Solution (CBSE)

Which aqueous solution has higher concentration?

• 1 Molar

• 1 Molal

• 1 Normal

• None of them

What is the normality of 1.5 M H₂SO₄ solution?

• 1 N

• 2 N

• 3 N

• 4 N

Value of which concentration term increases with increase in temperature?

• Normality

• Molarity

• Molality

• Formality

What is the sum of mole fraction of all the components in a three component system?

• 0

• 1

• 2

• 3

Molarity of a solution at 50⁰C will be ............. than molarity of a solution at 25⁰C.

• same

• more

• less

• unpredictable

What is the formula for a relation between pressure of a gas with its mole fraction in liquid solution?

• p = k_Hx

• p = x

• p = x/k_H

• None of these formulas

At a same temperature, hydrogen is more soluble in water than helium. Which of them will have a higher value of k_H?

• Hydrogen

• Helium

• Both hydrogen and helium have equal values

1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of resultant solution.

• 0.80 M

• 1.0 M

• 0.73 M

• 0.50 M

At equilibrium the rate of dissociation of a solid solute in a volatile liquid solvent is

• less than the rate of crystallisation

• greater than the rate of crystallisation

• equal to the rate of crystallisation

• zero

H₂S is a toxic gas used in qualitative analysis. If solubility of H₂S in water at STP is 0.195 m. what is the value of K_H?

• 0.0263 bar

• 69.16 bar

• 192 bar

• 282 bar