MCQOPTIONS
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MCQOPTIONS
This section includes 27 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Bio- gas mainly consists of |
| A. | carbon dioxide any hydrogen |
| B. | hydrogen and methane |
| C. | carbon dioxide and methane |
| D. | hydrogen and oxygen |
| Answer» D. hydrogen and oxygen | |
| 2. |
Which of the following gases will have the highest rate of diffusion ? |
| A. | O |
| B. | CO |
| C. | NH |
| D. | N |
| Answer» D. N | |
| 3. |
At N.T.P. volume of 22 gram of CO2 will be |
| A. | 22.4 litre |
| B. | 11.2 litre |
| C. | 6.5 litre |
| D. | 8.4 litre |
| Answer» C. 6.5 litre | |
| 4. |
The mass of 6.02 x 1023 molecules of CO is |
| A. | 28 g |
| B. | 14 g |
| C. | 7.0 g |
| D. | 56 g |
| Answer» B. 14 g | |
| 5. |
4.4 g of CO2 contains how many litre of CO2 at STP ? |
| A. | 2.4 litre |
| B. | 2.24 litre |
| C. | 44 litre |
| D. | 22.4 litre |
| Answer» C. 44 litre | |
| 6. |
Which one is lesser than dry air in weight ? |
| A. | O |
| B. | H |
| C. | Moist air |
| D. | None of these |
| Answer» D. None of these | |
| 7. |
What are the physical state of dispersion medium of a cloud ? |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | None of these |
| Answer» D. None of these | |
| 8. |
Vander Wall's equation explains the behaviour of |
| A. | ideal gases |
| B. | real gases |
| C. | mixture of gases |
| D. | diatomic gases |
| Answer» C. mixture of gases | |
| 9. |
When the universal gas constant (R) is divided by Avogadro's number (N), their ratio is called |
| A. | Planck's constant |
| B. | Rydberg's constant |
| C. | Boltzmann's constant |
| D. | van der Wall's constant |
| Answer» D. van der Wall's constant | |
| 10. |
The mass of 6.02 x 10 |
| A. | 28 g |
| B. | 14 g |
| C. | 7.0 g |
| D. | 56 g |
| Answer» B. 14 g | |
| 11. |
The density of the gas is equal to |
| A. | np |
| B. | MP/RT |
| C. | P/RT |
| D. | M/V |
| Answer» C. P/RT | |
| 12. |
At constant temperature and pressure the volume of a gas is directly proportional to the number of molecule. This law had been given by |
| A. | Boyle |
| B. | Charle |
| C. | Avogadro |
| D. | None |
| Answer» D. None | |
| 13. |
4.4 g of CO |
| A. | 2.4 litre |
| B. | 2.24 litre |
| C. | 44 litre |
| D. | 22.4 litre |
| Answer» C. 44 litre | |
| 14. |
If the vapour density of a gas is molecular mass will be |
| A. | 12 |
| B. | 16 |
| C. | 18 |
| D. | 28 |
| Answer» E. | |
| 15. |
Deviations from ideal behaviour will be more of the gas is subjected to |
| A. | low temperature and high pressure |
| B. | high temperature and low pressure |
| C. | low temperature |
| D. | high temperature |
| Answer» B. high temperature and low pressure | |
| 16. |
The rate of diffusion of hydrogen is about |
| A. | one half that of helium |
| B. | 1.4 times that of helium |
| C. | twice that of helium |
| D. | four times that of helium |
| Answer» C. twice that of helium | |
| 17. |
At constant temperature, the product of pressure and volume of a given amount of a gas is constant. This is |
| A. | Gay-Lussac law |
| B. | Charles' law |
| C. | Boyles' Law |
| D. | Pressure law |
| Answer» D. Pressure law | |
| 18. |
In general gas equation, pV=nRT, V is the volume of |
| A. | n mole of a gas |
| B. | any amount of gas |
| C. | one mole of a gas |
| D. | one gram of a gas |
| Answer» B. any amount of gas | |
| 19. |
Non ideal gases approach ideal behaviour |
| A. | high temperature and high pressure |
| B. | high temperature and low pressure |
| C. | low temperature and high pressure |
| D. | low temperature and low pressure |
| Answer» C. low temperature and high pressure | |
| 20. |
Which one law is not related to gas laws ? |
| A. | Boyle's law |
| B. | Charle's law |
| C. | Gay-Lusae's law |
| D. | Faraday's law |
| Answer» E. | |
| 21. |
At N.T.P. volume of 22 gram of CO |
| A. | 22.4 litre |
| B. | 11.2 litre |
| C. | 6.5 litre |
| D. | 8.4 litre |
| Answer» C. 6.5 litre | |
| 22. |
At constant pressure the volume of a definite mass of a gas is directly proportional to the ............... |
| A. | Temperature |
| B. | Density |
| C. | Both |
| D. | None |
| Answer» B. Density | |
| 23. |
According to kinetic theory of gases |
| A. | There are intermolecular attractions |
| B. | Molecule have considerable volume |
| C. | There is no intermolecular attraction |
| D. | Speed of molecules decreases of each collision |
| Answer» D. Speed of molecules decreases of each collision | |
| 24. |
The law of diffusion of gases had been given by |
| A. | Boyle |
| B. | Avogadro |
| C. | Grahm |
| D. | None |
| Answer» D. None | |
| 25. |
The ratio of rate diffusion of oxygen and hydrogen is |
| A. | 1 : 4 |
| B. | 1 : 1 |
| C. | 1 : 2 |
| D. | 2 : 2 |
| Answer» B. 1 : 1 | |
| 26. |
Absolute zero is the temperature where all gases are expected to have |
| A. | difference volumes |
| B. | same volume |
| C. | zero volume |
| D. | none of these |
| Answer» D. none of these | |
| 27. |
Bio- gas |
| A. | carbon dioxide any hydrogen |
| B. | hydrogen and methane |
| C. | carbon dioxide and methane |
| D. | hydrogen and oxygen |
| Answer» D. hydrogen and oxygen | |