1.

Assertion : 1.231 has three significant figures. Reason : All numbers right to the decimal point are significant.

Answer»

If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :1.231 has FOUR significant figures all no. from left to right are COUNTED, STARTING with the first DIGIT that is not ZERO for calculating the no. of significant figure.


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