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JEE Exam  >  JEE Test  >  Weekly Tests Preparation  >  Test: Properties and Preparation of Alkynes - JEE MCQ

Properties and Preparation of Alkynes - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Properties and Preparation of Alkynes (10 Questions)

You can prepare effectively for JEE Weekly Tests for JEE Preparation with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Properties and Preparation of Alkynes". These 10 questions have been designed by the experts with the latest curriculum of JEE 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

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Test: Properties and Preparation of Alkynes - Question 1
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Product of above reaction is:

Detailed Solution: Question 1

Test: Properties and Preparation of Alkynes - Question 2
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End product of the following sequence of reactions is

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Test: Properties and Preparation of Alkynes - Question 3
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A compound (X) reacts with ammonical to give a white precipitate, and on oxidation with hot alkaline gives the acid, , therefore is

Detailed Solution: Question 3

Ammonical silver nitrate (Tollens reagent) reacts with 1-alkyne only and give white ppt so reactant should be terminal alkyne.
Reaction with hot is: 

Test: Properties and Preparation of Alkynes - Question 4
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An unknown compound A has a molecular formula , when is treated with an excess of , a new substance with formula is formed. A forms a white precipitate with ammonical silver nitrate solution. A may be

Detailed Solution: Question 4

Let us form an equation according to the given condition

is butyne. It can either be But-1-yne or But-2-yne.
But-1-yne
But-2-yne
If the triple bond is present with the carbon atom 1 and 2 , then the hydrogen atom is present at C-atom 1 so it is acidic in nature.
is acidic in nature.
Since Ammoniacal silver nitrate is reducing agent, it reduces butyne, and butyne oxidize ammonical silver, nitrate solution.
We know that oxidation and Reduction occur together.
But-1-yne reduces by tollen's reagent and form white precipitate

Test: Properties and Preparation of Alkynes - Question 5
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CH3 − C ≡ CMgBr can be prepared by the reaction of

Detailed Solution: Question 5

CH3 − C ≡ CMg Br can be prepared by the reaction of CH3 − C = CH with CH3MgBr. This method is used in preparation of higher alkynes from lower alkynes. The chemical equation for the formation of CH3 − C ≡ CMgBr is given below

Test: Properties and Preparation of Alkynes - Question 6
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In the reacton
The product is:

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Test: Properties and Preparation of Alkynes - Question 7
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The major product formed in the following reaction is

Detailed Solution: Question 7

This reaction is show birch reduction mechanism.Birch reaction give trans alkene on treatment of alkyne . In this reaction generally use reagent is alkali metal with liquid NH3

Test: Properties and Preparation of Alkynes - Question 8
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The main product of the reaction is :

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It is a streoselective reaction and in it a trans product is formed.

Test: Properties and Preparation of Alkynes - Question 9
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Identify the reagent from the following list which can easily distinguish between 1 -butyne and 2-butyne

Detailed Solution: Question 9

Ammonical cuprous chloride gives precipitate (red) only with terminal alkynes, i.e. alkynes having acidic hydrogen atom, such as butyne-1

Test: Properties and Preparation of Alkynes - Question 10
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  Product is : Product

Detailed Solution: Question 10

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About this JEE Practice Test

This test contains 10 MCQs on Properties and Preparation of Alkynes with detailed solutions for each question. It is part of the Weekly Tests for JEE Preparation course on EduRev, designed to align with the current JEE syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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