Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202522 JanuaryMorning Shift
Exam
JEE Main
Year
2025
Date
22 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Solutions

JEE Main 2025 · 22 January · Morning Shift · Chemistry · Solutions

Arrange the following solutions in order of their increasing...

Arrange the following solutions in order of their increasing boiling points. (i) 10−4M NaCl10^{-4} \mathrm{M~} \mathrm{NaCl} (ii) 10−4M 10^{-4} \mathrm{M~} Urea (iii) 10−3M NaCl10^{-3} \mathrm{M~} \mathrm{NaCl} (iv) 10−2M NaCl10^{-2} \mathrm{M~} \mathrm{NaCl}

Options

  1. A(i) < (ii) < (iii) < (iv)
  2. B(iv) < (iii) < (i) < (ii)
  3. C(ii) < (i)≡() \equiv(iii) < (iv)
  4. D(ii) < (i) < (iii) < (iv)

Correct answer

D. (ii) < (i) < (iii) < (iv)

Step-by-step solution

ΔTb=i Kb.m.∝i.C.\Delta \mathrm{T}_{\mathrm{b}}=\mathrm{i} \mathrm{~K}_{\mathrm{b}} . \mathrm{m} . \propto \mathrm{i} . \mathrm{C} . where C=\mathrm{C}= concentration <tableclass="qx−match−listqx−match−table"border="1"cellpadding="6"cellspacing="0"><tr><td>Options</td><td>i.C.</td></tr><tr><td>(i)</td><td>2×10−4</td></tr><tr><td>(ii)</td><td>1×10−4</td></tr><tr><td>(iii)</td><td>2×10−3</td></tr><tr><td>(iv)</td><td>2×10−2</td></tr></table>B.P.order:<table class="qx-match-list qx-match-table" border="1" cellpadding="6" cellspacing="0"><tr><td>Options</td><td>i.C.</td></tr><tr><td>(i)</td><td>2 \times 10^{-4}</td></tr><tr><td>(ii)</td><td>1 \times 10^{-4}</td></tr><tr><td>(iii)</td><td>2 \times 10^{-3}</td></tr><tr><td>(iv)</td><td>2 \times 10^{-2}</td></tr></table> B.P. order : (ii) \text{ (ii) } <  (i) \text{ (i) } <  (iii) \text{ (iii) } <  (iv) \text{ (iv) }
Practice Solutions on Quantrex Academy →

More from Solutions

In a solvent S , a compound B is partially dissociated into C and D as given below: B… JEE Advanced 2026Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution… JEE Advanced 2026Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution… JEE Advanced 2026Given below are two statements: Given: Molar mass of C, H, O, Cl are 12, 1, 16 and 35.5 g… JEE Main 2026Which of the following statements are not correct? A. For water, magnitude of K_b is more… JEE Main 2026Given below are two statements : Statement I : H _2 O molecules move from the chamber 1… JEE Main 2026When 0.25 moles of a non-volatile, non-ionizable solute was dissolved in 1 mole of a… JEE Main 202620 g hemoglobin in a 1 L aqueous solution (A) at 300 K is separated from pure water by… JEE Main 2026 Full Solutions list All JEE Main PYQs