MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the ratio of densities of 2 gases, O2 & N2, having partial pressures in the ratio 2:3? |
| A. | 16/21 |
| B. | 12/7 |
| C. | 21/16 |
| D. | 7/12 |
| Answer» B. 12/7 | |
| 2. |
There are 3 non-interacting ideal gases in a container. The moles of gases 1,2 & 3 are in the ratio 1:3:5. If the total pressure is 54Pa, find the value of partial pressure of gas 1. |
| A. | 6Pa |
| B. | 12Pa |
| C. | 18Pa |
| D. | 28Pa |
| Answer» B. 12Pa | |
| 3. |
What is the mass of 22.4L of CO2at STP? |
| A. | 1g |
| B. | 44g |
| C. | 44kg |
| D. | 1kg |
| Answer» C. 44kg | |
| 4. |
What is the number of molecules in 2.24L of SO2 at STP? |
| A. | 6.023*1023 |
| B. | 6.023*1022 |
| C. | 6.023*1020 |
| D. | 6.023*1021 |
| Answer» C. 6.023*1020 | |