Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
The molal freezing point constant for water is 1.86 °C/m. Therefore, the freezing point of 0.1 m NaCl solution in water is expected to be:
Which of the following pair of aqueous solutions will have the same value of osmotic pressure? (Assume complete dissociation in aqueous solution)
The correct statement for a reversible process in a state of equilibrium is:
<p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">In an experiment, the percentage of error</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">occurred in the measurement of physical</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">quantities $A$, $B$, $C$ and $D$ are $1\%$, $2\%$, $3\%$ and $4\%$</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">respectively. Then the maximum percentage of</p> $$X = \frac{A^2 B^{1/2}}{C^{1/3} D^3}$$ <p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">error in the measurement $X$ will be</p>
The biodegradable polymer is:
A 0.1 molal aqueous solution of a weak acid (HA) is 30% ionized. If $K_f$ for water is 1.86 °C/m, the freezing point of the solution will be:
Ray florets have
The stage during which separation of the paired homologous chromosomes begins is
The temperature dependent term among the following is:
What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
Assuming complete ionisation, same moles of which of the following compounds will require the least amount of acidified $\text{KMnO}_4$ for complete oxidation?
The structure of intermediate A in the following reaction, is
Which one of the following electrolytes has the same value of van't Hoff's factor ($i$) as that of $\text{Al}_2(\text{SO}_4)_3$ (if all are $100\%$ ionised)?
Which of the following pairs of gases is mainly responsible for green house effect? (1) Ozone and Ammonia (2) Oxygen and Nitrogen (3) Nitrogen and Sulphur dioxide (4) Carbon dioxide and Methane
A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to
Zr ($Z = 40$) and Hf ($Z = 72$) have similar atomic and ionic radii because of:
In gel electrophoresis, separated DNA fragments can be visualized with the help of
When 5 g of non-volatile non-electrolyte solute is dissolved in 100 g of a certain solvent, the freezing point of the solvent decreases by 0.25 K. The molar mass of the solute is: [$K_f$ of the given solvent = $1.2 \text{ K kg mol}^{-1}$]
Which of the following aqueous solutions of electrolytes will exhibit the least elevation in boiling point?
The vapour pressure of a solvent decreases by 10 mm Hg when a non-volatile solute is added to the solvent. The mole fraction of the solute in the solution is 0.2. What would be the mole fraction of the solvent if the decrease in vapour pressure is to be 20 mm Hg?