In comparison to a 0.01 M solution of glucose, the depression in the freezing point of a 0.01 M MgCl2 solution will be:
1. | Same | 2. | About twice |
3. | About three times | 4. | About six times |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following is:
1. | Two different solutions of sucrose of the same molality prepared in different solvents will have the same depression in freezing point. |
2. | The osmotic pressure of a solution is given by the equation π = CRT (where C is the molarity of the solution) |
3. | Decreasing order of osmotic pressure for 0.01 M aqueous solutions of BaCl2 > KCl > CH3COOH > sucrose |
4. | The vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following is:
1. | Units of atmospheric pressure and osmotic pressure are the same. |
2. | In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration. |
3. | The value of molal depression constant depends on nature of solvent. |
4. | Relative lowering of vapour pressure, is a dimensionless quantity. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the laws given in Column I with expressions given in Column II.
Column I | Column II |
A. Raoult’s law | 1. = CRT |
B. Osmotic pressure | 2. |
C. Elevation of boiling point | 3. |
D. Depression in freezing point | 4. |
Codes
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 1 | 2 | 3 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 3 | 1 | 4 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the correct option based on statements below:
Assertion (A): | When NaCl is added to water a depression in freezing point is observed. |
Reason (R): | The lowering of vapour pressure of a solution causes depression in the freezing point. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology