Chemistry-1.AITS-Open Test-P1 & P2 PAPER -1

CHEMISTRY- PAPER -1 SET Q.N. Original Question Q.N. Corrected Question A 26. A synthesis of 2,5-dimethyl-2-hexanol from 2-methyl propene requires the formation of two four carbon intermediates, X and Y. These intermediates combine to give the desired product after the usual hydrolysis work up. Select appropriated methods of preparing X and Y from 2-methyl propene. (A) X add HBr, then react with Mg in ether Y add 2-methyl propene (B) X add HBr (peroxides), then react with Mg in ether Y reacts with C6H5CO3H is CH2Cl2 (C) X add HOBr Y add B2H6 in ether, then NaOH (D) X add HOBr Y add HBr (peroxides), then react with Mg in ether Ans. B 26. A synthesis of 2,5-dimethyl-2-hexanol from 2-methyl propene requires the formation of two four carbon intermediates, X and Y. These intermediates combine to give the desired product after the usual hydrolysis work up. Select appropriated methods of preparing X and Y from 2-methyl propene. (A) For X add HBr, then react with Mg in ether, for Y add 2-methyl propene (B) For X add HBr (peroxides), then react with Mg in ether, for Y reacts with C6H5CO3H in CH2Cl2 (C) For X add HOBr, for Y add B2H6 in ether, then NaOH (D) For X add HOBr, for Y add HBr (peroxides), then react with Mg in ether Ans. B B 35. 35. C 32. 32. D 29. 29. A 32. Aluminium oxide exists in nature as gems with different colours. The reason for the difference in colour is that (A) the oxidation states of aluminium in these gems are different (B) the extent of crystallinity in these gem is different (C) the Al−O bonding is different in these gem structures (D) these are different transition metal ions present as impurities in these gems Ans. D 32. Aluminium oxide exists in nature as gems with different colours. The reason for the difference in colour is that (A) the oxidation states of aluminium in these gems are different (B) the extent of crystallinity in these gem is different (C) the Al−O bonding is different in these gem structures (D) there are different transition metal ions present as impurities in these gems Ans. D B 29. 29. C 26. 26. D 35. 35. AITS-OPEN TEST- CHEMISTRY- PAPER -2 (Solution) SET Q.N. Original Question Q.N. Corrected Question A 31. (A) 31. (A) B 34.(A) 34.(A) C 33.(A) 33.(A) D 32.(A) 32.(A)

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