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Question 1.Choose the correct alternative.i. In the given figure, if line m || line n and line p is a transversal, then find x. (A) 135°(B) 90°(C) 45°(D) 40°Solution:(C) 45° Hint: ii. In the given figure, if line a || line b and line l is a transversal, then find x.(A) 90°(B) 60°(C) 45°(D) 30°Solution:(D) … Read more

Question 1.In the given figure, each angle is shown by a letter. Fill in the boxes with the help of the figure Corresponding angles:i. ∠p and __ii. ∠q and __iii. ∠r and __iv. ∠s and __ Interior alternate angles:v. ∠s and __vi. ∠w and __Solution:i. ∠wii. ∠xiii. ∠yiv. ∠zv. ∠xvi. ∠r Question 2.Observe the angles … Read more

Question 1.The number √2 is shown on a number line. Steps are given to show √3 on the number line using √2. Fill in the boxes properly and complete the activity. The point Q on the number line shows the number ……….A line perpendicular to the number line is drawn through the point Q. Point … Read more

Question 1.Write the following rational numbers in decimal form. Image Insert an image to make a visual statement. Styles DefaultRounded Settings ii. 15/42 iii. 9/14 iv. -103/5

Textbook Questions and Answers Question a.Prepare a questionnaire for a visit to a NGO working for cleanliness of marine beaches.Answer:A questionnaire for a visit to a NGO working for cleanliness of marine beaches is as follows : Field trip: Report writing: Field trips help in enhancing the understanding and sensitivity about the historical, economic, social, … Read more

1. Write the proper words in the blanks:(meridian, horizon, twelve, nine, apparent, celestial, ecliptic) Question a.When seen from a great distance, the sky seems to be touching the ground along a circle. This circle is called the …………… .Answer:horizon Question b.The ………….. is used while defining the zodiac sign.Answer:meridian Question c.Classified according to seasons, one … Read more

Textbook Questions and Answers 1. Write the appropriate terms in the blanks: Question a.The alloys called …………. and …………. are used for making industrial magnets.Answer:alnico, Nipermag Question b.A magnetic field can pass through ………… and …………. .Answer:cardboard, bottle Question c.The intensity of a magnetic field is indicated by the lines of …………. .Answer:force Question d.The … Read more

Textbook Questions and Answers 1. Fill in the blanks: Question a.Sound is generated by the rhythmic ……………. of any object.Answer:vibrations Question b.The frequency of sound is measured in …………….. .Answer:Hertz (Hz) Question c.If …………….. of sound is decreased its loudness also decreases.Answer:intensity Question d.A medium is necessary for …………… of sound.Answer:generation 2. Match the pairs. … Read more

Textbook Questions and Answers 1. Fill in the blanks. Question a.When the beams from the headlights of a car fall on an object in the night, the shadows – called ………. and ………… . can be seen.Answer:umbra, penumbra Question b.During a lunar eclipse the shadow of the …………. falls on the ………. .Answer:earth, moon Question … Read more

1. Describe natural resources with reference to the following 3 types: Question a.Mineral resourcesAnswer:Mineral wealth has an important place among natural resources. The rocks on the earth are mainly made of minerals. These minerals can be obtained by mining. Minerals that contain a high proportion of metals are ores, (i) Minerals are formed from the … Read more