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Test: Covalent & Coordinate Bonding - NEET MCQ


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28 Questions MCQ Test Chemistry Class 11 - Test: Covalent & Coordinate Bonding

Test: Covalent & Coordinate Bonding for NEET 2024 is part of Chemistry Class 11 preparation. The Test: Covalent & Coordinate Bonding questions and answers have been prepared according to the NEET exam syllabus.The Test: Covalent & Coordinate Bonding MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Covalent & Coordinate Bonding below.
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Test: Covalent & Coordinate Bonding - Question 1

Direction (Q. Nos. 1-15) This section contains 15 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. By Lewis structure NO has following fact

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 1


To complete octet, N shares 2 electrons and oxygen shares 3 electrons.

Thus, (a) is correct.

Test: Covalent & Coordinate Bonding - Question 2

Lewis structure of HCI, H2O and NH3 are

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 2

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Test: Covalent & Coordinate Bonding - Question 3

The maximum covalency is equal to :

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 3

The maximum covalency is total no. of  unpaired electron in ground state or in excited state which can be used for bond formation.

Test: Covalent & Coordinate Bonding - Question 4

Which of the following has incomplete octet?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 4


Test: Covalent & Coordinate Bonding - Question 5

Expansion of octet can not take place in

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 5

N(7) = 1s22s22p3
Nitrogen does not have (2d) orbitals. Thus, (more than 8) electrons cannot be accommodated in the second orbit.

Test: Covalent & Coordinate Bonding - Question 6

Which of the following is electron deficient?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 6




Test: Covalent & Coordinate Bonding - Question 7

Based on valence bond theory, types of bonding in H2O are

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 7

Test: Covalent & Coordinate Bonding - Question 8

Bond order of (B— H) x and y bonds in diborane are respectively

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 8

Based on structure:


 bond has one electron; bond order y = 0.5.
 bond has two electrons; bond order x = 1.0. 

Test: Covalent & Coordinate Bonding - Question 9

Considering x-axis as the internuclear axis, which out of the following will not form sigma bond.

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 9




Test: Covalent & Coordinate Bonding - Question 10

In which of the following molecules would you expect the N to N bond to be shortest ?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 10





Test: Covalent & Coordinate Bonding - Question 11

Which of these molecules have non-bonding electron pairs on the central atom?

I. SF4
II. ICI3
III. SO2
IV. NH3
V. SiF4

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 11

Nonbonding electron pairs means lonepair of electrons.​

  • SF4​ molecule has one non-bonding electron pair on the central atom Sulfur.
  • ICl3​ molecule has two non-bonding electron pairs on the central atom Iodine. 
  • SO2​ molecule has one non-bonding electron pair on the central atom Sulfur.

So the answer is D.

Test: Covalent & Coordinate Bonding - Question 12

HCN and HNC molecules have equal number of

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 12

Test: Covalent & Coordinate Bonding - Question 13

When a chemical bond is formed, there is decrease in

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 13

When two atoms approach to form a bond, there is decrease in potential energy (PE). After bond formation, at a minimum distance (called bond length). PE further increases.

Test: Covalent & Coordinate Bonding - Question 14

Mean bond enthalpy of different bonds are given

Out of the given pairs, which compound is more stable than the other?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 14

)bond enthalpy > )bond enthalpy hence, is stable.


Bond enthalpy of six (P— P) bond = 6 x 215 = 1290 k j mol-1

Bond enthalpy of six (N — N) bond = 6 x 160
= 960 kJ mol-1
Thus, P4 is more stable than N4.

Test: Covalent & Coordinate Bonding - Question 15

Covalency of carbon in CO is three because

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 15


In structure I, octet of oxygen is complete but octet of carbon is incomplete. Hence, carbon is an acceptor of an electron pair from oxygen. Thus, covalency of carbon is three in CO.

*Multiple options can be correct
Test: Covalent & Coordinate Bonding - Question 16

Q. Which of the following species contain at least one atom that violates the octet rule?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 16

(a) Octet of Cl expanded to (9).
(b) Octet Xe expanded to (10).
(c) Octet of P expanded to (10).
 

*Multiple options can be correct
Test: Covalent & Coordinate Bonding - Question 17

Select the correct statement(s) about NO2.

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 17


Due to unpaired electron paramagnetic, N-atom in NO2 is electron deficie nt thus, to complete octet, dimer is formed.

In N2O4 formation, each N-atom gets charge. Dipole-dipole repulsion increases (N— N) bond length which is larger than (N— N)covalent bond.

Thus, (a), (b), (c) and (d) are correct. 

*Multiple options can be correct
Test: Covalent & Coordinate Bonding - Question 18

Which of the following is/are correct statement(s)?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 18

Incorrect (b)

two sp-hybrid orbitals are along x-axis.

*Multiple options can be correct
Test: Covalent & Coordinate Bonding - Question 19

Electron-seeking species are called electrophiles. Which of the following sets consists of electrophiles only?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 19

AICI3-Octet of Al is incomplete; thus electrophile. 
SO3—It has positive charge on sulphur due to resonance.

*Multiple options can be correct
Test: Covalent & Coordinate Bonding - Question 20

Ratio of σ and π-bonds is equal to 1 in

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 20



Tetracyanomethane, where σ bond =8, ratio = 1, π bond = 8.

 Carbon dioxide, O=C=O

σ = 2, π = 2 

Ratio = 1.

Test: Covalent & Coordinate Bonding - Question 21

Direction (Q. Nos. 21-25) This section contains  a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given options (a),(b),(c),(d)
Passage I

Electronegativity values (EN) of elements have been given (in Pauling’s scale)



Graph shows variation of percentage ionic character with (EN) difference of two elements.
Q. Which of the following bonds is most polar?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 21

Test: Covalent & Coordinate Bonding - Question 22

Which of the following option with respect to the Pauling electronegativity values of the element is

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 22

Test: Covalent & Coordinate Bonding - Question 23

Passage II

Consider the following structure


Q. Shortest (C— H) bond is

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 23

Greater the electronegativity of carbon atom
(sp3 < sp2 < sp)
Greater the attraction for (C— H) bonding pair hence, shorter the (C— H)bond.

Test: Covalent & Coordinate Bonding - Question 24

Passage II

Consider the following structure

Q. Shortest (carbon-carbon) bond is 

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 24



 

Test: Covalent & Coordinate Bonding - Question 25

Which among the following chemical bond were described by Kossel and Lewis?

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 25

Both Ionic and Covalent bond arise from the tendency of atoms to attain stable configuration of electrons.

Test: Covalent & Coordinate Bonding - Question 26

Direction (Q. Nos. 26) Choice for the correct combination of elements from coloumn I and Coloumn II are given as option (a), (b), (c) and (d) out of which one is correct.
Match the species in Column I with their properties in Column II.

Detailed Solution for Test: Covalent & Coordinate Bonding - Question 26






α and π bonds exist.
Oxidation number of N = + 3 it can be increased to +5 (maximum) and decreased to -3 (minimum) HNO2 is also a ’ligand.

HNO2 is also the complexing agent 

*Answer can only contain numeric values
Test: Covalent & Coordinate Bonding - Question 27

Direction (Q. Nos. 27 and 28) This section contains 2 question. when worked out will result in an integer from 0 to 9 (both inclusive)

Q. In acidic medium,H2O2 changes Cr2O72- to CrO5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO3 is 


Detailed Solution for Test: Covalent & Coordinate Bonding - Question 27

When H2O2 is added to an acidified solution of a dichromate, Cr2O72-, aO deep blue coloured complex, chromic peroxide, CrO5 [ or CrO(O2)2] is formed.
Cr2O72- +2H++4H2O2 ---> 2CrO(O2)2 +5H2O
This deep blue coloured complex.

Oxidation state of Cr is +6 due to the presence of two peroxide linkages which can be calculated as Cr peroxide normal
x+(-1)4+(-2) =0
x-6 =0
x=+6

*Answer can only contain numeric values
Test: Covalent & Coordinate Bonding - Question 28

K2Cr2O7 is an oxidising agent in acidic medium. How many O-atoms are directly linked to each Cr-atom?


Detailed Solution for Test: Covalent & Coordinate Bonding - Question 28


There are 4 atoms that are directly linked to each Cr atom.

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