Saleha Pervez and Shikha Goel Solutions for Chapter: Study of Compounds, Exercise 9: ARCHIVES*(Last 6 Years)

Choose from the following metals to answer the question given below.

Aluminium, calcium, copper, iron, magnesium, potassium, nickel, zinc.

Name a metal that does not react with cold water.

Name the gas evolved when the mixtures of calcium hydroxide and ammonium chloride are heated. (Ammonia/ Chlorine)

Write the balanced chemical equation to illustrate the reducing nature of ammonia.

Select from the list the gas that matches the description given.
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
This gas is used as a reducing agent in reducing the copper oxide to copper.

Select from the list the gas that matches the description given.
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
This gas produces dense white fumes with ammonia gas.

Select from the list the gas that matches the description given.
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
This gas has a characteristic rotten egg smell.

Give the balanced chemical equation for the action of sulphuric acid on sulphur.

In the given equation, identify the role played by concentrated Sulphuric acid.
$\mathrm{S}+2{\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4\to 3{\mathrm{S}\mathrm{O}}_2+2{\mathrm{H}}_2\mathrm{O}$