ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Alkanes are least reactive towards: Acids and bases Reducing agents Oxidizing agents All of these
2 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>
3 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>
4 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>
5 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>
6 Odour of alkene is: Fruity Odourless Zarlic like Irritating
7 acetylene can be converted into-while passing through a Cu-tube at 300°C: Glyoxal Vinyl acetylene Vinyl alcohol Benzene
8 Which is more active ? Alkanes Alkenes Alkynes Benzene
9 Alkanes have functional group : ----X --OH ----COH No functional group
10 Free radical mechanism of halogenation of alkanes follow step: Initiation Propagation Termination All of these
11 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
12 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>
13 Reaction of ethanes with KMnO4 gives: Ozonide Glyoxal Glycol Oxalic acid
14 Which one of the following gases is used for artificial ripening of fruits ? Ethane Ethyne Methane Propane
15 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
16 β-β- dichloroethyle sulphide is commonly known as: Mustared gas Laughing gas Phosgene gas Bio gas
17 Synthesis rubber is made by polymerization : Chloroform Acetylene Divinyl acetylene Butene
18 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
19 Vinyl acetylene combines with HCl to form: Polyacetylene Benzene Chloroprene Divinyl acetylene
20 The presence of a double bond in a compound in the sign of: Saturation Unsaturation Subsitution None
21 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>
22 Preparation of vegetable ghee involves: Halogenation Hydrogenation Hydroxylation Dehydrogenation
23 Coal is used to bake bricks in lime kiln: 40% 60% 80% None of these
24 In the presence of high temperature and pressure peat is converted to: Lignite Polymorphism Polymerization Catenation
25 Self linkage of carbon to produce long chains isomerism Polymorphism Polymerization Catenation
26 Wohler synthesized first of all the organic compound: Carbohydrates Urea Aniline Toluene
27 Source of organic compounds primarily is: Plants Animals Minerals A &amp; B
28 Number of isomers of butane are: One Two Three Four
29 type of hybridization in CH≡CH is: sp sp<sup>2</sup> sp<sup>3</sup> dsp<sup>2</sup>
30 Type of isomerism in BrCH=CHBr is: Structural isomerism <blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">Conformational isomerism</blockquote> Geometrical isomerism Positional isomerism
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