WB JEE 2020 | Liquid Solution Question 7 | Chemistry

WB JEE 2020

MCQ (Single Correct Answer)

-0.25

K_f (water) = 1.86 K kg mol^-1. The temperature at which ice begins to separate from a mixture of 10 mass % ethylene glycol is

$$ - $$1.86 $$^\circ $$C

$$ - $$3.72 $$^\circ $$C

$$ - $$3.3 $$^\circ $$C

$$ - $$3 $$^\circ $$C

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

Equal weights of ethane and hydrogen are mixed in an empty container at 25$$^\circ$$C. The fraction of total pressure exerted by hydrogen is

1 : 2

1 : 1

1 : 16

15 : 16

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

Assuming the compounds to be completely dissociated in aqueous solution, identify the pair of the solutions that can be expected to be isotonic at the same temperature.

0.01 M urea and 0.01 M NaCl

0.02 M NaCl and 0.01 M Na₂SO₄

0.03 M NaCl and 0.02 M MgCl₂

0.01 M sucrose and 0.02 M glucose

WB JEE Subjects