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CHEMISTRYWhen 0.1 g of hydrogen is burnt in oxygen, the number of water molecules produced isequal to(a) 6.02 x 1023 (b) 3,01 x 1023 (c) 3,01 x 10 (d) 6.02 x 1022How many moles of electrons weigh one kilogram?16.023(a) 6.02 x 10(b)-x1039.1089.10813233--x10%1(d)-*10*9.108x6.0233.Number of atom in 558.5 g Fe (At. wt. of Fe = 55.85 g mol-'), is(a) twice that in 60 g carbon (b) 6.023 x 1022(C) half that in 8 g He(d) 558.5 x 6.023 x 102316 34 -0.56 g of a gas occupies 80 cm' at NTP, then its molecular mass is(a) 4.8 (b) 44.8 © 2(d) 22.45.The maximum number of molecules will be present in(a) 16 g of NO, gas (b) 16 g of O, gas (©) 7 g of N, gas (d) 2 g of H, gasWhich has maximum number of atoms?(a) 24 g C(12) (6) 56 g of Fe (56) (c) 27 g of AI (27) (d) 108 g of Ag (108)6.7.Which of the following statements is dependent on temperature ?(a) Molality (b) Molarity (C) Mole fraction (d) Weight percentage3536-313839yoWhich of the following constitute 0.1 g mole?(a) 6.023 x 1022 molecules of benzene (b) 0.14 g of N, gasC) 2.24 litres of Co, at STP. (d) 0.40 g of He gasWhich of the following are elements ?(a) Diamond (b) Graphite (c) Fools gold (d)A&B9.10.Which of the following are mixtures ?(a) Gasoline (b) Steel (c) Sodium (d)A&BWhich of the following is/are mixture ?(a) lodised salt (b) Steam (c) Rb (d) Fr |
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Answer» that's TOOO long too ANS.....ask these QUESTIONS in bits and PIECES...... |
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