Solutions — practice questions
114 curated practice questions from Solutions (Chemistry Class 12, CBSE) — 111 easy, 3 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) Ethyl alcohol + Water (i) p^…
- Helium is added to oxygen used by deep sea divers because
- How much oxygen is dissolved in 100 mL water at 298 K if partial pressure of oxygen is 0.5 atm and K H = 1.4 × 10 –3…
- For which of the following solutes the van’t Hoff factor is not greater than one?
- A 5% solution ( w / W ) of cane sugar (molar mass = 342 g mol –1 ) has freezing point 271 K. What will be the freezing…
- Study the following figure showing osmosis and mark the correct statement.
- If 1 g of solute (molar mass = 50 g mol –1 ) is dissolved in 50 g of solvent and the elevation in boiling point is 1 K…
- 3 moles of P and 2 moles of Q are mixed, what will be their total vapour pressure in the solution if their partial…
- Which one of the following units is useful in relating vapour pressure with the concentration of the solution?
- An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the…
- For carrying reverse osmosis for desalination of water the material used for making semipermeable membrane is
- The van’t Hoff factor of 0.005 M aqueous solution of KCl is 1.95. The degree of ionisation of KCl is
- Fill in the blanks with appropriate words. Azeotropic mixtures boil without change in their _____. Azeotropic mixtures…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- At high altitude the partial pressure of oxygen is less than that at the ground level. This leads to
- An element crystallises in a structure having a fcc unit cell of an edge 200 pm. If 200 g of this element contains 24…
- Consider the two figures given below. Which of the following statements regarding the experiment is true?
- Osmotic pressure is widely used to determine molar masses of proteins and polymers. Two solutions having same osmotic…
- What is the molarity of a solution containing 10 g of NaOH in 500 mL of solution?
- In ccp arrangement the pattern of successive layers can be designated as
- When acetone and chloroform are mixed together, hydrogen bonds are formed between them. Which of the following…
- What amount of CaCl 2 ( i = 2.47) is dissolved in 2 litres of water so that its osmotic pressure is 0.5 atm at 27°C?
- What will be the mole fraction of ethanol in a sample of spirit containing 85% ethanol by mass?
- A solution is made by adding certain amount of solute X in water. Addition of a small amount of X in the solution…
- 2 g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the…
- Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical…
- Henry’s law constant for molality of methane in benzene at 298 K is 4.27 × 10 5 mm Hg. The mole fraction of methane in…
- A solute X when dissolved in a solvent associates to form a pentamer. The value of van’t Hoff factor ( i ) for the…
- 10% solution of urea is isotonic with 6% solution of a non-volatile solute X . What is the molecular mass of solute X ?
- Relative lowering of vapour pressure, osmotic pressure of a solution and elevation in boiling points are __( p )___…
- Which of the following about the above structure is not correct?
- How many grams of NaOH are present in 250 mL of 0.5 M NaOH solution?
- What will be the molality of a solution of glucose in water which is 10% w / W ?
- In three beakers labelled as ( A ), ( B ) and ( C ), 100 mL of water, 100 mL of 1 M solution of glucose in water and…
- A solution of glucose in water is labelled as 10 per cent ( w / W ). What will be the molality of the solution?
- Match the column I with column II and mark the appropriate choice. Column I (Structure) Column II (Packing efficiency)…
- A unit cell of sodium chloride has four formula units. The edge length of unit cell is 0.564 nm. What is the density of…
- H 2 S is a toxic gas used in qualitative analysis. If solubility of H 2 S in water at STP is 0.195 m, what is the value…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- A solution is made by dissolving 20 g of a substance in 500 mL of water. Its osmotic pressure was found to be 600 mm of…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- It is recommended that ammonia bottle should be opened after cooling in ice for some time because
- A solution containing 12.5 g of non-electrolyte substance in 185 g of water shows boiling point elevation of 0.80 K…
- Vapour pressure of a pure liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1 g of Y in 20 g of liquid X…
- An element with atomic mass 100 has a bcc structure and edge length 400 pm. The density of element is
- When 1.04 g of BaCl 2 is present in 10 5 g of solution the concentration of solution is
- Which of the following is not an industrial or biological importance of osmosis?
- Study the figure of a solid given below depicting the arrangement of particles. Which is the most appropriate term used…
- Osmotic pressure is widely used to determine molar masses of proteins and polymers. Two solutions having same osmotic…
- A solution is obtained by mixing 200 g of 30% and 300 g of 20% solution by weight. What is the percentage of solute in…
- What will be the freezing point of a 0.5 m KCl solution? The molal freezing point constant of water is 1.86° C m –1 .
- The relative lowering in vapour pressure is proportional to the ratio of number of
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) D H mix = 0, D V mix = 0 (i)…
- Distance between body centred atom and a corner atom in sodium (a = 4.225 A ^ o ) is
- Which of the following statements is not true about the voids?
- Express the terms representing the following formulae. (i) (ii) (iii) No. of moles of component Moles in the solution…
- Which of the following solutions shows positive deviation from Raoult’s law?
- Which of the following statements is correct about diffusion and osmosis? (i) In osmosis, a semipermeable membrane is…
- A solution containing 10.2 g glycerine per litre is isotonic with a 2% solution of glucose. What is the molecular mass…
- What will be the degree of dissociation of 0.1 M Mg(NO 3 ) 2 solution if van’t Hoff factor is 2.74?
- Which of the following relations is not correctly matched with the formula?
- Given below are few mixtures formed by mixing two components. Which of the following binary mixtures will have same…
- According to Henry’s law ‘the partial pressure of the gas in vapour phase ( p ) is proportional to the mole fraction of…
- 250 mL of sodium carbonate solution contains 2.65 g of Na 2 CO 3 . If 10 mL of this solution is diluted to 500 mL, the…
- Concentration terms like mass percentage, ppm, mole fraction and molality do not depend on temperature. However…
- Intermolecular forces between n -hexane and n -heptane are nearly same as between hexane and heptane individually. When…
- What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10°C? ( K f = 1.86° C…
- Solubility of a substance is its maximum amount that can be dissolved in a specified amount of solvent. It depends upon…
- What are the conditions for an ideal solution which obeys Raoult’s law over the entire range of concentration?
- Which of the following azeotropes is not correctly matched?
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) K b (i) mol kg –1 (B) m (ii)…
- What is the mole fraction of glucose in 10% w / W glucose solution?
- What is the mass percentage of carbon tetrachloride if 22 g of benzene is dissolved in 122 g of carbon tetrachloride?
- What will be the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar…
- Which of the following solutions is an example of negative deviation from Raoult’s law?
- The given graph shows the vapour pressure-temperature curves for some liquids. Liquids A , B , C and D respectively are
- Grapes placed in three beakers X , Y and Z containing different type of solutions are shown in figures. If beaker X…
- The elevation in boiling point of a solution of 9.43 g of MgCl 2 in 1 kg of water is ( K b = 0.52 K kg mol –1 , Molar…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- During dissolution when solute is added to the solution, some solute particles separate out from the solution as a…
- Osmotic pressure is widely used to determine molar masses of proteins and polymers. Two solutions having same osmotic…
- Among the following substances the lowest vapour pressure is exerted by
- Osmotic pressure of a solution containing 2 g dissolved protein per 300 cm 3 of solution in 20 mm of Hg at 27°C. The…
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) i (i) (B) p° – p s (ii) van’t…
- Sodium has body-centered packing. If the distance between two nearest atoms is 3.7 A ^ o , then lattice parameter is
- Osmotic pressure is widely used to determine molar masses of proteins and polymers. Two solutions having same osmotic…
- In the following figure the blank X in known as ________________ and why?
- Which of the following has the highest freezing point?
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) K b (i) K_ b W_ 2 1000 T_ b…
- Two liquids HNO 3 ( A ) and water ( B ) form a maximum boiling azeotrope when mixed in the ratio of 68% and 32%…
- Which of the following will have same value of van’t Hoff factor as that of K 4 [Fe(CN) 6 ]?
- The osmotic pressure of a solution can be increased by
- A metal crystallises into a lattice containing a sequence of layers as AB AB AB ............ . What percentage of voids…
- Sprinkling of salt helps in clearing the snow covered roads in hills. The phenomenon involved in the process is
- What is the mass of urea required for making 2.5 kg of 0.25 molal aqueous solution?
- If the radius of an octahedral void is r and radius of atoms in close packing is R , the relation between r and R is
- The natural boron of atomic weight 10.81 is found to have two isotopes 10 B and 11 B . The ratio of abundance of…
- Ionic solids conduct electricity in molten state but not in solid state because
- How many Na + ions are present in 100 mL of 0.25 M of NaCl solution?
- Examples of few solids are given below. Find out the example which is not correctly matched.
- When a gas is bubbled through water at 298 K, a very dilute solution of gas is obtained. Henry’s law constant for the…
- Why is the molecular mass determined by measuring colligative property in case of some solutes is abnormal?
- Which of the following representations of i (van’t Hoff factor) is not correct?
- The value of Henry’s law constant for some gases at 293 K is given below. Arrange the gases in the increasing order of…
- In the graph plotted between vapour pressure ( V . P .) and temperature (Δ T ),
- 0.001 molal solution of [Pt(NH 3 ) 4 Cl 4 ] in water had a freezing point depression of 0.0054°C. If K f for water is…
- In the given graph, pq , qr and st represent
- What will be the molarity of 30 mL of 0.5 M H 2 SO 4 solution diluted to 500 mL?
- When acetone and chloroform are mixed together, which of the following observations is correct?
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- The law which indicates the relationship between solubility of a gas in liquid and pressure is ________ .
- The cations and anions are arranged in alternate form in
- Two solutions of X and Y electrolytes are taken in two beakers and diluted by adding 500 mL of water. L m of X…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…