R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Practice Paper 3, Exercise 1: 3; PRACTICE PAPER
R P Manchanda Science Solutions for Exercise - R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Practice Paper 3, Exercise 1: 3; PRACTICE PAPER
Attempt the free practice questions on Chapter 18: Practice Paper 3, Exercise 1: 3; PRACTICE PAPER with hints and solutions to strengthen your understanding. Together with Science Class 9 solutions are prepared by Experienced Embibe Experts.
Questions from R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Practice Paper 3, Exercise 1: 3; PRACTICE PAPER with Hints & Solutions
Give reason for the following:
An atom is electrically neutral.
Identify the kind of motion in the following cases:
(i) A car moving with constant speed turning around a curve.
(ii) An electron orbiting around nucleus.
An artificial satellite is moving in a circular orbit of radius 36,000 km. Calculate its speed if it takes 24 hours to revolve around the earth.
Why is uniform circular motion called accelerated motion?
An object starting from rest travels 20 m in first 2 s and 160 m in next 4 s. What will be the velocity after 7 s from the start?
Name any two air-borne diseases. How does the disease causing microbe spread through air?
How does HIV virus spread from a patient to a healthy person? Give any two methods of transmission of this disease.
How does the immune system of our body function?
