Jammu and Kashmir Board Solutions for Chapter: Friction, Exercise 2: TEST YOURSELF

Author:Jammu and Kashmir Board

Jammu and Kashmir Board Science Solutions for Exercise - Jammu and Kashmir Board Solutions for Chapter: Friction, Exercise 2: TEST YOURSELF

Attempt the practice questions on Chapter 14: Friction, Exercise 2: TEST YOURSELF with hints and solutions to strengthen your understanding. SCIENCE TEXTBOOK FOR CLASS 8 solutions are prepared by Experienced Embibe Experts.

Questions from Jammu and Kashmir Board Solutions for Chapter: Friction, Exercise 2: TEST YOURSELF with Hints & Solutions

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 4

State two disadvantages of friction.

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 5

Why is friction called a necessary evil?

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 6

What is a lubricant?

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 6

How does a lubricant reduce friction?

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 6

What kind of lubricant is used in (i) a sewing machine, (ii) the axle of a tractor?

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 7

Name two solid lubricants and state where they are used.

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 8

What do you understand by the term streamlining? Name a few machines which use streamlining to reduce friction.

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 14 - Friction>TEST YOURSELF>Q 9

Why is friction called a perverse force?