Solutions Additional One Mark Online Test

Solutions Additional One Mark Online Test (10th Standard Science)

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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

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

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

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

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

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

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

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

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)

Q10

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)

Q11

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

Q12

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

Q13

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)

Q14

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

Q15

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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