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 Chemistry Questions

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Q:

Which of the following is false?

A) Hydrogen atom is roughly a third of the mass of tritium B) Deuterium is called heavy hydrogen
C) Deuterium atom has 1 neutron D) Protium is the rarest isotope of hydrogen
 
Answer & Explanation Answer: D) Protium is the rarest isotope of hydrogen

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Q:

What is the Greenhouse Effect?

A) The fall in population of plants due to human activity B) It is the warming of earth's surface due to its atmosphere
C) The polluting effect of burning fossil fuels D) The heating of the atmosphere due to depletion of the ozone layer
 
Answer & Explanation Answer: B) It is the warming of earth's surface due to its atmosphere

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Q:

Which of the following is used for disinfecting drinking water?

A) Baking powder B) Bleaching powder
C) Washing soda D) Baking soda
 
Answer & Explanation Answer: B) Bleaching powder

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Q:

Which of the following scientists had done some calculations for the fifth state of matter?

A) Satyendra Nath Bose B) CV Raman
C) Vikram Sarabhai D) Homi Bhabha
 
Answer & Explanation Answer: A) Satyendra Nath Bose

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Q:

Which of the following is not the properties of an ionic compound?

A) Soluble in water and insoluble in petrol B) High melting and boiling points
C) Low melting and boiling points D) Solid and hard
 
Answer & Explanation Answer: C) Low melting and boiling points

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Q:

Galvanization a process to prevent rusting involves use of ___ coating to steel or iron.

A) Nickel B) Magnesium
C) Copper D) Zinc
 
Answer & Explanation Answer: D) Zinc

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Q:

Metal oxides which react with acids as well as bases are called

A) Amphoteric oxides B) Neutral oxides
C) Basic oxides D) Acidic oxides
 
Answer & Explanation Answer: A) Amphoteric oxides

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Q:

NaCl is a salt which is made up of

A) Strong acid and weak base B) Weak acid and weak base
C) Strong acid and strong base D) Weak acid and strong base
 
Answer & Explanation Answer: C) Strong acid and strong base

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