21. If different carbon atoms are joined together to form open chain of carbon atoms with single bond only in a compound then such compounds are termed as
22. Which of the following is not present in animals, whereas plants have it?
23. Which of the following elements is found in all organic compounds?
24. . . . . . . . . is the simplest alcohol.
25. Alkanes are saturated hydrocarbons, in which a single bond is found between two carbon atoms. The general formula is:
26. Ethanol is formed during:
27. Which of the following is the major component of vinegar?
28. Which is a tribasic acid?
29. Of the following chemical compounds, which one may soon be used as a fuel for driving vehicles?
30. To prevent the misuse of ethanol produced for industrial use, it is used as a toxic substance . . . . . . . . is mixed with it to make it unsuitable for drinking.
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