Science (086)
Class X
Sample Question Paper 2022-23
Max. Marks: 80 Time Allowed: 3 hours
General Instructions:
i. This question paper consists of 39 questions in 5 sections.
ii. All questions are compulsory. However, an internal choice is provided in some questions. A student is
expected to attempt only one of these questions.
iii. Section A consists of 20 objective type questions carrying 1 mark each.
iv. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions
should in the range of 30 to 50 words.
v. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these
questions should in the range of 50 to 80 words
vi. Section D consists of 3 Long Answer type questions carrying 05 marks each. Answer to these
questions should be in the range of 80 to 120 words.
vii. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.
SECTION - A
Select and write one most appropriate option out of the four options given for each of the questions 1 – 20
Q. No Questions Marks
The change in colour of the moist litmus paper in the given set up is due to 1
1
i. presence of acid
ii. presence of base
iii. presence of H⁺(aq) in the solution
iv. presence of Litmus which acts as an indicator
(a) i and ii
(b) Only ii
(c) Only iii
(d) Only iv.
In the redox reaction 1
2
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
(a) MnO2 is reduced to MnCl2& HCl is oxidized to H2O
(b) MnO2 is reduced to MnCl2& HCl is oxidized to Cl2
, (c) MnO2 is oxidized to MnCl2 & HCl is reduced to Cl2
(d) MnO2 is oxidized to MnCl2 & HCl is reduced to H2O
1
3
Which of the following is the correct observation of the reaction shown in the above set
up?
(a) Brown powder of Magnesium oxide is formed.
(b) Colourless gas which turns lime water milky is evolved.
(c) Magnesium ribbon burns with brilliant white light.
(d) Reddish brown gas with a smell of burning Sulphur has evolved.
1
4 With the reference to four gases CO2,CO, Cl2 and O2, which one of the options in the
table is correct?
Option Acidic Used in Product of Product of
oxide treatment of respiration incomplete
water combustion
(a) CO Cl2 O2 CO
(b) CO2 Cl2 CO2 CO
(c) CO2 O2 O2 CO2
(d) CO O2 CO2 CO2
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 1
be observed that the ferrous sulphate solution
(a) turns blue, and a grey substance is deposited on the copper coin.
(b) turns colourless and a grey substance is deposited on the copper coin.
(c) turns colourless and a reddish–brown substance is deposited on the copper coin.
(d) remains green with no change in the copper coin.
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 1
and compared the colors. Which of the following is the correct conclusion?
(a) pH of acetic acid is more than that of hydrochloric acid.
(b) pH of acetic acid is less than that of hydrochloric acid.
(c) Acetic acid dissociates completely in aqueous solution.
(d) Acetic acid is a strong acid
7 1
The formulae of four organic compounds are shown below. Choose the correct option
Class X
Sample Question Paper 2022-23
Max. Marks: 80 Time Allowed: 3 hours
General Instructions:
i. This question paper consists of 39 questions in 5 sections.
ii. All questions are compulsory. However, an internal choice is provided in some questions. A student is
expected to attempt only one of these questions.
iii. Section A consists of 20 objective type questions carrying 1 mark each.
iv. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions
should in the range of 30 to 50 words.
v. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these
questions should in the range of 50 to 80 words
vi. Section D consists of 3 Long Answer type questions carrying 05 marks each. Answer to these
questions should be in the range of 80 to 120 words.
vii. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.
SECTION - A
Select and write one most appropriate option out of the four options given for each of the questions 1 – 20
Q. No Questions Marks
The change in colour of the moist litmus paper in the given set up is due to 1
1
i. presence of acid
ii. presence of base
iii. presence of H⁺(aq) in the solution
iv. presence of Litmus which acts as an indicator
(a) i and ii
(b) Only ii
(c) Only iii
(d) Only iv.
In the redox reaction 1
2
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
(a) MnO2 is reduced to MnCl2& HCl is oxidized to H2O
(b) MnO2 is reduced to MnCl2& HCl is oxidized to Cl2
, (c) MnO2 is oxidized to MnCl2 & HCl is reduced to Cl2
(d) MnO2 is oxidized to MnCl2 & HCl is reduced to H2O
1
3
Which of the following is the correct observation of the reaction shown in the above set
up?
(a) Brown powder of Magnesium oxide is formed.
(b) Colourless gas which turns lime water milky is evolved.
(c) Magnesium ribbon burns with brilliant white light.
(d) Reddish brown gas with a smell of burning Sulphur has evolved.
1
4 With the reference to four gases CO2,CO, Cl2 and O2, which one of the options in the
table is correct?
Option Acidic Used in Product of Product of
oxide treatment of respiration incomplete
water combustion
(a) CO Cl2 O2 CO
(b) CO2 Cl2 CO2 CO
(c) CO2 O2 O2 CO2
(d) CO O2 CO2 CO2
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 1
be observed that the ferrous sulphate solution
(a) turns blue, and a grey substance is deposited on the copper coin.
(b) turns colourless and a grey substance is deposited on the copper coin.
(c) turns colourless and a reddish–brown substance is deposited on the copper coin.
(d) remains green with no change in the copper coin.
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 1
and compared the colors. Which of the following is the correct conclusion?
(a) pH of acetic acid is more than that of hydrochloric acid.
(b) pH of acetic acid is less than that of hydrochloric acid.
(c) Acetic acid dissociates completely in aqueous solution.
(d) Acetic acid is a strong acid
7 1
The formulae of four organic compounds are shown below. Choose the correct option
