Question

Attempt all the questions. All questions are
tompulsory
Ri. Multiple choice questions:-
a) Which of the following is a pure
substance?
i. Iron
ii.
iii. Brick
Salt water solution
Air
iv.
Ans:-...........
b) Which of the following is a chemical
change?
i.
Cooking of food
ii. Freezing of water
iii. Mixing of iron filling and sand
iv. Dissolving sugar into water
Ans:-....​

Answer 1

Answer:

1.Iron.

2 Dissolving sugar into water

Answer 2

Answer:

Hey

Explanation:

a) (i) Iron

b) (i) Cooking of food

HOPE HELPS

MARK BRAINLIST PLZZZ ☺️‼️