GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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1. Reproductive cells in human beings are produced

For a longer period in the female than in male

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

In equal number in both sexes

In greater numbers by the female than by the male

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

Boyle-Pascal's Law

None of these

Pascal's Law

Archimedes' Principle

3. The mass number of a nucleus is

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

A fraction

4. The refrigerant commonly used for domestic refrigerators is

Neon

Ammonia

None of these

Alcohol

5. The exhaled air contains

A mixture of carbon dioxide and nitrogen

A mixture which has more carbon dioxide than oxygen

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

Carbon dioxide only

6. Hybridization is

Cross-fertilization between two varieties

Downward movement of water through soil

Decayed vegetable matter

A process of tilling the land

7. The ozone layer restricts

Visible light

Infrared radiation

X-rays and gamma rays

Ultraviolet radiation

8. 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

Sedimentary rocks

Basalt

9. O₂ released in the process of photosynthesis comes from

Water

Sugar

CO2

Pyruvic acid

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

Novas and supernovas

Binaries

Asteroids

Quasars

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11. Metals are good conductors of electricity because

They contain free electrons

They have high melting point

The atoms are lightly packed

All of the above

12. The planet which is farthest from the Sun is

Saturn

Uranus

Jupiter

Neptune

13. Heavy alcohol consuming people generally dies of

Liver or stomach cancer

Blood cancer

Cirrhosis

Weakening of heart muscles leading to cardiac arrest

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

HCI

HF

HI

HBr

15. Lime is sometimes applied to soil in order to

Make the soil more porous

Restore nitrates to the soil

Increase the alkalinity of the soil

Increase the acidity of the soil

16. Which of the following diffuses most quickly?

Liquid

Solid

Gas

None of these

17. 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

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

29 KJ

30 KJ

39 KJ

1 KJ

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

Earth's gravitational pull

Centripetal force due to the earth's rotation

Moon's gravitational pull

Pressure of the atmosphere

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

Lettuce Lettuce

Milk

Butter

Fish

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

Leave it to the local public to decide

Provide environmental education to the local people and create awareness

Implement environmental laws strictly

Use the local administrative machinery

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

Chlorine

Argon

Helium

Zenon

23. 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

24. Doldrums is an area of

Low humidity

Low rainfall

Low temperature

Low pressure

25. Penicillin is widely used as

An antibiotic

An insecticide

An antiseptic

A disinfectant

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

Southeast

Northeast

West

East

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

Joule

Watt

Kg wt m

Kg wt

28. The mineral containing both magnesium and calcium is

Calcite

Carnallite

Dolomite

Magnesite

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

Plastic surgery

Bypass surgery

Test-Tube baby

Organ transplant

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

Peat

Coke

Coal tar

Liquefied Petroleum Gas

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

Potassium carbonate

Potassium hydroxide

Sodium bicarbonate

Potassium chloride

32. Photo-oxidation is

All of these

Light and oxygen induced breakdown

Photo respiration

Photolysis

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

Arteries

Nerves

Muscle fibres

Veins

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

Potassium nitrate

Aluminium hydroxide

Sodium chloride

Silver bromide

35. Water is a good solvent of ionic salts because

It has a high dipole moment

It has a high specific heat

It has no colour

It has a high boiling point

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

3,320 m/sec

343 m/sec

320 m/sec

30 m/sec

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

Spacecraft

Sound

Aircraft

Ships

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

This acid was first obtained by the distillation of ants

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

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

Ants are attracted by the odor of this acid

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

25 trillion

20 trillion

15 trillion

30 trillion

40. Which is the closest planet to Earth?

Jupiter

Venus

Mars

Mercury

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41. Soil is formed from the parent rock material by

Chemical decomposition

Physical decomposition

All of these

Biological decomposition

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

High Yielding Variety of seeds

Adequate irrigation facilities

Chemical fertilizers and pesticides

All of these

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

Friction between the earth and the bus

Inertia of the passengers

Friction between the passengers and the earth

Inertia of the bus

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

Transgenic Goat

Transgenic Cow

Transgenic Bacteria

Transgenic Mice

45. RDX is

A gene

A chemical used in the manufacture of fertilizers

An explosive

An instrument to measure blood pressure

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

Specific heat

Thermal capacity

None of these

Water equivalent

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

Adding sodium carbonate

Boiling

Distillation

Adding caustic soda

48. 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

7.2 x

5x/36

x/6

49. 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

14 m/s

0.14 m/s

140 m/s

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

None of these

Heat is released

Heat is absorbed

Quantity of heat remains unchanged

GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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