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Subject :NSO    Class : Class 8

Few statements are given below. Identify the incorrect statements and mark the appropriate option.
(i) In fractional distillation of petroleum, hydrocarbon with lowest boiling point condenses first.
(ii) Useful substances obtained from petroleum and natural gas are termed as ‘Petrochemicals’.
(iii) Coke is used in the extraction of many metals.
(iv) Paraffin wax used in candles, vaseline, grease, polish is obtained by destructive distillation of coal.

A (i) and (ii)
B (i) and (iv)
C (i), (ii) and (iii)
D (ii) and (iv)

It should be d

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8

Ans 3: (Master Answer)

Class : Class 1
The correct answer is B.

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