Class 10 Science: CBSE (Official) Sample Question Paper (2022-23)

 Page 1


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 
1 
The change in colour of the moist litmus paper in the given set up is due to  
 
 
 
 
 
 
 
 
 
 
 
 
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. 
1 
2 
In the redox reaction  
MnO
2
 + 4HCl ? MnCl
2
 + 2H
2
O + Cl
2
 
(a) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to H
2
O 
(b) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to Cl
2
 
1 
 
Page 2


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 
1 
The change in colour of the moist litmus paper in the given set up is due to  
 
 
 
 
 
 
 
 
 
 
 
 
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. 
1 
2 
In the redox reaction  
MnO
2
 + 4HCl ? MnCl
2
 + 2H
2
O + Cl
2
 
(a) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to H
2
O 
(b) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to Cl
2
 
1 
 
(c) MnO
2 
is oxidized to MnCl
2 
& HCl is reduced to Cl
2
 
(d) MnO
2
 is oxidized to MnCl
2 
& HCl is reduced to H
2
O 
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 CO
2
,CO, Cl
2 
and O
2
, which one of the options in the 
table is correct? 
Option Acidic 
oxide 
Used in 
treatment of 
water 
Product of 
respiration 
Product of 
incomplete 
combustion 
(a) CO Cl
2
 O
2
 CO 
(b) CO
2
 Cl
2
 CO
2
 CO 
(c) CO
2
 O
2
 O
2
 CO
2
 
(d) CO O
2
 CO
2
 CO
2
 
 
1 
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 
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. 
1 
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 
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 
1 
7  
The formulae of four organic compounds are shown below. Choose the correct option  
 
 
 
 
 
 
1 
 
Page 3


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 
1 
The change in colour of the moist litmus paper in the given set up is due to  
 
 
 
 
 
 
 
 
 
 
 
 
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. 
1 
2 
In the redox reaction  
MnO
2
 + 4HCl ? MnCl
2
 + 2H
2
O + Cl
2
 
(a) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to H
2
O 
(b) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to Cl
2
 
1 
 
(c) MnO
2 
is oxidized to MnCl
2 
& HCl is reduced to Cl
2
 
(d) MnO
2
 is oxidized to MnCl
2 
& HCl is reduced to H
2
O 
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 CO
2
,CO, Cl
2 
and O
2
, which one of the options in the 
table is correct? 
Option Acidic 
oxide 
Used in 
treatment of 
water 
Product of 
respiration 
Product of 
incomplete 
combustion 
(a) CO Cl
2
 O
2
 CO 
(b) CO
2
 Cl
2
 CO
2
 CO 
(c) CO
2
 O
2
 O
2
 CO
2
 
(d) CO O
2
 CO
2
 CO
2
 
 
1 
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 
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. 
1 
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 
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 
1 
7  
The formulae of four organic compounds are shown below. Choose the correct option  
 
 
 
 
 
 
1 
 
 
(a) A and B are unsaturated hydrocarbons 
(b) C and D are saturated hydrocarbons 
(c) Addition of hydrogen in presence of catalyst changes A to C 
(d) Addition of potassium permanganate changes B to D  
8 
In the given transverse section of the leaf identify the layer of cells where maximum 
photosynthesis occurs. 
 
 
 
 
 
 
 
 
 
 
 
 
(a)  I, II 
(b) II, III 
(c) III, IV 
(d) I, IV 
1 
9 Observe the experimental setup shown below. Name the chemical indicated as ‘X’ that 
can absorb the gas which is evolved as a byproduct of respiration. 
 
 
 
 
 
(a)  NaOH 
(b)  KOH 
(c)  Ca (OH)
2
 
(d) K
2
CO
3
 
1 
10 If a tall pea plant is crossed with a pure dwarf pea plant then, what percentage of F1 and 
F2 generation respectively will be tall? 
(a) 25%, 25% 
(b) 50%, 50% 
(c) 75%,100% 
(d) 100%, 75% 
1 
11  Observe the three figures given below. Which of the following depicts tropic movements 
appropriately? 
1 
 
 
Page 4


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 
1 
The change in colour of the moist litmus paper in the given set up is due to  
 
 
 
 
 
 
 
 
 
 
 
 
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. 
1 
2 
In the redox reaction  
MnO
2
 + 4HCl ? MnCl
2
 + 2H
2
O + Cl
2
 
(a) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to H
2
O 
(b) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to Cl
2
 
1 
 
(c) MnO
2 
is oxidized to MnCl
2 
& HCl is reduced to Cl
2
 
(d) MnO
2
 is oxidized to MnCl
2 
& HCl is reduced to H
2
O 
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 CO
2
,CO, Cl
2 
and O
2
, which one of the options in the 
table is correct? 
Option Acidic 
oxide 
Used in 
treatment of 
water 
Product of 
respiration 
Product of 
incomplete 
combustion 
(a) CO Cl
2
 O
2
 CO 
(b) CO
2
 Cl
2
 CO
2
 CO 
(c) CO
2
 O
2
 O
2
 CO
2
 
(d) CO O
2
 CO
2
 CO
2
 
 
1 
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 
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. 
1 
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 
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 
1 
7  
The formulae of four organic compounds are shown below. Choose the correct option  
 
 
 
 
 
 
1 
 
 
(a) A and B are unsaturated hydrocarbons 
(b) C and D are saturated hydrocarbons 
(c) Addition of hydrogen in presence of catalyst changes A to C 
(d) Addition of potassium permanganate changes B to D  
8 
In the given transverse section of the leaf identify the layer of cells where maximum 
photosynthesis occurs. 
 
 
 
 
 
 
 
 
 
 
 
 
(a)  I, II 
(b) II, III 
(c) III, IV 
(d) I, IV 
1 
9 Observe the experimental setup shown below. Name the chemical indicated as ‘X’ that 
can absorb the gas which is evolved as a byproduct of respiration. 
 
 
 
 
 
(a)  NaOH 
(b)  KOH 
(c)  Ca (OH)
2
 
(d) K
2
CO
3
 
1 
10 If a tall pea plant is crossed with a pure dwarf pea plant then, what percentage of F1 and 
F2 generation respectively will be tall? 
(a) 25%, 25% 
(b) 50%, 50% 
(c) 75%,100% 
(d) 100%, 75% 
1 
11  Observe the three figures given below. Which of the following depicts tropic movements 
appropriately? 
1 
 
 
 
 
 
 
 
 
(a) B and C 
(b) A and C 
(c) B only 
(d) C only  
12  
The diagram shown below depicts pollination. Choose the options that will show a 
maximum variation in the offspring.  
 
 
 
 
 
 
 
 
 
 
(a) A, B and C 
(b) B and D 
(c) B, C and D 
(d) A and C  
1 
13 A complete circuit is left on for several minutes, causing the connecting copper wire to 
become hot. As the temperature of the wire increases, the electrical resistance of the wire 
(a) decreases. 
(b) remains the same. 
(c) increases. 
(d) increases for some time and then decreases . 
1 
14  A copper wire is held between the poles of a magnet. 
 
 
 
 
 
 
 
 
 
 
 
1 
 
 
 
Page 5


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 
1 
The change in colour of the moist litmus paper in the given set up is due to  
 
 
 
 
 
 
 
 
 
 
 
 
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. 
1 
2 
In the redox reaction  
MnO
2
 + 4HCl ? MnCl
2
 + 2H
2
O + Cl
2
 
(a) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to H
2
O 
(b) MnO
2 
is reduced to MnCl
2
& HCl is oxidized to Cl
2
 
1 
 
(c) MnO
2 
is oxidized to MnCl
2 
& HCl is reduced to Cl
2
 
(d) MnO
2
 is oxidized to MnCl
2 
& HCl is reduced to H
2
O 
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 CO
2
,CO, Cl
2 
and O
2
, which one of the options in the 
table is correct? 
Option Acidic 
oxide 
Used in 
treatment of 
water 
Product of 
respiration 
Product of 
incomplete 
combustion 
(a) CO Cl
2
 O
2
 CO 
(b) CO
2
 Cl
2
 CO
2
 CO 
(c) CO
2
 O
2
 O
2
 CO
2
 
(d) CO O
2
 CO
2
 CO
2
 
 
1 
5 On placing a copper coin in a test tube containing green ferrous sulphate solution, it will 
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. 
1 
6 Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper 
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 
1 
7  
The formulae of four organic compounds are shown below. Choose the correct option  
 
 
 
 
 
 
1 
 
 
(a) A and B are unsaturated hydrocarbons 
(b) C and D are saturated hydrocarbons 
(c) Addition of hydrogen in presence of catalyst changes A to C 
(d) Addition of potassium permanganate changes B to D  
8 
In the given transverse section of the leaf identify the layer of cells where maximum 
photosynthesis occurs. 
 
 
 
 
 
 
 
 
 
 
 
 
(a)  I, II 
(b) II, III 
(c) III, IV 
(d) I, IV 
1 
9 Observe the experimental setup shown below. Name the chemical indicated as ‘X’ that 
can absorb the gas which is evolved as a byproduct of respiration. 
 
 
 
 
 
(a)  NaOH 
(b)  KOH 
(c)  Ca (OH)
2
 
(d) K
2
CO
3
 
1 
10 If a tall pea plant is crossed with a pure dwarf pea plant then, what percentage of F1 and 
F2 generation respectively will be tall? 
(a) 25%, 25% 
(b) 50%, 50% 
(c) 75%,100% 
(d) 100%, 75% 
1 
11  Observe the three figures given below. Which of the following depicts tropic movements 
appropriately? 
1 
 
 
 
 
 
 
 
 
(a) B and C 
(b) A and C 
(c) B only 
(d) C only  
12  
The diagram shown below depicts pollination. Choose the options that will show a 
maximum variation in the offspring.  
 
 
 
 
 
 
 
 
 
 
(a) A, B and C 
(b) B and D 
(c) B, C and D 
(d) A and C  
1 
13 A complete circuit is left on for several minutes, causing the connecting copper wire to 
become hot. As the temperature of the wire increases, the electrical resistance of the wire 
(a) decreases. 
(b) remains the same. 
(c) increases. 
(d) increases for some time and then decreases . 
1 
14  A copper wire is held between the poles of a magnet. 
 
 
 
 
 
 
 
 
 
 
 
1 
 
 
 
The current in the wire can be reversed. The pole of the magnet can also be changed 
over. In how many of the four directions shown can the force act on the wire? 
(a) 1 
(b) 2 
(c) 3 
(d) 4 
15  
 
Plastic insulation surrounds a wire having diameter d and length l as shown above. A 
decrease in the resistance of the wire would be produced by an increase in the 
(a) length l of the wire 
(b) diameter d of the wire 
(c) temperature of the wire 
(d) thickness of the plastic insulation 
1 
16 Which of the following pattern correctly describes the magnetic field around a long 
straight wire carrying current? 
(a) straight lines perpendicular to the wire. 
(b) straight lines parallel to the wire. 
(c) radial lines originating from the wire. 
(d) concentric circles centred around the wire.  
1 
Q. no 17 to 20 are Assertion - Reasoning based questions. 
These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the 
appropriate option given below: 
(a) Both A and R are true and R is the correct explanation of A 
(b) Both A and R are true and R is not the correct explanation of A 
(c)  A is true but R is false  
(d) A is False but R is true 
17 Assertion: Silver bromide decomposition is used in black and white photography. 
Reason: Light provides energy for this exothermic reaction. 
1 
18 Assertion: Height in pea plants is controlled by efficiency of enzymes and is thus 
genetically controlled. 
Reason: Cellular DNA is the information source for making proteins in the cell. 
1 
19 Assertion: Amphibians can tolerate mixing of oxygenated and deoxygenated blood. 
Reason: Amphibians are animals with two chambered heart 
1 
20 Assertion: On freely suspending a current – carrying solenoid, it comes to rest in 
Geographical N-S direction. 
Reason : One end of current carrying straight solenoid behaves as a North pole and 
the other end as a South pole, just like a bar magnet. 
1