ICSE Class 10 Chemistry Sample Paper (3). Sample papers and question papers for ICSE and ISC students. These question papers have been collected by the best teachers from ICSE and ISC schools. Students should download and practice these papers to gain better marks in examinations.
SECTION I
Question 1
(a) Chlorine is subject of the following questions:
i. What is the atomicity of chlorine?
ii. Name the compounds formed when chlorine reacts with water (formulae are NOT acceptable.)
iii. Chlorine reacts with white phosphorous forming phosphorous trichloride and phosphorous pentachloride. Write balanced equations for the formation of each of these compounds.
(b) Answer the following questions, relating your answers only to salts in the list given below:
Anhydrous calcium chloride, copper sulphate-5-water, sodium carbonate-10- water.
i. Which compound is efflorescent?
ii. Which compound is blue in colour?
iii. Which compound is deliquescent?
iv. What would be seen on mixing a solution of calcium chloride with a solution of sodium carbonate?
v. Write the balanced equation for the reaction occurring when a solution of calcium chloride is mixed with a solution of sodium carbonate.
(c) In this question you are required to supply the word (or words) that will make each sentence into correct statement which is to be written down in full.
Example : Sodium reacts with chlorine to form sodium chloride. Molten sodium reacts with chlorine to form sodium chloride
i. The electrolysis of lead bromide liberates lead and bromine.
ii. Copper sulphate crystals are dehydrated by sulphuric acid.
iii. Calcium nitrate reacts with sodium sulphate to form calcium sulphate (same is required in two places).
iv. Crystals of sulphur are obtained when a solution of sulphur in carbon disulphide is allowed to evaporate.
(d) If a crop of wheat removes 20 kg of nitrogen per hectare of soil, what mass of the fertilizer, calcium nitrate Ca(NO3)2 would be required to replace nitrogen in 10 hectare field? (N = 14, O = 16, Ca = 40), (Answer to nearest kg.)
(e)
i. A vessel contains N molecules of oxygen at a certain temperature and pressure. How many molecules of sulphur dioxide can the vessel, accommodate at the same temperature and pressure?
ii. Each of two flasks contain 2.0 g of gas at the same temperature and pressure. One flask contains oxygen and the other hydrogen.
a. Which sample contains the greater number of molecules?
b. If the hydrogen sample contains N molecules, how many molecules are present in oxygen sample?
iii. A gas sample occupies 4 litre at 27°C and P atmospheric pressure. What would be its volume at 327°C and 2P atmospheric pressure?
(f) Describe in each case one chemical test that would enable you to distinguish between the following pairs of chemicals. Describe what happens with each chemical or state no 'visible reaction'.
i. Sodium chloride solution and sodium nitrate solution.
ii. Sodium sulphate solution and sodium chloride solution.
iii. Calcium nitrate solution and zinc nitrate solution.
(g) Write balanced equations for each of the following reactions:
i. Magnesium heated in nitrogen.
ii. Action of heat on sodium nitrate.
iii. Action of heat on copper nitrate.
iv. Zinc and dilute sulphuric acid.
v. Ethene and hydrogen.
vi. Nitrogen monoxide and oxygen.
Please click below link ICSE Class 10 Chemistry Sample Paper (3).