Wastewater Story - Exercise

NCERT Exemplar Solutions Class 7 Science Solutions for Wastewater Story - Exercise in Chapter 18 - Wastewater Story

Question 30 Wastewater Story - Exercise

Match the items of Column I with the items of Column II with reference to sewage.

Column I	Column II
a) Inorganic impurities	i) Phosphorus and Nirogen
b) organic impurities	ii) Nitrates and Phosphates
c) Nutrients	iii) Cholera and Typhoid
d) Bacteria	iv) Pesticides and Herbicides

Answer:

Column I	Column II
a) Inorganic impurities	ii) Nitrates and Phosphates
b) organic impurities	iv) Pesticides and Herbicides
c) Nutrients	i) Phosphorus and Nirogen
d) Bacteria	iii) Cholera and Typhoid

Video transcript

"hey guys welcome to lido q a video i am vinit your little tutor bringing you this question on your screen what force is responsible for the earth revolving around the sun so sir isaac newton realized that the same force that holds things together to the earth like the earth's atmosphere was responsible for holding the planets together with the sun now since the mass of the sun is bigger right the uh gravitational force of the sun is bigger than the planets therefore the gravitational force of the sun is responsible responsible for the earth revolving around the sun right guys if you still have a doubt please leave a comment below we'll try to get back to you do like the video and subscribe to our channel i'll see you in our next video until then bye guys keep learning keep flourishing"

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