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UPSC CSAT • TOPIC PRACTICE

Mixture and Alligation

Practice all 5 questionsclassified under Mixture and Alligation.

5Questions
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TOPIC PRACTICEQuestion 1 of 5
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2026
Question 79
Replacement
There are two chemicals which do not react with each other. A container contains 10 litres of the chemical A. One litre of this chemical is removed from it and one litre of the chemical B is poured. Then one litre of the mixture is removed from the container and one litre of B is poured. If this process of replacing one litre of the mixture by one litre of B is performed once more, then what is the volume of B that is present in the container approximately (in percentage)?
i
UPSC CSAT marking

Correct answer: +2.5 marks. Incorrect answer: −1/3 of 2.5 marks (−0.8333 marks). Skipped questions receive 0 marks.