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Q.1. (A) Fill in the blanks: @), (1) Hydrocarbons having identical molecular formula but different structures are called, (2) Ethanoic acid is commonly known as, (3) A macromolecule formed by regular repetition of a small unit is called, , Q.1. (B) Choose and write the correct option: Q, (1) Whatare the products obtained on complete combustion of hydrocarbons?, , (a) CO+H,O (b) CO,+H, (©) CO,+H,O (4) CO+H,, (2) Ethanol is used as an additive to increase the efficiency of petrol, Such a fuel is called, , (a) Ethanol (6) Cananol (<) Gasohol_(d) Methanol, , I 1, 1 I, ! I, ! I, ! I, 1 I, 1 I, 1 I, ! !, ! !, 1 I, 1 I, ! I, 1 I, ! !, ! I, I Q.2 Answer the following: (Any 2) |, 1 (1) Why acetic acid is called glacial acetic acid? !, 1) Give TUPAC names for the given compounds I, 1 @ Fat OPER, : H-¢— c= H—C—C—C-C-H :, tt od 4, , ! H HH HH HH !, ' (3) _ Differentiate between natural and man-made macromolecules. :, .3 Answer the following: (Any 2) O), , 1 8 I, | (1) Draw electron dot structure of (i) CO, (ii) HO I, I 2) _ Detergents are superior to soaps - Give scientific reasons. I, 1 (3) Write short notes on (i) Structural Isomerism (ii) Covalent bonds. I, 1 i I, Q4 Answer the following: (Any 1) 6), , ; (1) Explain with example: (i) Substitution reaction (ii) Addition reaction :, | @) Classify saturated compounds. Give 1 example of each. I, i Soe !, s 7