UPSC Exam  >  UPSC Tests  >  Science & Technology for UPSC CSE  >  Test: Properties of Hydrocarbons - UPSC MCQ

Test: Properties of Hydrocarbons - UPSC MCQ


Test Description

10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Properties of Hydrocarbons

Test: Properties of Hydrocarbons for UPSC 2025 is part of Science & Technology for UPSC CSE preparation. The Test: Properties of Hydrocarbons questions and answers have been prepared according to the UPSC exam syllabus.The Test: Properties of Hydrocarbons MCQs are made for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Properties of Hydrocarbons below.
Solutions of Test: Properties of Hydrocarbons questions in English are available as part of our Science & Technology for UPSC CSE for UPSC & Test: Properties of Hydrocarbons solutions in Hindi for Science & Technology for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Properties of Hydrocarbons | 10 questions in 15 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Science & Technology for UPSC CSE for UPSC Exam | Download free PDF with solutions
Test: Properties of Hydrocarbons - Question 1

Unsaturated carbon compounds on combustion give:

Detailed Solution for Test: Properties of Hydrocarbons - Question 1

Unsaturated hydrocarbons like ethyne also known as acetylene burn to produce a yellow sooty flame due to incomplete combustion in air.

The flame is sooty because the percentage of carbon is comparatively higher than that of alkanes and so does not get completely oxidized in air.

Test: Properties of Hydrocarbons - Question 2

The products obtained after the combustion of methane are:

Detailed Solution for Test: Properties of Hydrocarbons - Question 2

The combustion of methane produces the following:

  • Carbon dioxide (CO2)
  • Water (H2O)
  • Heat
  • Light

The chemical reaction can be summarised as:

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) + Heat + Light

Test: Properties of Hydrocarbons - Question 3

The oxidising agent used to convert alcohols into carboxylic acid is:

Detailed Solution for Test: Properties of Hydrocarbons - Question 3

Alkaline potassium permanganate is an effective oxidising agent.

  • It converts alcohols into carboxylic acids.
  • It is often used in reactions needing strong oxidation.

Alkaline potassium permanganate is a good oxidising agent.

Test: Properties of Hydrocarbons - Question 4

In the hydrogenation of vegetable oils, the unsaturated hydrocarbons generally add hydrogen in the presence of:

Detailed Solution for Test: Properties of Hydrocarbons - Question 4

Addition of hydrogen across C-C double bonds is called hydrogenation. Unsaturated hydrocarbons add hydrogen in the presence of catalysts such as nickel/palladium to give saturated hydrocarbons. Vegetable oils used for cooking are long unsaturated hydrocarbons which are healthy.

Test: Properties of Hydrocarbons - Question 5

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:

Detailed Solution for Test: Properties of Hydrocarbons - Question 5

Incomplete combustion of fuel gives out sooty flame which contains unburnt carbon particles which deposits on the bottom of cooking utensils.

Test: Properties of Hydrocarbons - Question 6

The reaction in which oxidising agents supply nascent oxygen for oxidation of alcohols to their respective acids is known as:

Detailed Solution for Test: Properties of Hydrocarbons - Question 6

Oxidation is gain of oxygen. In this reaction oxygen is added to the reactant to form product. 

Test: Properties of Hydrocarbons - Question 7

The cooking gas used in our homes is mainly an:

Detailed Solution for Test: Properties of Hydrocarbons - Question 7

Saturated hydrocarbons contain C-C single bond and on complete combustion they produce large amounts of heat. The cooking gas used in house is Butane (C4H10) known as LPG or Methane (CH4) known as CNG.

Test: Properties of Hydrocarbons - Question 8

The molecular formula of benzene is:​

Detailed Solution for Test: Properties of Hydrocarbons - Question 8

The chemical formula of benzene is C6H6, so it has six carbon atoms and six hydrogen atoms.

Test: Properties of Hydrocarbons - Question 9

CH2=CH2 + H2 → CH3-CH3 is an example of:

Detailed Solution for Test: Properties of Hydrocarbons - Question 9

The reaction in which an element or molecule is added to unsaturated hydrocarbons is called addition reaction.

Test: Properties of Hydrocarbons - Question 10

The conversion of butene to butane in presence of nickel is an example of:

Detailed Solution for Test: Properties of Hydrocarbons - Question 10

The reaction in which an element or molecule is added to unsaturated hydrocarbons is called addition reaction. In the above reaction unsaturated hydrocarbon is converted into saturated hydrocarbon.

114 videos|429 docs|209 tests
Information about Test: Properties of Hydrocarbons Page
In this test you can find the Exam questions for Test: Properties of Hydrocarbons solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Properties of Hydrocarbons, EduRev gives you an ample number of Online tests for practice
114 videos|429 docs|209 tests
Download as PDF