6
MCQ (Single Correct Answer)
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to ............ .
A
low temperature
B
low atmospheric pressure
C
high atmospheric pressure
D
Both low temperature and high atmospheric pressure
7
MCQ (Single Correct Answer)
Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult's law?
A
Methanol and acetone
B
Chloroform and acetone
C
Nitric acid and water
D
Phenol and aniline
8
MCQ (Single Correct Answer)
Colligative properties depend on ............. .
A
the nature of the solute particles dissolved in solution
B
the number of solute particles in solution
C
the physical properties of the solute particles dissolved in solution
D
the nature of solvent particles
9
MCQ (Single Correct Answer)
Which of the following aqueous solutions should have the highest boiling point?
A
1.0 M NaOH
B
$1.0 \mathrm{~M} \mathrm{~Na}_2 \mathrm{SO}_4$
C
$1.0 \mathrm{~M} \mathrm{~NH}_4 \mathrm{NO}_3$
D
$1.0 \mathrm{~M} \mathrm{~KNO}_3$
10
MCQ (Single Correct Answer)
The unit of ebullioscopic constant is
A
$\mathrm{K} \mathrm{~kg} \mathrm{~mol}^{-1}$ or K (molality) ${ }^{-1}$
B
$\mathrm{mol} \mathrm{~kg} \mathrm{~K}^{-1}$ or $\mathrm{K}^{-1}$ (molality)
C
$\mathrm{kg} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ or $\mathrm{K}^{-1}$ (molality) $)^{-1}$
D
$\mathrm{K} \mathrm{~mol} \mathrm{~kg}^{-1}$ or K (molality)