Exercises QUESTION (1) Fill in the blanks. (1) The ……………….. is the major natural source of light for the Earth. (2) When light falls on opaque objects, the …………….. of light occurs. (3) The functioning of a …………. camera depends on the straight-line propagation of light. (4) A beam of light coming through a window […]
7. A Journey of Light – Exercises Read More »
Exercise (1) Choose the correct option and complete the sentences. (a) Ice is the ………… state of water. (solid, liquid, gas) (b) When light rays fall on an opaque substance, ………… (Some light passes through, all light passes through, light does not pass through) (c) Oil floats on water; this means the density of oil
6. Properties of Substances – Exercises Read More »
Exercises (1) State whether the following statements are true or false and give reasons. Solution 1 A person bitten by a snake should be made to run quickly to the hospital. False The person should avoid movement and be taken quickly to a hospital. 2 The body of a person suffering from sunstroke should be
5. Disaster management – Exercises Read More »
Exercises (1) Match the following correctly. Group A Group B (1) Aquatic (i) Frog (2) Living in muddy wetlands (ii) Swan (3) Amphibian (iii) Wild buffalo (4) Floating on the surface of water (iv) Fish Solution Aquatic — Fish Living in muddy wetlands — Wild buffalo Amphibian — Frog Floating on the surface of water
4. Diversity in Living Organisms – Exercises Read More »
📝 Practice Set 4.1 📝 Practice Set 4.2 📝 Exercise 4 Exercise 4 (1) Complete the table below. 2 5 10 17 Solution Observe the pattern in the number of dots: 12 + 1 = 2; 22 + 1 = 5; 32 + 1 = 10; 42 + 1 = 17;
Chapter 4 – Patterns – Exercise 4 Read More »
📝 Practice Set 4.1 📝 Practice Set 4.2 📝 Exercise 4 Practice Set 4.2 Identify the pattern in each of the number series given below and write the next three numbers. 1) 1, 1, 1, 1, 1, 1, …., …., …. 2) 1, 2, 3, 4, 5, 6, 7, …., …., …. 3) 1, 3,
Chapter 4 – Patterns – Practice Set 4.2 Read More »
📝 Practice Set 4.1 📝 Practice Set 4.2 📝 Exercise 4 Practice Set 4.1 (1) Fill in the blanks. i) ………. number is neither prime nor composite. ii) ………. is the smallest prime number. iii) ………. is the only even prime number. iv) ………. is the smallest odd prime number. Solution i) 1 is neither
Chapter 4 – Patterns – Practice Set 4.1 Read More »
📝 Practice Set 3.1 📝 Practice Set 3.2 📝 Exercise 3 Exercise 3 1 Choose the correct option. (i) −5 is ……… a) a whole number b) a natural number c) an integer d) a fraction (ii) −5 < 0 a) > b) < c) = d) None of the above Ans. (i) (c)
Chapter 3 In the World of Numbers – Exercise 3 Read More »
📝 Practice Set 3.1 📝 Practice Set 3.2 📝 Exercise 3 Practice Set 3.2 1 Write the correct symbol >, < in the box below. Ans. (i) (−10) < 6 (ii) (−19) < (−5) (iii) (−3) < 0 (iv) 8 < 12 (v) 5 > 0 (vi) (−3) > (−9) 2 Solve. Ans. (i) 4
Chapter 3 In the World of Numbers – Practice Set 3.2 Read More »
📝 Practice Set 3.1 📝 Practice Set 3.2 📝 Exercise 3 Mathematics • Practice Practice Set 3.1 1 Write the following numbers in words. (i) 49,38,67,521 (ii) 28,41,57,649 (iii) 2,37,50,145 (iv) 6,79,81,049 ✓ Answers Ans (i) ✓ 49,38,67,521 Forty nine crore thirty eight lakh sixty seven thousand five hundred twenty one. Ans (ii) ✓ 28,41,57,649
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