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GMAT Chemical Changes, Reactions & Atmospheric Pollution — practice questions

Explore 5 free Chemical Changes, Reactions & Atmospheric Pollution questions in GMAT Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Changes, Reactions & Atmospheric Pollution questions and exercises with answers

Showing questions 1–5 of 5.

A 40 L mix has 30% acid. Acid in litres:Read the answer and worked solution →A 60 kg milk container has 6 kg replaced with water, repeated twice more. Milk left is:Read the answer and worked solution →A 40 L mix has 30% acid. Acid in litres:Read the answer and worked solution →Mix 10 L of 20% acid with 30 L of 60% acid; final %:Read the answer and worked solution →Coffee at ₹120/kg mixed 1 : 3 with ₹80/kg. Mix price:Read the answer and worked solution →

Worked practice questions

A 40 L mix has 30% acid. Acid in litres:

  1. 12
  2. 8
  3. 10
  4. 14
Show answer and solution

Correct answer: A. 12

1. 30% of 40 = 12 L. _Source: 501-GMAT-Questions Section 4 / Manhattan Quant Bank_

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A 60 kg milk container has 6 kg replaced with water, repeated twice more. Milk left is:

  1. 34.24 kg
  2. 39.64 kg
  3. 43.74 kg
  4. 47.60 kg
Show answer and solution

Correct answer: C. 43.74 kg

1. After each replacement, milk fraction multiplies by (60 − 6)/60 = 54/60 = 0.9. 2. After 3 replacements: milk = 60 × 0.9³ = 60 × 0.729 = 43.74. 3. Therefore 43.74 kg remains. _Source: KMAT Karnataka 2021 PYQ Q.40_

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A 40 L mix has 30% acid. Acid in litres:

  1. 12
  2. 8
  3. 10
  4. 14
Show answer and solution

Correct answer: A. 12

1. 30% of 40 = 12 L. _Source: 501-GMAT-Questions Section 4 / Manhattan Quant Bank_

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