Match the LIST-I with LIST-IILIST-I (Disinfectant byproducts (DBPs) of Chlorine) LIST-II (Chemical Composition) A. Dibromochloromethane I. CHBr₂Cl B. Bromoform II. CHCl₃ C. Bromodichloromethane III. CHBrCl₂ D. Chloroform IV. CHBr₃
Choose the correct answer from the options given below:सूची-I का सूची-II के साथ मिलान कीजिएसूची-I (क्लोरीन के कीटाणुनाशक उपोत्पाद - DBPs) सूची-II (रासायनिक संघटन) A. डाइब्रोमोक्लोरोमेथेन I. CHBr₂Cl B. ब्रोमोफ़ॉर्म II. CHCl₃ C. ब्रोमोडाइक्लोरोमेथेन III. CHBrCl₂ D. क्लोरोफ़ॉर्म IV. CHBr₃
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: D. A-III, B-I, C-IV, D-II
Explanation
The chemically correct matching is: Dibromochloromethane = CHBr₂Cl (I), Bromoform = CHBr₃ (IV), Bromodichloromethane = CHBrCl₂ (III) and Chloroform = CHCl₃ (II), i.e. A-I, B-IV, C-III, D-II. No option gives this combination, which is why NTA dropped the question and awarded marks to all candidates. Option 3 shown above is only the nearest choice (B and D correct, A and C interchanged).रासायनिक दृष्टि से सही मिलान है: डाइब्रोमोक्लोरोमेथेन = CHBr₂Cl (I), ब्रोमोफ़ॉर्म = CHBr₃ (IV), ब्रोमोडाइक्लोरोमेथेन = CHBrCl₂ (III) तथा क्लोरोफ़ॉर्म = CHCl₃ (II), अर्थात् A-I, B-IV, C-III, D-II। कोई भी विकल्प यह संयोजन नहीं देता, इसीलिए एन. टी. ए. ने इस प्रश्न को हटा (Drop) दिया और सभी अभ्यर्थियों को अंक दिए। ऊपर दिखाया गया विकल्प 3 केवल निकटतम विकल्प है (B तथा D सही, A तथा C परस्पर बदले हुए)।More People, Development and Environment questions
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