Sample Paper ICSE Class 10 Chemistry Set C

Sample Papers

Students can refer to the following Sample Paper ICSE Class 10 Chemistry Set C 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 C with Answers


Sample Paper ICSE Class 10 Chemistry Set C
(Answer all questions from this section)

(A) With Four parts (a) (i) – (a) (x), select the correct answer from the choices A, B, C,
D which are given. [10×1] = 10

(i) With reference to the variation of properties in the periodic table, which of the following is generally true?
A. Atomic size inceases from left to right across a period.
B. Ionization potential inceases from left to right across a period.
C. Electron affinity increases going down a group.
D. Electronegativity increases going down a group.

(ii) Which of the following is not a common characteristic of an electrovalent compound?
A. High melting point
B. Conducts electricity when molten
C. Consists of oppositely charged ions
D. Ionizes when dissolved in water

(iii) Dilute sulphuric acid will produce a white precipitate when added to a solution of:
A. Copper nitrate
B. Zinc nitrate
C. Lead nitrate
D. Sodium nitrate

(iv) The salt which in solution gives a pale green precipitate with sodium hydroxide solution & a white precipitate with barium chloride solution is :
A. Iron(III) sulphate
B. Iron(II) sulphate
C. Iron(II) chloride
D. Iron(III) chloride

(v) During the electrolysis of molten lead bromide, which of the following takes place?
A. Bromine is released at the cathode
B. Lead is deposited at the anode
C. Bromine ions gain electrons
D. Lead is desposited at the cathode

(vi) Brass is an alloy of :
A. Copper & Tin
B. Copper & Zinc
C. Zinc & Lead
D. Lead & Tin

(vii) Ammonia can be obtained by adding water to:
A. Amonium Chloride
B. Ammonium nitrite
C. Magnesium nitride
D. Magnesium nitrate

(viii) Hydrogen chloride can be obtained by adding concentrated Sulphuric acid to:
A. NaCl
B. Na2SO4
C. Na2CO3
D. NaNO3

(ix) The formation of 1,2 dibromoethane from ethene & bromine is an example of :
A. Substitution
B. Dehydration
C. Dehydrohalogenation
D. Addition

(x)Select the acid which contains four hydrogen atoms in it :
A. Formic acid
B. Sulphuric acid
C. Nitric acid
D. Acetic acid

B) Study the diagram given below which shows the electrolysis of acidified water and answer the questions that follow:

(i) Why is water acidulated? [1]
(ii) Give the cell reactions in the form of ionic equations taking place at anode and cathode. [2]
(iii) Why is sulphate ion not discharged at anode? [1]
(iv) How many volumes of hydrogen and oxygen are liberated at their respective electrodes? [1]

C) (i) Draw the structural formula of the following: [3×1]=3
(i) 2,3-Dimethylbutane
(ii) 3-Methylbut-1-yne
(iii) Propan-2-ol

(ii) Give the IUPAC names and functional groups of each of the following: [2×1]=2
(1) CH3-CH2-CHO
(2) H3C-CH2-CH2-OH

(D) State one relevant observation for each of the following: [5×1]=5
(i) Ammonium hydroxide solution is added to copper sulphate in excess.
(ii) Bromine vapours are passed into a solution of ethyne in carbon tetrachloride.
(iii ) Excess NaOH is added to calcium nitrate solution.
(iv) When ammonia gas is burnt in an atmosphere of excess oxygen.
(v) Hydrochloric Acid is added to silver nitrate solution.

(e) Find the odd one out & explain your choice (Note: Valency is not a criterion) [5×1]=5
(i) Al(OH)3 , Pb(OH)2 , Mg(OH)2 , Zn(OH)2
(ii) C3H8 , C5H10 , C2H6 , CH4
(iii) Sulphur, Phosphorus, Carbon, Iodine
(iv) Copper, Lead, Zinc, Mercury
(v) Formic acid, Nitric acid, Acetic acid, Propanoic acid

(f) What are the terms defined in (f) (i) – (v) bellow? [5×1]=5
(i) A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
(ii) A bond formed by a shared pair of electrons with both electrons coming from the same atom.
(iii) A salt formed by incomplete neutralization of an acid by a base.
(iv) A base which is soluble in water.
(v) A reaction in which the hydrogen of an alkane is replaced by another element like chlorine.

(g) Give balanced equations for each of the following reactions: [5×1]=5
(i) Ammonia and oxygen in presence of platinum at 8000c
(ii) Sodium sulphite with dilute HCl
(iii) Zinc hydroxide with dilute H2SO4
(iv) Methane with oxygen.
(v) Reduction of hot copper
(II) oxide to copper using ammonia.

Sample Paper ICSE Class 10 Chemistry Set C
SECTION –B [40 Marks]
(Answer any four questions from this section)
(Attempt any four questions)

Question 2
Copy & complete the following table relating to important industrial processes. Output refers to the product of the process not the intermediate steps.

Question 3
(a) The following questions refer to the periodic Table. [5]
(i) Name the first & last element in Period 2.
(ii) What happens to the atomic size of elements moving from top to bottom of a group?
(iii) Which of the elements has the greatest electron affinity among the halogens?
(iv) What is the common feature of the electronic configurations of the elements in group 17?

(b)Supply the missing word from those in the brackets: [2]
(i) If an element has a low ionization energy then it is likely to be __
(metallic / non – metallic ).

(ii) If an element has seven electrons in its outermost shell then it is likely to have the __ (largest / smallest) atomic size among all the elements in the same period.
(i) The metals of Group 2 from top to bottom are: Be, Mg , Ca ,Sr ,Ba .Which of these metals will form ions most readily & why ?
(ii) What Property of an element is measured by electronegativity? [3]

Question 4
(a) Distinguish between the saturated hydrocarbon ethane & the unsaturated hydrocarbon ethene by drawing their structural formulae. [2]
(b) Give the electron dot structure of the following: [2×1]=2
(1) NH3 (2) CH4

(c) Compound A is bubbled through bromine dissolved in carbon tetrachloride & the product is CH2Br – CH2Br.

(i) Draw the structural formula of A.
(ii) What type of reaction has A undergone?
(iii) What is your observation?

(d) An organic compound with vapour density =94 contains C=12.67%, H=2.13% and Br = 85.11%.Find the molecular formula. [Atomic mass: C=12, H=1,Br=80] [3]

Question 5
(a) Answer the following questions, which are relevant to the extraction of aluminium:
(i) State the reason for addition of caustic alkali to bauxite ore during purification of bauxite. [1]
(ii) Give a balanced chemical equation for the above reaction. [1]
(iii) Along with cryolite & alumina,another substance is added to the electrolytic mixture.Name the substance & give one reason for the addition.

(b) Sodium hydroxide solution is added to the solutions containing the ions mentioned in List X .List Y gives the details of the precipitate. Match the ions with their coloured precipitates.

Question 6
(a) Answer the following questions: [5×1]=5

(i) What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride & nitric acid?
(ii) What property of hydrogen chloride is demonstrated when it is collected by downward delivery?
(iii) Why is hydrogen chloride not collected over water?
(iv) What is the property of nitric acid which allows it to react with copper?
(v) What property of concentrated sulphuric acid is in action when sugar turns black in its presence?

(b)Write the equations for the following reactions: [5]

(i) Dilute nitric acid & copper.
(ii) Dilute sulphuric acid & barium chloride.
(iii) Dilute hydrochloric acid & sodium thiosulphate.
(iv) Dilute hydrochloric acid & lead nitrate solution.
(v) Dilute sulphuric acid & sodium sulphide.

Question 7
(a) Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reactions (i) to (v). Some properties may be repeted : [5]

B.Dehydrating agent
C.Non – volatile acid
D.Oxidizing agent

(i) C12H22O11 + n H2SO4 → 12C + 11H2 + nH2SO4
(ii) S + H2SO4 → 3SO2 + 2H2O
(iii) NaCl + H2SO4 → NaHSO4 + HCl
(iv) CuO + H2SO4 → CuSO4 + H2O
(v) Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2

(b) Complete the following table:

(C) Define each of the following terms:
(1) Ionization potential [1]
(2) Electron affinity