GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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1. O₂ released in the process of photosynthesis comes from

Pyruvic acid

Sugar

CO2

Water

2. Reproductive cells in human beings are produced

In greater numbers for a longer period of time in the male

For a longer period in the female than in male

In greater numbers by the female than by the male

In equal number in both sexes

3. Of the four landmarks of medical history given bellow, which one was the first to take place?

Bypass surgery

Plastic surgery

Test-Tube baby

Organ transplant

4. Soil is formed from the parent rock material by

Chemical decomposition

Physical decomposition

All of these

Biological decomposition

5. The refrigerant commonly used for domestic refrigerators is

None of these

Neon

Alcohol

Ammonia

6. The ionization energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2^nd orbit to 3^rd orbit is

5x

5x/36

7.2 x

x/6

7. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from

East

Northeast

Southeast

West

8. The mineral containing both magnesium and calcium is

Carnallite

Dolomite

Magnesite

Calcite

9. The molecule which has the highest percentage of ionic character among the following is

HCI

HF

HBr

HI

10. Water is a good solvent of ionic salts because

It has a high specific heat

It has no colour

It has a high dipole moment

It has a high boiling point

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11. Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

1.4 km/s

140 m/s

0.14 m/s

14 m/s

12. Of the following foods, which one is the best source of protein?

Butter

Fish

Lettuce Lettuce

Milk

13. The best way to tackle local environmental problems is to

Leave it to the local public to decide

Use the local administrative machinery

Implement environmental laws strictly

Provide environmental education to the local people and create awareness

14. The ozone layer restricts

Visible light

X-rays and gamma rays

Infrared radiation

Ultraviolet radiation

15. The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

4.84 × 10^17

6.023 × 10^23

6.023 × 10^19

1.568 × 10^3

16. Mach number is used in connection with the speed of

Sound

Spacecraft

Ships

Aircraft

17. Lime is sometimes applied to soil in order to

Make the soil more porous

Increase the alkalinity of the soil

Restore nitrates to the soil

Increase the acidity of the soil

18. If force is expressed in Newton and the distance in meter, then the work done is expressed in

Watt

Kg wt m

Kg wt

Joule

19. Photo-oxidation is

Photo respiration

Photolysis

All of these

Light and oxygen induced breakdown

20. When a moving bus stops suddenly, the passenger are pushed forward because of the

Inertia of the passengers

Friction between the earth and the bus

Friction between the passengers and the earth

Inertia of the bus

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21. Planets are

Luminous heavenly bodies that twinkle

Luminous heavenly bodies that do not twinkle

Luminous heavenly bodies revolving around a star

Non-luminous heavenly bodies

22. Hybridization is

Decayed vegetable matter

Cross-fertilization between two varieties

A process of tilling the land

Downward movement of water through soil

23. By genetic Engineering technique, the first transgenic animals are produced among

Transgenic Mice

Transgenic Cow

Transgenic Goat

Transgenic Bacteria

24. Penicillin is widely used as

A disinfectant

An antiseptic

An antibiotic

An insecticide

25. The method that cannot be used for removing permanent hardness of water is

Boiling

Distillation

Adding caustic soda

Adding sodium carbonate

26. Which of the following diffuses most quickly?

Gas

Liquid

Solid

None of these

27. The heat required to raise the temperature of body by 1 K is called

Thermal capacity

None of these

Water equivalent

Specific heat

28. The main source of chemicals which are used in industries is

Liquefied Petroleum Gas

Coke

Coal tar

Peat

29. The velocity of sound in air (under normal condition) is

343 m/sec

3,320 m/sec

320 m/sec

30 m/sec

30. The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth’s early life and solidified into hard rock's called

Igneous rocks

Granite

Basalt

Sedimentary rocks

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31. Which of the following act as a channel of transmission of blood to the heart in the human body?

Arteries

Veins

Nerves

Muscle fibres

32. Which of the following gases is not a noble gas?

Chlorine

Zenon

Helium

Argon

33. The heat energy produced when the human body metabolises 1 gram of fat is

1 KJ

39 KJ

29 KJ

30 KJ

34. The planet which is farthest from the Sun is

Jupiter

Uranus

Saturn

Neptune

35. In a normal human body, the total number of red blood cells is

15 trillion

20 trillion

30 trillion

25 trillion

36. Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the

Earth's gravitational pull

Moon's gravitational pull

Centripetal force due to the earth's rotation

Pressure of the atmosphere

37. The mass number of a nucleus is

A fraction

The sum of the number of protons and neutrons present in the nucleus

Always less than its atomic number

Always more than the atomic weight

38. Heavy alcohol consuming people generally dies of

Liver or stomach cancer

Blood cancer

Cirrhosis

Weakening of heart muscles leading to cardiac arrest

39. RDX is

A gene

An instrument to measure blood pressure

An explosive

A chemical used in the manufacture of fertilizers

40. Liquids transmit pressure equally in all directions. This is known as

Pascal's Law

None of these

Archimedes' Principle

Boyle-Pascal's Law

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41. Stars which appear single to the naked eye but are double when seen through a telescope are

Novas and supernovas

Binaries

Asteroids

Quasars

42. The exhaled air contains

Carbon dioxide only

A mixture of carbon dioxide and nitrogen

A mixture of carbon dioxide, nitrogen and oxygen in which nitrogen has the highest percentage

A mixture which has more carbon dioxide than oxygen

43. Ordinary table salt is sodium chloride. What is baking soda?

Potassium carbonate

Potassium chloride

Potassium hydroxide

Sodium bicarbonate

44. The Latin word ‘Formica’ means ant. The name formic acid is derived from this Latin word because

Ants are attracted by the odor of this acid

This corrosive acid is secreted by ants to drive away their enemies

This acid, in ancient times, was used to eliminate ant-hills

This acid was first obtained by the distillation of ants

45. What does happen when water is condensed into ice?

Heat is released

Quantity of heat remains unchanged

None of these

Heat is absorbed

46. Metals are good conductors of electricity because

They contain free electrons

The atoms are lightly packed

All of the above

They have high melting point

47. The success of Green Revolution depends on the availability of

All of these

High Yielding Variety of seeds

Chemical fertilizers and pesticides

Adequate irrigation facilities

48. Which is the closest planet to Earth?

Venus

Jupiter

Mercury

Mars

49. Doldrums is an area of

Low rainfall

Low temperature

Low humidity

Low pressure

50. Which of the following chemicals is useful in photography?

Sodium chloride

Potassium nitrate

Silver bromide

Aluminium hydroxide

GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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