NEET Chemistry Solutions Class 12 Questions

Which of the following aqueous solutions should have the highest boiling point?

Calculate molarity of 63% w/w HNO₃ solution if density is 1.4 g/mL.

2.82 g of glucose is dissolved in 30 g of water. The mole fraction of glucose in the solution is

The molar concentration of Cl⁻ ions in a solution obtained by mixing 300 mL of 0.3 M NaCl and 200 mL of 0.4 M BaCl₂ is

1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of resultant solution

Vapour pressure of benzene at 30°C is 121.8 mm. When 15 g of a non volatile solute is dissolved in 250 g of benzene, its vapour pressure decreased to 120.2 mm. The molecular weight of the solute (Mo. wt. of solvent = 78)

The Henry's law constant for O₂ dissolved in water is 4.34 × 10⁴ atm at certain temperature. If the partial pressure of O₂ in a gas mixture that is in equilibrium with water is 0.434 atm, what is the mole fraction of O₂ in the solution?

Arrange the following aqueous solutions in the order of their increasing boiling points. (i) 10⁻⁴ M NaCl (ii) 10⁻⁴ M Urea (iii) 10⁻³ M MgCl₂ (iv) 10⁻² M NaCl

The mixture which shows positive deviation from Raoult's law is

Which of the following will have same value of van’t Hoff factor as that of K₄[Fe(CN)₆] ?

The elevation in boiling point of a solution of 9.43 g of MgCl₂ in 1 kg of water is (Kb = 0.52 K kg mol⁻¹, Molar mass of MgCl₂ = 94.3 g mol⁻¹)

Match the column I with column II and mark the appropriate choice.

The mixture that forms maximum boiling azeotrope is

Which of the following will produce a buffer solution when mixed in equal volumes?

5 mL of 1 N HCl, 20 mL of N/2 H₂SO₄ and 30 mL of N/3 HNO₃ are mixed together and volume made to one litre. The normality of the resulting solution is

Which of the following pairs constitutes a buffer?

What will be the mole fraction of ethanol in a sample of spirit containing 85% ethanol by mass?

H₂S is a toxic gas used in qualitative analysis. If solubility of H₂S in water at STP is 0.195 m, what is the value of Kₕ?

Osmotic pressure of a solution containing 2g dissolved protein per 300 cm³ of solution is 20 mm of Hg at 27°C. The molecular mass of protein is :

45 g of ethylene glycol (C₂H₆O₂) is mixed with 600 g of water. The freezing point of the solution is (Kf for water is 1.86 K kg mol⁻¹)

If the concentration of glucose (C₆H₁₂O₆) in blood is 0.9 g L⁻¹, what will be the molarity of glucose in blood?

We have three aqueous solutions of NaCl labelled as 'A', 'B' and 'C' with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van't Hoff factor for these solutions will be in the order

For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?

What are the conditions for an ideal solution which obeys Raoult's law over the entire range of concentration?

What effect does increasing pressure have on the solubility of gases in liquids?

What is the process called when solvent molecules flow through a semipermeable membrane from a pure solvent to a solution?

What is the definition of molality?

What is the approximate mass composition of the azeotrope formed by nitric acid and water?

What is the process called when a solid solute dissolves in a solvent and its concentration increases in the solution?

What happens to the vapour pressure of a solution when a non-volatile solute is added?

What happens to the solubility of gases in a solvent when the pressure over the solution phase is increased?

What is the process called when a bacterium on salted meat loses water and shrivels?

What happens to the experimentally determined molar mass of a solute when it dissociates into ions?

What is the molarity of a solution containing 5 g of NaOH in 450 mL of solution?

What is the relationship between the partial pressure of a volatile component in a solution and its mole fraction according to Raoult's law?

Which of the following statements about solutions and colligative properties is correct?

Which of the following statements about the freezing point of a solution compared to the pure solvent is correct?

Which of the following statements about the vapor pressure and composition of an ideal solution is correct?

Which of the following statements about solutions and their properties is correct?

Which of the following statements regarding colligative properties and freezing point depression is correct?

Which of the following statements regarding colligative properties and the van't Hoff factor is correct?

Which of the following statements about the colligative properties and the behavior of solutions is correct?

Which of the following statements about osmotic pressure and solutions is correct?

Which of the following statements about colligative properties is correct?

Which of the following statements about the behavior of gases and solutions is correct?

Which of the following statements about ideal and non-ideal solutions is correct?

Which of the following statements about colligative properties and solutions is correct?

Which of the following statements about colligative properties and solutions is correct?

Which of the following statements about molarity and molality is correct?

Assertion (A): The boiling point of a solution is higher than that of the pure solvent.

Reason (R): The elevation of boiling point depends on the number of solute molecules rather than their nature.