Mole Concept Quiz 15 – Punjab Meritorious School Preparation Portal

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Molarity of liquid HCI with density equal to 1.17 g/ml is:

36.5

18.25

32.05

4.65

The maximum number of molecules is present in:

Equal volumes of 0.1 M AgNO₃ and 0.2 M NaCl are mixed. The concentration of NO₃ ions in the mixture will be:

0.1 M

0.05 M

0.2 M

0.15 M

What mass of sodium hydroxide is required to neutralise 100 mL of 0.1 N HCI?

4.0 g

0.04 g

0.4 g

2.0 g

1.5 litre of a solution of normality N and 2.5 litres of 2M HCI are mixed together. The resultant solution had a normality 5. The value of N is:

6

10

8

4

5.85 g of NaCl are dissolved in 90 g of water. The mole fraction of NaCl is:

0.1

0.01

0.2

0.0196

0.25 mole

0.5 mole

1 mole

0.01 mole

An oxide of a metal (M) contains 40% by mass of oxygen. Metal (M) has atomic mass of 24. The empirical formula of the oxide is:

6 L

5 L

10 L

7 L

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