MCQ’s Science

1     The Vitamin which is required for proper clotting of blood in human body is:

a)    Vitamin E

b)   Vitamin A

c)    Vitamin B12

d)   Vitamin K

2     Electron was discovered by:

a)    Ernest Rutherford

b)   Max Planck

c)    Joseph Thomson

d)   Albert Einstein

3     The number of amino acids which are found in nature is:

a)    20

b)   10

c)    15

d)   105

4     Bacteria were first seen, described and sketched by:

a)    Jenner

b)   Linnaeus

c)    Pasteur

d)   Leeuwenhock

5     The outstanding discovery of J.C Bose, the Indian Scientist, is:

a)    Crescograph

b)   Boson

c)    Cosmic rays

d)   Ionograph

6     Density of a metal when it is heated:

a)    Remains the same

b)   Increases

c)    Decreases

d)   Melts

7     Which of the following elements has been known to man from prehistoric times?

a)    Sulphur

b)   Uranium

c)    Platinum

d)   Arsenic

8     Our Solar system is a small unit of:

a)    Milky way galaxy

b)   Crab nebula galaxy

c)    An independent galaxy

d)   None of the above

9     Nights are cooler in the desert because:

a)    The sky is generally clear

b)   The sky is generally cloudy

c)    Sand radiates heat less quickly as compared to earth

d)   Sand radiates heat more quickly as compared to earth

10  Storage batteries commonly contain:

a)    Copper

b)   Mercury

c)    Lead

d)   Iron

11  Which of the following is a polymer?

a)    Vinyl chloride

b)   Urea

c)    Starch

d)   Styrene

12  What is common between a whale and a monkey?

a)    Both have on external ear

b)   Both have a long balancing tail

c)    Both have body hairs throughout life

d)   Both give birth to young ones

13  The hormone which regulates the basal metabolism in our body is secreted from:

a)    Pituitary

b)   Thyroid

c)    Adrenal cortex

d)   Pancreas

14  The acid used in car battery is:

a)    Hydrochloric acid

b)   Boric acid

c)    Sulphuric acid

d)   Carbonic acid

15  The boiling point of water is unaffected by:

a)    The external pressure

b)   The temperature of heat source

c)    The kind of dissolved substances

d)   The amount of dissolved substances

16  What is the velocity of sound in the air?

a)    330 cms per sec

b)   330 meters per sec

c)    760 meters per sec

d)   1120 cms per sec

17  The gas used in discharged tubes for optical decoration and advertising is:

a)    Carbon dioxide

b)   Ammonia

c)    Sulphur dioxide

d)   Neon

18  The substance present at the centre of the sun are in:

a)    Solid, liquid and gaseous states

b)   Liquid state only

c)    Gaseous state only

d)   Both liquid and gaseous states

19  Blank capsules used in dispensing are made of:

a)    Egg-white

b)   Gum

c)    Starch

d)   Gelatin

20  Which one of the following is not an explosive:

a)    Trinitrotoluene

b)   Trinitroglycerine

c)    Cyclotrimethylene trinitramine

d)   Nitrochloroform

21  An ordinary clock loses time in summer, this is because

a)    The length of the pendulum increases and time period decreases

b)   The length of the pendulum increases and time period increases

c)    The length of the pendulum decreases and time period increases

d)   The length of the pendulum decreases and time period decreases

22  When ice cubes floating in a beaker of water melt, the level of water in the beaker:

a)    Goes up

b)   Goes down

c)    Remains same

d)   Fall or rise depending on the number of ice cubes present in the beaker

23  Which of the following is an element?

a)    Silica

b)   Magnesia

c)    Glass

d)   Graphite

Note: Silica/Silicon Dioxide/ Quartz/ SiO2

Magnesia / Magnesium Oxide/ MgO

24  A characteristic gas smells near the unclear public urinals. Which is this gas?

a)    Ammonia

b)   Chlorine

c)    Sulphur dioxide

d)   Carbon monoxide

Note: I am confuse which is Answer

25  Kilowatt is a unit to measure:

a)    Power

b)   Work

c)    Energy

d)   Current

26  The apparent weight of a man in a lift will be less than his real weight:

a)    When the lift is stationary

b)   At no time

c)    When the lift is going up with uniform acceleration

d)   When the lift is going down with uniform acceleration

27  A natural sweetening agent obtained from a plant (but not sugar) is

a)    Saccharin

b)   Santonine

c)    Cyclamates

d)   None of these

28  Alkaloids are by products of the metabolism of:

a)    Animals

b)   Bacteria

c)    Plants

d)   Viruses

29  Atom bomb is based on:

a)    Artificial radioactivity

b)   Nuclear fission

c)    Nuclear fusion

d)   Chemical reaction

30  Which gas in the atmosphere absorbs ultraviolet rays?

a)    Methane

b)   Nitrogen

c)    Ozone

d)   Helium