Jammu and Kashmir Board Solutions for Chapter: Water, Exercise 4: WORKSHEET 16.4

Author:Jammu and Kashmir Board

Jammu and Kashmir Board Science Solutions for Exercise - Jammu and Kashmir Board Solutions for Chapter: Water, Exercise 4: WORKSHEET 16.4

Attempt the free practice questions on Chapter 16: Water, Exercise 4: WORKSHEET 16.4 with hints and solutions to strengthen your understanding. SCIENCE A TEXTBOOK FOR CLASS 7 solutions are prepared by Experienced Embibe Experts.

Questions from Jammu and Kashmir Board Solutions for Chapter: Water, Exercise 4: WORKSHEET 16.4 with Hints & Solutions

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 1

What is domestic sewage? What does it contain?

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 2

Name the metals whose salts are contained in industrial wastes. 

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 3

How can you say that a given sample of water is polluted?

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 4

Why is the river water not fit for drinking purposes?

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 5

What are the properties of potable water?

MEDIUM
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 6

What is the importance of aeration for purifying water?

EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 16 - Water>WORKSHEET 16.4>Q 7

Why do we add alum to water tank?