1. जब लोहे में जंग लगता है, तो उसका भार?/When iron rusts, what is its weight? A. बढ़ता है/increases B. घटता है/decreases C. उतना ही रहता है/remains the same D. अननुमेय/inadmissible Answer: A 2. निम्नलिखित में कौनसी धातु जल के साथ अभिक्रिया करके हाइड्रोजन पैदा नहीं करती?/Which of the following metals does not react with…
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