FSC Chemistry MCQs Chapter 6 Class 11 - PLS Prep by PakLearningSpot

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Created on February 10, 2022

Chemistry Ch 6 Class 11 CHEMICAL BONDING

1 / 79

The compound in which carbon uses only its sp3 – hybrid orbitals for bond formation is?

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) HCOOH

B) (CH3)3COH

C) NH2CONH2

D) (CH3)3C – CHO

2 / 79

Which noble gas has highest ionization energy?

3 / 79

Which of the following molecules have zero Dipole moments?

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) CO2

C) Cl2

D) C6H6

E) All of the above

4 / 79

Linear combination of atomic orbitals (LCAO) results in the formation of:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Sigma bond

B) Pi bond

C) Bonding molecular orbitals only

D) Bonding and antibonding molecular orbitals

5 / 79

The boiling point of water is higher than other hydrides because water molecules can form:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) 4 hydrogen bonds

B) 3 hydrogen bonds

C) 2 hydrogen bonds

C) 1 hydrogen bonds

6 / 79

Down the group atomic radii increases due to?

Increase in screening effect

Repulsion between the electrons of valence shell

Increase in nuclear charge

All of these

7 / 79

Lithium and beryllium are unique in such a way that they have higher charge densities which produce strong polarizing effects due to:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) Non-metal

B) Solubility

C) Small Size

D) Large size

8 / 79

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) SF4

B) XeF4

C) NF3

D) SiF4

9 / 79

How many bonds are there in CO?

10 / 79

The order of force of repulsion between lone pairs and Bond pairs is?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Lone pair Bond -pair repulsion > lone pair lone pair repulsion> Bond pair Bond pair repulsion

B) Bond pair -Bond pair repulsion> lone pair lone pair repulsion> lone pair Bond pair repulsion

C) lone pair lone pair repulsion> Bond pair Bond pair repulsion> lone pair Bond pair repulsion

D) lone pair lone pair repulsion> lone pair Bond pair repulsion> Bond pair Bond pair repulsion

11 / 79

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) S-S overlapping

B) S-Pz overlapping

C) S-Px overlapping

D) Pz – Pz overlapping

12 / 79

The common features, among the species CN, CO and NO are:

NUMS 2016
Chemistry
Chemical Bonding
Elimination Tool:

A) Bond order three and Isoelectronic

B) Bond order three and weak field ligands

C) Bond order two andπacceptors

D) Isoelectronic and weak field ligands

13 / 79

Second Ionization energy of M atom

Higher than first ionization energy

Lower than first ionization energy

Very low

None of these

14 / 79

GN lewis described which one of the following bonds?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic bond

B) covalent bond

C) coordinate covalent bond

D) all of the above

15 / 79

The first ionization energy is maximum for:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Na

B) Mg

C) Al

D) K

16 / 79

Which of the following ions will show maximum hydration?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Mg+2

B) Na+1

C) Al+3

D) Ca+2

17 / 79

Which of the following has maximum Hydration power?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Na+

B) K+

C) Be2+

D) Ca+2

18 / 79

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) I

B) Br

C) Cl

D) F

19 / 79

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Surface tension

B) Adhesive forces

C) Viscosity

D) Polarity

20 / 79

Surface tension in a liquid is caused by?

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Lack of horizontal intermolecular forces

B) greater rate of evaporation at the surface than from the interior

C) reduced rate of intermolecular collisions at the surface

D) greater fluidity

21 / 79

In period, moving from left to right

Electro negativity decreases

ElectronegativIty Increases

Electro negativity remains same

None of these

22 / 79

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) N2H5+

B) BaCl2

C) HCl

D) H2O

23 / 79

Which pair has species with different shapes?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) BeCl2 and CO2

B) NH3 and BF3

C) SCl2 and H2O

D) CH4 and NH4+

24 / 79

The molecule with zero dipole moment is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) NH3

B) H2O

C) BF3

D) SO2

25 / 79

Geometry of SF6 is:

Octahedral

Hexagonal

Decahedral

Trigonal

26 / 79

Both ionic and covalent bonds are present in:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) CH4

B) SO2

C) KCl

D) NaOH

27 / 79

which type of hybridization doesn’t exist?

Sp4

Sp3

Sp2

28 / 79

Which of the following has a lone pair of electrons on the central atom?

PCI3

NH4

PCI

CH4

29 / 79

Every sp3 orbital is oriented in space In such a way that angle between them is:

109.5

104.5

120

180

30 / 79

Which of the following hybrid orbitals has maximum “s” character?

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp3 hybrid orbital

B) Sp2 hybrid orbital

C) Sp hybrid orbital

D) Dsp2 hybrid orbital

31 / 79

The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) One sigma and one pi

B) Two sigma and one pi

C) Only sigma

D) One sigma and two pi

32 / 79

Acetone and Chloroform are soluble into each other due to:

NUMS 2015
Chemistry
Chemical Bonding
States of Matter
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Hydrogen bonding

B) Dipole – dipole interaction

C) London forces

D) Both (a) and (b)

33 / 79

Bond energy between nitrogen atoms in N2 molecule is:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

B) 820 kJ mol-1

C) 498 kJ mol-1

D) 347 kJ mol-1

E) 946 kJ mol-1

34 / 79

The bond angle of NF3 is:

102.5

104

107.5

120

35 / 79

Electrical conductivity depends upon _______.

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Temperature

B) Degree of dilution

C) Nature of electrolyte

D) Speed of ions

36 / 79

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Energy of affinity

B) Bond energy

C) Crystal energy

D) Potential energy

37 / 79

sp3 hybridization in CH4 gives it ______ geometry.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) linear

B) coplanar

C) tetrahedral

D) octahedral

38 / 79

Bond energy:

I. is the energy required to break a bond between two atoms in a diatomic molecule

II. Is taken as the energy released in forming a bond form free atoms

III. Is the measure of the strength of bond

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

B) I and II only

C) I and IIII only

D) II only

E) I, II and III

39 / 79

Which of the following has the largest dipole moment?

HBr

HCI

40 / 79

Hybridization in BeCl2 Is a

sp3 hybridization

sp2 hybridization

sp hybridization

None of these

41 / 79

Paramagnetism is due to:

Unpaired electron

Complete valence shell

Paired electron

Ionization

42 / 79

The substance which conducts electricity by the movement of ions:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Graphite

B) Copper

C) Molten NaCl

D) Mercury

43 / 79

Sigma bond is formed by:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Transferring the electrons

B) Head-on overlapping of atomic orbitals

C) Mutual but unequal sharing of electrons

D) Parallel overlapping of atomic orbitals

44 / 79

The decreasing order of second ionization energy of K, Ca, Ba is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) K > Ca > Ba

B) Ca > Ba > K

C) Ba > K > Ca

D) K > Ba > Ca

45 / 79

Which one of these is paramagnetic?

None of these

46 / 79

The hybridization of atomic orbitals of N2+, NO3-, and NH4+are, respectively:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp, sp2, sp3

B) Sp, sp3, sp2

C) Sp2, sp, sp3

D) Sp2, sp3, sp

47 / 79

Co-ordinate covalent bond Is not formed in which of the following

PH3

NH3

CH4

None of these

48 / 79

Which compound shows maximum hydrogen bonding with water?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) HF

B) H2O

C) NH3

D) CH3OH

49 / 79

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Elimination Tool:

A) Ammonia

B) Ammonium hydroxide

C) Hydrochloric acid

D) Water

50 / 79

Structure of ammonia is:

Linear

AB4 (bent or angular)

AB3 (Trigonal)

AB4 (Trigonal pyramidal)

51 / 79

H2S is an example of ______ hydride.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic

B) Covalent

C) Complex

D) Metallic

52 / 79

The shape of SnCl2 is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Linear

B) Tetrahedral

C) Angular

D) Trigonal Planar

53 / 79

Which one of the following has the lowest % ionic character?

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) BCl3

C) BeCl2

D) LiCl

54 / 79

Ionization potential

Increases down the group

Decreases down the group

Stay same

None

55 / 79

Which of the following is the correct order of electronegativity (from highest to lowest)?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) F , O, N , C

B) N, F , O, C

C) C, F, N, O

D) C, F, O, N

56 / 79

Dipole moment of H2 is:

1.03

) 1.45

0.78

57 / 79

Which of the following has maximum Ionization energy?

58 / 79

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionization energy of A is high but electron affinity of B is low

B) The ionization energy of A is low but electron affinity of B is high

C) Both ionization energy of A and electron affinity of B are high

D) Both ionization energy of A and electron affinity of B are low

59 / 79

H2O has a higher boiling point than HF because:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) H2O is more polar than HF

B) H2O can form more hydrogen bonds

C) H2O has higher molecular weight

D) H2O has more atoms

60 / 79

In water molecules, oxygen atom is hybridized as

sp2

sp3

sp4

sp3d2

61 / 79

Which of the following is the highest electronegative element?

62 / 79

Paramagnetism is due to:

Unpaired electron

Complete valence shell

Paired electron

Ionization

63 / 79

The number of sigma and pi bonds in 1-butene-3-yne?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) 5 sigma and 5 pi

B) 7 sigma and 3 pi

C) 8 sigma and 2 pi

D) 6 sigma and 4 pi

64 / 79

Electronegativity is defined as the power of an atom in a molecule to

Repel electrons towards itself

Attract electrons towards itself

Expand itself

All of the above

65 / 79

If the difference between electronegativity values between two atoms is less than 1.7 , the bond is necessarily:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic

B) Covalent

C) Electrovalent

D) Polar

66 / 79

Which of the following molecules has no net dipole moment?

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) HCI

B) H2O

C) CCl4

D) CH3Cl

67 / 79

Silicon is found in nature in form of:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Isolated or free silicon

B) Sulphides

C) Silica or silicates

D) Only silicates

68 / 79

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Only ionic

B) Covalent and coordinate

C) Only covalent

D) Covalent and ionic

69 / 79

Which of the following has greatest electronegativity?

Cl2

Br2

70 / 79

How many orbitals intermix in sp hybridization?

71 / 79

The dipole moments of the given molecules (BF3, NF3, NH3) are such that:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) BF3 > NF3>NH3

B) NF3 > BF3> NH3

C) NH3 > NF3 > BF3

D) NH3 >BF3 > NF3

72 / 79

The geometry of H2S and its dipole moment are:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Angular and non – zero

B) Angular and zero

C) Linear and zero

D) Linear and non – zero

73 / 79

Which theory deals with hybridization of orbitals?

VBT

MOT

VSEPR

None of these

74 / 79

Methane has geometry

Tetrahedral

Hexagonal

Planner

Bent

75 / 79

Bond angle of Ethane is:

109.5

120

180

Different

76 / 79

Triatomic molecules have following movements:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Translation and vibrational

B) Rotational

C) All the above

D) None the above

77 / 79

Which of the following is paramagnetic

Nickle

Vanadium

Uranium

Oxygen

78 / 79

Ionization energy depends upon:

Nuclear charge

Shielding effect

Atomic radius

All of the above

79 / 79

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionization energy of A is high but electron affinity of B is low

B) The ionization energy of A is low but electron affinity of B is high

C) Both ionization energy of A and electron affinity of B are high

D) Both ionization energy of A and electron affinity of B are low

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6 responses to “FSC Chemistry MCQs Chapter 6 Class 11”

M.Anas Nazim says:

July 14, 2022 at 1:53 pm

MCQ no 27 is wrong right answer is A(Unpaired Electon)
- Ali Durrani says:
  
  July 15, 2022 at 8:42 pm
  
  JazakAllah we will review IA
Mehwish says:

September 15, 2022 at 2:41 am

Problem is all about wrong answers .
Not all but the confusion starts when it show same question twice with different answers .
- Ali Durrani says:
  
  September 15, 2022 at 12:35 pm
  
  kindly mentions mcqs
  - Zohaib says:
    
    May 3, 2023 at 9:41 am
    
    Main problem key wrong nai hai everytime some of the mcqs show different key
ZUHA NISAR says:

October 6, 2022 at 12:40 pm

question number 24 and 27
kindly check them..