12
Q:

An alloy is

A) a compound B) an allotropic form
C) an isomer D) a mixture

Answer:   D) a mixture



Explanation:
Subject: Chemistry
Q:

Blue litmus paper turns ____ on contact with an acidic solution.

 

A) green B) red
C) yellow D) brown
 
Answer & Explanation Answer: B) red

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1 30
Q:

What is the dominant chemical present in detergent powder?

 

A) Calcium carbonate B) Sodium alkyl sulphate
C) Hydrochloric acid D) Sodium carbonate
 
Answer & Explanation Answer: D) Sodium carbonate

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Q:

Nitrous Oxide' is the chemical name of ______.

 

A) Tear Gas B) Fire Extinguisher
C) Laughing Gas D) Mosquito Repellent
 
Answer & Explanation Answer: C) Laughing Gas

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Q:

_____ gases trap heat in the atmosphere which makes the Earth warmer, causing global warming.

 

A) Greenhouse B) Nobel
C) Elemental D) Compound
 
Answer & Explanation Answer: A) Greenhouse

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Q:

What is the more common name for solid carbon dioxide?

 

A) Epsom B) Dry Ice
C) Potash D) Quick Silver
 
Answer & Explanation Answer: B) Dry Ice

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Q:

Which of the following is the major component of vinegar?

 

A) Citric acid B) Lactic acid
C) Nitric acid D) Acetic acid
 
Answer & Explanation Answer: D) Acetic acid

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2 185
Q:

When we cut an onion, the synthase enzyme converts the amino acid sulfoxides of the onion into which acid?

 

A) Sulfenic acid B) Citric acid
C) Nitric acid D) Sulphuric acid
 
Answer & Explanation Answer: A) Sulfenic acid

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