alloys, carbon & its various forms, hydrogen & compounds, sulphur, nitrogen, halogen & inert gases - Category wise Question and Answer Practice Test with Solutions

Question : 11 [BPSC (Pre) 1997]

Which of the following do not consist carbon?

a) None of these

b) Diamond

c) Graphite

d) Coal

Question : 12 [BPSC (Pre) 2001]

An element X has four electrons in its outermost orbit. What will be the formula of its compounds with hydrogen?

a) $XH_4$

b) $XH_3$

c) $X_4H$

d) $X_4H_4$

Question : 13 [UP (Pre) 2009]

Tubelight is filled with

a) Argon gas at low pressure

b) Mercury vapour at low pressure

c) Sodium vapour

d) Both (a) and (b)

Question : 14 [PCS (Pre) 2005]

What is mixed with iron to make stainless steel?

a) Chromium and Nickel

b) Nickel and Tin

c) Nickel and Copper

d) Zinc and Tin