ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test With Answers

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ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 The state of hybridization of carbon atom in methane is: sp<sup>3</sup> sp<sup>2</sup> sp dsp<sup>2</sup>
2 The compounds which have any atom other than Carbon atom, in rings are called as Monocyclic Heterocyclic Homocyclic None of the above
3 The open chain organic compounds are called Linear compounds Aromatic Aliphatic Both A and B
4 Normal by product of cracking is Ethane Butane Benzene All of them
5 In alkynes the bonds between carbon atoms are All sigma bonds All pi(<i style="box-sizing: border-box; color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 19.8px;">π</i>) bonds One is sigma and two are<i style="box-sizing: border-box; color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 19.8px;">π</i>(pi) bonds One is<i style="box-sizing: border-box; color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 19.8px;">π</i>(pi) and two are sigma bonds
6 The general formula for alkenes is C<sub>n</sub>H<sub>2n+1</sub> 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>
7 In sp2type hybridization the three equivalent sp2orbitals lie in the same plane and at angle of 0<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 60<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 120<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 180<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
8 Sp3 hybridization occurs when carbon is bound to Four other atoms Three other atoms Two other atoms One other atoms
9 Hydrocarbons contain C and S only C and H only C, H, and O only C, H, O and N only
10 Unsaturated hydrocarbon containing a double bond are called paraffin Alkanes Olefins Acetylene
11 The characteristic reactions of alkanes are Addition reactions Substitution reactions Condensation reactions Polymerization reactions
12 Which of the following compounds contains a triple bond? Alkane Alkene Alkyne Benzene
13 Which of the following gases is used for illuminating purpose? Methane Ethane Propane Butane
14 The next homologue of C10H22will be C<sub>9</sub>H<sub>20</sub> C<sub>12</sub>H<sub>26</sub> C<sub>11</sub>H<sub>24</sub> C<sub>13</sub>H<sub>28</sub>
15 Compounds of carbon and hydrogen in which the tetra valency of carbon is fully satisfied are called, Saturated Un-saturated Magnetic Para-magnetic
16 Identify the compound which has a bond angle of 109.5° Ethyne Ethere Methane Benzene
17 The active part in a molecule is called Homologous series Functional group Chemical bonding Ionic complex
18 When a compound X is passed through a dilute alkaline solution of KMnO4the pink colour of solution is discharged. The compound X is possbibly Methane Ethane Ethene Benzene
19 Which of the following contains single bonds Benzene Alkyne Alkene Alkane
20 The process in which one s and two p orbitals mix up with each other is called Sp-hybridization Sp<sup>2</sup>-hybridization Sp<sup>3</sup>-hybridization Dsp<sup>2</sup>-hybridization
21 The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called, Hybridization Polymerization Isomerisation Carbonization
22 The structure of benzene is Hexagonal Pyramidal Square planer Tetrahedral
23 Which is a mixture of low boiling hydrocarbon Natural gas Petroleum Wood Graphite
24 Which of the following is complex? CaSO<sub>4</sub>. 0.5H<sub>2</sub>O (C<sub>6</sub>H<sub>10</sub>O<sub>5</sub>)<sub>n</sub> C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> CH<sub>4</sub>
25 Polythene is a polymer of Ethane Ethene Acetone Propylene
26 Acetylene had a characteristic ethereal smell resembling that of Ginger Vinegar Garlic Onion
27 Replacement of hydrogen atom by - SO3H group in benzene is called Nitration Alkylation Sulphonation Acylation
28 Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO4as catalyst Carbinol Methanol Ethanol Glycol
29 On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives Methyl alcohol Ethyl alcohol Ethyl hydrogen sulphate Methyl hydrogen sulphate
30 Identify the hydrocarbon formed, when ethyl bromide reacts with, alcoholic KOH at 100° Methane Ethane Ethene Ethyne
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