Malini Sheshdari Solutions for Chapter: Wastewater Story, Exercise 1: STEP IN

Author:Malini Sheshdari

Malini Sheshdari Science Solutions for Exercise - Malini Sheshdari Solutions for Chapter: Wastewater Story, Exercise 1: STEP IN

Attempt the practice questions on Chapter 18: Wastewater Story, Exercise 1: STEP IN with hints and solutions to strengthen your understanding. CONCERT Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from Malini Sheshdari Solutions for Chapter: Wastewater Story, Exercise 1: STEP IN with Hints & Solutions

EASY
7th CBSE
IMPORTANT

Why are manholes located at regular intervals along the path of a waste transport system?

EASY
7th CBSE
IMPORTANT

Aeration is the first stage in sewage treatment.

EASY
7th CBSE
IMPORTANT

Biogas is produced from sludge by the action of anaerobic bacteria.

EASY
7th CBSE
IMPORTANT

Aerobic bacteria cannot be used to digest food waste and soap in sewage.

EASY
7th CBSE
IMPORTANT

Almost 97% of activated sludge is bacteria.

EASY
7th CBSE
IMPORTANT

Dried sludge is rich in nutrients.

EASY
7th CBSE
IMPORTANT

What arrangements should be made for toilet at fairs and in exhibition grounds, where large numbers of people gather?

EASY
7th CBSE
IMPORTANT

What would happen If there was no safe sewage disposal system places such as refugee camps where people live, bathe, cook and eat together?