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Q. No.A mixture containing 2.3 g of formic acid (HCOOH) and 4.5 g of oxalic acid (H₂C₂O₄) is
heated with concentrated H₂SO₄. The gases evolved are passed through KOH pellets.
Calculate the mass of the gas that remains unabsorbed by KOH.
1. 1.4
2. 3.0
3. 2.8
4. 4.4
Subtopic: Equation Based Problem |
58%
Level 3: 35%-60%
NEET - 2018
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Which of the following samples contains the maximum number of water molecules?
1. 18 mL of water
2. 0.18 g of water
3. 0.00224 L water vapours at 1 atm and 273 K
4. 10-3 mol of water
1. 18 mL of water
2. 0.18 g of water
3. 0.00224 L water vapours at 1 atm and 273 K
4. 10-3 mol of water
Subtopic: Moles, Atoms & Electrons |
59%
Level 3: 35%-60%
NEET - 2018
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Which of the following is dependent on temperature?
| 1. | Molarity | 2. | Mole fraction |
| 3. | Weight percentage | 4. | Molality |
Subtopic: Concentration Based Problem |
83%
Level 1: 80%+
NEET - 2017
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Two elements, X and Y, form the compounds XY₂ and X₃Y₂. If 0.1 mol of XY₂ has a mass of 10 g and 0.05 mole of X₃Y₂ has a mass of 9 g, what are the atomic masses of X and Y, respectively?
| 1. | 40, 30 | 2. | 60, 40 |
| 3. | 20, 30 | 4. | 30, 20 |
Subtopic: Equation Based Problem |
78%
Level 2: 60%+
NEET - 2016
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- 1(current)
Q. No.
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