Question

II. Answer the following in short answer questions
1] What are weeds? How can we control them?
2] What happens when iron nails are placed in copper sulphate solution? Give
equations.
3] Give the uses of coal and petroleum.
4] What is 5R Principle?
5] Write short notes on irrigation.
6] Give the properties of metals and non-metals.

Answer 1

Answer:

1 ) Weeds are unwanted grass in between the crops

2 ) Don't know

3 ) Coal is used industries, household work

4) Don't know

5) irrigation is the method of giving water to plants in different ways

6) Metals are what they have iron in it

Non metals are what they don't have iron ( Think So )

Answer 2

Answer:

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