List of top Chemistry Questions asked in AP EAPCET

The resistance of a conductivity cell filled with 0.1 M KCl solution is $100 \, \Omega$. If the resistance of the same cell when filled with 0.02 M KCl solution is $520 \, \Omega$, the molar conductivity of 0.02 M solution (in S cm$^2$ mol$^{-1}$) is (Given: conductivity of 0.1 M KCl solution = $1.29 \, \text{S m}^{-1}$)

Ammonium chloride on reaction with calcium hydroxide gives a gas X. The incorrect statement about X is

Choose the incorrect statement from the following:

The synthetic detergents of the following are

At $T(K)$, the vapor pressure of water is $x$ kPa. What is the vapor pressure (in kPa) of 1 molal solution containing non-volatile solute?

The number of molecules having lone pair of electrons on central atom in the following is: BF$_3$, SF$_4$, SiCl$_4$, XeF$_4$, NCl$_3$, XeF$_6$, PCl$_5$, HgCl$_2$, SnCl$_2$

For a first-order reaction, the rate constant $ k $ is $ 1.386 \times 10^{-3} \, \text{s}^{-1} $. What is the half-life $ t_{1/2} $ of the reaction? (Use $ \ln 2 = 0.693 $)

The radius of fourth orbit in $ He^+ $ ion is $ R_1 $ pm and radius of third orbit in $ Li^{2+} $ ion is $ R_2 $ pm. The value of $ (R_1 - R_2) $ in pm is:

In which of the following intramolecular H-bonding is absent?
Options:
- Salicylic acid
- Salicylaldehyde
- Quinol
- Catechol

Match the following:

Match the following List-I (Type of reaction) \hspace{1cm List-II (Final product)

Sucrose when boiled with dilute HCl gives two functional isomers X and Y. X gives monocarboxylic acid with bromine water but not Y. The number of --OH groups in cyclic structure of X is

Electrolysis of aqueous solution of potassium acetate gives an alkane (x) and ${CO}_2$ (y) at anode. The volume ratio of these two gases $x$ and $y$ at STP is respectively:

Among $ \text{B}_2\text{O}_3 $, $ \text{Al}_2\text{O}_3 $, and $ \text{In}_2\text{O}_3 $, the oxides which react with alkalies are:

An alcohol X $\mathrm{C_5H_{12}O}$ on dehydration gives Y (major product). Reaction of Y with HBr gave Z ($\mathrm{C_5H_{11}Br}$, major product). Z undergoes nucleophilic substitution in two steps. What are X and Y?

What are X and Y respectively in the following reaction sequence? ($anhy = \text{anhydrous}$) \[ \text{C}_6\text{H}_5\text{N}_2^+\text{X}^- \xrightarrow{\text{C}_2\text{H}_5\text{OH}} \text{X} \xrightarrow{\text{CO, HCl, anhy. AlCl}_3} \text{Y} \] % The question implies the first X is an anion, the second X is an organic product. Let's call the organic product P1 to avoid confusion. % So, C6H5N2+Anion- → P1 → Y

How many molecules are present in 4.4 grams of CO$_2$?
(Molar mass of CO$_2$ = 44 g/mol, Avogadro's number = $6.022 \times 10^{23}$)

Consider the following
Statement-I: Kolbe's electrolysis of sodium propionate gives n-hexane as product.
Statement-II: In Kolbe's process, CO$_2$ is liberated at anode and H$_2$ is liberated at cathode.

Consider the following:
Statement-I: Both BeSO$_4$ and MgSO$_4$ are readily soluble in water.
Statement-II: Among the nitrates of alkaline earth metals, only Be(NO$_3$)$_2$ on strong heating gives its oxide, NO$_2$, and O$_2$.
The correct answer is