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SHRIHARI SCHOOL - AMRELI, , , , , , , , , , , , , , CHAPTER-5 11- SCIENCE | | CHEMISTRY, ASSIGNMENT - 2, Section A, Write the answer of the following questions. [Each carries 1 Mark] (10), , 10., , Which curve in Fig. represents the curve of ideal gas ?, , (A) only B Fr, , . D, (B) C and D t 4, (©) E and FE q B, (D) A and B, , ty p—, Increase in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity, of liquid be affected by the increase in temperature ?, , (A) Increase (B) No effect, (© Decrease (D) No regular pattern will be followed, The graph ......... is known as isothermal., , , , 1, (A) pov (8) pVvov © Vor (D) P>>, , What is true order of average speed j1,,, maximum possible speed u,,,, and root mean square, speed u,,,, for any gas ?, , (A) Upp > Yar > Urms — (B) Upms > Yay > Ump — (OC) Upms > Ump > Yap — () Upp > Ups > Yaw, What is standard boiling point of H,0 ?, (A) Boiling point at 1 atm pressure (8) Boiling point at 1 bar pressure, (© 100°C (©) All of these, Magnitude of surface tension is depend upon ?, (A) Pressure (8) Temperature (© Both (D) None of these, Which of the following equation is known as Van der waal's equation ?, 2, , ) Benet 6) (p-2] (v+nb)=nRT, , an® an?, © =] (v-nb)=nRT ©) (r-2r} (v-nb)=nRT, , The time taken for diffusion of CO4(g) is twice than that of unknown gas of same volume under, identical condition. Calculate the molecular weight of unknown gas. (C = 12, O = 16), , (A) 11 gm/mol (B) 176 gm/mol (C) 88 gm/mol (D) 22 gm/mol, Calculate the number of N atoms in 5.6 gm of Nitrogen gas. (N = 14 gm/mol), , (A) 1.2044 x 1078 (B) 2.4088 x 1078 (© 1.2044 x 107? (D) 2.4088 x 1022, , What will be the pressure of 10 gram of a gas kept under atmospheric pressure, if its temperature, is changed from 546 K to 273 K ?, , L 1, (a) gbar (B) 273 bar (© 2 bar () 375 bar, , , , All The Best