MCQOPTIONS
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MCQOPTIONS
This section includes 35 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The solubility of a substance is defined as the amount of solute in grams |
| A. | Present in 100g of the solvent |
| B. | present in 100g solution |
| C. | present in 100ml of the solution |
| D. | present in 1 litre of solution |
| Answer» B. present in 100g solution | |
| 2. |
A solution which contains the maximum amount of the solute that can be dissolved in a given amount of solvent at a particular temperature is called |
| A. | Saturated solution |
| B. | Unsaturated solution |
| C. | Super Saturated solution |
| D. | None of these |
| Answer» B. Unsaturated solution | |
| 3. |
Saturated solution of NaCI on heating becomes |
| A. | Supersaturated |
| B. | Unsaturated |
| C. | Remains saturated |
| D. | None of these |
| Answer» C. Remains saturated | |
| 4. |
Which one is equal to the solution of morality in a molar solutions ? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 5. |
Which is not a colligative properties ? |
| A. | Osmotic pressure |
| B. | Relative lowering of vapour pressure |
| C. | Depression in fessing point |
| D. | Refraction index |
| Answer» E. | |
| 6. |
The most convenient was of expressing concentration is |
| A. | Normality |
| B. | Molarity |
| C. | Molality |
| D. | Mole fraction |
| Answer» C. Molality | |
| 7. |
A 500 gm tooth paste sample has 0.2 gram fluoride concentration. What is the concentration of fluoride ion in terms of ppm level |
| A. | 250 |
| B. | 200 |
| C. | 400 |
| D. | 1000 |
| Answer» D. 1000 | |
| 8. |
Specific gravity of a solution is given by |
| A. | weight of 1ml solution |
| B. | mole of 1ml of solution |
| C. | density of 1ml solution |
| D. | None of these |
| Answer» B. mole of 1ml of solution | |
| 9. |
A solution contains 1 mole alcohol and 4 mole water. The mole fraction of water and alcohal will be |
| A. | 1/4 and 4/1 |
| B. | 4/1 and 1/4 |
| C. | 1/5 and 4/5 |
| D. | 4/5 and 1/5 |
| Answer» E. | |
| 10. |
Colligative properties of the solution depend upon |
| A. | Nature of solution |
| B. | Nature of solvent |
| C. | Number of solute particles |
| D. | Number of moles of solvent |
| Answer» D. Number of moles of solvent | |
| 11. |
The solubility of a gas in a liquid is directly proportional to the pressure of the gas. This statement is |
| A. | Raoult's law |
| B. | Henry's law |
| C. | Vant Hoff's law |
| D. | None of these |
| Answer» C. Vant Hoff's law | |
| 12. |
A mixture of benzene and toluene forms |
| A. | An ideal solution |
| B. | Non-ideal solution |
| C. | Suspension |
| D. | Emulsion |
| Answer» B. Non-ideal solution | |
| 13. |
Azotropic mixtures are |
| A. | Mixture of two solids |
| B. | those which boil at different temperatures |
| C. | those which can be fractionally distilled |
| D. | constant boiling mixture |
| Answer» E. | |
| 14. |
Ideal solution is formed when its components |
| A. | have zero heat of mixing only |
| B. | have zero volume change on mixing only |
| C. | have zero heat of mixing and zero volume change |
| D. | can be converted into gases |
| Answer» D. can be converted into gases | |
| 15. |
If glycerol and methanol were sold at the same price in market, which would be cheaper for preparing an antifreeze solution of the radiator of an automobile |
| A. | Glycerol |
| B. | Methanol |
| C. | Both are equal |
| D. | none of these |
| Answer» C. Both are equal | |
| 16. |
The molarity of pure water is |
| A. | 100m |
| B. | 55.6m |
| C. | 50m |
| D. | 18m |
| Answer» C. 50m | |
| 17. |
At high altitudes the boiling point of water lowers because |
| A. | atmospheric pressure is low |
| B. | temperature is low |
| C. | atmospheric pressure in high |
| D. | none of the above |
| Answer» B. temperature is low | |
| 18. |
Which a solution is separated from a solvent by a semipermable membrane then phenomenon taking place is called |
| A. | Osmosis |
| B. | Diffusion |
| C. | Plasmolysis |
| D. | None of these |
| Answer» B. Diffusion | |
| 19. |
The surn of mole fractions of the two components of a binary solution is always |
| A. | More than one |
| B. | Less than one |
| C. | Exactly one |
| D. | Not fixed |
| Answer» D. Not fixed | |
| 20. |
A 10 N solution stands for |
| A. | Normal solution |
| B. | Decanormal solution |
| C. | Decinormal solution |
| D. | Seminormal solution |
| Answer» C. Decinormal solution | |
| 21. |
8 gram NaOH is dissolved in one litre solution. Its molarity is |
| A. | 0.8 m |
| B. | 0.4 m |
| C. | 0.2 m |
| D. | 0.1 m |
| Answer» D. 0.1 m | |
| 22. |
The number of mole of solute per kilogram solvent is called |
| A. | Molarity |
| B. | Molality |
| C. | Normality |
| D. | None of these |
| Answer» C. Normality | |
| 23. |
In which mode of expression, the concentration of the solution remain independent of temperature ? |
| A. | Normality |
| B. | Molality |
| C. | Molarity |
| D. | Formality |
| Answer» C. Molarity | |
| 24. |
The number of mole of solute per litre solution is called |
| A. | Molality |
| B. | Normality |
| C. | Molarity |
| D. | Mole fraction |
| Answer» D. Mole fraction | |
| 25. |
The hard shell of an egg was dissolved in HCI. The egg was then placed in a concentration solution of NaCI. What will happens ? |
| A. | The egg will shrink |
| B. | The egg will swell |
| C. | The egg will become harder |
| D. | There will be hardly any visible change |
| Answer» B. The egg will swell | |
| 26. |
A solution which obeys Raoult's law is |
| A. | Normal |
| B. | Molar |
| C. | Ideal |
| D. | Saturated |
| Answer» D. Saturated | |
| 27. |
The solubility of a gas in liquid increases with |
| A. | increase in temperature |
| B. | reduction is gas pressure |
| C. | decrease in temperature and increase in gas pressure |
| D. | amount of liquid taken |
| Answer» D. amount of liquid taken | |
| 28. |
Blood has been found isotonic with |
| A. | saturated solution of NaCI |
| B. | saturated solution of KCI |
| C. | saturated solution of 1.1 mixture of NaCI and KCI |
| D. | normal sodium chloride solution |
| Answer» E. | |
| 29. |
The plant cell will shrink when placed in |
| A. | Water |
| B. | Hypotonic solution |
| C. | Hypertonic solution |
| D. | An isotonic solution |
| Answer» D. An isotonic solution | |
| 30. |
The law of relative lowering of vapour pressure was given by |
| A. | Van't Hoff |
| B. | Ostwald |
| C. | Lewis |
| D. | Raoult |
| Answer» E. | |
| 31. |
Blood cells do not shrink in blood because blood is |
| A. | Hypertonic |
| B. | Isotonic |
| C. | Equimolar |
| D. | Hypotonic |
| Answer» C. Equimolar | |
| 32. |
Isotonic solutions have the same |
| A. | Density |
| B. | Molar concentration |
| C. | Normality |
| D. | Strength |
| Answer» C. Normality | |
| 33. |
Semipermeable membrane is that which permits the passage of |
| A. | solute molecules only |
| B. | solvent molecules only |
| C. | solvent and solute molecules both |
| D. | neither solute nor solvent molecules |
| Answer» C. solvent and solute molecules both | |
| 34. |
Which inorganic precipitate acts as semipermeable membrane ? |
| A. | Calcium sulphate |
| B. | Barium oxalate |
| C. | Nickel phosphate |
| D. | Copper ferrocyonide |
| Answer» E. | |
| 35. |
To prepare a standard solution of a substance, which of the following is generally used ? |
| A. | A burette |
| B. | Small cylinder |
| C. | Measuring flask |
| D. | None of these |
| Answer» D. None of these | |