10th class Chemistry chapter 12 online mcq test with answers for matric part 2 chemistry unit 12(Hydrocarbons)

Chemistry 10th Class English Medium Unit 12 Online Test

Sr. #	Questions	Answers Choice
1	Oxidation of ethene with KMnO₄produces.	oxalic acid glyoxal ethene glycol Propene glycol
2	Dehydrohalogenation takes place in the presence of .	NaOH aqueous Alcoholic KOH Aqeous KOH Alcoholic NaOH
3	Incomplete combustion of alkanes produce.	Carbon dixoide only Carbon monoxide only Carbon monoxide carbon black and water Carbon dioxide and carbon black
4	Halogenation of methane produces following valuable chemical compounds used as solvents except.	Carbonterachloride Chloroform Carbon Black Chloromethane
5	The reduction of alkyl halides takes place in the presence of	Zn/HCl Na/HCl Mg/HCl Cu/HCl
6	If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one.	It will be saturated hydrocarbon It will hav 8 hydrogen atoms Its name will be n-butane. It will be least reactive.
7	Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine?	CH<sub>4</sub> C<sub>10</sub>H<sub>20</sub> C<sub>2</sub>H<sub>4</sub> C<sub>2</sub>H<sub>2</sub>
8	When bromine water is added to acetylene its red-brown colour is changed into:	red green violet discharged
9	Which one of the following is polmerized to from benzene?	ethane ethene methane ethyne
10	Which of one of the following is used as as fumigant:	Ethyl alcohol ethylene oxide ethylene glycol diethyl ether
11	Hydrogenation of vegetable oil to convert it into banaspatic ghee is carried out in the presence of catalyst:	Ni-metal Zn-metal Na - Metal Fe2O3
12	Ethen is prepared by heating a mixture of ethanol and excess of concentrated sulphuric acid at:	150°C 180°C 250°C - 300°C 400°C - 450°C

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