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Chemistry : General Chemistry


Answer the following questions by choosing the most appropriate option.

Formats Info Page Quiz Review
Multiple choice

Your Performance  

1.

Catalysts speed up the rate of chemical reactions.

  True

  False

 

2.

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

  helium

  Carbon dioxide

  nitrogen

  hydrogen

  Half-n-half Clue
 

3.

If no more solute can be dissolved in a solvent at a given temperature then that solution is called _______.

  an unstable solution

  a real solution

  a dispersed solution

  a saturated solution

  Half-n-half Clue
 

4.

The two allotropes of phosphorus are _______ and _______.

  Crystalline, Amorphous

  Alpha, Beta

  Rhombic, Monoclinic

  Red, Yellow

  Half-n-half Clue
 

5.

Which of the following is not an allotrope of carbon?

  Charcoal

  Graphite

  Silk

  Diamond

  Half-n-half Clue
 

6.

A pH below 7 indicates _______.

  acidity

  alkalinity

  presence of ions

  purity of the sample

  Half-n-half Clue
 

7.

The lead of a pencil mainly contains _______.

  lead

  graphite

  plastics

  carbon black

  Half-n-half Clue
 


 
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