Is Matter Around us Pure

Is matter around us pure Worksheet-4

21. A small amount of the sample of a soil was mixed with water in a beaker. After stirring for sometime, the beaker was allowed to stand. The mud was found to settle down. The liquid above the mud was carefully filtered. The filtrate will be :

A. a true solution

B. a colloidal solution

C. can be a true solution or a colloidal solution

D. a suspension

Is matter around us pure Worksheet-5

1. Kerosene and Petrol are miscible liquids. The difference between their boiling points is more than 25°C. The two liquids can be separated from each other by _____.

A. Simple distillation                   B. Steam distillation

C. Fractional distillation             D. Any of these

2. Butter is separated from curd by _____.

A. Distillation                                B. Evaporation

Is matter around us pure Worksheet-6

1. A mixture of ethyl alcohol and water is homogeneous while that of oil and water is heterogeneous because _______ .

A. Ethyl alcohol and water are miscible liquids whereas oil and water are immiscible liquids

B. Ethyl alcohol and water are immiscible liquids whereas oil and water are miscible liquids

C. The constituents of a homogeneous mixture cannot be separated

D. The constituents of a heterogeneous mixture can be separated

2. Two gases ammonia and hydrogen chloride present in separate tubes are mixed together. Will they form mixture?

A. Yes, Mixture of ammonia, Hydrogen chloride and ammonium chloride will be formed