Study the following statements about ozone:

(a) It is essential for breathing of living organisms.

(b) It is used to disinfect water.

(c) It absorbs ultraviolet rays.

(d) Its proportion in air is about 3%.

Which of these statements are correct?

(i) (a), (b) and (c)

(ii) (b) and (c)

(iii) (a) and (d)

(iv) All four

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Solution

(ii) (b) and (c)

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(b) It absorbs ultraviolet rays.

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Q. Non-metal which is essential for our life and all living beings inhale it during breathing is :

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Q. Question 14
Which non-metal is essential for our life and all living beings inhale it during breathing?

Which of the following statements is/are true about FAT?

Code:

Only 1&2
Only 2 &3
Only 1 &3
None of these

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