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 Chemistry Questions

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Q:

The number of neutrons present in a nitrogen atom is ___.

A) 14 B) 7
C) 11 D) 5
 
Answer & Explanation Answer: B) 7

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Q:

What is C12H22O11 also known as

A) Sand B) Sugar
C) Salt D) Clay
 
Answer & Explanation Answer: B) Sugar

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Q:

In the Modern Periodic Table elements present in the same period will have the same

A) atomic weight B) number of shells
C) atomic number D) valence electrons
 
Answer & Explanation Answer: B) number of shells

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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:

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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Q:

Which of the following causes damage to bridges, iron railings and all objects made of metals?

A) Reduction B) Rancidity
C) Acidity D) Corrosion
 
Answer & Explanation Answer: D) Corrosion

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Q:

The hardest natural substance is

A) Graphite B) Diamond
C) Iron D) Copper
 
Answer & Explanation Answer: B) Diamond

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Q:

Which of the following metals does NOT react with cold or hot water?

A) Aluminium B) Potassium
C) Sodium D) Calcium
 
Answer & Explanation Answer: A) Aluminium

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