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Some Basic Concepts of Chemistry 1.Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y 2 weighs 9 g, the atomic weights of X and are (a)40, 30 (b)60, 40 (c)20, 30 (d)30, 20 2.What is the mass of the precipitate formed when 50 mL of 16.9% solution of AgNO3 is m mixed with 50 mL of 5.8% NaCl solution? (Ag = 107.8, N = 14, O = 16, Na = 23, Cl = 35.5) (a)  3.5 g   (b) 7 g (c)  14 g   (d) 28 g 3.If Avogadro number NA, is changed from 6.022 × 1023 mol–1 to 6.022 × 1020 mol–1, this would change the mass of one mole of carbon the ratio of chemical species to each other in a balanced equation the ratio of elements to each other in a compound the definition of mass in units of grams. (2015) 4)The number of water molecules is maximum in a) 1.8 gram of water b) 18 gram of water C) 18 moles of water (d) 18 molecules of water. (2015) 5)A mixture of gases contai...

1! Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y 2 weighs 9 g, the atomic weights of X and are (a) 40, 30 (b) 60, 40 (c) 20, 30 (d) 30, 20 (NEET-II 2016) What is the mass of the precipitate formed when 50 mL of 16.9% solution of AgNO3 is mixed with 50 mL of 5.8% NaCl solution? (Ag = 107.8, N = 14, O = 16, Na = 23, Cl = 35.5) (a)  3.5 g (b) 7 g (c)  14 g   (d) 28 g (2015) If Avogadro number NA, is changed from 6.022 × 1023 mol–1 to 6.022 × 1020 mol–1, this would change the mass of one mole of carbon the ratio of chemical species to each other in a balanced equation the ratio of elements to each other in a compound the definition of mass in units of grams. (2015) The number of water molecules is maximum in 1.8 gram of water 18 gram of water 18 moles of water (d)  18 molecules of water. (2015) A mixture of gases contains H2 and O2 gas...

In recent move to help start-ups, IIT Delhi is planning to allow it’s PhD students  convert their thesis into start-ups. IIT Delhi will give it’s students an option  to start their own venture  at a separate incubation centre set up by IIT. It will surely be a great boost to  startup  ecosystem in India and will allow researchers to start their own venture. As per reported by  Mint ,  V. Ramgopal Rao, director of IIT-Delhi said:   “It will be a platform to harness deep technology from blockchain to artificial intelligence via young companies. The aim is to convert thesis to start-ups,” Rao said, currently, some 25,000 researchers are pursuing doctoral studies at centrally funded technical schools (CFTIs). And IIT-Delhi will tap a portion of them and give them the option to start their own venture at a separate incubation centre. Those who will be shortlisted will be provided  a  monthly compensation “at par with the i...