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Complete the crossword Fig. 6.1 with the help of the cluesDown2. A chemical process in which a substance reacts with oxygen to give off heat. (10)3. Petrol is used as a __________ in automobiles. (4) 6. It is as hard as stone and black in colour .(4) |
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Answer» Complete the crossword Fig. 6.1 with the help of the clues Down 2. A chemical process in which a substance reacts with oxygen to give off heat. (10) 3. Petrol is used as a __________ in automobiles. (4) 6. It is as hard as stone and black in colour .(4) |
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