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

A gaseous hydrocarbon contains 82.76% of carbon. Given that its vapour density is 29, find its molecular formula.
[C = 12, H = 1]

Name the following:
Two solutions that yields white precipitates, when treated with hydrogen chloride or hydrochloric acid.

Explain, why silver nitrate crystals are dissolved in distilled water and not in tap to prepare silver nitrate solution as a laboratory reagent.
Give one chemical test to distinguish between dilute hydrochloric acid and dilute sulphuric acid.

State what you see, when siIver nitrate solution is added to dilute HCl.

Hydrogen chloride dissolves in water to form an acidic solution.
Give three distinct tests (apart from using an indicator) you would carry out with this solution to illustrate the typical properties of an acid.

Write the equation for the reaction between hydrochloric acid of the following:

Lead nitrate solution

Name one lead compound that can be used to oxidize hydrogen chioride to chIorine.

What happens when dilute hydrochloric acid is added to Iead nitrate solution ?

What happens when dilute hydrochloric acid is added to Iead nitrate solution ?

State what is observed when hydrochloric acid is added to silver nitrated solution.

By the addition of only one solution, how would you distinguish between dilute hydrochloric acid and dilute nitric acid?

State one appropriate observation of the following:

A few drops of dilute hydrochloric acid are added to silver nitrate solution, followed by the addition of ammonium hydroxide solution.

State your observation when dilute hydrochloric acid is added to lead nitrate solution and the mixture is heated.

How will you distinguished between dilute HCl and dilute H₂SO₄ using lead nitrate solution?

Give two tests of the following:
Oxygen

What happens when
Lead nitrate solution treated with calcium chloride solution and products are heated and cooled.

Write sqauential observation for effect of heat on Ammonium chloride.

State the effect of adding a small amount of : (a) sodium hydroxide (b) ammonium hydroxide followed by an excess in case to samples of the salt solutions.
Lead nitrate [ small amount ________ in excess ________ ]

State two observations when
Lead nitrate crystals are heated in a hard glass test tube.

Write the balanced equation for the reaction of:

A named acid and a named alkali.