An organic compound $X$ of molecular formula $C_{2} H_{4} O_{2}$ gives brisk effervescence with sodium hydrogencarbonate. Give the name and formula of $X$ .

Important Questions on Carbon And its Compounds

EASY

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Short Answer Type Questions>Q 44

A mixture of ethyne (acetylene) and oxygen is burnt for welding. Can you tell why a mixture of ethyne and air is not used ?

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Short Answer Type Questions>Q 44

Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Short Answer Type Questions>Q 45

What is meant by an addition reaction? Give an example (with equation) of an addition reaction of an alkene.

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Short Answer Type Questions>Q 45

What is added to groundnut oil when it is to be converted to vanaspati ghee?

EASY

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Short Answer Type Questions>Q 45

Which of the two is better for our health: butter or vegetable oil ? Why ?

HARD

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Long Answer Type Questions>Q 46

When ethanoic acid reacts with sodium hydrogencarbonate, then a salt X is formed and a gas Y is evolved. Name the salt X and gas Y. Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also write the chemical equation of the reaction involved.

HARD

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Long Answer Type Questions>Q 46

Give any two uses of ethanoic acid.

HARD

10th CBSE

IMPORTANT

Science for Tenth Class Part - 2 Chemistry>Chapter 4 - Carbon And its Compounds>Long Answer Type Questions>Q 47

Esters are sweet-smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester. Also write the names of all the substances involved in the process of esterification.