9th Class Chemistry MCQs

The atomic mass of an element expressed in gram is:

1. Gram molecular mass
2. Gram atomic mass
3. Gram formula mass
4. Mole

Example of heterogeneous mixture is:

1. Sugar and water
2. Sand and water
3. Salt and water
4. Ink and water

2 moles of sodium chloride (NaCl) is equal to?

1. 123 grams
2. 135 grams
3. 158 grams
4. 117 grams

Molarity of a solution which is prepared by dissolving 40g sodium chloride in 500cm^3 of solution is?

1. 1.4M
2. 1.33M
3. 1.33M
4. 1.5M

10% (w/w) sugar solution mean that 10 grams of solute dissolved in?

1. 90g of water
2. 95g of water
3. 100g of water
4. 105g of water

An example of true solution is:

1. Solution of starch
2. Solution of soap
3. Ink in water
4. Tooth paste

Which solution contain more water?

1. 1.0M
2. 0.75M
3. 0.5M
4. 0.25M

When a saturated solution is diluted, it change into:

1. Saturated solution
2. Unsaturated solution
3. Concentrated solution
4. Supersaturated solution

Butter is example of solution?

1. Gas-liquid
2. Solid-liquid
3. Liquid-solid
4. Gas-solid

A solution that contain solid solute into liquid solvent is called?

1. Solids in gas
2. Liquids in solids
3. Solids in solids
4. Solids in liquid