1
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
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)
A
$Q_1=V-\left(\frac{U}{B}\right)$
B
$Q_i=V+(U-B)$
C
$O_r=V-(\nu+B)$
D
$Q,=V-\left(\frac{B}{U}\right)$
2
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
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
A
$A-12, B=111, C-L, D=N$
B
$\mathrm{A}=\mathrm{II}, \mathrm{B}-\mathrm{N}, \mathrm{C}-$ III, $\mathrm{D}-1$
C
$A-11, B=11, C-D=N$
D
$\mathrm{A}-$ III, $\mathrm{B}-\mathrm{L}, \mathrm{C}, \mathrm{N}, \mathrm{D}-$ II
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

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 13 English

A
$$-2,0,0$$
B
$$-1,0,-1$$
C
$$0,-1,-1$$
D
$$-3,0,+1$$
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The set of species having only fractional bond order values is

A
$$\mathrm{C}_2^{2-}, \mathrm{N}_2, \mathrm{O}_2^{2-}$$
B
$$\mathrm{O}_2^{+}, \mathrm{O}_2^{-}, \mathrm{N}_2^{+}$$
C
$$\mathrm{O}_2^{2+}, \mathrm{O}_2, \mathrm{C}_2^{2-}$$
D
$$\mathrm{Li}_2, \mathrm{H}_2^{+}, \mathrm{C}_2$$
AP EAPCET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12