Practice Questions CBSE - Science Class 10 (2023 Boards)

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Question 2

Question 3 Important

Question 4 Important

Question 5 Important

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Question 9 Important

Question 10

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Question 12 Important

Question 13 Important

Question 14

Question 15 Important

Question 16

Question 17 [Assertion Reasoning] Important

Question 18 [Assertion Reasoning] Important

Question 19 [Assertion Reasoning] Important

Question 20 [Assertion Reasoning]

Question 21 (Choice 1) Important

Question 21 (Choice 2)

Question 22 Important

Question 23

Question 24 Important

Question 25 (Choice 1)

Question 25 (Choice 2)

Question 26 Important

Question 27

Question 28 Important

Question 29 (Choice 1) You are here

Question 29 (Choice 2) Important

Question 30 Important

Question 31 (a)

Question 31 (b) Important

Question 32 (Choice 1)

Question 32 (Choice 2) Important

Question 33 (a)

Question 33 (b)

Question 33 (c) Important

Question 34 (a) - Choice 1

Question 34 (b) - Choice 1 Important

Question 34 (c) - Choice 1

Question 34 (a) - Choice 2 Important

Question 34 (b) - Choice 2]

Question 34 (c) - Choice 2 Important

Question 35 (a) - Choice 1 Important

Question 35 (b) - Choice 1 Important

Question 35 (c) - Choice 1

Question 35 (a) - Choice 2

Question 35 (b) - Choice 2 Important

Question 35 (c) - Choice 2

Question 36 Important

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

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

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

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

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

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

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

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

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

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

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

Given below is a table representing the characteristics of two fluids involved in the transportation of substances in the human body.

Fluid A Fluid B
colourless coloured
contains less oxygen contains more oxygen
contains less protein contains more protein

(a) Identify fluid A and fluid B.

(b) With the help of a flow chart, describe the movement of fluid A from the intercellular

spaces to the main circulatory system.

(c) What role does fluid A play in the digestion of food in humans?

 

Answer:

The two main fluids involved in the transportation of substances in the human body are:

  • Blood 
  • Lymph

(a)

  • Blood is a red liquid directly responsible for transporting hormones, nutrition, enzymes, respiratory gases and other molecules to the respective parts of the body.
  • Lymph is a colourless fluid that supplies nutrients such as fat-soluble vitamins and other digested fat molecules to the body, removes metabolic wastes from the tissue cells, and maintains the composition of tissue fluid.

Therefore, 

Fluid A - Lymph 

Fluid B – Blood

(b) intercellular spaces --> lymphatic capillaries --> lymph vessels --> larger veins

FUNCTION OF LYMPHATIC - Teachoo.jpg

(c) Lymph carries digested and absorbed fat from the intestines back to the blood.

 

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo