Neutralisation process — task. Science CBSE, Class 7 New.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Choose the correct answer for the following:

1.Why in toothpaste fomulation neutralisation reaction is useful?

It makes the toothpaste thick
It sweetens the toothpaste
It helps in removing stains
It reduces the acidity content of the mouth

2. Farmers add quicklime to acidic soil. The temperature of the soil rises after some time. What type of reaction takes place?

Exothermic - heat is absorbed when base reacts with acidic soil
Endothermic - heat is absorbed when base reacts with acidic soil
Endothermic - heat is released when base reacts with acidic soil
Exothermic - heat is released when base reacts with acidic soil

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