Question

Assertion : Use of organochlorines pose serious problem to the ecosystems.

Reason :Organochlorines accumulate in all organisms.

• A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both the assertion and reason are false
• E. If the assertion is false but reason is true

Answer 1

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Rate of degradation of organochlorines is low.

Only 5% degradation of DDT per year has been reported in the soil.

Organochlorines are not soluble in water. They are lipophilic (lipid loving) and therefore tend to accumulate in the stored fats of all organisms

including the fatty tissues of animals. In excess the organochlorines can kill higher animals.

So, the correct answer is 'If both the assertion and reason are true but the reason is not a correct explanation of the assertion'