a2zinterviews

1.	Which gas is used in filling electric bulbs?
	A.  Radon
	B.  Argon
	C.  Krypton
	D.  Neon

Answer

Ans: B Argon

2.	Sodium carbonate is manufactured by
	A. Haber's process
	B. Contact process
	C. Lead chamber process
	D. Solvay process

Answer

Ans: D Solvay process

3.	Baking powder is a mixture of
	A.  Sodium bicarbonate and common salt
	B.  Sodium carbonate and tartaric acid
	C.  Sodium bicarbonate and tartaric acid
	D.  Sodium carbonate and common salt

Answer

Ans: C Sodium bicarbonate and tartaric acid

4.	The percentage of nickel in nickel alloy for making radio valves is
	A.  2%
	B.  20%
	C.  30%
	D.  46%

Answer

Ans: D 46%