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 Chemistry Questions

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Q:

The atoms of the elements having same mass number but different atomic number are called

A) Isotopes B) Isobars
C) Isotones D) Isomers
 
Answer & Explanation Answer: B) Isobars

Explanation:
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Q:

Which of the following gases is present under pressure in soft drinks?

A) Nitrous oxide B) Oxygen
C) Nitrogen D) Carbon dioxide
 
Answer & Explanation Answer: D) Carbon dioxide

Explanation:

Carbon dioxide is present under pressure in soft drinks.

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Q:

Which of the following is the lightest metal?

A) Lithium B) Silver
C) Mercury D) Lead
 
Answer & Explanation Answer: A) Lithium

Explanation:

Lithium is the lightest of all the metals due to its low atomic number among metals. It is the lightest solid element.

 

Which_of_the_following_is_the_lightest_metal1552386560.jpg image 

 

Properties ::

 

* It is a soft silvery-white alkali metal.

* Lithium is highly reactive and flammable and is stored in mineral oil.

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Q:

Artificial radioactivity elements are present in

A) s - block B) p - block
C) d - block D) f - block
 
Answer & Explanation Answer: D) f - block

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Q:

Dry ice is nothing but

A) Solid carbon dioxide B) Baking soda
C) Gaseous carbon dioxide D) Carbon monoxide
 
Answer & Explanation Answer: A) Solid carbon dioxide

Explanation:

dry-ice1531812120.jpg image

 

Dry ice is solid form of carbon dioxide, used as a cooling agent.

 

It lower temperature than that of water ice and not leave any residue.

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Q:

Give the iupac name for the following compound?

che1530787063.jpg image

A) Sec-Butylcyclohexine B) Isopropylcyclohexane
C) 2-Cyclohexybutane D) None of the above
 
Answer & Explanation Answer: B) Isopropylcyclohexane

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Q:

IUPAC full form

A) Indian Union of Pure and Applied Chemistry B) International Union of Postal and Application Corporation
C) International Union of Pure and Applied Chemistry D) International University of Poland And Combodia
 
Answer & Explanation Answer: C) International Union of Pure and Applied Chemistry

Explanation:

IUPAC stands for International Union of Pure and Applied Chemistry.

 

A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).

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Q:

A particle which is four times in mass and two times in charge that of proton is

A) helium atom B) an alpha particle
C) deuteron D) tritium
 
Answer & Explanation Answer: B) an alpha particle

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