04. Structure of the Atom – Textbook Solutions
Page No. 39 Q1. What are canal rays?Ans: Canal rays are a type of positively charged radiation discovered by E. Goldstein in […]
Class 9th science solutions
Class 9th science solutions
03. Atoms and Molecules – Textbook Solutions
Page No. 27 Q1. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The
Class 9th science solutions
02. Is Matter Around Us Pure? – Textbook Solutions
Page No. 15 Q1. What is meant by a substance?Ans: A pure substance is one that is made up of only
Class 9th science solutions
1. Matter in Our Surroundings – Textbook Solutions
Page No. 3 Q1. Which of the following are matter?Chair, air, love, smell, hate, almonds, thought, cold, lemon water, the
Class 9th maths Solutions
12. Statistics – Textbook Solutions (Exercise 12.1)
Q1. A survey conducted by an organisation for the cause of illness and death among the women between the ages
Class 9th maths Solutions
11. Surface Areas and Volumes – Textbook Solutions (Exercise 11.1, 11.2, 11.3 and 11.4)
Exercise 11.1 Q1. Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm.
Class 9th maths Solutions
10. Heron’s Formula – Textbook Solutions (Exercise 10.1)
Q1. A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side ‘a’. Find the area of the
Class 9th maths Solutions
09. Circles – Textbook Solutions (Exercise 9.1, 9.2 and 9.3)
Exercise 9.1 Q1. Recall that two circles are congruent if they have the same radii. Prove that equal chords of
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08. Quadrilaterals – Textbook Solutions
Exercise 8.1 Q1. If the diagonals of a parallelogram are equal, then show that it is a rectangle.Ans: Given that,AC
Class 9th maths Solutions
07. Triangles – Textbook Solutions (Exercise 7.1-7.3)
Exercise 7.1 Q1. In quadrilateral ACBD, AC = AD and AB bisects ∠A. Show that ∆ ABC ≅ ∆