1.

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)​

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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