ICSE Class 10 Chemistry Question Paper with Answer Key 2026: PDF Download, Exam Analysis

(i) A non-metal which reacts with concentrated nitric acid to form gas which turns lime water milky is _____.

(b) Carbon

(ii) Which of the following element pairs will form an ionic bond?

(c) R (Elements of Group 2 & Group 17)

(iii) The electronic configuration of an element is 2,8,2. The hydroxide of this element can produce ____ hydroxyl ions per molecule.

(b) 2

(iv) With respect to the electrolysis of copper (II) sulphate solution using copper electrodes, which statement is correct?

(a) Copper metal is deposited at the negative electrode

(v) Identify the equation that shows the reaction of ethane with chlorine in the presence of ultraviolet light.

(c) C₂H₆ + Cl₂ → C₂H₅Cl + HCl

(vi) A hydrocarbon X undergoes the reaction under suitable conditions as shown below (referencing diagram). Which compound(s) is/are unsaturated?

(b) Y only

(vii) Rita added dilute hydrochloric acid to four metals. She recorded her observations in the table below. Which observation(s) made by Rita is/are correct?

(d) Both 2 and 4

(viii) An atom of X forms an ion according to the equation: X → X²⁺. The atomic number of the atom X is:

(c) 12

(ix) Salts can be prepared by the action of dilute acid on (1) bases (2) carbonates (3) metals (4) sulphites. The method which cannot be used for the preparation of copper salts is:

(c) 3 (Reaction with metals)

(x) The compound that has the highest melting point amongst the following is:

(b) Sodium chloride

(xi) Assertion (A): Dilute Sulphuric acid is a stronger electrolyte than concentrated Sulphuric acid. Reason (R): Dilute Sulphuric acid has a higher concentration of mobile ions.

(c) Both (A) and (R) are true and (R) is the correct explanation of (A)

(xii) What volume of carbon dioxide is produced at STP when 5 litres of propane is burnt completely according to the equation

(b) 15 litres

(xiii) An unsaturated hydrocarbon with three atoms of carbon and six atoms of hydrogen is:

(c) Propene

(xiv) Assertion (A): In the electrolysis of acidified water, the volume of hydrogen liberated is twice the volume of oxygen formed. Reason (R): Water has hydrogen and oxygen in the ratio of 1:2 by volume.

(a) (A) is true but (R) is false

(xv) In the electrolysis of molten aluminum oxide for extraction of aluminum, the following reactions take place (referencing list). The reaction that takes place at the negative electrode is:

(a) 1 (Al³⁺ + 3e⁻ → Al)

Q3

(i) (a–b)

(ii) (a–b)

(iii) (a–b)

(iv) (a–c)

To be Updated

Q4

(i) (a–b)

(ii) (a–b)

(iii) (a–c)

(iv) (a–c)

To be Updated

Q5

(i) (a–b)

(ii) (a–b)

(iii) (a–c)

(iv) (a–b 1–2)

To be Updated

Q6

(i) (a–c)

(ii) (a–c)

(iii)

To be Updated

Q7

(i) (a–b)

(ii) (a–b)

(iii) (a–c)

(iv) (a–c)

To be Updated

Q8

(i) (a–b)

(ii) (a–b)

(iii) (a–c)

(iv) (a–c)

To be Updated

1

Very Good

2

Very Good

3

Credit

4

Credit

5

Credit

6

Pass

7

Pass

8

Fail

9

Fail

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