List of top Chemistry Questions asked in AP EAPCET

Given equilibrium constants: H$_2$CO$_3$ ⇌ 2H$^+$ + CO$_3^{2–}$, $K = 2 \times 10^{-17}$
H$_2$CO$_3$ ⇌ H$^+$ + HCO$_3^-$, $K = 4 \times 10^{-7}$
Then the equilibrium constant for: HCO$_3^-$ ⇌ H$^+$ + CO$_3^{2–}$ is

Match the following:

Property	Expression
A. π	I. K_b · m
B. ΔT_f	II. K_f · m
C. ΔT_b	III. CST
D. (P⁰ - P) / P⁰	IV. (n₁ / (n₁ + n₂))

The correct increasing order for the wavelengths of absorption in the visible region for the following Co$^{3+}$ complexes is:
(i) [Co(NH$_3$)$_6$]$^{3+}$
(ii) [Co(H$_2$O)$_6$]$^{3+}$
(iii) [Co(en)$_3$]$^{3+}$

Given below are two statements
Assertion (A): Ethylamine is stronger base than ammonia
Reason (R): It is due to $-$I effect of ethyl group
The correct answer is

Jones reagent is used in which of the following conversions?

What is the major product formed in the reaction given below?

Which of the following exhibits optical isomerism?

Match the following
List – I (Source) List – II (Carboxylic Acid)

Source	Carboxylic Acid
A. Vinegar	I. HCOOH
B. Butter	II. CH₃CH₂COOH
C. Ants	III. CH₃COOH
	IV. CH₃CH₂CH₂COOH

What is the intermediate in the following reaction?
RCN + SnCl$_2$ + HCl $\longrightarrow$ RCHO

Which of the following is/are correct?
i. Cr$_2$O$_3$ is an acidic oxide
ii. Mo(VI) and W(VI) are more stable than Cr(VI)
iii. All Cu(II) halides are known except iodide
iv. The E$^\circ$ value for Cr$^{3+}$/Cr$^{2+}$ is much more positive than Mn$^{3+}$/Mn$^{2+}$

Which of the following drug is used on diseased skin surface?

Nucleotides in RNA are joined by which of the following phosphodiester linkages?

A vitamin (X) is water soluble but can be stored in the body. Deficiency of X causes which disease?

A polymer sample contains 5 molecules of molar mass 1000, 3 molecules of molar mass 500 and 2 molecules of molar mass 250. What is its weight average molecular weight (Mw)?

In which of the following reactions phosphine is not formed?

Identify the correct statements about order of reaction:
I) It is equal to the sum of the powers of concentration terms in rate equation
II) It is always a whole number
III) It is determined experimentally
IV) It is not applicable for complex reactions

At T(K), the electrode potential of A$^{2+}$(X M)$|$A(s) is –0.2285 V. Given $E^\circ_{A^{2+}/A} = -0.14$ V, the value of X in mol L$^{-1}$ is:

1.06 g of Na$_2$CO$_3$ (molar mass = 106 g mol$^{-1}$) is dissolved in 500 g water. What is its molality?

Identify the macromolecular colloids from the list given below:
I. Synthetic rubber II. Rhombic sulphur III. Sodium stearate
IV. Cellulose V. Enzymes VI. Sodium lauryl sulphate

5.0 mL of [AgI] / Ag$^+$ sol is coagulated by the addition of 15 mL of 0.001 M potassium iodide solution. The flocculation value of potassium iodide is

The sulphide ore of copper containing iron as impurity is removed in the form of a slag by adding an oxide of element X. Identify the element X.

The correct order of atomic radii of Al, Ga, In, Tl is

In aqueous solutions, the strongest reducing agents in Group 1 and Group 2 elements of the periodic table respectively are

Match the following:

Compound	Reaction Type
A. CH₂=CH₂	I. Electrophilic substitution reaction
B. CH₃COOCH₃	II. Nucleophilic substitution reaction
C. C₆H₆	III. Electrophilic addition reaction
D. CH₃Cl	IV. Nucleophilic addition reaction

The decreasing order of p$K_b$ of the following aromatic amines is