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At the same temperature and pressure, gas volumes are 4 litres, 10 litres, and 6 litres. What is their simplest volume ratio?

Answer and explanation

Correct answer: 2:5:3

The governing idea is direct comparison of gas volumes under identical temperature and pressure, as used in the law of combining volumes. Write the data as 4:10:6. The greatest common divisor of 4, 10, and 6 is 2. Dividing every term by 2 gives 4 ÷ 2 : 10 ÷ 2 : 6 ÷ 2 = 2:5:3. Thus option D is correct. Option A repeats the original ratio but does not simplify it. Option B changes the first and third terms, and option C incorrectly states that all three volumes are equal. The reduced ratio still preserves the original order and relative sizes: the second volume is 2.5 times the first, while the third is 1.5 times the first.

Related tags

ChemistryLaws-Of-Chemical-CombinationCombining-VolumesClass-11Laws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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