1. In hydrocarbons, carbon is tetravalent and hydrogen is
2. Which of the following is used to make perfumes as well as flavoring agents?
3. Which of the following acid is utilised in the photography?
4. What is C6H6?
5. Who among the following discovered benzene?
6. From which of the following can ethanol be obtained?
7. Each element has a name and . . . . . . . .
8. When milk turns sour, . . . . . . . . is produced.
9. The weakest acid is . . . . . . . .
10. Due to increase in . . . . . . . . acid muscle cramps occur.
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