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 Chemistry Questions

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Q:

Which among the following noble gas has highest molar mass?

 

A) Kr   B)  Ne  
C)  Ar   D)  Xe
 
Answer & Explanation Answer: D)  Xe

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Q:

Which of the following is NOT a compound?

 

A) Ammonia B) Milk
C) Sodiumchloride D) Chalk
 
Answer & Explanation Answer: B) Milk

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Q:

Which subatomic particle has a negative charge?

 

A) Neutron B) Proton
C) Ion D) Electron
 
Answer & Explanation Answer: D) Electron

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Q:

Dissolving is best described as

 

A) molecules breaking into ions B) a change from a solid to a liquid
C) breaking covalent bonds D) a mingling of molecules and/or ions
 
Answer & Explanation Answer: D) a mingling of molecules and/or ions

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Q:

SnCl2 + 2HgCl2 ---> Hg2Cl2 + SnCl4

 

In the given reaction

 

A) HgCl2 is oxidised B) SnCl2 is oxidised
C) Hg2Cl2 is oxidised D) SnCl2 is reduced
 
Answer & Explanation Answer: B) SnCl2 is oxidised

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Q:

Fill in the blank with the most appropriate option.

 


An element attains stability when it achieves ________ state.

 

A) an only-duplet B) an only-octet
C) a duplet or octet D) a heptate
 
Answer & Explanation Answer: C) a duplet or octet

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Q:

A/an ___ flame is produced when the oxygen supply is sufficient.

 

A) red B) orange
C) blue D) green
 
Answer & Explanation Answer: C) blue

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Q:

Which of the following is a metal?

 

A) Sulphur B) Nitrogen
C) Oxygen D) No option is correct
 
Answer & Explanation Answer: D) No option is correct

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