Chemistry Questions

Q:

What is the process of slow cooling of hot glass called?

A) Annealing B) Humidifying
C) Condensation D) Decantation
 
Answer & Explanation Answer: A) Annealing

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Q:

The maximum number of electrons that can be accommodated in M shell is

A) 8 B) 2
C) 18 D) 32
 
Answer & Explanation Answer: C) 18

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Q:

The maximum number of electrons that can be accommodated in a shell is indicated by the formula

A) 2n-2 B) 2n3
C) 2n D) 2n2
 
Answer & Explanation Answer: D) 2n2

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Q:

Researchers at the University of Illinois have discovered new form of matter called Excitonium which was coined by ______ in the 1960’

A) Bertrand Halperin B) Eugene Wigner
C) Paul Dirac D) Felix Bloch
 
Answer & Explanation Answer: A) Bertrand Halperin

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Q:

The gas evolved when sodium carbonate reacts with hydrochloric acid is

A) Hydrogen B) Chlorine
C) Hydrogen Chloride D) Carbon dioxide
 
Answer & Explanation Answer: D) Carbon dioxide

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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:

Sphalerite is an ore/mineral of

A) Mercury B) Molybdenum
C) Silver D) Zinc
 
Answer & Explanation Answer: D) Zinc

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Q:

What is the atomicity of Phosphorous?

A) Di-atomic B) Poly-atomic
C) Tetra-atomic D) Mono-atomic
 
Answer & Explanation Answer: C) Tetra-atomic

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