Aspects of chemical changes — 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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Read the Assertion and Reason carefully. Choose the correct option:

1. Assertion: Melting ice is a chemical change.

Reason: Water changes from solid state to liquid state.

Both Assertion and Reason are true, and Reason correctly explains Assertion.
Both Assertion and Reason are true, but Reason does not correctly explain Assertion.
Assertion is true, but Reason is false.
Assertion is false, but Reason is true.

2. Assertion: Burning candle wax is a chemical change.

Reason: Wax reacts with oxygen to form new substances.

Both Assertion and Reason are true, and Reason correctly explains Assertion.
Both Assertion and Reason are true, but Reason does not correctly explain Assertion.
Assertion is true, but Reason is false.
Assertion is false, but Reason is true.

Did you find an error?

17. Aspects of chemical changes