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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