Tiêu đề DPP-5 SOLUTION.pdf ✅

CLASS : XIth SUBJECT : CHEMISTRY DATE : DPP No. : 5 1 (d) Amorphous solids are isotropic, as these substances show same properties in all directions 2 (a) KE/molecule = 3 2 R N ∙ T 3 (d) u1/u2 = [ T1 T2 ] 4 (c) According to Clausis-Clapeyron, if a graph is plotted between log p and1 T , a straight line is obtained with negative slope. 5 (a) Ideal gas does not show Joule-Thomson effect. 7 (b) NH3 diffuses more readily than HCl because of low mol. wt.; r ∝ 1 M 8 (c) p(H2 ) = 1400 × 68.5 100 torr = 959 torr = 959/760 atm = 1.26 atm According to Henry’s law, amount of gas absorbed is directly proportional to pressure Hence, V 18 mL = 1.26 atm 1 atm V = 23 mL 9 (a) A atoms are at eight corners of the cube. Therefore, the number of A atoms in the unit cell = 8 8 = 1, atoms B per unit cell=1. Hence, the formula is AB Topic :- STATES OF MATTER Solutions

20 (a) According to Boyle’s law pV = constant The plot of pVagainst p is straight line parallel to x- axis ∴ Slope is zero.
ANSWER-KEY Q. 1 2 3 4 5 6 7 8 9 10 A. D A D C A C B C A C Q. 11 12 13 14 15 16 17 18 19 20 A. A B B B C D B A A A