Students can refer to the following Sample Paper ICSE Class 10 Chemistry Set D with Answers provided below based on the latest syllabus and examination guidelines issued for ICSE Chemistry. All specimen papers have been prepared covering all chapters given in ICSE Chemistry book for Class 10. You should also refer to ICSE Class 10 Chemistry Solutions.
Sample Paper ICSE Class 10 Chemistry Set D with Answers
Exam. : …………………..
Class : …………………….
Subject : ……………………………
Marks : ……… Time
• Answers to this paper must be written on the paper provided separately.
• You will not be allowed to write during the first 15 minutes.
• This time is to spent in reading the question paper.
• The times given at the head of this paper is the time allowed for writing the answers.
• Section–I is compulsory. Attempt any four questions from Section-II.
• The intended marks for this question or parts of questions are given in the brackets ( ).
Section – I (40 Marks)
(Attempt all questions from this section)
Q1. (a) Choose the correct answer from the options given below:
(i) The inert electrode used in the electrolysis of acidified water is:
(A) Nickel
(B) Platinum
(C) Copper
(D) Silver
(ii) The organic compound having a triple carbon-carbon covalent bond, is:
(A) C3H4
(B) C3H6
(C) C3H8
(D) C4H10
(iii) Chalky white precipitate soluble in sodium hydroxide is of:
(A) Ferrous hydroxide
(B) Lead hydroxide
(C) Silver nitrate
(D) Silver hydroxide
(iv) The oxides and hydroxides of which metal are amphoteric:
(A) Iron
(B) Sodium
(C) Aluminium
(D) Magnesium
(v) In the given equation, identify the role played by concentrated sulphuric acid:
S + 2H2SO4 3SO2 + 2H2O
(A) Nonvolatile acid
(B) Oxidising agent
(C) Dehydrating agent
(D) None of these
(b) State one relevant observation for each of the following reactions:
(i) Zinc carbonate is heated strongly.
(ii) Sulphide ore is added to a tank containing oil and water and then stirred or agitated with air.
(iii) Ammonia gas is passed over heated copper (II) oxide.
(iv) Sodium hydroxide solution is added to copper sulphate solution first a little and then in excess?
(v) At the anode, when molten Lead bromide is electrolysed using graphite electrodes.
(c) (i) Molecular formula of a compound is C6H12O3. Find its empirical formula.
(ii) Calculate the empirical formula of the compound having 37.6% of sodium, 23.1% of silicon and 39.3% of oxygen.
(where atomic mass of Na=23, Si=28, O=16)
(d) Fill in the blanks with the choices given in brackets:
(i) When sodium chloride is heated with concentrated o sulphuric acid below 200 C, one of the product formed is …………………. (sodium hydrogen sulphate / chlorine / sodium sulphate)
(ii) In period 3, the most metallic element is ………. (Sodium/Magnesium/Aluminium)
(iii) Dry hydrogen chloride gas can be collected by …………………. Displacement of air. (downward / upward)
(iv) Electrolysis of aqueous sodium chloride solution will form …………………. at the cathode. (Hydrogen gas / Chlorine gas / Sodium metal)
(v) The polar covalent compound in gaseous state that does not conduct electricity is …………………. (ammonia carbon tetrachloride, methane)
(e) Give one word or phrase for the following statements:
(i) Electrode used as cathode in electro refining of impure copper.
(ii) The tendency of an atom to attract electrons to itself when combined in a compound.
(iii) Process of formation of ions from molecules which are not in ionic stale.
(iv) The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion.
(v) The process of converting ammonia into Nitric acid industrially.
(f) (i) Draw the structural formula for each of the following:
(1) Propan-1-al
(2) Ethyne
(3) Ethanoic acid
(ii) Write the IUPAC name for the following compounds:
(g) Write a balanced chemical equation for each of the following:
(i) Reaction of carbon powder and concentrated nitric acid.
(ii) Reaction of excess of ammonia with chlorine.
(iii) Reaction of lead nitrate solution with ammonium hydroxide.
(iv) Complete combustion of ethane.
(v) Addition of chlorine to ethene in the presence of Carbon tetrachloride.
(h) (i) Give a reason for each of the following:
- Hydrogen Chloride gas fumes in moist air.
- Graphite anode is preferred in the electrolysis of molten lead bromide.
(ii) Identify the substance underlined in each of the following cases: - The electrolyte used for electroplating an article with silver.
- An organic compound containing –COOH functional group.
- Acid used as a drying agent as well as dehydrating agent.
Section – II
(Attempt any four questions)
Q5. (a) Study the flow chart given and give balanced equations to represent the reactions A, B and C:
(b) Name the gas evolved in each of the following cases:
(i) Alumina undergoes electrolytic reduction
(ii) Ethene undergoes hydrogenation reaction
(iii) Sodium chloride reacts with concentrated sulphuric acid.
(c) Find the empirical formula and the molecular formula of an organic compound from the data given below:
C = 75.92% , H = 6.32% and N = 17.76%
The vapour density of the compound is 39.5 [ C=12, H=1, N=14]
Q6. (a) Answer the following questions for the preparation of hydrochloric acid in laboratory:
(i) Why is direct absorption of hydrogen chloride gas in water not feasible?
(ii) What arrangement is done to dissolve hydrogen chloride gas in water?
(iii) Name an aqueous solution which give white precipitate with dilute hydrochloric acid.
(b) State your observation for the following case:
(i) Ammonia is burnt in an atmosphere of oxygen in the absence of a catalyst.
(ii) Glass rod dipped in ammonium hydroxide is brought near the mouth of the concentrated hydrochloric acid bottle.
(iii) Dilute sulphuric acid reacts with Iron (II) sulphide.
(iv) Concentrated sulphuric acid is added to sugar crystals?
(c) Write the equation for the following reactions:
(i) Dilute sulphuric acid and Barium chloride
(ii) Dilute sulphuric acid and Sodium sulphide
(iii) Dilute sulphuric acid with Iron
Q7. (a) Answer following questions:
(i) What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid?
(ii) Why should the temperature of the reaction mixture o of nitric acid not allowed to rise above 200 C.
(b) State two relevant observations for each of the following:
(i) Ammonium hydroxide solution is added to copper(II) nitrate solution in small quantities and then in excess.
(ii) Ammonium hydroxide solution is added to Zinc nitrate solution in minimum quantities and then in excess.
(iii) Sodium hydroxide solution is added to Ferric Chloride solution at first a little and then in excess.
(c) Mr. George wants to electroplate his key chain with nickel to prevent rusting. For this electroplating:
(i) Name the electrolyte
(ii) Name the cathode
(iii) Name the anode
(iv) Give the reaction at the cathode
(v) Give the reaction at the anode