Organic Chemistry Very Short Ans Type Class-10 Concise ICSE Selina Solutions Chapter-12. We Provide Step by Step Answer of Very Short Ans Type Questions of Miscellaneous Exercise-12 for ICSE Class-10 Concise Chemistry. The given Solutions is according to the Latest editions. Visit official Website CISCE for detail information about ICSE Board Class-10.

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Organic Chemistry Very Short Ans Type Class-10 Concise ICSE Selina Solutions Chapter-12

Very Short Ans Type Questions on Organic Chemistry

Page-224

Que-1: Choose the correct word/phrase from within the brackets to complete the following sentences:

(a) The catalyst used for conversion of ethene to ethane is commonly (nickel /iron/cobalt)
(b) When acetaldehyde is oxidised with acidified potassium dichromate, it forms (ester/ethanol/ acetic acid)
(c). Ethanoic acid reacts with ethanol in the presence of concentrated H₂SO₄ so as to form a compound and water. The chemical reaction which takes place is called (dehydration/hydrogenation/ esterification)
(d) Write the equation for the reaction taking place between 1, 2-dibromoethane and alcoholic potassium hydroxide.
(e) The product formed when ethene gas reacts with water in the presence of sulphuric acid ………… (ethanol/ethanal/ethanoic acid)

Ans: 
(a) Nickel
(b)  Acetic acid
(c). Esterification
(d) 
(e)  Ethanol

Que-2: From the following organic compounds given below, choose one compound in each case which relates to the description [i] to [iv]:

[Ethyne, ethanol, acetic acid, ethene, methane]
(a) An unsaturated hydrocarbon used for welding purposes.
(b) An organic compound whose functional group is carboxyl.
(c) A hydrocarbon which on catalytic hydrogenation gives a saturated hydrocarbon.
(d) An organic compound used as a thermometric liquid.

Ans: 
(a)  Ethyne
(b) Acetic acid
(c). Ethene
(d) Ethanol 

Que-3: Name the following:

(a) The process by which ethane is obtained from ethane
(b) A hydrocarbon which contributes towards the greenhouse effect
(c) The distinctive reaction that takes place when ethanol is treated with acetic acid
(d) The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure
(e) The reaction when an alkyl halide is treated with alcoholic potassium hydroxide
(f) The hydrocarbons containing functional group.

Ans: 
(a) Hydrogenation
(b) Methane
(c) Esterification
(d) Catenation
(e) Dehydrohalogenation
(f) ketones

Que-4: Identify the functional group in :

(a) Dimethyl ether
(b) Propanone

Ans: 
(a) Dimethyl ether contains the functional group Alkoxy (ether). It is circled in its structural formula below:

(b) Propanone contains the functional group Keto. It is circled in its structural formula below:

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