List of top Questions asked in AP EAPCET

At 300 K, the total pressure of the following system is 2 atm, at equilibrium: \[ \text{A}_2(g) \rightleftharpoons 2\text{A}(g) \] The atoms of A occupy 20% volume at STP. The \(K_c\) of the system is approximately (Given: R = 0.082 L atm mol\(^{-1}\) K\(^{-1}\), STP volume of 1 mole of a gas = 22.7 L)

Among the following, the molecular hydride is:

Among the following, the correct statements are
I. Lithium forms solid hydrogen carbonate
II. LiCl is soluble in ethanol
III. The formula of lithium oxide is LiO
IV. Lithium hydroxide decomposes on heating

Among the following, which statement is not correct?

Among the following, the correct statements are
I. CCl\(_4\) is an electron-precise molecule
II. SnF\(_4\), PbF\(_4\) are ionic in nature
III. All tetrahalides of group 14 elements are easily hydrolyzed
IV. PbO, PbO\(_2\) are amphoteric in nature

The number of alkenes that exhibit cis/trans isomerism with the molecular formula C\(_5\)H\(_{10}\) is:

The ratio of sp\(^3\), sp\(^2\) and sp hybridized carbons present in CH\(_3\)-CH = CH-CN is:

Which of the following arrangement of magnetic moment is correct for ferrimagnetic substance?

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?

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)

Observe the following half cell reactions and choose the correct options
(I) 2H2O(l) → O2(g)+4H+ +4e− E0 = 1.23V
(II) H+(aq) + e− → 1/2 H2(g) E0 = 0.00V
(III) 2SO4^2− (aq) → S2O8^2− (aq)+2e− E0 = −1.96V
(a) In dilute H2SO4 solution, H+ ions are reduced at cathode.
(b) In concentrated H2SO4 solution, water is oxidized at anode.
(c) In dilute H2SO4 solution, water is oxidized at anode.
(d) In dilute H2SO4 solution, SO4^2− ions are oxidized at anode.

If the time required for 40% completion of a first order reaction is 50 minutes, what is the time required for completion of 80% of the same reaction?
(\( \log 2 = 0.3010, \log 5 = 0.6990, \log 6 = 0.7782 \))

Given below are two statements
Assertion (A): A catalyst generally increases the rate of a reaction
Reason (R): It lowers the activation energy of a reaction by providing a new path

The catalyst, promoter, and poison for Haber's process are respectively

Sphalerite is the ore of metal \( M_1 \) and malachite is the ore of metal \( M_2 \). Atomic numbers of \( M_1 \) and \( M_2 \) are respectively

Find A and B

The decomposition products of [FeO$_4$]$^{2-}$ are:

Which of the following ions has [Xe] 4f$^7$ 6s$^0$ as outer electronic configuration?

Buna–N is a polymer of:

Given below are two statements
Assertion (A): Hydrolysis of sucrose results in change in the optical rotation from dextro (+) to laevo (–)
Reason (R): Both the products from the hydrolysis are leavorotatory

In amylopectin, branching occurs by which of the glycosidic linkage?

Low levels of which of the following chemical substances cause depression?

The optical rotation of a racemic mixture of 2-methyl 1-butanol is:

What is ‘X’ in the following reaction?
2–Bromo–2–methyl butane $\xrightarrow{X}$ 2–methyl–2–butanol

What are ‘X’ and ‘Y’ in the following reactions?
Acetal $\xrightarrow{X}$ CH$_3$COCH$_3$ $\xrightarrow{Y}$ Oxime