Question

Multiple Choice Questions :
Which is a set of immisicible materials in water ?
(a) Glass
(b) Wax
(c) Mustard oil
(d) All of these​

Answer 1

Answer:

An iron nail kept in soft drink would lose its shine and appear dull became soft drink contains carbonic acid which reacts with iron nail, so it gives dull appearance.

Iron nail has no reaction with mustard oil, coconut oil and kerosene, so does not lose its shine, when kept in these solutions.

Question 2:

Pick one material from the following which is completely soluble in water.

(a) Chalk powder

(b) Tea leaves

(c) Glucose

(d) Sawdust

Solution:

(c) Glucose is completely soluble in water because its particles are so small and spread uniformly in water that we cannot see them. But chalk powder, tea leaves and sawdust are insoluble in water and settle down at the bottom of the container.

Question 3:

You are provided with the following materials:

Magnifying glass

Mirror

Stainless steel plate

Glass tumbler

Which of the above materials will you identify as transparent?

(a) (1) and (2)

(b) (1) and (3)

(c) (1) and (4)

(d) (3) and (4)

Solution:

(c) Through magnifying glass and glass tumbler we can see the objects clearly so these materials are transparent.

Question 4:

Answer 2

Answer:

glass

Explanation:

because it like a water coloured and when it mix up in water it cannot be seen