Time Left - 06:00 mins

ISRO 2023 Quiz 3 Revision

Attempt now to get your rank among 152 students!

Question 1

Zero hardness of water can be achieved by

Question 2

If 2% solution of a sewage sample is incubated for 5 days at 20 degrees and depletion of oxygen was found to be 5 ppm, BOD of the sewage is

Question 3

The per capita demand of water is calculated in litres

Question 4

In a sludge digestion tank, the gas that mainly evolves is

Question 5

Direction: In the following question, which one of the given responses would be a meaningful order of the following words:
1) Act
2) Listen
3) Analyze
4) Observe
5) Judge
  • 152 attempts
  • 0 upvotes
  • 4 comments
Nov 29ESE & GATE CE