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The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will be
- a)0.20 mg/L
- b)0.25 mg/L
- c)0.30 mg/L
- d)0.40 mg/L
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The amount of bleaching powder containing 50% available chlorine to be...
Chlorine demand = Amount of Bleaching powder 
Chlorine demand
Chlorine demand = 0.25 mg/L
Chlorine demand
Chlorine demand = 0.25 mg/L
Most Upvoted Answer
The amount of bleaching powder containing 50% available chlorine to be...
Chlorine is commonly used as a disinfectant in water treatment to kill bacteria and other microorganisms. The amount of chlorine required to effectively treat a water sample is known as the chlorine demand. In this question, we are given that the amount of bleaching powder containing 50% available chlorine to be added to treat one liter of water sample is 0.5 mg.
Calculating the Chlorine Demand:
To calculate the chlorine demand, we need to determine the amount of chlorine required to treat the water sample.
Given that the bleaching powder contains 50% available chlorine, the amount of chlorine in 0.5 mg of bleaching powder is 0.5 mg * 0.5 = 0.25 mg.
Therefore, the chlorine demand of the water sample is 0.25 mg.
Answer Explanation:
The chlorine demand of the water sample is 0.25 mg.
Looking at the options provided:
a) 0.20 mg/L - This is less than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
b) 0.25 mg/L - This is the correct answer as it matches the calculated chlorine demand.
c) 0.30 mg/L - This is more than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
d) 0.40 mg/L - This is more than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
Therefore, the correct answer is option B, 0.25 mg/L.
By adding 0.25 mg/L of chlorine to the water sample, we can effectively treat it and ensure that it is safe for consumption.
Calculating the Chlorine Demand:
To calculate the chlorine demand, we need to determine the amount of chlorine required to treat the water sample.
Given that the bleaching powder contains 50% available chlorine, the amount of chlorine in 0.5 mg of bleaching powder is 0.5 mg * 0.5 = 0.25 mg.
Therefore, the chlorine demand of the water sample is 0.25 mg.
Answer Explanation:
The chlorine demand of the water sample is 0.25 mg.
Looking at the options provided:
a) 0.20 mg/L - This is less than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
b) 0.25 mg/L - This is the correct answer as it matches the calculated chlorine demand.
c) 0.30 mg/L - This is more than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
d) 0.40 mg/L - This is more than the calculated chlorine demand of 0.25 mg, so it is not the correct answer.
Therefore, the correct answer is option B, 0.25 mg/L.
By adding 0.25 mg/L of chlorine to the water sample, we can effectively treat it and ensure that it is safe for consumption.
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The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer?
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The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer?.
The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will bea)0.20 mg/Lb)0.25 mg/Lc)0.30 mg/Ld)0.40 mg/LCorrect answer is option 'B'. Can you explain this answer?.
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