Practice Questions CBSE - Science Class 10 (2023 Boards)

Question 1

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Question 2

down arrow in sibling posts in Teachoo

Question 3 Important

down arrow in sibling posts in Teachoo

Question 4 Important

down arrow in sibling posts in Teachoo

Question 5 Important

down arrow in sibling posts in Teachoo

Question 6

down arrow in sibling posts in Teachoo

Question 7 Important

down arrow in sibling posts in Teachoo

Question 8

down arrow in sibling posts in Teachoo

Question 9 Important

down arrow in sibling posts in Teachoo

Question 10

down arrow in sibling posts in Teachoo

Question 11

down arrow in sibling posts in Teachoo

Question 12 Important

down arrow in sibling posts in Teachoo

Question 13 Important

down arrow in sibling posts in Teachoo

Question 14

down arrow in sibling posts in Teachoo

Question 15 Important

down arrow in sibling posts in Teachoo

Question 16

down arrow in sibling posts in Teachoo

Question 17 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 18 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 19 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 20 [Assertion Reasoning]

down arrow in sibling posts in Teachoo

Question 21 (Choice 1) Important

down arrow in sibling posts in Teachoo

Question 21 (Choice 2)

down arrow in sibling posts in Teachoo

Question 22 Important

down arrow in sibling posts in Teachoo

Question 23

down arrow in sibling posts in Teachoo

Question 24 Important

down arrow in sibling posts in Teachoo

Question 25 (Choice 1)

down arrow in sibling posts in Teachoo

Question 25 (Choice 2)

down arrow in sibling posts in Teachoo

Question 26 Important

down arrow in sibling posts in Teachoo

Question 27

down arrow in sibling posts in Teachoo

Question 28 Important

down arrow in sibling posts in Teachoo

Question 29 (Choice 1)

down arrow in sibling posts in Teachoo

Question 29 (Choice 2) Important

down arrow in sibling posts in Teachoo

Question 30 Important

down arrow in sibling posts in Teachoo

Question 31 (a)

down arrow in sibling posts in Teachoo

Question 31 (b) Important

down arrow in sibling posts in Teachoo

Question 32 (Choice 1)

down arrow in sibling posts in Teachoo

Question 32 (Choice 2) Important

down arrow in sibling posts in Teachoo

Question 33 (a)

down arrow in sibling posts in Teachoo

Question 33 (b)

down arrow in sibling posts in Teachoo

Question 33 (c) Important

down arrow in sibling posts in Teachoo

Question 34 (a) - Choice 1

down arrow in sibling posts in Teachoo

Question 34 (b) - Choice 1 Important

down arrow in sibling posts in Teachoo

Question 34 (c) - Choice 1

down arrow in sibling posts in Teachoo

Question 34 (a) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 34 (b) - Choice 2]

down arrow in sibling posts in Teachoo

Question 34 (c) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 35 (a) - Choice 1 Important

down arrow in sibling posts in Teachoo

Question 35 (b) - Choice 1 Important left arrow to signify that you are on this page You are here

down arrow in sibling posts in Teachoo

Question 35 (c) - Choice 1

down arrow in sibling posts in Teachoo

Question 35 (a) - Choice 2

down arrow in sibling posts in Teachoo

Question 35 (b) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 35 (c) - Choice 2

down arrow in sibling posts in Teachoo

Question 36 Important

down arrow in sibling posts in Teachoo

Question 37 (a) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 37 (b) i - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 37 (b) ii - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 38 (a) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 38 (b) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 38 (c) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (a) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 39 (b) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (c) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (d) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 39 (d) - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

(b) Explain an instance where reproduction would be counterproductive to the sustenance of species.

 

Answer:

(b)

  • A higher rate of reproduction would lead to unchecked population growth .
  • This is bad because it leads to competition for resources .
  • Since the natural resources available to the population remain more or less the same , it leads to subsequent lower standards of living .

For example, unchecked population growth in humans has led to many problems.

 

 

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo