Brand new Course Package released! Get 99% off your first purchase with code “99”. Find out more!
Back
0

Shopping cart

Close

No products in the cart.

July 2022

Home2022JulyPage 9

29. The specific heat relation for ideal gas is

(a) Cp+Cv=R                         (b) Cp – Cv=R (c) Cp /Cv=R ...

35. One mole of monoatomic gas and three moles of diatomic gas are put together in a container. The molar specific heat

(in JK-1 mol-1) at constant volume is (R=8.3JK-1 mol-1 ) (a)  18.7                       ...

34. A gaseous mixture contains equal number of hydrogen and nitrogen molecules. Specific heat measurements on this mixture at temperatures below 100 K would indicate that the value of γ (ratio of specific heats) for this mixture is

(a)   3/2         (b)   4/3 (c)   5/3         (d)    7/5 Answer-c (63)

33. One mole of ideal monoatomic gas

[γ=(5/3)]  is mixed with one mole of diatomic gas [γ=(5/3)].  What is γ  for the mixture? γ denotes the ratio...

32. If two moles of diatomic gas and one mole of mono atomic gas are mixed then the ratio of specific heats is

(a) 7/3                                     ...

30. The specific heat of 1 mole of an ideal gas at constant pressure30. The specific heat of 1 mole of an ideal gas at constant pressure

(Cp)  and at constant volume (Cv)  which is correct (a)  Cp of hydrogen gas is (5/2)R (b)  Cv of hydrogen...

28. The quantity of heat required to raise one mole through one degree Kelvin for a monoatomic gas at constant volume is

(a)  (3/2)R                                   (b) (5/2)R...

27. For a gas the difference between the two specific heats is 4150 J/kg K. What is the specific heats at constant volume of gas if the ratio of specific heat is 1.4

(a) 8475 J/kg K                                (b) 5186J/kg K (c) 1660 J/kg K               ...

26. For hydrogen gas

Cp-Cv=a . and for oxygen gas Cp-Cv=b . So the relation between a and b is given by (a) a=16b ...

25. In gases of diatomic molecules, the ratio of the two specific heats of gases

Cp/Cv is (a)  1.66                                 ...

24. Which of the following formulae is wrong

(a) Cv=R/(γ-1)                                    (b)...

23. For a gas if γ=1.4 , then atomicity,

Cp and Cv of the gas are respectively (a)  Monoatomic,  (5/2)R ,(3/2)R          (b)  Monoatomic, (7/2)R ,(5/2)R...

22. The molar specific heat at constant pressure for a monoatomic gas is

(a) (3/2)R                                     ...

21. The specific heat of a gas

(a) Has only two values CP and Cv (b)  Has a unique value at a given temperature (c)   Can have...

20. The specific heats at constant pressure is greater than that of the same gas at constant volume because

(a)  At constant pressure work is done in expanding the gas (b)  At constant volume work is done in expanding ...

19. For a certain gas, the ratio of specific heats is given to be

γ=1.5. For this gas (a) Cv=(3R)/J                             ...

18. Supposing the distance between the atoms of a diatomic gas to be constant, its specific heat at constant volume per mole (gram mole) is

(a) (5/2)R                                     ...

17. The specific heat at constant volume for the monoatomic argon is 0.075 kcal/kg-K, whereas its gram molecular specific heat

Cv = 2.98 cal/mole/K. The mass of the argon atom is (a) 6.60×10-23 gm             ...

60. When temperature of an ideal gas is increased from

27°C  to 227°C , its r.m.s. speed changed from 400 metre/sec to Vs .The  is Vs (a)  516 metre/sec                  (b) ...

15. Molar specific heat at constant volume is

Cv  for a monoatomic gas is (a) (3/2)R                         ...

13. The specific heat of a gas at constant volume is 21.2 J/mole/°C. If the temperature is increased by 1°C keeping the volume constant, the change in its internal energy will be

(a) 0                                     ...

12. The relation between two specific heats of a gas is

(a)  Cp-Cv =R/J                             (b) Cv-Cp =R/J (c) Cp-Cv...

11. At constant volume the specific heat of a gas is  (3R)/2,  then the value of γ  will be      

(a) 3/2                                     ...

10. At constant volume, for different diatomic gases the molar specific heat is

(a)  Same and 3 cal/mole/°C approximately (b)  Exactly equal and its value is 4 cal/mole/°C (c)   Will be totally different...

9. For an ideal gas of diatomic molecules

(a) Cp=(5/2)R                           (b) Cv=(3/2)R (c) Cp-Cv=2R     ...

8. The value of

CV for one mole of neon gas is (a)  (1/2)R                     ...

7. For a gas

R/Cv=0.67 . This gas is made up of molecules which are (a) Diatomic (b)  Mixture of diatomic and polyatomic molecules...

6. A diatomic gas molecule has translational, rotational and vibrational degrees of freedom.

The Cp/Cv is (a)   1.67                                 ...

5. The degrees of freedom of a triatomic gas is

(a)  2                                     ...

4. If the degree of freedom of a gas are f,  then the ratio of two specific heats

Cp/Cv  is given by (a)  (2/f)+1                             ...

3. A cylinder rolls without slipping down an inclined plane, the number of degrees of freedom it has, is

(a)  2                                     ...

2. A diatomic molecule has how many degrees of freedom

(a)   3                                     ...

1. A monoatomic gas molecule has

(a) Three degrees of freedom (b)  Four degrees of freedom (c)   Five degrees of freedom (d)  Six degrees of freedom...

68. The gas having average speed four times as that of

SO2  (molecular mass 64) is (a) He (molecular mass 4)            (b) O2 (molecular mass 32) (c)   H2 (molecular mass 2) ...

67. A cubical box with porous walls containing an equal number of

O2 and H2 molecules is placed in a large evacuated chamber. The entire system is maintained at constant temperature T. The...

66. The r.m.s. speed of a certain gas is v at 400K. The temperature at which the r.m.s. speed becomes two times, will be

(a)  800 K                                         (b)  1600 K (c)   1200 K                     ...

65. At what temperature r.m.s. speed of air molecules doubles of that at N.T.P. is

(a) 819°C                                        (b)  719°C (c)   909°C                             ...

64. The r.m.s. speed of the molecules of a gas at a pressure

105 Pa and 0°C temperature  is 0.5 km sec-1 If the pressure is kept constant but temperature is raised to 819°C, the...

63. At constant volume, temperature is increased. Then

(a) Collision on walls will be less (b)  Number of collisions per unit time will increase (c)   Collisions will be...

62. If the pressure in a closed vessel is reduced by drawing out some gas, the mean free path of the molecules

(a) Is decreased (b)  Is increased (c)   Remains unchanged (d)  Increases or decreases according to the nature of the gas...

Popular posts

Haryana Police Recruitment Group C & D Vacancies & Coaching | Haryana CET Based Preparation
NEET 2026 FAQ – Syllabus, Exam Date, Preparation Tips & Course (Flame Institute)
SSC GD 2026, Notification, Apply Online, Vacancy, Eligibility, Exam Date, Syllabus, Online Form, Age Limit, PET/PST, Selection Process

Sign up to receive latest updates

Get in touch

Call us directly?

9888949978

Address

Flame Institute SCF 18 Near Chawla Lights Phase 7 Mohali

Email

FlameInstitute@gmail.com
Need some help?
Popular subjects
Need some help?

Youtube

2,3M Subribe

Facebook

2,3M Subribe

Instagram

2,3M Subribe

Twitter

2,3M Subribe
  • © 2025 Flame Institute.All rights reserved.
English
USD
error: Content is protected !!
Courses
Search

Search

    ArticlesCart