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Solutions — NEET Chemistry MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

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Sample questions from this chapter

Which statement defines a solution?
  1. A homogeneous mixture of two or more components ✓
  2. A heterogeneous mixture whose particles settle
  3. A pure substance with variable composition
  4. A compound formed only by ionic bonding
Answer: A. A solution is a homogeneous mixture containing at least two components. Calling it a pure substance is the closest conceptual trap because a clear solution can look like one phase while retaining variable composition.
Why not B: A solution is uniform throughout and its components do not separate by settling.
Why not C: A pure substance has fixed composition, whereas a solution is a mixture with variable composition.
Why not D: Solution formation does not require chemical bonding or ionic components.
A solution contains 10 g glucose and 90 g water. What is the mass percentage of glucose?
  1. 9.0%
  2. 11.1%
  3. 10.0% ✓
  4. 90.0%
Answer: C. Mass percentage = 10/(10+90)×100 = 10.0%. The 11.1% trap uses solvent mass in the denominator, confusing percentage with a solute-to-solvent ratio.
Why not A: This incorrectly divides solute mass by 110 g rather than the 100 g solution mass.
Why not B: This divides by the solvent mass, 90 g, instead of total solution mass.
Why not D: This reports the water mass percentage rather than glucose percentage.
A solution contains 18.0 g glucose in 180 g water. What is its molality? Use molar mass of glucose = 180 g mol^-1.
  1. 0.556 mol kg^-1 from 0.100 mol divided by 0.180 kg ✓
  2. 0.100 mol kg^-1 by reporting the glucose mole amount
  3. 1.00 mol kg^-1 by treating the solvent mass as one kilogram
  4. 5.56 mol kg^-1 by using 0.018 kg as the solvent mass
Answer: A. Glucose moles = 18/180 = 0.100 mol and solvent mass = 0.180 kg, so m = 0.100/0.180 = 0.556 mol kg−1. The 0.100 trap stops after finding moles.
Why not B: Molality requires division by solvent mass in kilograms, not merely the solute mole amount.
Why not C: The solution contains 0.180 kg rather than one kilogram of solvent.
Why not D: The water mass is 0.180 kg, ten times the denominator used here.

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Questions

How many NEET questions are there on Solutions?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Chemistry chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.