Question

22. A tailor while sewing cloth, aceidentally dropped and lost his needle in the
heap of clothes. Which is the best ponsible way to find out the needle
A Magnetie separation
B. Handpicking
C. Sieving
D. Threshing
23. While doing an activity the teacher anked Neha to handover a translucent
material. Which among the following material will Neha plok and give to her
teacher?
A. Aluminium foil
B. Glass tumbler
C. Wooden block
D. Frosted glass
...change while burning of wax is
24. Melting of wax is a
change.
A. Irreversible, Reversible
B. Physical, Reversible
C. Chemical, Irreversible
D. Reversible, Irreversible​

Answer 1

Answer:

22. A) Magnetic sepration

23. D) Frosted glass

24. B) Physical, Reversible

Explanation:

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Answer 2

Answer:

22 :- magnetic separation

23:-frosted glass ( refer the pic)

24:- physical, reversible

Magnetic separation :- needle can easily be attracted by the magnet so it will make it easier to find it without actually knowing where it is by gently moving around the heaped clothes area

frosted glass:- glasses are usually transparent but frosted glass look as though a lot of fog is in it which makes it translucent.

physical and reversible:-Melting of wax is physical change. In melting of wax, only the state of wax changes from solid to liquid. It is a reversible reaction and no new substance is formed. ... When the candle burns, the wax slowly melts which freezes after some time