Blog

Question 1.Express the following numbers in index form.i. Fifth root of 13ii. Sixth root of 9iii. Square root of 256iv. Cube root of 17v. Eighth root of 100vi. Seventh root of 30Solution: Solution:i. Fourth root of 81.ii. Square root of 49.iii. Fifth root of 15.iv. Ninth root of 512.v. Nineteenth root of 100.vi. Seventh root … Read more

Question 1.Draw a line l. Take a point A outside the line. Through point A draw a line parallel to line l.Solution:Steps of construction: Line m is the required line parallel to line l and passing through point A. Question 2.Draw a line l. Take a point T outside the line. Through point T draw … Read more

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