Latest and Important Everyday Science MCQs

Which of the following is used in making smoke bombs?

A). Sulphur

B). Phosphorus

C). Hydrogen

D). Carbon

The hardest substance available in earth is?

A). Platinum

B). Silicon

C). Diamond

D). Gold

Which of the following is the best conductor electricity?

A). Zinc

B). Copper

C). Gold

D). Silver

The ratio of pure gold in 18 carat gold is?

A). 60%

B). 75%

C). 80%

D). 100%

Which radioactive pollutant has recently drawn the attention of the public due to its occurrence in the building materials?

A). Radium

B). Radon

C). Thorium

D). Plutonium

In an atomic explosion enormous energy is released which is due to the?

A). Conversions of neutrons into protons

B). Conversion of chemical energy into nuclear energy

C). Conversion of mechanical energy into nuclear energy

D). Conversion of mass into energy

Which of the following is used as a coolant in nuclear reactors?

A). Heavy water

B). Cadmium

C). Liquid sodium

D). Graphite

Which type of fire extinguisher is used for petroleum fire?

A). Foam type

B). Soda acid type

C). Powder type

D). None of these

Which is/are the important raw materials in cement industry?

A). Limestone

B). Gypsum and Clay

C). Clay

D). Limestone and Clay

A mixture of iron fillings and sand can be separated by?

A). Heating

B). Sublimation

C). Hand picking

D). Magnetic Separation

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