Question

Q.3. Match the following :

Column I Column II

1. Iron (Fe)+ Oxygen (O2, from air)+ water (H2

O) a. Baking Soda2. MgO + H2

O -- b. BLue Vitriol / CuSo4

Copper sulphate

3. Sodium Hydrogen Carbonate (NaHCO3) c. Mg (OH)2

4. Copper Sulphate Pentahydrate (Cuso4

, 5H2

o) d) Rust (Iron Oxide)

Fe2

O3
Q.1 Choose and tick the correct option

Options

a) Feeling very hot i) Temperature below 200C or

Temperature above 400

C

b) Sweating too much ii) Humid weather or Dry weather

c) Very pleasant weather iii) Temperature above 400C or

Temperature about 200

C

d) Too cold iv) Temperature less than 50

C or

Temperature more than 150C

e) Early morning temperature v) Maximum temperature or

of a day Minimum temperature
​

Answer 1

Answer:

hi

Explanation:

it is very big sums I know

Answer 2

Answer:

1.d

2.c

3.a

4.b

Explanation:

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