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

Fill in the blank:

One of the products of combustion of organic compounds is
always__________

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

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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.

Give the name and formulae of one member of each of the following:

(a) Saturated hydrocarbons

(b) Unsaturated Hydrocarbons

What is an alkyl group?

Give reason for the following:
Aqua regia dissolves gold and platinum.

Give the names of any three alkyl groups. How are they formed?

Give reason for the following :
Nitric acid usually does not yield hydrogen from acids.

Give reason for the following:
Lighting is a blessing in disguise.

Write the IUPAC name of the foloowing:

CH₃CH₂CH₂CH₂CH₃

Write the IUPAC name of the foloowing: 

CH₃CH₂Ch= CHCH₃