Class IX Chapter 2 Revision Quiz

The amount of solute present per unit volume or per unit mass of the solution/solvent is known as

• Composition of solute

• Concentration of a solvent

• Concentration of a solute

• Concentration of a solution

What is the solute in the soda water?

• Water

• Carbon dioxide

• Sugar

• Oxygen

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

• centrifugation

• seperating funnel

• fractional distillation

• distillation

A mixture of dye in a volatile liquid can be seperated by?

• evaporatoion

• sedimentation

• chromatography

• filtration

Tyndall effect is observed in forests because of

• tress

• high oxygen level

• mist and dust particles in the air

• less sunlight

Concentration of 36g of NaCl in 100 g of water is

• 23%

• 26.47%

• 29.32%

• 21.11%

This is a type of heterogeneous mixture in which the particles are dispersed and do not settle out.

• alloy

• solution

• suspension

• colloid

Which is/ are the example(s) of Solid Sol?

• Jelly

• Coloured gemstone

• Milk

• Milky glass

Which one is a mixture?

• BLOOD

• CARBON DIOXIDE

• SILICON

• SODIUM

• TIN

Which of the following is a physical change?

• RUSTING OF ALMIRAH

• MELTING OF BUTTER IN A PAN

• MAKING A FRUIT SALAD WITH RAW FRUITS

• BURNING OF PAPER AND WOOD

• DISSOLVING COMMON SALT IN WATER