Question

Ques4–State True or False-
1.Butter is separated from butter milk by churning.-
2.Separation of components of a mixture is a useful process.
3.Ink loses its properties when mixed in water.
4.‘Sharbat’ is a mixture of sugar and water.
5.Rocks are pure substances.
6.Milk is a mixture.
7.Common salt is ai pure substance .
8.Mixture has properties different from its components.
9.Tap water and pond water are alike.
10.Elements are pure substances.
11.A pure substance has a fixed melting and boiling points.
12.Condensation method is used for separating substances which on heating change directly into vapour.SubstanceNumber of spoons of substance that dissolved in given amount of waterSalt1 spoon of salt in 100 gm water at 25°CSugar4 spoons of sugar in 100 gm water at 25°CCopper sulphateNearly 4 spoon of copper sulphate in 100 gm of water at 25°C

Answer 1

1) False

Correction :- Butter Is Separated From Butter milk by Process of aCentrifugation

2)True

3)False

Correction : Ink Maintains Its Property When Mixed in Water

4)True

5)False

Correction : Rocks Are Mixture Which is a Impure substance

6)True

7)True

8)False

Correction : Mixture has the Property same as its constituent

9)True

10)True

11)True

12)False

Correction : Sublimation Method Is Used To Separate The Substance Which turns Directly into the Vapours

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Answer 2

Butter milk separated from butter milk by process of a centrifugation is correct answer.