Ecat Entry Test Chemistry Solutions MCQs

chemistry / By
Spread the love

Solution, Types of Solution, Properties of Solution, What is a Mixture, Characteristic of Solution.

The scientific world and industrial sector depend heavily on chemistry solutions to perform their essential operations. In a solution, two or more materials combine uniformly creating a homogeneous substance that dissolves a solute in a solvent.  Natural and everyday environments contain many solutions that include saltwater and sugar syrup and air and alloys. Studying chemistry solutions delivers fundamental knowledge about chemical processes as well as pharmaceutical designs and industrial operations.

Ecat Entry Test Chemistry Solutions MCQs

What is a Solution?

A solution represents a homogeneous mixture collection of two or more substances that appear uniform within a single phase. The smaller amount of substance represents the solute component while the larger amount exists as the solvent. The solvent material absorbs the solute particles until both components evenly distribute inside the mixture. The mixture of salt and water produces a saline solution while salt acts as the solute and water functions as the solvent.

Types of Chemistry Solutions

Solutions can be classified based on different factors such as their physical state and concentration levels. The major types include:

  • Solid-Solid Solutions – Alloys like brass (copper and zinc) and steel (iron and carbon) fall into this category.
  • Solid-Liquid Solutions – Saltwater and sugar syrup are common examples.
  • Liquid-Liquid Solutions – Vinegar (acetic acid in water) and alcoholic beverages are examples.
  • Gas-Liquid Solutions – Soft drinks (CO₂ dissolved in water) and oxygen dissolved in water for aquatic life are typical.
  • Gas-Gas Solutions – Air is a mixture of gases, primarily nitrogen and oxygen.

Properties of Chemistry Solutions

Solutions exhibit several fundamental characteristics that define their behavior:

  • Homogeneous Composition – The solute is evenly distributed within the solvent.
  • Transparency – Solutions are generally clear and allow light to pass through.
  • No Settling of Solute – Unlike suspensions, the solute in a solution does not settle at the bottom.
  • Osmosis and Diffusion – Solutions move through semi-permeable membranes through osmosis and diffusion hence playing crucial roles in biological systems.
  • Boiling and Freezing Point Changes – Adding a solute affects the boiling and freezing points of the solvent, known as colligative properties.

Concentration of Solutions

The quantity of solute contained within a solution depends on its concentration. The following methods exist to show solution concentration:

  • Molarity (M) – Moles of solute per liter of solution.
  • Molality (m) – Moles of solute per kilogram of solvent.
  • Mass Percent (%) – Mass of solute per 100g of solution.
  • Volume Percent (%) – Volume of solute per 100mL of solution.
  • Parts per Million (ppm) and Parts per Billion (ppb) – Used for extremely diluted solutions.

What is a Mixture?

Two or more substances combine physically in mixtures without establishing any particular substance proportions. A mixture differs from a solution as it exists either in a homogeneous or heterogeneous form. _solution and heterogeneous mixtures differ in appearance since the first presents uniformity while the second displays visible dissimilarities_

Characteristics of Solutions

  • Solutions have a stable composition over time.
  • Solutions make it easy to recover the dissolved substance through both evaporation procedures and distillation methods.
  • The distillation depends on temperature as well as pressure together with the properties of the solvent and solute.
  • Solutions maintain vital operations in chemical reactions as well as biological systems and industrial processes.

Sample MCQs on Chemistry Solutions

1. Which of the following solutions has the highest boil point?

  • 18.0% solution of glucose
  • 5.85% solution of sodium chloride
    correct
  • All have the same boiling point
  • 6.0% solution of glucose

2. Colligative properties are the properties of:

  • Both a and b
  • Dilute solutions which behave as nearly ideal solutions
    correct
  • Concentrations solutions which behave as nearly non-ideal solution
  • Neither a nor b

3. A solution of two components is called:

  • Original solution
  • Binary solution
    correct
  • Standard solution
  • Dilute solution

4. If the ionic product of a solution is less than the solubility product, the solution is:

  • Ideal
  • Supersaturated
  • Unsaturatedcorrect
  • Saturated

5. The ratio of the number of moles of a particular component of the solution to the total number of moles of all the components of the solution is called:

  • % age
  • Mole fraction
    correct
  • Formality
  • Molarity

6. The molal boiling point constant is the ratio of the elevation in boiling point to:

  • Mole fraction of solvent
  • Mole fraction of solute
  • Molality
    correct
  • Molarity

7. A solution of glucose is 10 percent. The volume in which 1g mole of it is dissolved will be

  • 1.8 dm³
    correct
  • 1 dm³
  • 200 cm³
  • 900 cm³

8. Number of moles of solute dissolved in 1kg of solvent is called:

  • Formality
  • Molarity
  • Mole fraction
  • Molalitycorrect

9. Dust particles in smoke is a solution of the type

  • solid is solute and liquid is solvent
  • Gas is solute and solid is solvent
  • Liquid is solute and solid is solvent
  • Solid is solute and gas is solvent
    correct

10. The number of moles of ammonium Chloride dissolved in 500cm¯³ of its 15% W/N solution is:

  • 1.4 mol
  • 2.0 mol
    correct
  • 1.0 mol
  • 2.4 mol

11. A homogeneous mixture of two or more than two chemical substances is called:

  • Solute
  • Solvent
  • Solution
    correct
  • Salvation

12. What is the molarity of a solution containing 15g urea in 500 cm³ of solution?

  • 1.0 M
  • 2.0 M
  • 1.5 M
  • 0.5 M
    correct

13. 10ml of 1.5M NaOH solution is naturalized by 20ml of a __ M HCI solution. The value of a will be:

  • 0.25
  • 0.75
  • 1
  • 0.5correct

14. The molarity of the solution containing x grams (NH₄)₂ SO₄ in 500 cm³ of the solution is 0.6. What is x?

  • 45.1
  • 40.5
  • 39.6
    correct
  • 42.7

15. Azeotropic mixture of two liquids boils at a lower temperature than either of them, when:

  • It shows positive deviation from Rault’s law
    correct
  • It is metastable
  • It shows negative deviation from Rult’s law
  • It is saturated

16. An aqueous solution of ethanol in water has vapour pressure:

  • Equal to that of water
  • Less than that of water
  • Equal to that of ethanol
  • More than that of H₂O
    correct

17. Molarity of pure water is:

  • 18
  • 55.5correct
  • 6
  • 1

18. Silver amalgam is a solution consisting of the type:

  • Gas is solute and solid is solvent
  • liquid is solute and solvent is solid
    correct
  • solid is solute and solid is the solvent
  • liquid is solute and liquid is solvent

19. The % age by weight of NaCI, if 6.0g of NaCI is dissolved in 120g of H₂O is:

  • 11.55%
  • 10.50%
  • 8.02%
    correct
  • 5%

20. 18 g of glucose is dissolved in 90g of water. The relative lowering of vapour pressure is equal to:

  • 5.1
  • 1/5
  • 6
  • 1/51
    correct

21. Two solutions of NaCI and KCI are prepared separately by dissolving same moles of them in the fixed amount of solvent. Which of the following statements is true for these solution?

  • KCI solution possesses lower freezing point than NaCI solution
  • KCI and NaCI solutions possess same vapour pressure
    correct
  • Both the solutions have different boiling point
  • KCI solution will have higher boiling point than NaCI solution

22. If ionic product of solution is greater than solubility products, the solution is:

  • None of above
  • Saturated
  • Unsaturated
  • Supersaturated
    correct

23. The process in which water molecules surround solute particles is called:

  • Hydrolysis
  • Hydration
    correct
  • Salvation
  • Dehydration

24. The molarity of toluene solution in benzene is 0.22 if 5.0g of toluene dissolved, then mass of benzene in grams is:

  • 240
  • 260
  • 247correct
  • 267

25. A solution which contains a relatively small amount of solute dissolved in the solvent is called?

  • Saturated solution
  • Ideal solution
  • Concentrated solution
  • Dilute solution
    correct

Conclusion

Different scientific subjects require a thorough understanding of Chemistry Solutions because their applications extend into medical research fields and engineering development as well as environmental investigations. Studying solutions provides essential predictive power for chemical reactions and enables to establishment of industrial procedures and interpret biological phenomena including osmosis. Understanding solubility together with concentration and properties of colligative solution allows students to achieve high grades in the ECAT Entry Test and use this knowledge for real-world applications.

For more ECAT Chemistry MCQs and online preparation, visit Nokryan.com!

Chemistry

Scroll to Top