(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Which of the following belong to same homologous series?

C3H₈, C₃H₆, C₄H₈, C₄H₆

How many isomers of the following hydrocarbons are possible?

(a) C₃H₈ 

(b) C₄H₁₀

Explain with the help of a balanced equation, the brown ring test for nitric acid.

What is major source of organic compounds?

Why is freshly prepared ferrous sulphate solution used in the ring test?

Give four differences between organic and inorganic cornpounds.

Brown ring disappear if the test tube is disturbed.

Fill in the blank:

Organic compounds are essentially_________compounds. They
show ___________Reaction and their rates are ___________.

Fill in the blank:

One of the products of combustion of organic compounds is
always__________

Fill in the blank:

More than 90% of the known organic compounds are. ________

Fill in the blank:

Vital force theory was discarded by the synthesis of__________ in laboratory.

Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.

Explain the fact that why organic com pounds are Iarge in number.

What is homologous series?

Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.

Give reason for the following:
Aluminum does not react with nitric acid of any concentration.

What is the difference in molecular formula of any Two adjacement homologues in terms of types of atoms and molecular mass?

Give reason for the following:
Conc. Nitric acid renders iron passive.

What is eaten ation? 'Why carbon shovv rnaximurn tendency of catenation?

Give reason for the following:
Nitric acid is used in purification of gold.