Is Matter Around Us Pure?

Which of the following apparatus is not required in sublimation?

• Condenser

• Funnel

• China Dish

• Wire gauze

Suspension is _______ mixture

• Homogeneous

• Saturated

• Unsaturated

• Heterogenous

Cooking of food and digestion of food

• Are both physical processes

• Are both chemical processes

• Cooking is physical whereas digestion is chemical

• Cooking is a chemical whereas digetion is physical

Which of the following are homogeneous in nature?

(1) Ice (2) Wood (3) Soil (4) Air

• (1) and (3)

• (2) and (4)

• (1) and (4)

• (3) and (4)

How will you seperate oxygen from a mixture of liquid air?

• Centrifugation

• Seperating funnel

• Fractional distillation

• Distillation

Tyndall effect is observed in forests because of

• Trees

• High oxygen level

• Mist and dust particles in the air

• Less sunlight

Air is regarded as mixture because?

• It's pressure may vary

• It's temperature may vary

• Volume changes under different compositions

• It's compositions may vary

In which of the following constituents are present in the ratio?

• Mixture

• Solution

• Compound

• Colloid

When a saturated solution is heated and more solute is dissolved in it, what is such a solution called?

• Supersaturated Solution

• Colloidal Solution

• Aqueous Solution

• Thermo Saturated Solution

A sample contains two substances and has uniform properties. The

sample is

• A compound

• A heterogeneous mixture

• An element

• A homogeneous mixture