Question 11 Mark
The compound with maximum value of van't Hoff factor (i) for complete dissociation of solute in aqueous solution is ;
Answer
View full question & answer→(C) $K _2 SO _4$
Questions
M.C.Q (1 Marks)
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34 questions · self-marked practice — reveal the answer and mark yourself.
Question 21 Mark
Which of the following solutions of KCl will have the highest value of molar conductivity?
Answer
View full question & answer→(B) 1 M
Question 31 Mark
The boiling point of an atomic mixture of two liquids when it :
Answer
View full question & answer→(C) shows positive deviation from Racult's law
Question 41 Mark
In which of the following mixtures dipole-dipole attraction is mainly found?
Answer
View full question & answer→(D)
Question 51 Mark
Which formula is not correct for van't Hoff factor?
Answer
View full question & answer→(D)$i=\frac{\text { Observed molecular weight }}{\text { Calculated molecular weight }}$
Question 61 Mark
If 2 g NaOH is mixed in 250 gram of water, then the concentration of the solution will be:
Answer
View full question & answer→(C) 0.2 m
Question 71 Mark
What will be the molarity of 450 ml solution of 5 gm NaOH ?
Answer
View full question & answer→(B) $0.278 mol dm ^{-3}$
Question 81 Mark
Semipermeable membrane allows :
Answer
View full question & answer→(C) the solvent to pass through
Question 91 Mark
The elevation in boiling point of an aqueous solution of urea is $0.52^{\circ}\left[ K _{ b }=0.52^{\circ} C mol ^{-1}\right]$. So what will be the mole fraction of urea in this?
Answer
View full question & answer→(D) 0.018
Question 101 Mark
When the electrolyte dissociates in the solution, then what will be the value of its van't Hoff factor?
Answer
View full question & answer→(A) $>1$
Question 111 Mark
Which medium of expression of concentration is independent of temperature?
Answer
View full question & answer→(D) Molality
Question 121 Mark
If a solution of $5 \%$ glucose (molecular weight 180) and a solution of $10 \%$ unknown substance are isosmotic at the same temperature then the molecular weight of unknown substance is:
Answer
View full question & answer→(C) 360
Question 131 Mark
Which of the following pairs of liquid is governed by Racult's law?
Answer
View full question & answer→(B) Benzenc-methanol
Question 141 Mark
The value of freczing point of an aquecus solution is $0.186^{\circ} C$, the corresponding solution's boiling point is $\left( K _{ f }=1.86^{\circ} C mol ^{-1} kg\right)\left( K _{ b }=0.512^{\circ} C \right.$ $\left.mol ^{-1} kg\right):$
Answer
View full question & answer→(B) $0.0512^{\circ} C$
Question 151 Mark
What is the molarity of pure water?
Answer
View full question & answer→(B) 55.5
Question 161 Mark
In which of the following units the concentration of solution does not depend on temperature?
Answer
View full question & answer→(D) Molality
Question 171 Mark
Which of the following is a molecular property?
Answer
View full question & answer→(C) Osmotic pressure
Question 181 Mark
Soda water is :
Answer
View full question & answer→(B) Solution of $CO _2$ gas in water
Question 191 Mark
Which of the following condition is true for an ideal solution?
Answer
View full question & answer→(D) $\Delta V _{\text {mixture }}=0$
Question 201 Mark
The ratio of freezing point depression of aqucous solution of $0.1 M KCl , 0.1 M CaSO _4$ and 0.1 M $K _2 CO _3$ will be :
Answer
View full question & answer→(C) $1: 1: 1.5$
Question 211 Mark
What will be a one molar solution of $H _2 SO _4$ be similiar to?
Answer
View full question & answer→(C) 2 N solution
Question 221 Mark
Which of the following pairs does not form an ideal solution?
Answer
View full question & answer→(B) $C _2 H _5, C _2 H _5 OH$
Question 231 Mark
The misture of benzene and toluene is :
Answer
View full question & answer→(C) Ideal solution
Question 241 Mark
Which of the following properties is not a molecular property?
Answer
View full question & answer→(D) Freezing point
Question 251 Mark
The solution of two liquids which is distilled at a constant temperature without change in composition is called :
Answer
View full question & answer→(C) steady state mixture
Question 261 Mark
Solutions with equal osmotic pressure are called :
Answer
View full question & answer→(C) isomotic solution
Question 271 Mark
The pressure used to stop the process of osmosis is called :
Answer
View full question & answer→(C) Osmotic pressure
Question 281 Mark
Which of the following will have the highest boiling point at one atmospheric pressure?
Answer
View full question & answer→(C) 0.1 M barium chloride
Question 291 Mark
The osmotic pressure of the fluid present in blood cells is equal to which of the following?
Answer
View full question & answer→(B) $0.9 \%(w / V) NaCl$ solution
Question 301 Mark
How many types of solution are possible in nature?
Answer
View full question & answer→(D) 9
Question 311 Mark
What is the semipermeable membrane used for reverse osmosis made of?
Answer
View full question & answer→(C) Cellulose acetate
Question 321 Mark
The following number of moles of solute present per kilogram of solvent is called :
Answer
View full question & answer→(C) Molality
Question 331 Mark
For which of the following the value of van't Hoff factor will be equal to the van't Hoff factor for $K _4\left[ Fe ( CN )_6\right]$ :
Answer
View full question & answer→(C) $Al _2\left( SO _4\right)_3$
Question 341 Mark
Which of the following solutions will have minimum osmotic pressure?
Answer
View full question & answer→(B) 0.1 M Urea