set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following materials has the highest electrical conductivity?

a) Silver

b) Graphite

c) Diamond

d) Wood

Question : 2

Which of the following is mainly used for the production of Aluminium?

a) Lignite

b) Bauxite

c) Hematite

d) Magnetite

Question : 3

Which of the following is an oxide ore?

a) Haematite

b) Bauxite

c) Cuprite

d) All of these

Question : 4

Which one of the following materials is very hard and very ductile?

a) Tungsten

b) Cast iron

c) Carborundum

d) Nichrome

Question : 5

Which of the following statement is false?

a) Mercury is the only liquid metal.

b) Metals are good conductors of heat and electricity.

c) Gold, Silver and Zinc are most malleable metals.

d) Bromine is the only liquid non-metal.

Question : 6

The form of carbon known as graphite

a) contains a higher percentage of carbon than diamond

b) is a better electrical conductor than diamond

c) is harder than diamond

d) has equal carbon-to-carbon distances in all directions