = Mass * Velocity 

While catching the ball the player pull down his hands to lower the momentum 

A barometer reading suddenly fall / recedes 

It indicates that climate will be extremely stormy

Knoll and Ruska invented (Electron

Microscope) 

 (Crooks glass) used for Sun Glass 

The speed of light with the rise in the temperature of the medium - Remains unaltered (no effect) 

Graphite is the good conductor of electricity 

Lymphocytes of (WBC) produce antibodies 

White Blood Cells divided into 2 types 

* Granular, * Non-Granular

Granular - Esonophill, Neutrophil , your 

Non Granular - Lymphocyte , Monocyte 

Lymphocyte - B type  , T type 

Monocyte - Macrophages, Dendritic 

Vitamin K helps in blood coagulation

Nerves tissue in man no cell division occurs after birth 

Normal constituent of Urine - Creatinine,Urea,Uric acid 

Abnormal constituent of Urine -

Ketone Bodies 

At very high altitude the RBC red blood corpuscles (RBC increase in size) 

A test tube baby means - Fertilisation in vitro and then transplantation in the uterus 

1st test tube baby in India - Kanupriya Agarwal

1st test tube baby in World - Louise Brown

Roundworm is a human parasite found in Large Intestine

46 number of chromosomes in normal human body male - XY, Female XX 

Xerophthalmia (Dry eye disease) cause by lack of Vitamin A 

Carbohydrate stored in the body as glycogen

Remote of TV has Infrared Ray 

Energy of Ultraviolet ray is greater than Infrared Rays 

Anemometer used to measure speed of wind 

Law of Gravitation - Newton 

Cylindrical lens used to correct defect of astigmatism 

Water has got more heat capacity 

Potential Energy stored in a watch spring 

Newton 1st law of Motion focus on Inertia 

* body in rest remains rest unless force not act on it 

* body in moving remain in motion /moving unless force is act on it 

A pond water appears less deep due to - Refraction 

Drinking soda is Acidic in nature 

Thorium is a radioactive 

Aluminum can be purified by - electrolysis 

Impure camphor is purified by - Sublimation 

Greenhouses effect is caused by Carbon dioxide 

Printing Press is an alloy/ mixture of- lead and antimony 

Bhopal gas tragedy associated with leakage of methyl isocynate

The acid rain contain - Sulphuric acid 

To preserve food we use - sodium salt of benzoic acid 

Carbon monoxide is most toxic 

Penicillin is extracted from Fungus 

Penicillin discovered by Alexander Fleming 

Lymphocytes part of WBC helps in circulation of blood 

Boron helps to increase absorption of water and calcium in plant 

Boron chemical name (B) atomic no -5

Tricalcium Phosphate helps to make bone and teeth of Human body 

Angora Wool is extracted from - Rabbit 

Pituitary gland /base of brain /master gland located in( Brain )

The tree has 50rings ,So the age of tree is 50 years 

Onion is a modified form of (Stem )

Potato also modify form of (Stem) 

Ginger also modify form of (Stem) 

Radiologist do not take direct photograph of intestine because X-ray are not able to capture clear picture 

In eye color vision is effected by the presence of Cones 

Beryllium sulphate is less soluble In water due to high inflammable energy 

Cement is made hard with hydration and dissociation of water 

Cement made of (Lime + Silica + Aluminium )

When a chemical bond is formed - energy is always absorbed 

Cane Sugar is - Carbohydrate

Carbohydrate = Carbon + Hydrogen + Oxygen 

Maximum Iron ore is found in Fe2O3

City having large number of vehicles or automobiles polluted air by releasing - (Lead) 

( Lead )chemical name - pb 

Gas present under pressure in soft drink is - ( Carbon Dioxide ) chemical name - CO2

Heart Pacemaker is made up (Uranium) and it is used to bring heart beat at normal rate and Rhythm 

Graphite use as a lubricant in heavy machine

Milk is a colloidal system in which - Fat is dispersed in water 

Diode is used for purification 

Diode is also called as rectifier current from (AC to DC) 

Diote also used to purify circuit 

Dr Hom J Bhabha / Dr Hom Jhangir Bhabha developed the technology of (Underground nuclear explosion )

Dr. Vikram Sarabhai is Indian scientist discovered Nuclear Power 

Coal produce most/more heat per unit is - Anthracite

Coal produce least /less heat per unit is - Peat 

Coal from less heat to more ---

Peat (not a coal) - Lignite (Brown Coal) - 

When heated      it       form |

Bituminous (Soft Coal)  - Anthracite (hard coal)

Increasing heat and carbon content from Peat -Lignite -Bituminous - Anthracite 

Decreasing moisture content from -

Peat - lignite -Bituminous - Anthracite 

Microwaves is used for communication by artificial satellites

Fixed frequency found in frequency modulation

Liver is the biochemical laboratory of Human body 

Car release toxic gas are - carbon monoxide(CO), carbon dioxide (CO2), Sulphur Dioxide (SO2),Lead 

But more toxic gas is Carbon Monoxide (CO) 

Black lung disease cause people working in (Coal Mines)

Acid Rain caused by Sulphur Dioxide (SO2) and Nitrogen Dioxide (NO2)

Tree release Carbon Dioxide (CO2) at night 

Bhopal gas tragedy Dec 21 (1984)- Methyl isocyanate

Methyl isocyanate Used to manufacture Inscecticite 

Most abundant Noble gas - Argon 

Waste water release from kitchen is called ( Sullage) 

Limestone is a raw materials used in cement industry 

Cement discovered by Joseph Aspdin

Crookes glass use to make spectacles 

Pasteurization is a process in which milk is heated at (63 degree centrigrate for 30 minutes ) to destroyed mycobacterium tuberculosis 

Kitchen or cooking gas is a mixture of Butane and Propane 

Butane - C4H10 

Propane - C3H8

There is no unit of (relative density) 

Highly plastic example are - Clay, Wax 

5 Stage of Matter are -

Solid, Liquid, Gas, Plasma,Bose Einstein 

Conversion of water into steam is not a chemical change 

Chemical Change - 

Burning of Paper, Digestion of food, Burning of Coal 

Jaundice is a symptom of disease of (Liver) 

Cadmium is responsible for( Itai - Itai ) disease 

AIDS - Acquired Immuno Deficiency Syndrome 

(H5N1) is Avian Flu Virus / Bird Flu Virus 

Polio vaccine invented by - Jonas Salk 

SARS disease - Severe Acute Respiratory Syndrome 

Chemical name of Vinegar is Acetic Acid 

Acetic Acid - CH3CO2H

Edward Jenner is associated with smallpox 

The primary function of RNA is - Protein Synthesis

RNA present - Adenine , Uracil, Cytosine ,Guanine

DNA present -Adenine, Thymin, Cytosine, Guanine

Father of Genetic is George Mendel 

He made experiment on (Pea Plant )

He also given theory of Herediatery 

Enzyme helps in the process of digestion 

The animal which produce sound at its eyes is called - Bat

Pregnant women deficient in - Calcium and Iron 

Eyes of potato are useful for - Vegetative Propagation 

An ant is able to see objects all around it due to the presence of (compound eyes) cover 360 degree 

Normal Human -(72 heart beat per minute)

Time required for one heartbeat is ( 0.8 sec) 

Hormone not present in - Cat, Dog 

Hormones present in human, monkey, Rat, Bacteria 

Best Cholesterol is (HDL) High density Lipoprotein 

LDL - Low density lipoprotein 

VLDL - Very low density lipoprotein 

 ( Keratin ) skin layer impervious to water 

Soybean and Groundnut present - edible protein 

Ventilators are provided near the ceiling of the room because (the exhaled warmer air rises up and goes out )

Cars headlamp mirror is - (Parabolic Concave) 

Cars side mirror - Convex 

The swing of a spinning cricket ball in air is (Turbulence caused by wind) 

5 Atmosphere layer are -

Troposphere,Stratosphere,Mesosphere,

Thermosphere,Exosphere

Radio waves reflect back on ionosphere/Thermosphere

Smog is a combination of (Smoke and Fog) 

Polaroid's Spectacles are used for viewing 3D film 

Boy sitting in an open car moving with constant speed throw a ball straight up into the Air(The ball falls behind him) 

Soap making process is called Saponification

 Saponification - acid + base = salt

                               Oil + Iye = soap

The hair of shaving brush clings together when removed from water due to - Surface Tension 

Diamond looks attractive because of multiple internal reflections 

Plaster of Paris made by Partial dehydration of gypsum salt 

Water separated from alcohol mixture by - Distillation

Milk Sugar is - Lactose

Helium gas is used to fill weather balloons 

Hydrogen gas not found in atmosphere bcoz it is the lightest gas 

Ester organic compounds has fruity smell 

Nichrome used to make electric heater coil 

Nichrome - High resistivity materials 

Polythene is Polymer of Ethylene 

HYV - High Yielding Variety 

GM food refers to the food that is Generally Modified 

Sex of a child is determined by Chromosome of father 

1st cloned sheep is Dolly 

Haemophilia is a hereditary disease and cause by recessive gene or chromosome 

Pitutary gland secret - Growth hormone 

Melanin give color to human skin 

Insulin is a kind of hormone 

Insulin secret / Release from beta cell of Pancreas 

If low insulin secret - result will be diabetes 

The functional unit of kidney is (Nephron) 

Development of egg without fertilisation is called - Parthenogenesis 

During excitement - Adrenaline hormone released more amount 

Owl can see most clearly in darkness bcoz It has large eyes with rods directed forward giving it binocular sight 

Black board appears black in color bcoz it absorbs all the colours 

When light passes from one medium to another this phenomenon of change in its direction is called - Refraction 

The reflection formed by plane mirror is - Lateral Inversion

(Spherical Mirror) example are -

Concave and Convex 

Pitch of the sound depends upon frequency 

Frequency measure unit is (Hertz)

Bat, Dolphins used (Echolocation)to find prey, Predators or Obstacles 

The time period of Revolution for a Geo - Stationary Satellite is - 24 Hours 

With reference to Gravity (G) called - Gravitational Constant 

G (found by)  - Lord Cavendish 

KJ /Kg is the unit of Calorific Value 

Kinetic energy K = 1/2 mv2

When the speed of moving object is half -

Kinetic energy becomes 1/4 of the original 

Water should not be used to extinguish fire caused by electricity because it may cause electrocution 

IC - Integrated Circuit 

The density of water 1g/cc is valid at( 4 degrees Celsius) 

4 degrees Celsius - water has maximum density 

Bone, Teeth made of Calcium Phosphate 

Calcium is regulated by thyroid, Parathyroid gland 

Male (Anopheles)mosquito feed on - Nectar of flower 

Female (Anopheles)mosquito feed on - blood of human 

A diabetes mellitus drink water more frequently to eliminate from the blood extra Glucose 

Vitamin B-12 require cobalt for it's activity 

Chemical name of Vitamin B-12 is - (Cyanocobalamin ) and it is not present in plant food But present in animal food 

And stored in Liver 

Ascorbic Acid most rapidly destroyed by heat

Body Builder - Protein  

Vitamin - K synthesized by liver 

Cattle quickly swallow grass and stored in Rumen

The human heart is enclosed in the pericardium 

Hemoglobin contain Iron and it present in RBC red blood cell 

Heparin is the anti - coagulant substance in blood 

Color of blood is red due to presence of Hemoglobin 

When the speed of car is doubled then what will be the braking force of the car to stop it in the same distance 

Ans - 4 times 

Note - Breaking force is directly proportional to velocity square 

F is proportional to V2

The Dimension of momentum is the same as that of impulse 

If the diameter of a capillary is doouble then the rise of water in it will be half 

Needle of Iron swims on water surface when it kept gently due to surface tension 

NACO - National Aids control organisation 

NACO organisation dealing with Aids 

CO2 /Carbon Dioxide gas is used to extinguishing fire 

Study of Fungi is Mycology

Study of Algae is Phycology 

Study of Bacteria is Bacteriology 

Study of Virus is Virology

Blood group discover by Carl Land Steiner 

The person with color blindness red color will appear - Green 

Polio Vaccine discovered by Jones Salk 

Penicillin discovered by Alexander Fleming 

TB(Tuberculosis) discovered by Robert Koach 

Pineal gland/ Third eye is situated in brain 

An astronaut sees the colour of the sky as - Black 

Hydrochloric Acid do not contain oxygen 

Hydrochloric Acid - HCL 

Nitric Acid - HNO3

Sulphuric Acid - H2SO4

Oxalic Acid Solution used to remove rust stain on clothes

Fuse has High resistance and low melting point 

The principle of ( Fuse ) is - Heating effect of Electricity 

Cinnabar is an Ore / Mineral of (Mercury) 

A pungent smell is often present near the urenals is due to - Ammonia 

Bauxite is the Ore of Alluminium 

Odisha held 1st rank in available Bauxite 

4 degree is the safest temperature to store food in refrigerator 

Carbon Monoxide is a pollutant because it react with Hemoglobin 

Blood enter the kidney through the - Renal Artery 

Romer measured the velocity of light first 

Gravitation and Centripetal force combine planet together in their respective orbits

Cement = Limestone + Clay + Gypsum 

Michael Faraday invented Dynamo 

Fish Oil is good source of (Vitamin A) 

Adrenaline is emergency hormone in human 

Associated with sound wave are - Hertz, Decibel, Mach 

Candela is the unit of Luminous Density 

Theodore Maiman invented (Laser) /Laser light 

The colour of liquified oxygen is - Pale Blue 

Phenol is used to manufacture of Bakelite 

Osmium metal is the heaviest metal found in the earth 

Hydrogen Sulphide  gas smells like rotten egg 

Gold is most ductile metal 

Corona virus affect more  - lungs in human body 

Rabies disease cause by Dog bite 

A person suffering from Rabies - Loss the ability to think 

Sodium is a metal which can be easily cut by simple knife 

Sodium is Alkali metal

Scientific name of Mango is - Mangifera indica 

Scientific name of Cat is - Felis catus 

Scientific name of Frog - Rana Tigrina 

Scientific name of Men - Homo sapiens

Homo sapiens meaning - Man Wise 

Alcohol is mainly used in hand sanitizer 

Alcohol - C2H5OH

Enzymes present in stomach are -Pepsin, Hydrochloric Acid, Mucus 

Enzymes present in small intestine is - Trypsin 

Fat are stored in (Adipose tissue ) in human body

Athlete's foot is dangerous disease cause by - Fungus 

Thermos keep liquid hot a long time bcoz - the shining inner walls and double walls of the outer covering do not allow heat to escape 

Ink from fountain pen spill out when it is carried in an aeroplane bcoz (due to the low pressure in aeroplane) 

The sum total of all chemical process in the body is called - Metabolism 

Black soil is good for cultivation of cotton 

Einstein's formula for mass-energy equivalence is E = Mc2

E represent energy, M represent Mass, C represent speed of light 

Excitement in human body cause by - Adrenal gland 

Plaster of Paris become very hard when mixed with water 

Grass appears green because - It reflects green colour 

Sound wave above 20,000Hz are called -

Supersonic 

Nylon Synthetic Fibres was discovered first 

Water pipe are apt burst in cold weather bcoz - The water in the pipe turn into ice and expands 

At 4degree celcious density of water is maximum 

Loudness of the sound depends upon Amplitude of the sound wave 

Pitch of the sound depends upon frequency of the sound wave 

Minimum escape capacity of rocket is 11km/sec

Isoneph indicates the line of equal cloudiness

Plant's seed used to make coffee drink 

The part of the plant that evaporate water is called stomata 

Stomata - It controls the rate of gas exchange 

Winter Sleep is called - hibernation

Summer Sleep is called - Aestivation

Maximum amount of (Nitrogen) gas Present in the air 

Nitrogen -78.09%present in air 

2nd maximum amount of (Oxygen)gas present in the air 

Oxygen - 20.95%

Non - Biodegradable Waste are -

Plastics,Glasses,Polythene

Biodegradable waste - Eggshell 

Egg Shell contain- Calcium Carbonate present 95% And it's chemical name -CaCO3

Coil, liquid are used in home to get rid from mosquito is called - insecticide

Sulphur Dioxide /SO2 used to destroys chlorophyll present in plant leaves 

CPCB stands for - Central Pollution Control Board establish in 1974

Tiger State - Madhya Pradesh 

Luminous - Emit light energy by themselves 

Ex - Sun, Star 

(Non - Luminous) Doesn't emit light energy by themselves 

Ex - Moon 

Minimum distance between molecules present in solid 

Maximum distance between molecules present in gas 

Geothermal energy is stored in the earth 

The study of amphibians and reptiles is called Herpetology 

Project Tiger launched in India in 1973

1st tiger reserve zim carbet national park 

Water Year - 2007

1st tropic level in food chain is - Green Plant 

Accumulation of salts in the soil is called - Salinization

The CFCs Chloro Fluro Carbon use in -

Insulators Aerosol,Propellants,Refrigerants

Noise pollution effect - Hearing Loss, Hypertension, Stress and Headache

Wildlife week is - 2nd October to 8th October 

Factors leads to Eutrophication are - 

* Excessive use of fertilizers

* Increase of plant nutrients 

Number of Biodiversity in the world is 36

Forest conservation act was amended in 1988

The process in which earthworms  decompose biodegradable solid waste is called - Vermi - Composting 

Methane gas is contributed by cattle farming for greenhouses 

Increase in blood pressure is called - Hypertension 

RBC are formed in the Red bone marrow in the adults 

The hottest part of gas flame is - Non luminous zone 

Earth is a bad absorber and bad radiator of heat 

Handle of metallic teapot made of wood bcoz wood is a bad conductor of heat 

Two thin shirt can keep us warmer than a single thick shirt in winter bcoz Layer of air act as an insulating medium between two shirt 

A white and smooth surface is - Bad absorber  and Good reflector of heat 

A copper disc has a hole. If the disc is heated the size of hole is increase 

Mud is a good insulator bcoz Mud house are cooler in summer and and warmer in winter