MCQOPTIONS
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MCQOPTIONS
| 1. |
Two students are calculating the average weight of a gas, containing N2 and other gases. Student-1 takes the actual molecular weight of N2(28) and student-2 takes it wrong N2(14). The calculated molecular weights by both of them are 36.8 and 31.2 respectively.What is the percentage of N2 in the mixture?a) 5%b) 10%c) 15%d) 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample? |
| A. | 5%b) 10%c) 15%d) 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample?a) 0.575 |
| B. | 10%c) 15%d) 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample?a) 0.575b) 0.85 |
| C. | 15%d) 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample?a) 0.575b) 0.85c) 1.25 |
| D. | 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample?a) 0.575b) 0.85c) 1.25d) 2.28View Answer |
| Answer» C. 15%d) 20% 8-10. NaOH is there in a test tube,8. What is the mass fraction of Na in the sample?a) 0.575b) 0.85c) 1.25 | |