Chemical Bonding and Molecular Structure · Chemistry · AP EAPCET

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MCQ (Single Correct Answer)

1
The correct order of covalent bond character of $\mathrm{BCl}_3, \mathrm{CCl}_4, \mathrm{BeCl}_2, \mathrm{LiCl}$ is
AP EAPCET 2024 - 21th May Evening Shift
2
In which of the following pairs, both molecules possess dipole moment?
AP EAPCET 2024 - 21th May Evening Shift
3

Which of the following orders are correct regarding their covalent character?

(i) $\mathrm{KF}<\mathrm{KI}$

(ii) $\mathrm{LiF}<\mathrm{KF}$

(iii) $\mathrm{SnCl}_2<\mathrm{SnCl}_4$

(iv) $\mathrm{NaCl}<\mathrm{CuCl}$

The correct option is

AP EAPCET 2024 - 21th May Morning Shift
4

$$ \text { Observe the following sets. } $$

$$ \begin{array}{lll} \hline \text { Order } & \text { Property } \\ \hline \text { (i) } \mathrm{NH}_3>\mathrm{H}_2 \mathrm{O}>\mathrm{SO}_2 & \text { Bond angle } \\ \hline \text { (ii) } \mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3>\mathrm{H}_2 \mathrm{~S} & \text { Dipole moment } \\ \text { (iii) } \mathrm{N}_2>\mathrm{O}_2>\mathrm{H}_2 & \text { Bond enthalpy } \\ \hline \text { (iv) } \mathrm{NO}^{+}>\mathrm{O}_2>\mathrm{O}_2^{2-} & \text { Bond order } \\ \hline \end{array} $$

AP EAPCET 2024 - 21th May Morning Shift
5
Observe the following reactions. Identify the reaction in which the hybridisation of underlined atom is changed
AP EAPCET 2024 - 20th May Evening Shift
6
Among the following species, correct set of isostructural pairs are $\mathrm{XeO}_3, \mathrm{CO}_3^{2-}, \mathrm{SO}_3, \mathrm{H}_3 \mathrm{O}^{+}, \mathrm{ClF}_3$
AP EAPCET 2024 - 20th May Evening Shift
7
The correct order of bond angles of the molecules $\mathrm{SiCl}_4, \mathrm{SO}_3, \mathrm{NH}_3, \mathrm{HgCl}_2$ is
AP EAPCET 2024 - 20th May Morning Shift
8

$$ \text { Observe the following structure, } $$

AP EAPCET 2024 - 20th May Morning Shift Chemistry - Chemical Bonding and Molecular Structure Question 7 English

$$ \text { The formal charges on the atoms 1,2,3 respectively are } $$

AP EAPCET 2024 - 20th May Morning Shift
9
The bond angles $b_1, b_2$ and $b_3$ in the given structure are respectively (in ${ }^{\circ}$ ) AP EAPCET 2024 - 20th May Morning Shift Chemistry - Chemical Bonding and Molecular Structure Question 9 English
AP EAPCET 2024 - 20th May Morning Shift
10
In which of the following sets of molecules, the centil atoms of molecules have same hybridisation?
AP EAPCET 2024 - 19th May Evening Shift
11
The correct increasing order of number of lone pair of electrons on the central atom of $\mathrm{SnCl}_2, \mathrm{XeF}_2, \mathrm{CIF}_3$ and $\mathrm{SO}_3$ is
AP EAPCET 2024 - 19th May Evening Shift
12
The bond lengths of diatomic molecules of elements $X$, $Y$ and $Z$ respectively are 143, 110 and 121 pm . The atomic numbers of $X, Y$, and $Z$ respectively are
AP EAPCET 2024 - 18th May Morning Shift
13
The correct formula used to determine the formal charge (Q) on an atom in the given Lewis structure of a molecule or ion is ( $V=$ number of valence electrons in free atom, $U=$ number of unshared electrons on the atom, $B=$ number of bonds around the atom)
AP EAPCET 2024 - 18th May Morning Shift
14
Match the following.
List - I
(Bond )
List - II
(Bond enthalpy (in $\mathrm{kJ} \mathrm{mol}^{-1}$ )
A $\mathrm{Si}-\mathrm{Si}$ I 240
B $\mathrm{C}-\mathrm{C}$ II 297
C $\mathrm{Sn}-\mathrm{Sn}$ III 348
D $\mathrm{Ge}-\mathrm{Ge}$ IV 248
The correct answer is
AP EAPCET 2024 - 18th May Morning Shift
15

In the Lewis dot structure of carbonate ion shown under the formal charges on the oxygen atoms 1, 2 and 3 are respectively

AP EAPCET 2022 - 5th July Morning Shift Chemistry - Chemical Bonding and Molecular Structure Question 15 English

AP EAPCET 2022 - 5th July Morning Shift
16

The set of species having only fractional bond order values is

AP EAPCET 2022 - 5th July Morning Shift
17

The set of molecules in which the central atom is not obeying the octet rule is

AP EAPCET 2022 - 4th July Evening Shift
18

The formal charges of atoms (1), (2) and (3) in the ion AP EAPCET 2022 - 4th July Evening Shift Chemistry - Chemical Bonding and Molecular Structure Question 17 English is

AP EAPCET 2022 - 4th July Evening Shift
19

The hybridisations of carbon in graphite, diamond and $$\mathrm{C}_{60}$$ are respectively

AP EAPCET 2022 - 4th July Evening Shift
20

Choose the correct option from the following.

AP EAPCET 2022 - 4th July Morning Shift
21

The bond lengths of $$\mathrm{C}_2, \mathrm{~N}_2$$ and $$\mathrm{B}_2$$ molecules are $$X_1, X_2$$ and $$X_3 \mathrm{~pm}$$ respectively. The correct order of their bond lengths is

AP EAPCET 2022 - 4th July Morning Shift
22

The correct order of electronegativity of carbon in various hybridisation states is

AP EAPCET 2021 - 20th August Morning Shift
23

Bond order is an inverse measure of

AP EAPCET 2021 - 20th August Morning Shift
24

Which of the following molecule has the maximum dipole moment?

AP EAPCET 2021 - 20th August Morning Shift
25

Which compound among the following will have a permanent dipole moment?

AP EAPCET 2021 - 20th August Morning Shift Chemistry - Chemical Bonding and Molecular Structure Question 22 English

AP EAPCET 2021 - 20th August Morning Shift
26

The correct order of sulphur-oxygen bond in $$\mathrm{SO}_3, \mathrm{~S}_2 \mathrm{O}_3^{2-}$$ and $$\mathrm{SO}_4^{2-}$$ is

AP EAPCET 2021 - 20th August Morning Shift
27

Which compound among the following has the highest dipole moment?

AP EAPCET 2021 - 19th August Evening Shift
28

How many among the given species have a bond order of 0.5 ?

$$\mathrm{H}_2^{+}, \mathrm{He}_2^{+}, \mathrm{He}_2^{-}, \mathrm{B}_2^{+}, \mathrm{F}_2^{-}, \mathrm{Be}_2^{2-}$$

AP EAPCET 2021 - 19th August Evening Shift
29

Match the following.

Molecule Geometry
(A) $$\mathrm{SnCl_2}$$ 1. Angular (or) bent
(B) $$\mathrm{XeF_4}$$ 2. See-saw
(C) $$\mathrm{CIF_3}$$ 3. Square pyramidal
(D) $$\mathrm{IF_5}$$ 4. T-shape
5. Square planar

AP EAPCET 2021 - 19th August Evening Shift
30

The structure of diborane B$$_2$$H$$_6$$ is given below. Identify the bond angles of x and y. In diborane, ........... are commonly known as banana-bonds.

AP EAPCET 2021 - 19th August Evening Shift Chemistry - Chemical Bonding and Molecular Structure Question 29 English

AP EAPCET 2021 - 19th August Evening Shift
31

The incorrect statement(s) among the following is/are

AP EAPCET 2021 - 19th August Evening Shift
32

Due to $$p \pi-p \pi$$ bonding interactions, nitrogen for $$\mathrm{N}_2$$. But phosphorus forms .................. and does not form a diatomic molecule.

AP EAPCET 2021 - 19th August Evening Shift
33

Identify the incorrect statements among the following?

(i) $$\mathrm{SF}_6$$ does not react with water.

(ii) $$\mathrm{SF}_6$$ is $$s p^3 d$$ hybridised.

(iii) $$\mathrm{S}_2 \mathrm{O}_3^{2-}$$ is a linear ion.

(iv) There is no $$\pi$$-bonding in $$\mathrm{SO}_4^{2-}$$ ion.

AP EAPCET 2021 - 19th August Evening Shift
34

Given that ionisation potential and electron gain enthalpy of chlorine are 13eV and 4 eV respectively. The electronegativity of chlorine on Mulliken scale, approximately equals to

AP EAPCET 2021 - 19th August Morning Shift
35

Which of the following will have maximum dipole moment?

AP EAPCET 2021 - 19th August Morning Shift
36

In which of the following molecules/ions, the central atom is sp$$^2$$ hybridised?

BF$$_3$$, NO$$_2^-$$, NH$$_2^-$$ and H$$_2$$O

AP EAPCET 2021 - 19th August Morning Shift
37

For which molecules among the following, the resultant dipole moment ($$\propto$$) $$\ne$$ 0 ?

AP EAPCET 2021 - 19th August Morning Shift Chemistry - Chemical Bonding and Molecular Structure Question 34 English

AP EAPCET 2021 - 19th August Morning Shift
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