a2zinterviews

41.	Which one of the following non metals is not a poor conductor of electricity
	A.  Sulphur
	B.  Selenium
	C.  Bromine
	D.  Phosphorus

42.	Which one of the following is not a chemical change ?
	A. Burning of coal in air
	B. Fermentation of sugarcane juice
	C. Cracking of petroleum
	D. Crystallization of table salt from sea water

43.	Which metal remains in the liquid form under normal conditions?
	A.  zinc
	B.  radium
	C.   uranium
	D.  mercury

44.	The rusting of iron nail
	A.  decrease its weight
	B.  increase its weight
	B.  does not affect weight
	D.  doesnotaffect weight but iron is reduced

45.	For which one of the following is the density maximum?
	A.  chloroform
	B.  benzene
	C.  water
	D.  ice