Sujeet Kumar

Textbook Questions and Answers 1. Write answers to the following questions in your own words: Question a.Why is the weight of the same object different on different planets?Answer:The weight of the same object is different on different planets because weight depends on the gravitational force of the planet and gravitational force on every planet is … Read more

Textbook Questions and Answers 1. Classify according to food-type.Tiger, cow, vulture, bacteria, deer, goat, human, fungus, lion, sparrow, buffalo, frog, cockroach, tick.Answer: 2. Nutrition In Living Organisms Class 7 Exercise Match the pairs. Question 1. Column ‘A’ Column ‘B’ 1. Parasitic plant a. Mushroom 2. Parasitic plant b. Lichen 3. Saprophytic plant c. Drosera 4. … Read more

Textbook Questions and Answers Fill in the blanks with the appropriate term. Question 1.The capacity of air to hold moisture depends upon the …………… of the air.Answer:temperature Question 2.Water does not have a …………… but has definite ………… and ………. .Answer:shape, volume, mass Question 3.While freezing, the ………….. of water is lowered.Answer:density Question 4.…………….. soil … Read more

Textbook Questions and Answers 1. Give examples of 3 plants that have: Question a.Spiny fruitsAnswer:Jack fruit, Pineapple, Lychee (litchi), Datura Question b.Spiny stemAnswer:Cactus, Wild rose, Catclaw acacia, Silk, Cotton Question c.Red flowersAnswer:Rose, Dahlia, Hibiscus, Tulips, Question d.Yellow flowersAnswer:Marigold, Daffodil, Sunflower, Daisy Question e.Leaves which close at nightAnswer:Mimosa plant, Tallwood, Prayer plant, Gulmohar Question f.Single seeded … Read more

Textbook Questions and Answers 1. Find my match! Question a. Column ‘A’ Column ‘B’ 1. Lotus a. Flower and leaves attract insects 2. Aloe b. Haustorial roots for absoption of food 3. Cuscuta c. Adapted to live in deserts 4. Venus fly trap d. Adapted to live in water Answer: Column ‘A’ Column ‘B’ 1. … Read more

Question 1.The height of 30 children in a class is given in centimeters. Draw up a frequency table of this data.131, 135, 140, 138, 132, 133, 135, 133, 134, 135, 132, 133, 140, 139, 132, 131, 134, 133, 140, 140, 139, 136, 137, 136, 139, 137, 133, 134, 131, 140Solution: Question 2.In a certain colony, … Read more

Question 1.The daily rainfall for each day of a week in a certain city is given in millimeters. Find the average rainfall during the week.9, 11, 8, 20, 10, 16, 12Solution: Question 2.During the annual function of a school, a Women’s Self-help Group had set up a snacks stall. Their sales every hour were worth … Read more

Question 1.Factorize the following expressions: Solution:i. p² – q²Here, a = p, b = q∴ p² – q² = (p + q)(p – q)….[(a² – b²) = (a + b)(a – b)] ii. 4x² – 25y²= (2x)² – (5y)²Here, a = 2x, b = 5y∴ (2x)² – (5y)² = (2x + 5y)(2x – 5y)….[(a² – … Read more

Question 1.Factorise the following expressions and write them in the product form.i. 201a³b²ii. 91xyt²iii. 24a²b²iv. tr²s³i. 201a³b²= 3 × 67 × a³ × b²= 3 × 67 × a × a × a × b × b ii. 91xyt²= 7 × 13 × x × y × t²= 7 × 13 × x × y … Read more

Question 1.Use the formula to multiply the following:i. (x + y)(x – y)ii. (3x – 5)(3x + 5)iii. (a + 6)(a – 6) Solution:i. Here, a = x, b = y(x + y)(x – y) = x² – y²…. [(a + b)(a – b) = a² – b²] ii. Here, a = 3x, b = … Read more