GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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1. The planet which is farthest from the Sun is

Jupiter

Saturn

Uranus

Neptune

2. Hybridization is

Downward movement of water through soil

A process of tilling the land

Cross-fertilization between two varieties

Decayed vegetable matter

3. The mineral containing both magnesium and calcium is

Carnallite

Magnesite

Dolomite

Calcite

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

Kg wt

Joule

Kg wt m

Watt

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

6.023 × 10^23

4.84 × 10^17

6.023 × 10^19

1.568 × 10^3

6. 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

Basalt

Igneous rocks

Granite

Sedimentary rocks

7. Metals are good conductors of electricity because

They have high melting point

The atoms are lightly packed

They contain free electrons

All of the above

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

Boyle-Pascal's Law

Archimedes' Principle

Pascal's Law

None of these

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

Sound

Spacecraft

Aircraft

Ships

10. Planets are

Non-luminous heavenly bodies

Luminous heavenly bodies that do not twinkle

Luminous heavenly bodies that twinkle

Luminous heavenly bodies revolving around a star

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11. Penicillin is widely used as

An antibiotic

A disinfectant

An insecticide

An antiseptic

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

Water equivalent

None of these

Thermal capacity

Specific heat

13. The refrigerant commonly used for domestic refrigerators is

Alcohol

Neon

Ammonia

None of these

14. 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

15. Water is a good solvent of ionic salts because

It has no colour

It has a high dipole moment

It has a high boiling point

It has a high specific heat

16. Doldrums is an area of

Low pressure

Low humidity

Low temperature

Low rainfall

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

Inertia of the bus

Friction between the earth and the bus

Friction between the passengers and the earth

Inertia of the passengers

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

Adequate irrigation facilities

Chemical fertilizers and pesticides

High Yielding Variety of seeds

All of these

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

Liquefied Petroleum Gas

Peat

Coal tar

Coke

20. Which of the following diffuses most quickly?

None of these

Solid

Liquid

Gas

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

Veins

Muscle fibres

Arteries

Nerves

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

Adding caustic soda

Boiling

Adding sodium carbonate

Distillation

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

39 KJ

1 KJ

29 KJ

30 KJ

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

Moon's gravitational pull

Pressure of the atmosphere

Earth's gravitational pull

Centripetal force due to the earth's rotation

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

320 m/sec

343 m/sec

30 m/sec

3,320 m/sec

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

West

Southeast

Northeast

East

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

Potassium hydroxide

Potassium carbonate

Sodium bicarbonate

Potassium chloride

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

Test-Tube baby

Bypass surgery

Plastic surgery

Organ transplant

29. Reproductive cells in human beings are produced

In greater numbers by the female than by the male

For a longer period in the female than in male

In equal number in both sexes

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

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

Provide environmental education to the local people and create awareness

Use the local administrative machinery

Leave it to the local public to decide

Implement environmental laws strictly

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31. Which is the closest planet to Earth?

Venus

Mercury

Mars

Jupiter

32. Soil is formed from the parent rock material by

Physical decomposition

Biological decomposition

All of these

Chemical decomposition

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

HBr

HF

HCI

HI

34. RDX is

A chemical used in the manufacture of fertilizers

An instrument to measure blood pressure

An explosive

A gene

35. O₂ released in the process of photosynthesis comes from

CO2

Pyruvic acid

Water

Sugar

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

Zenon

Argon

Helium

Chlorine

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

Sodium chloride

Potassium nitrate

Aluminium hydroxide

Silver bromide

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

25 trillion

20 trillion

30 trillion

15 trillion

39. Lime is sometimes applied to soil in order to

Restore nitrates to the soil

Increase the acidity of the soil

Increase the alkalinity of the soil

Make the soil more porous

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

Asteroids

Binaries

Novas and supernovas

Quasars

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

Milk

Butter

Fish

Lettuce Lettuce

42. Photo-oxidation is

All of these

Photo respiration

Photolysis

Light and oxygen induced breakdown

43. 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

x/6

7.2 x

5x

5x/36

44. The ozone layer restricts

Infrared radiation

Visible light

Ultraviolet radiation

X-rays and gamma rays

45. The exhaled air contains

Carbon dioxide only

A mixture which has more carbon dioxide than oxygen

A mixture of carbon dioxide and nitrogen

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

46. 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

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

47. Heavy alcohol consuming people generally dies of

Liver or stomach cancer

Weakening of heart muscles leading to cardiac arrest

Blood cancer

Cirrhosis

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

None of these

Quantity of heat remains unchanged

Heat is released

Heat is absorbed

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

Transgenic Cow

Transgenic Goat

Transgenic Mice

Transgenic Bacteria

50. The mass number of a nucleus is

Always more than the atomic weight

Always less than its atomic number

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

A fraction

GENERAL SCIENCE QUIZ with 50 MCQs SET-9

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