- 1(current)
Q. No.A mixture of and gas "Y" (mol. wt. 80) in the mole ratio a : b has a mean molecular weight of 40. What would be the mean molecular weight, if the gases are mixed in the ratio b : a under identical conditions? (assume that these gases do not react)
| 1. | 40 | 2. | 48 |
| 3. | 62 | 4. | 72 |
Subtopic: Moles, Atoms & Electrons | Equation Based Problem |
Level 3: 35%-60%
Hints
The number of moles of hydrogen gas liberated when 39 g of potassium reacts with 7.8 g of water is:
1. 0.22 mol
2. 0.43 mol
3. 0.50 mol
4. 1.0 mol
1. 0.22 mol
2. 0.43 mol
3. 0.50 mol
4. 1.0 mol
Subtopic: Equation Based Problem |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
(Given - Atomic wt ,Ca = 40, C= 12, O=16)
| 1. | 7.8 g | 2. | 5 g |
| 3. | 3.8 g | 4. | 2.8 g |
Subtopic: Equation Based Problem |
Level 3: 35%-60%
Hints
Links
A 1.00 g sample of which compound will produce the greatest amount of carbon dioxide after complete combustion with excess oxygen?
1. CH4
2. C3H8
3. C6H6
4. C8H18
1. CH4
2. C3H8
3. C6H6
4. C8H18
Subtopic: Equation Based Problem |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
9.8 gm \(KClO_3\) is decomposed and the weight loss was observed to be 0.384 gm. The percentage of \(KClO_3\) decomposed is:
1. 10%
2. 20%
3. 40%
4. 100%
1. 10%
2. 20%
3. 40%
4. 100%
Subtopic: Equation Based Problem |
Level 4: Below 35%
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.