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

Hovv will you differentiate that vvhether the given gas is ethane or ethene?

Give two chemical tests to distinguish between dilute nitric acid and hydrochloric acid.

What is hydrogenation? How hydrogenation of ethene occurs? Give one use of hydrogenation.

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Nitric acid on standing develops brownish colour which may be attributed to the presence of :

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 Concentrated nitric acid oxidises phosphorus to :

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When treated with nitric acid which of the following liberate hydrogen?

Give two equations to show the conversion of a unsaturated compound to
saturated compound.

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The catalyst used in the manufacture of HNO₃ by Ostwald process is

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Aqua regia is a mixture of _______ and________

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Furning nitric acid is obtained by dissolving an excess of _______ in conc. Nitric acid

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98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______

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Ammonal is a mixture of ________ and __________

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3 Cu + 8 HNO₃ (dilute) → _______ + 4H₂O + _________

What are addition reactions? Why ethene undergo addition reactions? Give
two examples.

Give three uses of ethene.

Write balanced equation for the preparation of nitric acid from potassium nitrate.

Write the observation and name of the product for the following
(i) When ethene is passed in bromine solution in CCl₄.
(ii) When Baeyer's reagent reacts with ethene.

How is ethyne prepared in the laboratory?

Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C

What are addition reactions? How are addition reactions of ethene different
from ethyne?