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Chemistry : General Chemistry


Answer the following questions by choosing the most appropriate option.

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Multiple choice

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1.

What gas is evolved when dilute sulfuric acid is added to zinc?

  Argon

  Hydrogen

  Sulfur Dioxide

  Hydrogen Peroxide

  Half-n-half Clue
 

2.

Which of the following is not a physical change?

  Decantation

  Distillation

  Precipitation

  Oxidation

  Half-n-half Clue
 

3.

Which of the following is not an acid?

  NaOH

  HNO3

  H2SO4

  HCl

  Half-n-half Clue
 

4.

Which of the following is not an allotrope of carbon?

  Diamond

  Charcoal

  Silk

  Graphite

  Half-n-half Clue
 

5.

Catalysts speed up the rate of chemical reactions.

  True

  False

 

6.

A substance that absorbs moisture is called _______.

  hydrophobic

  amorphous

  hygroscopic

  hydrophilic

  Half-n-half Clue
 

7.

Solubility of a substance in a solvent usually increases with an increase in temperature.

  True

  False

 


 
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