Everyday Science Test 16

Total Questions: 31

1 - Real images are created by

A ) Convex lens and convex mirror
B ) Convex lens and a concave mirror ✅
C ) Concave lens and a concave mirror
D ) Concave lens and a convex mirror

2 - A point of clear water appears less deep than it really is. This is due to

A ) Refraction ✅
B ) Reflation
C ) The transparency of water
D ) Dispersion

3 - Which type of lens is used in correcting astigmatism?

A ) Concave lens
B ) Convex lens
C ) Cylinderical lens ✅
D ) None

4 - The pitch of sound depends upon

A ) Frequency qnd amplitude ✅
B ) Frequency alone
C ) Amplitude alone
D ) The difference in frequency from two sources

6 - One cannot hear sound on the moon because it has no

A ) Atmosphere ✅
B ) Light
C ) Darkness
D ) None

7 - Beats are the results of

A ) Diffraction
B ) Constructive and destructive interference
C ) Destructive interference
D ) Superposition of two waves of nearly equal frequencies ✅

8 - Energy is not carries by

A ) Transverse progressive waves
B ) Longitudinal progressive waves
C ) Stationary waves ✅
D ) Electromagnetic waves

9 - If two bodies are in resonance, then they are equal in

A ) Mass
B ) Size
C ) Frequency ✅
D ) Amplitude

10 - Doppler effect is associated with

A ) Sound ✅
B ) Light
C ) Magnetism
D ) Electromagnetic induction

12 - White lead is used as a

A ) Dye
B ) Vulcanizing agent
C ) Bleaching agent
D ) Paint pigment ✅

13 - Rectified sprit contains alcohol

A ) 80%
B ) 85%
C ) 90%
D ) 95% ✅

14 - With increasing bond order, stability of a bond

A ) Decrease
B ) Increase ✅
C ) Remains same
D ) None

16 - The photo oxidation process is initiated by

A ) Heat
B ) Light ✅
C ) Catalyst
D ) Oxygen

17 - The point at which solid liquid and gases forms for a substance co-exist is called its

A ) Boiling point
B ) Melting point
C ) Triple point ✅
D ) Freezing point

18 - Chlorine is not used

A ) As a bleaching agent
B ) As a dehydrating agent ✅
C ) In D D T formation
D ) As an oxidizing agent

19 - The boiling point of helium is

A ) 14.2 k
B ) 2.4 k
C ) 4.2 k ✅
D ) 0.4 k

20 - The chemist who synthesized urea from ammonium cyanate was

A ) Dalton
B ) Kolbe
C ) Wholer ✅
D ) Lavoisur

21 - Guava is a rich source of

A ) Vitamin C
B ) Vitamin D
C ) Vitamin A ✅
D ) Calcium

22 - Which one of the following vitamins is useful in osteomalacia?

A ) Vitamin D ✅
B ) Vitamin B
C ) Vitamin C
D ) Vitamin A

23 - Which of the following is not a source of vitamin C?

A ) Potatoes
B ) Tomatoes
C ) Guava
D ) Milk ✅

24 - Vitamins act as a

A ) Ribonucleic acid ✅
B ) Enzymes
C ) Co enzymes
D ) Amino acid

25 - Lack of Vitamin D cause which of the following disease

A ) Beri beri
B ) Scurvy
C ) Rickets ✅
D ) Amaemia

26 - Milk, cheese and eggs are the source of vitamin

A ) B and C
B ) A and C
C ) C and D
D ) A and D ✅

28 - The richest source of vitamin D

A ) Cod liver oil ✅
B ) Spinach
C ) Milk
D ) Cheese

29 - Cow milk is a rich source of

A ) Vitamin A ✅
B ) Vitamin C
C ) Vitamin B
D ) Vitamin D

31 - Which vitamin is provided by sunlight to the body?

A ) Vitamin A
B ) Vitamin B
C ) Vitamin C
D ) Vitamin D ✅