NEET Chemistry: Some Basic Concepts Of Chemistry — MCQ Test 9

Q6. A 1 L sample of a gas at STP weighs 1.25 g and contains only carbon and hydrogen. If it produces 1.76 g of \( \ce{CO2} \) on burning, what is its molecular formula? (Atomic masses: C = 12, H = 1)

Q7. What is the mass of \( \ce{BaSO4} \) produced when 23.3 g of \( \ce{BaCl2} \) reacts with excess \( \ce{Na2SO4} \)? (Molar masses: \( \ce{BaCl2} \) = 208 g/mol, \( \ce{BaSO4} \) = 233 g/mol)

Q8. How many grams of \( \ce{Fe} \) are required to produce 8.96 L of \( \ce{H2} \) at STP with excess \( \ce{HCl} \)? (Atomic mass: Fe = 56)

Q9. A solution contains 15 ppm of \( \ce{CHCl3} \) by mass in water. What is its molality? (Molar mass: \( \ce{CHCl3} \) = 119.5 g/mol)

Q10. What is the mass of \( \ce{AgCl} \) produced when 34 g of \( \ce{AgNO3} \) reacts with excess \( \ce{NaCl} \)? (Molar masses: \( \ce{AgNO3} \) = 170 g/mol, \( \ce{AgCl} \) = 143.5 g/mol)

NEET Chemistry — Some Basic Concepts Of Chemistry

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What volume of \( \ce{O2} \) at STP is needed to burn 36 g of carbon to \( \ce{CO2} \), assuming 25% wastage? (Atomic mass: C = 12)

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Some Basic Concepts Of Chemistry. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Assuming, Fraction, Solution, Containing, Molarity, and Molality.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. What volume of \( \ce{O2} \) at STP is needed to burn 36 g of carbon to \( \ce{CO2} \), assuming 25% wastage? (Atomic mass: C = 12)

  • A. 89.6 L
  • B. 67.2 L
  • C. 44.8 L
  • D. 112 L

Q2. What is the mole fraction of water in a solution containing 36 g of water and 46 g of ethanol (\( \ce{C2H5OH} \))? (Molar masses: \( \ce{H2O} \) = 18 g/mol, ethanol = 46 g/mol)

  • A. 0.5
  • B. 0.667
  • C. 0.333
  • D. 0.75

Q3. What is the mole fraction of ethanol in a solution where 46 g of ethanol (\( \ce{C2H5OH} \)) is mixed with 18 g of water? (Molar masses: ethanol = 46 g/mol, water = 18 g/mol)

  • A. 0.25
  • B. 0.5
  • C. 0.75
  • D. 1.0

Q4. A solution of \( \ce{NaOH} \) has a molarity of 1 M and a density of 1.04 g/mL. What is its molality? (Molar mass: \( \ce{NaOH} \) = 40 g/mol)

  • A. 1 m
  • B. 0.96 m
  • C. 1.04 m
  • D. 1.2 m

Q5. How many grams of \( \ce{SO2} \) are produced when 8 g of sulfur is burned in 12 g of \( \ce{O2} \)? (Atomic masses: S = 32, O = 16)

  • A. 24 g
  • B. 12 g
  • C. 8 g
  • D. 16 g

+ 5 more questions in the actual test

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