Question

Match the following
(i) Molarity
(ii) Molality
(iii) Bakelite
(iv) Teflon

(a) addition polymer
(b) condensation polymer
(c) depends on temperature
(d) independent of temperature

Answer 1

Hint: Molarity is defined as the number of moles of solute per litre of solvent. Bakelite on the other hand is a polymer formed from two monomers.

Complete Solution :
-We know that molarity is defined as the number of moles of solute per litre of solvent. Molarity is dependent on temperature as the volume of a solution increases with increase in temperature and molarity is affected by temperature.
So this option matches to (c)
-Molality is defined as the number of moles of solute per thousand grams of solvent .It is the ratio of moles to mass and mass remains constant with change in temperature .So it doesn’t depends on temperature and is independent of temperature.so this option matches to D
-Bakelite is a condensation polymer of phenol and formaldehyde. So this option matches to B
-Teflon is a addition polymer of tetrafluoroethene
So, the correct answer is “Option A”.

Note: Molality and molality shows temperature dependent and independent behaviour according to the change in masses and volume.