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 Chemistry Questions

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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:

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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Q:

Which process is not associated with mechanical weathering?

A) reactions with oxygen B) frost wedging
C) biological oxygen activity D) unloading
 
Answer & Explanation Answer: A) reactions with oxygen

Explanation:

The process that occurs when physical forces break rock into smaller pieces without changing the rock's chemical composition is called mechanical weathering.

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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 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:

Which of the following scientists gave the law that governs the force of attraction/repulsion between two charged particles?

A) Charles Dufay B) Michael Faraday
C) Archimedes D) Charles Coulomb
 
Answer & Explanation Answer: D) Charles Coulomb

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Q:

In the following gases, which is not a colorless or odourless gas?

A) Nitrogen B) Chlorine
C) Hydrogen D) Oxygen
 
Answer & Explanation Answer: B) Chlorine

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Q:

Select the INCORRECT set of Molecular Formula - IUPAC Name - Common Name from the following options.

A) C4H9OH B) C2H3OH - Methanol - Methyl Alcohol
C) C2H5OH - Ethanol - Ethyl Alcohol D) C3H7OH - Propanal - Propyl Alcohol
 
Answer & Explanation Answer: B) C2H3OH - Methanol - Methyl Alcohol

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