List of top Questions asked in AP EAPCET- 2023

In a freezing point experiment, aqueous acetic acid solution gave $\Delta T_f$ (observed) = 0.02 K. Calculated $\Delta T_f$ for the same solution was found to be 0.018 K.
What is the van't Hoff factor of acetic acid?

What is the osmotic pressure (in atm) of 0.02M aqueous glucose solution at 300 K? (R=0.082 L atm mol$^{-1} $K$^{-1} $)

The elevation in the boiling point of aqueous urea solution is 0.104 K. What is its $ \Delta T_f $ (in K) value? (for Water $ K_b = 0.52 $ K kg mol$^{-1} $, $ K_f = 1.86 $ K kg mol$^{-1} $)

At 298 K, if the vapour pressure of pure liquids toluene, benzene, chloroform and dichloromethane are 60, 160, 200 and 415 torr respectively. Then which liquid is having high boiling point?

What is the depression of freezing point, when mole fraction of non-electrolyte solute in aqueous solution is 0.01? ($ K_f $ of $ \text{H}_2\text{O} = 1.86 \, \text{K kg mol}^{-1} $)

At 293 K, the Henry law constant in water for N$_2$ and O$_2$ are 76.48 k bar and 34.86 k bar respectively. What is the ratio of mole fractions of N$_2$ and O$_2$ in water? (Assume partial pressures of N$_2$ and O$_2$ same at 293 K)

When $10^{-3} \, M$ solution of glucose in water freezes at -0.0186°C, then at what temperature $10^{-3} \, M$ solution of NaCl will freeze?

What is the van't Hoff factor of Ferric Sulphate (Assume 100% ionization)?

At $T$ (K), 1 mol of benzene is mixed with 1 mol of toluene. The mole fraction of benzene and toluene in its vapour state is respectively
($P^0_{\text{Benzene}} = 160$ torr, $P^0_{\text{Toluene}} = 60$ torr)

Which of the following is an example of a multi molecular colloid?

Identify the correct statement from the following:

The greater the valence of the flocculating ion added, the greater is its power to cause precipitation of a colloid. This rule is:

For the reaction A + B → C, the following data were obtained:

The order of reaction with respect to A and B are respectively

Some statements about Leclanche ll are:
Anode is zinc metal
Cathode is graphite rod surrounded by powdered {MnO2} and carbon
Electrolyte is a moist paste of ZnO and KOH
Oxidation product is ZnO

Consider the following statements for a gold sol: I) It is macromolecular colloid II) It is a lyophobic sol III) It is a negatively charged sol IV) It is a multimolecular colloid V) It is an associated colloid The correct statements are:

The most effective coagulating agent for antimony sulphide sol is:

Match the following

List – I

(Dispersed Phase – Dispersion medium)

A) Solid – Liquid

B) Liquid – Liquid

C) Solid – Gas

D) Liquid – Solid

List – II

(Type of colloid)

I) Gel

II) Aerosol

III) Sol

IV) Emulsion

The correct answer is

$P_4\text{O}_\text{10} \text{H}_2\text{O} \xrightarrow{\text{X}} \xrightarrow{\text{Y}} \text{The number of P-OH, P=O bonds in Y is respectively}$

Conjugate acid and conjugate base of $ HCO_3^- $ are respectively

The nature of CrO$_3$, CrO and Cr$_2$O$_3$ is respectively

The chelating ligand used to remove excess of copper in animal systems is

Observe the following solutions: \[ \text{I. Black coffee} \quad \text{II. 0.2M NaOH} \quad \text{III. Lemon juice} \] \[ \text{IV. Lime water} \quad \text{V. Human Saliva} \quad \text{VI. Tomato juice} \] The number of solutions with pH less than 7 is