Physics Objective Questions - 3

Question: 11

Galvanised iron sheets are protected from rusting due to the presence of a layer of

(A) Chromium 

(B) Zinc

(C) Tin

(D) Lead

Ans: B

Zinc

Question: 12

The gland, which in relation to body size is largest at birth and then gradually shrinks after puberty is

(A) Pituitary 

(B) Thymus

(C) Thyroid

(D) Adrenal

Ans: B

Thymus

Question: 13

The basis reason for the extra ordinary sparkle of a suitably cut diamond is that

(A) it has a very high refractive index

(B) it has a very high transparency

(C) it has well defined cleavage planes

(D) it is very hard

Ans: A

it has a very high refractive index

Question: 14

If a man weighs 600 N on the earth, then his weigh on the moon will be approximately

(A) 60 N

(B) 100 N

(C) 600 N

(D) 6000 N

Ans: B

100 N

Question: 15

From which minerals is radium obtained?

(A) Pitchblende 

(B) Rutile

(C) Limestone

(D) Haematite

Ans: A

Pitchblende 

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