ENTRANCE TEST â€“ 2010 | Multiple Questions and Answers

71.	Which one of the following noble gases is used for providing an inert atmosphere for welding?

	A.	Helium
	B.	Neon
	C.	Argon
	D.	Krypton

72.	The percentage of carbon in different types of iron products is in the order of

	A.	Cast Iron > Wrought Iron > Steel
	B.	Wrought Iron > Steel > Cast Iron
	C.	Cast Iron > Steel > Wrought Iron
	D.	Cast Iron > Steel > Wrought Iron

73.	Which one of the following is correct equation of 1st ionization of sulphuric acid?

	A.	H2SO4(aq) + H2O(l) 2H+ + SO4 2
	B.	H2SO4(aq) + H2O(l) H+(aq) + HSO4
	C.	H2SO4(aq) + H2O(l) 2H+ + SO4 2
	D.	H2SO4(aq) + H2O(l) H3O+ + SO4 2

74.	Which one of the following is the correct chemical reaction for Ammonia formation by Haber process?

	A.	N2(g) + 3H2(g) 2NH3(g)
	B.	2N(g) + 3H2(g) â‡Œ NH3(g)
	C.	2N(g) + 3H2(g) 2NH3(g
	D.	N2(g) + 3H2(g) â‡Œ 2NH3(g)