List of top Chemistry Questions asked in AP EAPCET

Consider the following
Assertion (A): Dipole moment of NF$_3$ is lesser than NH$_3$
Reason (R): In NF$_3$, the orbital dipole due to lone pair of electrons is in the opposite direction to the resultant dipole moment of the three N-F bonds.
The correct answer is:

The correct order of increasing bond lengths of C--H, O--H, C--C, and H--H is

Identify the pair of molecules which have the same hybridisation as the hybridisation in Xenon (II) fluoride.

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$_2$

Which of the following compounds contains both ionic and covalent bonds?

The pairs of compounds which have the same molecular geometry are
I) BF\textsubscript{3}, BrF\textsubscript{3}
II) XeF\textsubscript{2}, BeCl\textsubscript{2}
III) BCl\textsubscript{3}, PCl\textsubscript{3}
IV) PCl\textsubscript{3}, NCl\textsubscript{3}

How many of the following molecules / ions have a trigonal planar structure?
$ \text{BO}_3^{3-}, \, \text{NH}_3, \, \text{PCl}_3, \, \text{BCl}_3, \, \text{ClF}_3, \, \text{XeO}_3 $

Which of the following statements are correct regarding lithium and magnesium?
I) They react slowly with water
II) Their bicarbonates are solids
III) Their chlorides are not soluble in ethanol
IV) Their nitrates decompose easily on heating

Identify the correct set of molecules with zero dipole moment.

Consider the following changes I and II
Change I: ${O2 → O2^{2-}}$
Change II: ${O2 → O2^{-}}$
The correct statements about these changes (I) and (II) in accordance with MO theory are

The pair of molecules / ions with the same bond order value is

Consider the following Statement-I: Alkali metals dissolve in liquid ammonia and form deep blue solutions.
Statement-II: The order of melting and boiling points of alkali metal halides follow the trend:
Fluoride< chloride< bromide< iodide.

A molecule has a T-shape. The total number of electron pairs in the valence shell of its central atom is:

In which of the following reactions $ \text{B}_2\text{O}_3 $ is not formed?

At 25$^\circ$C, the percentage of ionization of 'x' M acetic acid is 4.242. What is the value of x? $(K_a = 1.8 \times 10^{-5})$

The electronic configurations of four elements A, B, C, D are given below:
(A) 1s22s22p63s1
(B) 1s22s22p63s23p1
(C) 1s22s22p63s2
(D) 1s22s22p63s23p2

Match the following pollutant concentration limits in water with their effects: