a2zinterviews

33.	In which of the following activities silicon carbide is used?
	A.  Disinfecting water of ponds
	B.  Cutting very hard substances
	C.  Making cement and glass
	D.  Making casts for statues

Answer

Ans: B Cutting very hard substances

34.	In an atomic explosion, enormous energy is released which is due to the
	A.  Conversion of mass into energy
	B.  Conversion of mechanical energy into nuclear energy
	C.  Conversion of neutrons into process
	D.  Conversion of chemical energy into heat energy

Answer

Ans: A Conversion of mass into energy

35.	The property of a substance to absorb moisture from the air on exposure is called
	A.  Osmosis
	B.  Dessication
	C.  Deliquescence
	D.  Efflorescence

Answer

Ans: C Deliquescence

36.	Life of RBC in human blood is of
	A.  30 days
	B.  60 days
	C.  120 days
	D.  15 hours

Answer

Ans: C 120 days