NCERT Solutions For Class 9 Science Chapter 1 Matter in Our Surroundings Question 1. Which of the following are matter?Chair, air, love, smell, hate, almonds, thought, cold, cold-drink, smell of perfume.Answer: Chair, air, almonds, and cold-drink. Question 2. Give reasons for the following observation:The smell of hot sizzling food reaches you several meters away, but to…
NCERT Solutions for Class 9 Maths Chapter 15 Probability Ex 15.1 Ex 15.1 Class 9 Maths Question 1.In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary.Solution:Here, the total number of trials = 30∵ Number of times, the…
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.1 Ex 14.1 Class 9 Maths Question 1.Give five examples of data that you collect from your day-to-day life.Solution:Following are the five examples which are related to day-to-day life : Ex 14.1 Class 9 Maths Question 2.Classify the data in Q.1 above as primary or secondary…
NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes Ex 13.1 Ex 13.1 Class 9 Maths Question 1.A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, determine(i) The area of the…
NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula Ex 12.1 Ex 12.1 Class 9 Maths Question 1.A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side a. Find the area of the signal board, using Heron’s formula.If its perimeter is 180 cm, what will be the area of the signal…
NCERT Solutions for Class 9 Maths Chapter 11 Constructions Ex 11.1 Ex 11.1 Class 9 Maths Question 1.Construct an angle of 90° at the initial point of a given ray and justify the construction.Solution:Steprf of Construction:Step I : Draw AB¯¯¯¯¯¯¯¯.Step II : Taking O as centre and having a suitable radius, draw a semicircle, which cuts OA¯¯¯¯¯¯¯¯ at…
NCERT Solutions for Class 9 Maths Chapter 10 Circles Ex 10.1 Ex 10.1 Class 9 Maths Question 1.Fill in the blanks.(i) The centre of a circle lies in ___ of the circle. (exterior/interior)(ii) A point, whose distance from the centre of a circle is greater than its radius lies in ____ of the circle, (exterior/interior)(iii)…
NCERT Solutions for Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.1 Ex 9.1 Class 9 Maths Question 1Which of the following figures lie on the same base and between the same parallels. In such a case, write the common base and the two parallels.Solution:The figures (i), (iii) and (v) lie on…
NCERT Solutions for Class 9 Maths Chapter 7 Triangles Ex 7.1 Ex 7.1 Class 9 Maths Question 1.In quadrilateral ACBD, AC = AD and AB bisects ∠ A (see figure). Show that ∆ABC ≅ ∆ABD. What can you say about BC and BD?Solution:In quadrilateral ACBD, we have AC = AD and AB being the bisector of…
NCERT Solutions for Class 9 Maths Chapter 6 Lines and Angles Ex 6.1 Maths Question 1In figure, lines AB and CD intersect at 0. If ∠AOC + ∠BOE = 70° and ∠BOD = 40°, find ∠BOE and reflex ∠COE.Solution:Since AB is a straight line,∴ ∠AOC + ∠COE + ∠EOB = 180°or (∠AOC + ∠BOE) + ∠COE…