58 At 27 C two moles of an ideal monoatomic gas occupy a

A mixture of gases contains 3 moles of oxygen and 2 moles of hydrogen at NTP The partial pressure of oxygen in the mixture will be 0 1 atm 1 atm 0 6 atm 0 4 atm

The closed cylinder shown in figure has a freely moving piston separating chambers 1 and 2 Chamber 1 contains 25 mg of N gas and chamber 2 contains 40 mg of helium gas When equilibrium is established what will be the ratio L L What is the ratio of the number of moles of N to the number of moles of He Molecular weights of N and He are 28 and 4 28 n 0 025 28 m Piston 0 04 4 8 93 10 4 2 L2 m1 0 089 M 0 01 rts a pressure of In equilibrium p and T are same PV nRT V on or Lon

59 Which of the following is not thermodynamical function a Enthalpy c Gibb s energy b Work done d Internal energy 1993

Aakash Rank Boost 1 An ideal monoatomic gas is carried around the cycle ABCDA as shown The efficiency of the gas cycle is PA 3P 1 1 2 Po 4 www 21 3 6 A Va C D 2 V

A container has a lid held in place by a spring as shown in figure Two moles of ideal mono atomic gas is kept inside the container having cross section area 100 cm at 300 K at atmospheric pressure 10 Pa The spring exerts a force of 1000 N when the lid is in place The maximum amount of heat that can be given to the gas so that gas does not escape from the container Assume heat capacity of the spring and container to be negligible R universal gas constant in SI units T 300K Ag P 105 pa 100 A F 1000N AU W W PAV W2NRAT ZAX 1000 P B 000 P I eeeeee C1500 B g nC AT n Cv R n 2 8 Cp s D 600 R

16 15 Two moles of a monatomic ideal gas undergo a cyclic process ABCDA as shown in figure BCD is a semicircle Find the efficiency of the cycle PA Id Povot Area 2po Po Po 2 I I 1 B A Vo C 2V V

26 kJ 2 2 12 kJ 3 4 18 kJ 4 1 05 kJ 100 Which of the following is intensive property of a 540 cal g thermodynamic system 1 P and T 3 V and P 101 Work dono in tent heat of 2 V and T 4 V and E

1 A cup of tea cools from 65 5 C to 62 5 C in 1 minute in a room at 22 5 C How long will it take to cool from 46 5 C to 40 5 C in the same room a 4 minutes c 1 minute b 2 minutes d 3 minutes

First Law of Thermodynamics and Specific Heat Capacity 2018 A sample of 0 1 g of water at 100 C and normal pressure 1 013 x 105 N m2 requires 54 cal of heat energy to convert to steam at 100 C If the volume of the steam produced is 167 1 cc the change in internal energy of the sample is 2 18 Cal 5 2 a 104 3 J c 42 2 J b 208 7 d 84 5J In a thermodynamic system Q repres transferred to or from a system by represents the energy transferred to or by work I Q 0 and W 0 III W 0 and Q 0 II Q 0 and IV W 0 and

49 A Carnot engine having an efficiency of n 1 10 as heat engine is used as a refrigerator If the work done on the system is 10 J the amount of energy absorbed from the reservoir at lower temperature is JEE MAIN 2007 Coefficient of performance of refrigerator