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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.

The two allotropes of phosphorus are _______ and _______.

  Alpha, Beta

  Crystalline, Amorphous

  Rhombic, Monoclinic

  Red, Yellow

  Half-n-half Clue
 

2.

Heat is liberated in _______ reactions.

  endothermic

  substitution

  exothermic

  all chemical

  Half-n-half Clue
 

3.

A substance that speeds up the rate of a chemical reaction without undergoing any change itself is known as a _______.

  catalyst

  counter ion

  nucleus

  cation

  Half-n-half Clue
 

4.

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

  Argon

  Hydrogen Peroxide

  Hydrogen

  Sulfur Dioxide

  Half-n-half Clue
 

5.

Fill in the missing word:
Acid + _______ = Salt + Water

  Non Metal

  Oxygen

  Metal

  Base

  Half-n-half Clue
 

6.

Catalysts speed up the rate of chemical reactions.

  True

  False

 

7.

The 'fizz' in soft drinks is caused by _______.

  nitrogen

  hydrogen

  helium

  Carbon dioxide

  Half-n-half Clue
 


 
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