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 Chemistry Questions

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Q:

What is the common name of Sodium Bicarborate?

A) Baking Soda B) Washing Powder
C) Plaster of Paris D) Fly Ash
 
Answer & Explanation Answer: A) Baking Soda

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Q:

Which base is present in milk of magnesia?

A) Magnesium hydroxide B) Ammonium hydroxide
C) Sodium hydroxide D) Calcium hydroxide
 
Answer & Explanation Answer: A) Magnesium hydroxide

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Q:

Which of the following has the highest boiling point?

A) 2,3-dimethylbutane B) 2-methylpentane
C) 2,2-dimethylbutane D) 1,2-methylpentane
 
Answer & Explanation Answer: C) 2,2-dimethylbutane

Explanation:

Due to the molecules present in the 2,2-dimethylbutane are closely packed, it has the highest boiling point.

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1 2128
Q:

Adding which substance gives blue colour to glass?

A) Manganese oxide B) Cobalt oxide
C) Chromium oxide D) Iron oxide
 
Answer & Explanation Answer: B) Cobalt oxide

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Q:

Elements that are poor conductors of heat and electricity are

A) Metals B) Non metals
C) Halogens D) Noble
 
Answer & Explanation Answer: B) Non metals

Explanation:

Elements that are poor conductors of heat and electricity are called Non metals.

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Q:

Ozone is an ______ of oxygen.

A) Allotrope B) Isotope
C) Isobar D) Isotone
 
Answer & Explanation Answer: A) Allotrope

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Q:

Lime water turns milky when carbon dioxide is passed through it. It is due to the formation of

A) Calcium Carbonate B) Barium Carbonate
C) Calcium Hydrogen Carbonate D) Calcium Oxide
 
Answer & Explanation Answer: A) Calcium Carbonate

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Q:

What is the product formed when sodium bicarbonate is heated strongly?

A) Sodium Carbonate B) Sodium Hydroxide
C) Sodium Peroxide D) Sodium Monoxide
 
Answer & Explanation Answer: A) Sodium Carbonate

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