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WorksheetsProperties of Acid and Alkali
Total questions: 15
Worksheet time: 8mins
Properties of acid
pH less than 7
Corrosive
Tastes bitter
Turns blue litmus paper to red
Acid reacts with metal to produce ___________ gas.
oxygen
hydrogen
carbon dioxide
nitrogen
Which of the following will change the red litmus paper to blue?
vinegar
lemon
Soap water
coffee
__________ is used to make fizzy drink.
vinegar
Sulphuric acid
Acetic acid
Carbonic acid
Sodium hydroxide is used
to make fertilisers.
to cure gastritis.
to make battery.
to make detergent.
The pH scale is a range from:
1-7
1-14
0-14
1-20
Acid changes the colour of a ................. litmus paper to ........
red.....blue
red....purple
blue...red
blue...colourless
How does ammonia taste?
sweet
sour
bitter
salty
What are the examples of acid ?
Sodium hydroxide solution
Hydrochloric acid
Soap water
Vinegar
What are the examples of alkaline ?
soap
Sodium hydroxide solution
coffee
toothpaste
What is the pH range of alkalis?
pH 1 - 6
pH 7
pH 8 - 14
What is the pH of a neutral solution?
1
5
7
14
Acid and alkalis show their properties only in the presence of (a)
What happens after a few drops of concentrated sodium hydroxide is dropped on the filter paper?
the filter paper becomes blue
a hole appears on the filter paper
a pungent smell is released from the filter paper
a translucent spot appears on the filter paper
Weak acid shows a smaller pH value
True
False
