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

Fill in the blank with appropriate word/words.
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?

Complete and balance the following equation:
Cu + HNO₃ → NO₂ + ________+ _________

Write the equations to show what happens when ethyne gas reacts with
Bromine water

How will you convert
Ethyne to ethane

Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.

Give two chemical tests to distinguish between ethane and ethyne .

State the conditions for the oxidation of ammonia to nitrogen monoxide [nitric oxide], in the manufacture of nitric acid by Ostwald's process. Write the balanced equcation for the reaction.

Write a balanced equation for the production of nitrogen dioxide using copper.

Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?

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

During a thunderstorm, the rainwater contains nitric acid. The nitric acid is formed as a result of three chemical reactions. Describe or write balanced chemical equation for these three reactions.

Write three uses of ethyne.

Explain the following:
 Ethene and ethyne burn with sooty luminous flame