MCQOPTIONS
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MCQOPTIONS
This section includes 33 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following solutions of H2SO4 is more concentrated? |
| A. | 1 Molar solution |
| B. | 1 molal solution |
| C. | 1 normal solution |
| D. | All have same concentration |
| Answer» B. 1 molal solution | |
| 2. |
Which of the following unit of concertration is independent of temperature? |
| A. | Molarity |
| B. | Molality |
| C. | Mole fraction |
| D. | All |
| Answer» C. Mole fraction | |
| 3. |
Which of the following is an example of liquid in gas solution. |
| A. | Opals |
| B. | Dust particles in smoke |
| C. | Paints |
| D. | Fog |
| Answer» E. | |
| 4. |
The molal boiling point constant is the ration of the elevation of boiling point to |
| A. | Molarity |
| B. | Molality |
| C. | More fraction of solvent |
| D. | Mole fraction of solute |
| Answer» C. More fraction of solvent | |
| 5. |
Which of the following are the conditions of colligative properties |
| A. | Non-electrolye solute |
| B. | Non-volatile solute |
| C. | Dilute solution |
| D. | All of the above |
| Answer» E. | |
| 6. |
Which has the minimum freezing point? |
| A. | One Molal NaCI |
| B. | One molal KCI solution |
| C. | One molal CaCI2 |
| D. | One molal urea solution |
| Answer» D. One molal urea solution | |
| 7. |
Which of the following is not a colligative property? |
| A. | Lowering of vapour pressure |
| B. | Freezing point |
| C. | Osmotic pressure |
| D. | Elevation of polling point |
| Answer» C. Osmotic pressure | |
| 8. |
In partially miscible liquids the two layers are |
| A. | Saturated solutions of each liquid |
| B. | Unsaturated solutions of each liquid |
| C. | Normal solution of each liquid |
| D. | No layer formation takes place |
| Answer» B. Unsaturated solutions of each liquid | |
| 9. |
If the volume of solution is equal to sum of volumes of its all components then the solution |
| A. | Will be an ideal solution |
| B. | Will be non-ideal solution |
| C. | Will show deviations from Raoults law |
| D. | Both b & c |
| Answer» B. Will be non-ideal solution | |
| 10. |
The relative lowering of vapour pressure is |
| A. | Equal to the mole fraction of solvent |
| B. | Equal to the mole fraction of solute |
| C. | Directly proportional to the mole fraction of solute |
| D. | Both b & c |
| Answer» E. | |
| 11. |
The solution which distils over with change in composition |
| A. | Ideal solution |
| B. | Zeotropic solution |
| C. | Azeotropic solution |
| D. | Non-ideal solution |
| Answer» C. Azeotropic solution | |
| 12. |
Mixtures which distill over without change in composition called |
| A. | Zeotropic mixture |
| B. | Azeotropic mixture |
| C. | Amphoteric mixture |
| D. | Ideal solution |
| Answer» C. Amphoteric mixture | |
| 13. |
Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called |
| A. | Saturated solution |
| B. | Solubility |
| C. | Unsaturated solution |
| D. | Super saturated solution |
| Answer» C. Unsaturated solution | |
| 14. |
The determination of correct molecular weight from Raoults law is applicable to |
| A. | A volatile solute in dilute solution |
| B. | A non-electrolyte & non volatile solute in concentrated solution |
| C. | A non-electrolyte & non volatile solute in concentrated solute |
| D. | Non volatile solute in a dilute solution |
| Answer» E. | |
| 15. |
Solubility of KCIO3 gives |
| A. | Continuous and falling solubility curve |
| B. | Discontinuous and falling solubility curve |
| C. | Continuous and rising solubility curve |
| D. | Discontinuous and rising solubility curve |
| Answer» D. Discontinuous and rising solubility curve | |
| 16. |
Boiling point elevations can be measured by |
| A. | Beckmanns method |
| B. | Landsbergers method |
| C. | Linds method |
| D. | None of the above |
| Answer» C. Linds method | |
| 17. |
Beckmanns apparatus is used to measure |
| A. | Boiling point elevation |
| B. | Depression in freezing point |
| C. | Lowering of vapour pressure |
| D. | Lowering of osmotic pressure |
| Answer» C. Lowering of vapour pressure | |
| 18. |
Water molecules surrounds more around |
| A. | Ve ion |
| B. | Complex ion |
| C. | ?ve ion |
| D. | Neutral atom |
| Answer» B. Complex ion | |
| 19. |
The compounds in which water molecules are added are called |
| A. | Hydrated ions |
| B. | Double salts |
| C. | Hydrates |
| D. | Complexes |
| Answer» D. Complexes | |
| 20. |
Hydration is a process in which |
| A. | Molecules are surrounded by solvent molecules |
| B. | Ions are surrounded by solvent molecules |
| C. | Both ions and molecules are surrounded by solvent molecules |
| D. | Both ions and molecules are surrounded by water molecules |
| Answer» E. | |
| 21. |
Solution of Na2SO4 will be |
| A. | Basic |
| B. | Acidic |
| C. | Neutral |
| D. | Cannot be presicted without data |
| Answer» D. Cannot be presicted without data | |
| 22. |
Which of the following substance do not show continuous solubility curve? |
| A. | KCIO4 |
| B. | Na2SO4. 10H2O |
| C. | K2Cr2O7 |
| D. | PbCl2 |
| Answer» C. K2Cr2O7 | |
| 23. |
When common salt is dissolved in water? |
| A. | Boiling point of water dicrease |
| B. | Boiling point of water increase |
| C. | Boiling point of water remains same |
| D. | None of the above |
| Answer» C. Boiling point of water remains same | |
| 24. |
Every sample of matter with uniform properties and fixed composition is called |
| A. | Solute |
| B. | Solvent |
| C. | Solution |
| D. | Phase |
| Answer» E. | |
| 25. |
Homogeneous mixture of two or more than two compounds is called |
| A. | Solution |
| B. | Compound |
| C. | Radical |
| D. | Ion |
| Answer» B. Compound | |
| 26. |
The component of solution which is in smaller amount is called |
| A. | Solvent |
| B. | Solute |
| C. | Phase |
| D. | Ion |
| Answer» C. Phase | |
| 27. |
Solution with maximum concentration of solute at given temperature is called |
| A. | Super saturated solution |
| B. | Unsaturated solution |
| C. | Saturated solution |
| D. | Dilute solution |
| Answer» D. Dilute solution | |
| 28. |
10ml of alcohol dissolve in 90ml of water unit of concentration used is |
| A. | % w/w |
| B. | % w/v |
| C. | % v/v |
| D. | % v/w |
| Answer» D. % v/w | |
| 29. |
Number of moles in 1 kg of solvent is called |
| A. | Normality |
| B. | Molarity |
| C. | Molality |
| D. | Mole fraction |
| Answer» D. Mole fraction | |
| 30. |
ppm means |
| A. | Parts of solute in 1000 parts of solvent |
| B. | Parts of solvent in 1000 parts of solute |
| C. | Parts of solute in one million parts of solution |
| D. | Parts of solvent in one million parts of solute |
| Answer» D. Parts of solvent in one million parts of solute | |
| 31. |
Water of crystallization can be removed by |
| A. | Drying |
| B. | Heating |
| C. | Evaporation |
| D. | All of the above |
| Answer» C. Evaporation | |
| 32. |
The relative lowering of vapour pressure is directly proportional to molality if the solution is |
| A. | Concentrated |
| B. | Dilute |
| C. | Saturated solution |
| D. | All of the above |
| Answer» C. Saturated solution | |
| 33. |
Which one of the following salt does not hydrolyzed |
| A. | Na2SO4 |
| B. | AlCl3 |
| C. | CuSO4 |
| D. | NH4Cl |
| Answer» B. AlCl3 | |