Solutions One Mark Online Test

Solutions One Mark Online Test (10th Standard Science)

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A solution is a __________ mixture.

A.homogeneous B.heterogeneous C.homogeneous and heterogeneous D.non homogeneous

The number of components in a binary solution is __________

A.2 B.3 C.4 D.5

Which of the following is the universal solvent?

A.Acetone B.Benzene C.Water D.Alcohol

A solution in which no more solute can be dissolved in a definite amount of solvent at a given temperature is called _______

A.Saturated solution B.Un saturated solution C.Super saturated solution D.Dilute solution

Identify the non aqueous solution.

A.sodium chloride in water B.glucose in water C.copper sulphate in water D.sulphur in carbon-di-sulphide

When pressure is increased at constant temperature the solubility of gases in liquid __________.

A.No change B.increases C.decreases D.no reaction

Solubility of NaCl in 100 ml water is 36 g. If 25 g of salt is dissolved in 100 ml of water how much more salt is required for saturation _____________.

A.12g B.11g C.16g D.20g

A 25% alcohol solution means

A.25 ml alcohol in 100 ml of water B.25 ml alcohol in 25 ml of water C.25 ml alcohol in 75 ml of water D.75 ml alcohol in 25 ml of water

Deliquescence is due to __________

A.Strong affinity to water B.Less affinity to water C.Strong hatred to water D.Inertness to water

Q10

Which of the following is hygroscopic in nature?

A.ferric chloride B.copper sulphate penta hydrate C.silica gel D.none of the above

Q11

A solution prepared by dissolving salt and sugar in water is an example of a ternary solution. How many solutes and solvents are present in this solution?

A.Two solutes and one solvent B.One solute and two solvents C.Three solutes and one solvent D.One solute and one solvent

Q12

Which of the following is an example of a liquid solute dissolved in a solid solvent?

A.Copper dissolved in gold B.Mercury mixed with sodium C.Water vapour in air D.Carbon dioxide dissolved in water

Q13

What is the solubility of glucose in water at 25°C?

A.36 g/100 g water B.80 g/100 g water C.91 g/100 g water D.184 g/100 g water

Q14

Which of the following pairs represents a solute and a non-aqueous solvent?

A.Sodium chloride and water B.Glucose and water C.Sulphur and carbon disulphide D.Copper sulphate and water

Q15

In which of the following processes does the solubility of the solid solute decrease as the temperature of the solution is increased?

A.Endothermic process B.Exothermic process C.Isothermal process D.Adiabatic process

Q16

Why do aquatic animals thrive more in cold regions than in warm regions?

A.Solubility of oxygen is higher at lower temperatures B.Solubility of carbon dioxide is lower at lower temperatures C.Cold water prevents the growth of harmful bacteria D.Water density is higher in cold regions

Q17

Which law states that the solubility of a gas in a liquid is directly proportional to the pressure of the gas over the solution at a constant temperature?

A.Boyle's Law B.Henry's Law C.Charles's Law D.Avogadro's Law

Q18

Why does the volume percentage of a liquid-in-liquid solution decrease when the temperature is increased?

A.Liquid solutes evaporate rapidly B.Liquids expand with an increase in temperature C.Dissolution of liquids is always exothermic D.Solute molecules undergo decomposition

Q19

In commercial products, the concentration of active ingredients in ointments and soaps is typically expressed in which format?

A.Volume / Volume percentage (v/v) B.Mass / Mass percentage (w/w) C.Mass / Volume percentage (w/v) D.Volume / Mass percentage (v/w)

Q20

What is the chemical formula and IUPAC name of Green Vitriol?

A.FeSO4 . 7H2O (Iron(II) sulphate heptahydrate) B.CuSO4 . 5H2O (Copper(II) sulphate pentahydrate) C.MgSO4 . 7H2O (Magnesium sulphate heptahydrate) D.ZnSO4 . 7H2O (Zinc sulphate heptahydrate)

Q21

When blue coloured copper sulphate pentahydrate crystals are heated, they turn white. This change in colour is due to the loss of:

A.Sulphate ions B.Copper ions C.Water of crystallization D.Oxygen gas

Q22

Deliquescence is most likely to occur under which of the following environmental conditions?

A.High temperature and dry atmosphere B.Low temperature and humid atmosphere C.High temperature and humid atmosphere D.Low temperature and dry atmosphere

Q23

Which of the following is a deliquescent substance, rather than a hygroscopic substance?

A.Concentrated Sulphuric acid (H2SO4) B.Phosphorus pentoxide (P2O5) C.Silica gel D.Caustic soda (NaOH)

Q24

If 1.5 g of a solute is dissolved in 15 g of water to form a saturated solution at 298 K, what is the solubility of the solute at this temperature?

A.1.0 g B.10 g C.15 g D.100 g

Q25

A solution is prepared by dissolving 45 g of sugar in 180 g of water. Calculate the mass percentage of the solute in this solution.

A.20% B.25% C.22.2% D.15%

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This free online practice test covers Solutions from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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