Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solutino...
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Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solutino of density 1.15 g/mL. The momlarity of the solution is (A) 1.78 M (B) 2.00 M (C) 2.05 M (D) 2.22 M Extraction of metal from the ore casiterite involves (A) carbon reduction of an oxide ore (C) removal of copper (B) self-reduction of a sulphide ore (D) removal of iron impurity Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is (are) (A) H HC C-C H CH (B) H-CEC H -C CH (C) HC=C=O (D) HC=C=CH Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solutino of density 1.15 g/mL. The momlarity of the solution is (A) 1.78 M (B) 2.00 M (C) 2.05 M (D) 2.22 M Extraction of metal from the ore casiterite involves (A) carbon reduction of an oxide ore (C) removal of copper (B) self-reduction of a sulphide ore (D) removal of iron impurity Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is (are) (A) H HC C-C H CH (B) H-CEC H -C CH (C) HC=C=O (D) HC=C=CH
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Chemistry The Central Science
ISBN: 978-0321696724
12th edition
Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward
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