Jhara Roy Solutions for Chapter: Wastewater Story, Exercise 4: FORMATIVE ASSESSMENT

Author:Jhara Roy

Jhara Roy Science Solutions for Exercise - Jhara Roy Solutions for Chapter: Wastewater Story, Exercise 4: FORMATIVE ASSESSMENT

Attempt the practice questions on Chapter 18: Wastewater Story, Exercise 4: FORMATIVE ASSESSMENT with hints and solutions to strengthen your understanding. Interactive Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from Jhara Roy Solutions for Chapter: Wastewater Story, Exercise 4: FORMATIVE ASSESSMENT with Hints & Solutions

MEDIUM
7th CBSE
IMPORTANT

Dirty water generated at homes and in industries.

MEDIUM
7th CBSE
IMPORTANT

The points at which the sewer pipes change their direction.

MEDIUM
7th CBSE
IMPORTANT

The method of water treatment in which major solid impurities are removed is called primary or secondary or tertiary treatment.

EASY
7th CBSE
IMPORTANT

Name two disease-causing insects.

MEDIUM
7th CBSE
IMPORTANT

Bacteria that get settled at the bottom of the tank. (Anaerobic digester/Activated sludge)

HARD
7th CBSE
IMPORTANT

All plastic products such as bottles, cans, toys and plastic sheets are an equal environment hazard as plastic bags. Discuss.

MEDIUM
7th CBSE
IMPORTANT

Why is chlorine added to clarified water?

MEDIUM
7th CBSE
IMPORTANT

What can be the reason behind allowing the growth of an aerobic bacterial in the aeration tank during the second step of sewage treatment?