9th Class Chemistry English Medium Online Test For Full Book With Answers

9th Class Chemistry English Medium Online Test For Full Book

Sr. # Questions Answers Choice
1 Which hydrocarbon has 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>2</sub> C<sub>2</sub>H<sub>4</sub>
2 Marsh gas is mostly consisted of. Butane Propane Ethane Methane
3 Which is the substitution reaction in the following? Halogenation of alkenes Halogenation of alkynes Bromination of alkene Halogenation of alkanes
4 Incomplete combustion of alkanes produces. Carbon dioxide only Carbon monoxide only Carbon monoxide and carbon black Carbon dioxide and carbon black
5 Functional group of Alcohols is -COOH -C=0 C-O-C -OH
6 The functional group -COOH is found in. Aldehydes Esters Carboxylic acids alcohols
7 In which of the following groups , oxygen is attached on both sides with carbon atoms. Ketone group Ether group Aldehyde group Easter group
8 General formula of Alkyl radical is.. C<sub>6</sub>H<sub>2n-2</sub> C<sub>n</sub>H<sub>2n+2</sub> C<sub>11</sub>H<sub>2n-1</sub> C<sub>n</sub>H<sub>2n-2</sub>
9 General formula of Alkynes is. C<sub>6</sub>H<sub>2n-2</sub> C<sub>n</sub>H<sub>2n+2</sub> C<sub>11</sub>H<sub>2n-2</sub> C<sub>n</sub>H<sub>2n-2</sub>
10 General formula of Alkane is. C<sub>10</sub>H<sub>2n-2</sub> C<sub>6</sub>H<sub>26</sub> C<sub>11</sub>H<sub>2n-2</sub> C<sub>n</sub>H<sub>2n-2</sub>
11 ____________ is synthetic fiber. Cotton Woal Nylon Silk
12 Percentage of methane present in natural gas is. 75% 80% 85% 90%
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