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

Fill in the blank.
The salt which will not react with NH₄OH solution ______[ZnCl₂, CuCl₂ / NH₄Cl/ FeCl₂]

Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH₄OH

Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution.Describe the effect of Adding ammonium hydroxide to each portion in turn till it is in excess.

State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate solution.

How would you distinguish between Zn²⁺ and Pb²⁺ ions, using ammonium hydroxide solution?

Write the observation, and balanced equation for the following reaction:
Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution.

Choose the correct answer from the options given below :
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is :

Distinguish between the following pair of compound using the test given within bracket.

Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)

Distinguish between the given pair of compounds using the test given within brackets:

A lead salt and a zinc salt (using excess ammonium hydroxide)

State two relevant observation of the following:
Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess

State two relevant observations of the following:

Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.

The equation for the burning of octane is:

\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]

What is the empirical formula of octane?

Name the Following:
Product obtained by the catalytic oxidation of ammonia.

What is the oxidizing agent in ostwald process ?

Write the balanced equation for the following:
Action of concentrated nitric acid on copper.

Write the balanced equation for the following:
Action of heat on AgNO₃

How would you separate gold from a mixture of gold and copper filling?

Write down the word equation or balanced equation for the action of concentrated nitric acid on copper.

The following statement is correct only under certain conditions. Rewrite the statement including the appropriate condition(s) and underline it in your answer.
Copper and nitric acid react together to produce nitrogen dioxide.

Choose the correct word from the given options to complete the sentence :
Sulphur can be converted to sulphuric acid using __________ nitric acid.