set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?

a) Neon

b) Hydrogen

c) Sodium

d) Nitrogen

Question : 2

The chemical name of limestone is

a) Magnesium Chloride

b) Sodium Chloride

c) Calcium Carbonate

d) Sodium Sulphate

Question : 3

Calcination is the process of heating the ore

a) in presence of air

b) in a blast furnace

c) in absence of air

d) none of these

Question : 4

Which of the following is not an ore?

a) Zinc blende

b) Bauxite

c) Malachite

d) Pig iron

Question : 5

Heaviest metal of the following is made of

a) Uranium

b) Aluminium

c) Copper

d) Silver

Question : 6

Which of the following statement regarding non-metals is true?

a) Non-metals are non-lustrous with dull apppearence. Graphite, an allotrope of carbon and iodine have shining lustrous surfaces.

b) Non-metals are of two types only solids and gases.

c) Non-metals reacts with oxygen to form basic oxides generally.

d) Non-metals replace hydrogen from acids.