English Medium कक्षा १० - CBSE Question Bank Solutions for Science

What happens when propanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid? Write equation of the reaction involved.

propanol into propanoic acid?
Name the process in each case and write the equations of the reactions involved.

How would you distinguish experimentally between an alcohol and  carboxylic acid on the basis of a chemical property?

What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H₂SO₄?

What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one? What does it show?

What type to compound is CH₃COOH?

What is the physical state of CH₃COOH?

Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH₃COOH, CH₃OH, C₂H₅OH, HCOOH, CH₃CHO
Give reasons for your choice.

What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.

What is an oxidising agent? 

Name two oxidising agents which can oxidise ethanol to ethanoic acid.

Describe one reaction of a carboxylic acid.

How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.

How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.

How would you distinguish between ethanol and ethanoic acid by chemical test?

What happens when ethanoic acid reacts with sodium hydroxide? Write equation of the reaction involved.

An organic compound X of molecular formula C₂H₄O₂ gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.

When ethanoic acid reacts with sodium hydrogen carbonate, 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.

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.