ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test With Answers

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ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test

Sr. # Questions Answers Choice
1 Hydrocarbons contain : Carbon only carbon Hydrogen only Carbon & hydrogen Carbon , hydrogen & halogen
2 Which one gives acidic reactions? CH<sub>3</sub>----C<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">≡C-------CH<sub>3</sub></span> CH<sub>3</sub>-----CH<sub>2</sub>-----HC=CH----CH<sub>2</sub> CH<sub>3</sub>----CH=CH<sub>2</sub> CH<sub>3</sub>-----C<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">≡CH</span>
3 Mustard gas is a : Gas Liquid Solid High boiling point
4 During reaction of O2and alkenes, a product: Glycol Epxide Halohydrin Ethylene glycol
5 Hybridization in alkanes is: sp sp<sup>2</sup> sp<sup>3</sup> dsp<sup>2</sup>
6 Which is liquid among the following alkenes? Ethane Propene Butene Pentene
7 Eletronegativity difference in C-C bond in alkanes is: Zero Double Half 4.0
8 Alkanes are least reactive towards: Acids and bases Reducing agents Oxidizing agents All of these
9 Boiling point of n-butane is: -102<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°C</span> -75<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°C</span> -55<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°C</span> 55<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°C</span>
10 Alkanes are gases : C<sub>1</sub>-C<sub>4</sub> C<sub>5</sub>-C<sub>10</sub> C<sub>11</sub>-C<sub>15</sub> C<sub>10</sub>-C<sub>20</sub>
11 Alkyne is : CH<sub>3-</sub>CH<sub>3</sub> CH<sub>4</sub> CH<sub>2=</sub>CH<sub>2</sub> C<sub>2</sub>H<sub>2</sub>
12 Alkene general formula : C<sub>n</sub>H<sub>2n+2</sub> C<sub>n</sub>H<sub>2n</sub> C<sub>n</sub>H<sub>2n-2</sub> C<sub>n</sub>H<sub>2n+1</sub>
13 Odour of alkene is: Fruity Odourless Zarlic like Irritating
14 acetylene can be converted into-while passing through a Cu-tube at 300°C: Glyoxal Vinyl acetylene Vinyl alcohol Benzene
15 Which is more active ? Alkanes Alkenes Alkynes Benzene
16 Alkanes have functional group : ----X --OH ----COH No functional group
17 Free radical mechanism of halogenation of alkanes follow step: Initiation Propagation Termination All of these
18 Which is symmetric alkene? CH=C-CH<sub>2</sub> CH<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">≡CH</span> CH<sub>3</sub>-C<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">≡C - CH<sub>3</sub></span> B and C
19 Which decolourizes the colour of Br3 CH<sub>4</sub> CH<sub>3-</sub>CH<sub>3-</sub>CH<sub>3</sub> CH<sub>2=</sub>CH<sub>2</sub> CH<sub>3-</sub>CH<sub>3</sub>
20 Reaction of ethanes with KMnO4 gives: Ozonide Glyoxal Glycol Oxalic acid
21 Which one of the following gases is used for artificial ripening of fruits ? Ethane Ethyne Methane Propane
22 When methane reacts with Cl2in the presence of diffused light the products obtained are? Chloroform only Carbon tetrachloride only Chloromethane and dichloromethane Mixture of a,b,c
23 β-β- dichloroethyle sulphide is commonly known as: Mustared gas Laughing gas Phosgene gas Bio gas
24 Synthesis rubber is made by polymerization : Chloroform Acetylene Divinyl acetylene Butene
25 The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule: Hund's rule Markownikov's rule Pauli's Exclusion Principle Auf bau Principle
26 Vinyl acetylene combines with HCl to form: Polyacetylene Benzene Chloroprene Divinyl acetylene
27 The presence of a double bond in a compound in the sign of: Saturation Unsaturation Subsitution None
28 Formula of chloroform is: CH<sub>3</sub>Cl CCl<sub>4</sub> CH<sub>2</sub>Cl<sub>2</sub> CHCl<sub>3</sub>
29 Preparation of vegetable ghee involves: Halogenation Hydrogenation Hydroxylation Dehydrogenation
30 Benzene is prepared from n-hexane in the presence of catalyst Cr<sub>2</sub>O<sub>3</sub> Al<sub>2</sub>O<sub>3</sub> SiO<sub>2</sub> All above
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