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Chemistry : Indicators, pH & Litmus


Answer the following questions by choosing the most appropriate option.

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Multiple choice

Your Performance  

1.

A pH scale reading of 13 indicates a _______.

  weak acid

  strong base

  weak base

  strong acid

  Half-n-half Clue
 

2.

Sodium hydroxide turns red litmus paper blue.

  True

  False

 

3.

Bromothymol blue solution turns acids _______.

  colorless

  yellow

  blue

  orange

  Half-n-half Clue
 

4.

Phenolphthalein solution turns bases _______.

  yellow

  pink

  colorless

  orange

  Half-n-half Clue
 

5.

A pH scale reading equal to 7 indicates _______ medium.

  a neutral

  an acidic

  a basic

  an unknown

  Half-n-half Clue
 

6.

Addition of phenolphthalein solution to an acid results in no color change.

  True

  False

 

7.

Methyl orange solution turns acids _______.

  yellow

  pink

  orange

  colorless

  Half-n-half Clue
 


 
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