Question

Tick (7) the correct answer :-
1. Which of the following is soluble in water?
(a) Sand
(b) Oil
(c) Glycerine
(d) Iron filings
2. Which of the following is not a good conductor of heat?
(a) Bakelite
(b) Silver
(c) Stainless steel
(d) Brass
3. Which of the following is nonmagnetic in nature?
(a) Iron nails
(b) Alpins
(c) Clips
(d) Plastic Comb
4. Which of the following is a transparent material?
(a) Wood
(b) Cardboard
(c) Glass
(d) Stone
5. Which of these has the highest rate of diffusion?
(a) Gases
(b) Liquids
(c) Solids
(d) All have same​

Answer 1

Answer:

c,a,d,c,a

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Answer 2

Answer 1 (c) Glycerine

(Because sand particle will remain same in water,Oil will come on upper surface of water , Iron fillings also insoluble)

Answer 2 (c) Bakelite

(Bakelite is a insulator and bad conductorof heat also.)

Answer 3 (d) Plastic Comb

(Plastic is non magnetic in nature on another hand Clips , nails , alpins are magnetic due to iron contents)

Answer 4 (c) Glass

(Glass is transparent in nature , Cardboard , Glass & Stone are solid)

Answer 5 (a) Gases

(Gases is having higher diffusion rate)