A) सल्फर B) निऑन C) नाइट्रोजन D) सोडियम Ans-D
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A) Pythagoras B) No single person can be credited with inventing math C) Euclid D) Isaac Newton Answer: B) No single person can be credited with inventing math
(a) 0.707Im (b) 0.5Im (c) Im (d) 2Im Answer: (a)
(a) XL (b) XC (c) R (d) Z Answer:(b)
Eminently hydraulic lime (a) Sets quickly (b) Slakes slowly (c) Does not set under water (d) Is useful for white washing Answer: (b)