Subject :NSO Class : Class 8
Observe the figure of destructive distillation of coal. What are the three fractions X, Y and Z?
| X | Y | Z | |
| A | Coal gas | Coal tar | Coke |
| B | Coal gas | Coke | Coal |
| C | Coal gas | Coal tar | Impure coal |
| D | Carbon dioxide | Coal tar | Coal |
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
Match column I with column II and choose the correct option from the codes given below.
| Column I (Amorphous forms of carbon) | Column II (Uses) |
| (P) Lamp black | (i) For making electrodes for dry cell |
| (Q) Bone charcoal | (ii) In gas masks |
| (R) Wood charcoal | (iii) In extraction of metals |
| (S) Gas carbon | (iv) To remove colour from sugarcane juice |
| (T) Coke | (v) For making black shoe polish |
| P | Q | R | S | T | |
| A | (i) | (v) | (iii) | (ii) | (iv) |
| B | (v) | (iv) | (ii), | (iii) | (i) |
| C | (ii) | (iii) | (iv) | (i) | (v) |
| D | (v) | (iv) | (ii) | (i) | (iii) |
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Subject :NSO Class : Class 8
Fill in the blanks left in the classification of the fossil fuels.
| q | u | v | w | x | ||
| A | Petroleum | Coal | Petroleum gas | Bitumen | Coal gas | Coke |
| B | Coal | Petroleum | Coal gas | Coke | Petroleum gas | Bitumen |
| C | Coal | Petroleum gas | Coal | Charcoal | Gasoline | Coal tar |
| D | Petroleum | Coal | Gasoline | Bitumen | Natural gas | Coke |
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 8
