PRIYAMVADA BIRLA SR. SEC. SCHOOL, SATNA
Practice paper (2023-24)
Class – 10th
Time: 3 Hours Subject – science MaximumMarks:80
Time Allowed: 3 hours Maximum Marks: 80
General Instructions:
1. This question paper consists of 39 questions in 5 sections.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
3. Section A consists of 20 objective-type questions carrying 1 mark each.
4. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions should be in the
range of 30 to 50 words.
5. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these questions should
be in the range of 50 to 80 words.
6. Section D consists of 3 Long Answer type questions carrying 05 marks each. Answers to these questions should
be in the range of 80 to 120 words.
7. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.
Section A
1. Zinc pieces were placed in each of the four test tubes containing different salt solutions as shown below [1]
:
A colour change would be observed in solutions:
a) II and IV b) III and IV
c) II and III d) I and IV
2. Which one of the following processes involve chemical reactions? [1]
a) Keeping petrol in a china dish in the open. b) Storing of oxygen gas under pressure in a
gas cylinder.
c) Liquefaction of air. d) Heating copper wire in presence of air at
high temperature
3. Name the substance which on treatment with chlorine (Cl) yields bleaching powder. [1]
a) CaO b) Ca(OH)2
c) CuO d) CaCO3
4. Which of the following gas is used in welding and cutting metals? [1]
Page 1 of 17
, a) All of these b) Ethyne
c) Ethane d) Ethene
5. A metal is heated with dil H2SO4. The gas evolved is collected by the method shown in the figure. Answer the [1]
following questions based on it:
Name the gas evolved.
a) H2 gas b) O2 gas
c) CO gas d) CO2 gas
6. Before keeping any eatables in the jar, Riya always keeps anhydrous CaCl2 in the bottle to: [1]
a) All of these b) To absorb moisture
c) Kill germs d) To clean the bottle
7. Which of the following is the correct representation of the electron dot structure of nitrogen? [1]
a) ⋅ ⋅ b) ⋅⋅ ⋅
: N : :N : :N ⋮ N :
⋅⋅ ⋅⋅
c) :N⋮⋮N: d) : N : N :
8. The given figure is a demonstration of an experiment to show that carbon dioxide is essential for photosynthesis. [1]
What is the substance X, kept in watch-glass?
a) Sodium bicarbonate b) Sodium carbonate
c) Potassium sulphate d) Potassium hydroxide
9. In human males, all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are [1]
i. large chromosome
ii. small chromosome
iii. Y-chromosome
iv. X-chromosome
a) (iii) and (iv) b) (i) and (ii)
c) (ii) and (iv) d) (iii) only
10. Select the barrier method of contraception among the following. [1]
a) Copper-T b) Oral pill
Page 2 of 17
, c) Cervical cap d) Tubectomy
11. Alternative forms of a gene are called [1]
a) Chromosomes b) Multiples
c) Loci d) Alleles
12. How does a gaseous exchange take place in woody plants? [1]
a) Epidermal cells b) Stem hair
c) Lenticels d) Root hair
13. A toaster of 4 kW is running in an existing circuit 110 volt that has a stream ranking of 4 A. Find the stream of [1]
electrons drawn by the toaster.
a) 23.34 A b) 36.36 A
c) 14.6 A d) 9.06 A
14. In a house, two 60W electric bulbs are lighted for 4 hours and three 100W bulbs for 5 hours every day. The [1]
electric energy is consumed in 30 days:
a) 59.4 kWh b) None of these
c) 100 kWh d) 45 kWh
15. What does the given flow chart represent? [1]
a) Biomagnification b) Lindeman's law
c) Both Unidirectional energy flow and d) Unidirectional energy flow
Lindeman's law
16. Which of the following groups contain only biodegradable items? [1]
a. Grass, flowers and leather
b. Grass, wood and plastic
c. Fruit peels, cake and lime-juice
d. Cake, wood and grass
a) Groups (a), (c) and (d) b) Groups (a), (b) and (c)
c) Groups (a), (b) and (d) d) Groups (b), (c) and (d)
17. Assertion (A): To dilute sulphuric acid, acid is added to water and not water to acid. [1]
Reason (R): Specific heat of water is quite large.
a) Both A and R are true and R is the correct b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
18. Assertion (A): Multiple fission produces many daughter cells simultaneously. [1]
Reason (R): Multiple fission occurs during favourable conditions.
a) Both A and R are true and R is the correct b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
Page 3 of 17
Practice paper (2023-24)
Class – 10th
Time: 3 Hours Subject – science MaximumMarks:80
Time Allowed: 3 hours Maximum Marks: 80
General Instructions:
1. This question paper consists of 39 questions in 5 sections.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
3. Section A consists of 20 objective-type questions carrying 1 mark each.
4. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions should be in the
range of 30 to 50 words.
5. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these questions should
be in the range of 50 to 80 words.
6. Section D consists of 3 Long Answer type questions carrying 05 marks each. Answers to these questions should
be in the range of 80 to 120 words.
7. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.
Section A
1. Zinc pieces were placed in each of the four test tubes containing different salt solutions as shown below [1]
:
A colour change would be observed in solutions:
a) II and IV b) III and IV
c) II and III d) I and IV
2. Which one of the following processes involve chemical reactions? [1]
a) Keeping petrol in a china dish in the open. b) Storing of oxygen gas under pressure in a
gas cylinder.
c) Liquefaction of air. d) Heating copper wire in presence of air at
high temperature
3. Name the substance which on treatment with chlorine (Cl) yields bleaching powder. [1]
a) CaO b) Ca(OH)2
c) CuO d) CaCO3
4. Which of the following gas is used in welding and cutting metals? [1]
Page 1 of 17
, a) All of these b) Ethyne
c) Ethane d) Ethene
5. A metal is heated with dil H2SO4. The gas evolved is collected by the method shown in the figure. Answer the [1]
following questions based on it:
Name the gas evolved.
a) H2 gas b) O2 gas
c) CO gas d) CO2 gas
6. Before keeping any eatables in the jar, Riya always keeps anhydrous CaCl2 in the bottle to: [1]
a) All of these b) To absorb moisture
c) Kill germs d) To clean the bottle
7. Which of the following is the correct representation of the electron dot structure of nitrogen? [1]
a) ⋅ ⋅ b) ⋅⋅ ⋅
: N : :N : :N ⋮ N :
⋅⋅ ⋅⋅
c) :N⋮⋮N: d) : N : N :
8. The given figure is a demonstration of an experiment to show that carbon dioxide is essential for photosynthesis. [1]
What is the substance X, kept in watch-glass?
a) Sodium bicarbonate b) Sodium carbonate
c) Potassium sulphate d) Potassium hydroxide
9. In human males, all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are [1]
i. large chromosome
ii. small chromosome
iii. Y-chromosome
iv. X-chromosome
a) (iii) and (iv) b) (i) and (ii)
c) (ii) and (iv) d) (iii) only
10. Select the barrier method of contraception among the following. [1]
a) Copper-T b) Oral pill
Page 2 of 17
, c) Cervical cap d) Tubectomy
11. Alternative forms of a gene are called [1]
a) Chromosomes b) Multiples
c) Loci d) Alleles
12. How does a gaseous exchange take place in woody plants? [1]
a) Epidermal cells b) Stem hair
c) Lenticels d) Root hair
13. A toaster of 4 kW is running in an existing circuit 110 volt that has a stream ranking of 4 A. Find the stream of [1]
electrons drawn by the toaster.
a) 23.34 A b) 36.36 A
c) 14.6 A d) 9.06 A
14. In a house, two 60W electric bulbs are lighted for 4 hours and three 100W bulbs for 5 hours every day. The [1]
electric energy is consumed in 30 days:
a) 59.4 kWh b) None of these
c) 100 kWh d) 45 kWh
15. What does the given flow chart represent? [1]
a) Biomagnification b) Lindeman's law
c) Both Unidirectional energy flow and d) Unidirectional energy flow
Lindeman's law
16. Which of the following groups contain only biodegradable items? [1]
a. Grass, flowers and leather
b. Grass, wood and plastic
c. Fruit peels, cake and lime-juice
d. Cake, wood and grass
a) Groups (a), (c) and (d) b) Groups (a), (b) and (c)
c) Groups (a), (b) and (d) d) Groups (b), (c) and (d)
17. Assertion (A): To dilute sulphuric acid, acid is added to water and not water to acid. [1]
Reason (R): Specific heat of water is quite large.
a) Both A and R are true and R is the correct b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
18. Assertion (A): Multiple fission produces many daughter cells simultaneously. [1]
Reason (R): Multiple fission occurs during favourable conditions.
a) Both A and R are true and R is the correct b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
Page 3 of 17
