1) Ethene' is a. alkane b. alkene c. alcohol d. carboxylic acid
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2) Most of the fuels such as petroleum has a. carbohydrates b. fats c. hydrocarbons d. metals
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3) Molecules in high density polythene are a. closely packed than low density polythene b. far apart than in low density polythene c. more vigorous than in low density polythene d. more violent than in low density polythene
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4) Generally methane gas is known as a. compressed gas b. liquid gas c. natural gas d. artificial gas
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5) Gases are a. incompressible b. compressible c. colorful d. dense than liquids and solids
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6) When solids are heated, they a. expand more than liquids b. expand more than gases but less than liquids c. expand more than liquids but less than gases d. expand less than both liquids and gases
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7) The change of shape of liquid according to the shape of container is due to a. space between particles b. collision of particles c. movement of particles d. force of attraction between particles
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8) Melting point of 'sulphur' is a. 113 °C b. 311 °C c. both d. none
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9) To separate the molecules of ethene dichloride, the compound is a. heated lightly b. heated gently c. heated strongly d. heated for a long time
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10) For security and military purpose, ammonia is used in a. explosives b. bullets c. flash bangs d. tear gas shells
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11) The shape of solid is a. changeable b. definite c. irregular d. regular
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12) The reaction in which heat is taken while taking place, is known as a. exothermic reaction b. endothermic reaction c. reversible reaction d. substitutive reaction
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13) Large and long molecules made by the linkage of small molecules are known as a. polyesters b. polymers c. polypeptides d. polysomerism
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14) John Hyatt's invention was about a. cellulose in wood b. soil particles under plant roots c. plant stem d. barks of wood
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15) Polyvinyl chloride is a a. metal b. plastic c. metalloid d. gas
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16) Oils is separated from crude oil through the process of a. simple distillation b. fractional distillation c. filtration d. vaporization
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17) The name of the oil from which ethene is obtained is a. naphtha b. kerosene c. diesel d. bitumen
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18) In the process of forming iron sulfide by iron and sulphur, the reactant is a. iron only b. sulphur only c. iron and sulphur both d. sulphuric acid
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19) The properties of 'plastic' depends on a. molecules and their arrangement b. linked atoms c. type of hydrocarbon d. properties of elements
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20) When ethene and chlorine combine together, they form a. chlorine ethenide b. ethene chloride c. ethene dichloride d. ethene trichloride
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