Start learning →

MP Board Class 12 (MPBSE) Surface Chemistry — practice questions

Explore 32 free Surface Chemistry questions in MP Board Class 12 (MPBSE) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Surface Chemistry with Quill →

Surface Chemistry questions and exercises with answers

Showing questions 1–30 of 32.

The MOLARITY of a solution containing 58.5 g NaCl dissolved in 1 L of solution is:Read the answer and worked solution →HENRY'S LAW states that at constant temperature:Read the answer and worked solution →A MINIMUM-BOILING azeotrope arises from:Read the answer and worked solution →Which of these is NOT a colligative property?Read the answer and worked solution →Salt is sprinkled on icy roads in cold countries to:Read the answer and worked solution →The van't Hoff factor (i) for sodium chloride (NaCl) in water is approximately:Read the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →True or false: Bohr's modelRead the answer and worked solution →Complete the reason Bohr's model failsRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Match each quantum number to what it is calledRead the answer and worked solution →True or false: the quantum mechanical modelRead the answer and worked solution →Order the structure: from atom down to electronRead the answer and worked solution →Complete the (n + l) ruleRead the answer and worked solution →True or false: orbital energiesRead the answer and worked solution →Match each rule to what it forbids or requiresRead the answer and worked solution →Tap every statement Hund's rule requiresRead the answer and worked solution →The fundamental particlesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Which principle is being described?Read the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every statement true of the Schrodinger modelRead the answer and worked solution →Reading the models backRead the answer and worked solution →Assertion and reason: filling orbitalsRead the answer and worked solution →

Worked practice questions

The MOLARITY of a solution containing 58.5 g NaCl dissolved in 1 L of solution is:

  1. $1$ M
  2. $0.5$ M
  3. $2$ M
  4. $58.5$ M
Show answer and solution

Correct answer: A. $1$ M

NaCl molar mass = 58.5 g/mol. So 58.5 g = 1 mole. 1 mole in 1 L = 1 M. Molarity = moles solute / litre solution.

Open this question →

HENRY'S LAW states that at constant temperature:

  1. Gas solubility is directly proportional to gas pressure
  2. Gas pressure is inversely proportional to volume
  3. Vapour pressure is proportional to mole fraction
  4. Boiling point is proportional to molality
Show answer and solution

Correct answer: A. Gas solubility is directly proportional to gas pressure

**HENRY'S LAW:** at constant T, gas solubility in a liquid ∝ pressure of the gas. Math: p = K_H × x. **Applications:** soda fountains (CO2 dissolved under pressure), scuba diving (decompression sickness).

Open this question →

A MINIMUM-BOILING azeotrope arises from:

  1. Negative deviation from Raoult's law (HNO3-water type)
  2. Positive deviation from Raoult's law (ethanol-water type)
  3. Ideal solution behaviour (benzene-toluene type)
  4. Two completely immiscible liquids (oil and water)
Show answer and solution

Correct answer: B. Positive deviation from Raoult's law (ethanol-water type)

**POSITIVE deviation from Raoult:** solute-solvent interactions weaker than pure-component → MORE vapour → higher vapour pressure → LOWER boiling point at certain composition. Forms minimum-boiling azeotrope. **Classic:** 95.6% ethanol + 4.4% water at 78.2°C.

Open this question →

How to practise

  1. Choose a Surface Chemistry question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Coordination CompoundsNamed ReactionsAlcohols Phenols EthersChemical KineticsSolid StateAlkenesAtomic combinationsAtoms and Elements