Chemistry Chemical Bonding Online Mcqs Test

Q: How can I prepare for Chemistry Chemical Bonding Online Mcqs Test?

You can prepare for Chemistry Chemical Bonding Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding?

Answer

Orbital overlap will not occur

Answer

Bonding will not occur

Answer

None of these

Answer

Both A and B are correct

Question 2

2. Which of the following has maximum e/m value for positive rays?

Question 3

3. The number and type of bonds between carbon atoms in calcium carbide are

Answer

Two sigma, one pi

Answer

One sigma, one pi

Answer

One sigma, two pi

Answer

Two sigma, two pi

Question 4

4. The third line of the Balmer series, in the emission spectrum of the hydrogen atom, is due to the transition from the

Answer

Fifth Bohr orbit to the second Bohr orbit

Answer

Seventh Bohr orbit to the third Bohr orbit

Answer

Fourth Bohr orbit to the first Bohr orbit

Answer

Sixth Bohr orbit to the third Bohr orbit

Question 5

5. The number of anti-bonding electron pairs in O₂²¯ molecular ion on the basis of MOT is

Question 6

6. Which of the following element’s outermost orbits last electron has magnetic quantum number m = 0?

Question 7

7. Water (H₂O) is liquid while hydrogen sulphide (H₂O) is a gas because

Answer

Water has higher molecular weight

Answer

Hydrogen sulphide is a weak acid

Answer

Sulphure has high electronegativity than oxygen

Answer

Water molecules associate through hydrogen bonding

Question 8

8. Which one of these is weakest?

Answer

Ionic bond

Answer

Metallic bond

Answer

Covalent bond

Answer

Van der Waal’s forces

Question 9

9. Anti-bonding MO is formed by

Answer

None of these

Answer

Addition of atomic orbitals

Answer

Multiplication of atomic orbitals

Answer

Subtraction of atomic orbitals

Question 10

10. Which of the following will have highest value of electron affinity

Question 11

11. The central atom in BrF₅ has _?_ bonding pairs of electrons and _?_ non-bonding pairs of electrons.

Question 12

12. Energy of an atom in a compound is

Answer

Impossible to predict

Answer

Higher than individual

Answer

Lesser than individual

Question 13

13. Noble gases are most stable of all other elements because

Answer

They have completely filled s and p orbitals

Answer

They have high ionization energies

Answer

They do not react with one another

Answer

They are mono atomic gases

Question 14

14. Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers l = 1 and l = 2 are respectively

Question 15

15. An electron has principal quantum number 3. The number of its (i) subshells and (ii) orbitals would be respectively

Question 16

16. Force responsible to hold atoms together in a compound is called

Answer

Interaction

Answer

All of above represent same entity

Answer

Attractive force

Question 17

17. The number of significant figures in 0.00200 is

Question 18

18. Nuclear radiation is emitted by those elements whose

Answer

Molecules are unstable

Answer

Nuclei are unstable

Answer

Nuclei are stable

Answer

Molecules are stable

Question 19

19. Fluorine molecule is formed by

Answer

The axial s-p overlap

Answer

The sidewise p-p overlap

Answer

The axial p-p overlap

Answer

The overlap of two sp² hybrid orbitals

Question 20

20. Nitrogen gas is chemically inert gas due to the reason that

Answer

It has high electronegativity

Answer

There is triple bond between nitrogen atoms which make the molecule quite stable

Answer

It has high heat of dissociation

Answer

Some of the electrons are also present in anti-bonding molecular orbitals

Question 21

21. Keeping in view the bonding molecular orbitals, find the incorrect statement

Answer

Bonding molecular possess less energy than atomic orbitals from which they are formed

Answer

Bonding molecular orbitals have low electron density between the two nuclei

Answer

Bonding molecular orbitals are formed when the electrons waves are undergo constructive interference

Answer

Every electron in the bonding molecular orbital contributes to the attraction between atoms

Question 22

22. According to MO theory, the species O⁺₂ possesses

Answer

Diamagnetic character

Answer

Bond order of 2.5

Answer

Stability lower then O₂

Answer

Three unpaired electrons

Question 23

23. Ammonia has a net dipole moment while boron trifluoride has zero dipole moment because

Answer

Fluorides is more electronegative

Answer

Boron trifluoride is pyramidal in shape while NH₃ is planar

Answer

NH₃ is pyramidal in shape while BF₃ is planar

Answer

Fluorides are more electronegative

Question 24

24. Which is not true with respect to cathode rays?

Answer

A stream of electrons

Answer

Charged particles

Answer

Move with speed as that of light

Answer

Can be deflected by magnetic fields

Question 25

25. Geometry of simple molecule having SP³ hybrid orbital is

Answer

Square planner

Answer

Triangular

Answer

Tetrahedral

Question 26

26. A student subtracted 0.00055 from 10.2345678 and reported the result as 10.23401. But his friend told him that result was wrong. What is the correct result?

Answer

10.2340178

Question 27

27. Which of the following statements about positive ions is incorrect?

Answer

They are larger than the atoms from which they were formed

Answer

They are also known as cations

Answer

They are formed when electros are formed from atoms

Answer

They are smaller than the atoms from which they were formed

Question 28

28. Among the alkaline earth metals the element forming predominantly covalent compounds is

Question 29

29. The structure of ICl₂¯ is

Answer

Square planar

Answer

Octahedral

Answer

Trigonal bipyramidal

Question 30

30. Bond order for N2 molecule is

Question 31

31. Which of the following has zero depolemoment?

Question 32

32. The relative attraction of the nucleus for the electrons in a chemical bond is called

Answer

None of these

Answer

Ionization energy

Answer

Electron affinity

Answer

Electro negativity

Question 33

33. The value of e/m ratio of electron is:

Answer

1.7588 x 10²⁰

Answer

9.1095 x 10¯³¹

Answer

6.02 x 10²³

Answer

1.7588 x 10¹¹

Question 34

34. Which kinds of bonding can be found in a sample of H₂O(l)?

Answer

Both polar covalent and hydrogen bonds

Answer

Nonpolar covalent bonds only

Answer

Hydrogen bonds only

Answer

Ionic and nonpolar hydrogen bonds

Question 35

35. Which of the following molecules does not have a net dipole moment?

Question 36

36. Which of the following value of Electronegativity difference corresponds the formation of Ionic Bond?

Answer

Lesser then 1.7

Answer

Greater than 1.7

Answer

No specificity exist

Answer

Equal to 1.7

Question 37

37. Inter molecular forces in solid hydrogen are

Answer

Van der Waal forces or London dispersion forces

Answer

Hydrogen bonds

Answer

Covalent forces

Answer

All of these

Question 38

38. Al become isoelectronic with Ne

Answer

By losing two electrons

Answer

By gaining two electrons

Answer

By losing three electrons

Answer

By gaining three electrons

Question 39

39. Ionic radius in a period from left to right

Answer

First decreases then increases

Answer

First increases then decreases

Question 40

40. Effective magnetic moment of Sc³ ion is

Question 41

41. If atomic numbers of nickel and copper are 28 and 29 respectively. Which of the following does the electronic configuration 1s² 2s² 2p⁶3s²3p⁶3d⁹ represent?

Question 42

42. Which one of the following molecules shows high percentage of ionic character?

Question 43

43. The shape of ClO₃ according to valence shell electron pair repulsion theory will be

Answer

Square planar

Answer

Planar triangle

Answer

Tetrahedral

Question 44

44. Which molecule is polar among the following?

Answer

Carbon tetrachloride

Answer

Carbon dioxide

Question 45

45. Bond angle in water is

Question 46

46. Azimuthal quantum number of last electron of ₁₁Na is

Question 47

47. The configuration 1s² 2s² 2p⁵ 3s¹ shows

Answer

Excited state of neon

Answer

Ground state of fluorine atom

Answer

Excited state of fluorine

Answer

Excited state of O¯₂

Question 48

48. When potassium metal is exposed to violet light

Answer

Ejection of some potassium atoms occurs

Answer

There is no effect

Answer

The absorption of electrons takes place

Answer

Ejection of electrons takes place

Question 49

49. The energy of a photon is given as, ∆ E/atom = 3.03 x 10¯¹⁹ J atom¯¹ then, the wavelength (λ) of the photon is

Question 50

50. According to VSEPR theory, the shape of the water molecule is

Answer

Planar triangle

Answer

Octahedral

Answer

Distorted tetrahedral

Question 51

51. Which orbital of the following has a principal quantum number of 3 and an angular momentum quantum number of 27?

Question 52

52. Energy released or absorbed when electrons are added in atom is

Answer

Activation energy

Answer

Electronegativity

Answer

Electron affinity

Answer

Ionization potential

Question 53

53. Unit of dipole moment is

Question 54

54. The four quantum numbers of the valency electron of potassium are

Answer

4, 1, 0, ½

Answer

4, 4, 0, ½

Answer

4, 0, 0, ½

Answer

4, 1, 1, ½

Question 55

55. Elements with ________ first ionization energies and ________ electron affinities generally from cations. Choose the correct point

Answer

None of these

Answer

Low, positive or slightly negative

Answer

Low very negative

Answer

High, very negative

Question 56

56. The bond order in NO is 2.5 while that is NO⁺ is 3. Which of the following statements is true for these two species?

Answer

Bond length in NO⁺ is greater than in NO

Answer

Bond length in NO is greater than in NO⁺

Answer

Bond length in NO⁺ is equal to that in NO

Answer

Bond length is unpredictable

Question 57

57. Which one shows high % age of the ionic character?

Question 58

58. 2nd orbit is away from nucleus for H-atom as compared to first orbit

Question 59

59. The total number of possible values of magnetic quantum number for the value of l = 3 is

Question 60

60. Which of the following has more unpaired d-electrons?

Question 61

61. Shape of CIO₃¯ is

Answer

Tetrahedral

Answer

Triangular planar

Answer

Triangular pyramidal

Answer

Triangular bipyramidal

Question 62

62. The correct set of quantum numbers (n, l and m) respectively of the unpaired electron of chlorine atom is:

Question 63

63. A long a period E.N __________ from left to right

Answer

Variable trend

Question 64

64. The carbon atoms in calcium carbide are held by

Answer

Ionic bonds

Answer

2 covalent, one co-ordinate bond

Answer

2π and one σ bond

Answer

2 sigma bonds

Answer 141

Liquid HCl

Answer 142

Liquid NH3

Answer 143

One sigma bond and two pi-bonds

Answer 144

Three pi-bonds

Answer 145

Two sigma bonds and one pi-bond

Answer 146

Three sigma bonds

Answer 147

In molecular orbitals, the number of bonding electrons equals the number of anti-bonding electrons

Answer 148

The molecular orbitals in a molecule equals twice the number of constituent atomic orbitals

Answer 149

As bonding molecular orbitals become more stable, anti-bonding molecular orbital become equally less stable

Answer 150

Each bonding molecular orbital can accommodate only one electron

Answer 151

Hund’s rule

Answer 152

Aufbau principal

Answer 153

Pauli’s exclusion principle

Answer 154

1 electron

Answer 155

6 electrons

Answer 156

2 electrons

Answer 157

4 electrons

Answer 158

Electropositive character of elements

Answer 159

Electronegative character of elements

Answer 160

Octet rule

Answer 161

Pauli exclusion principle

Answer 162

Water should be preferred over lemon Juice for drinking

Answer 163

Lemon juice is dangerous for health

Answer 164

There may not be a possibility of chemical reaction

Answer 165

There may be a possibility of a chemical reaction

Answer 166

Dipole moment is zero

Answer 167

SP hybridization

Answer 168

Linear geometry

Answer 169

Ionization energy

Answer 170

Atomic size

Answer 171

Electron affinity

Answer 172

Electronegativity

Answer 173

Nine σ and nine π

Answer 174

Eight σ and eight π

Answer 175

Nine σ and seven π

Answer 176

Five π and nine σ

Answer 177

Remain same

Answer 178

Triangular

Answer 179

Tetrahedral

Answer 180

Quarternization of energy of electrons

Answer 181

Quarternization of angular members

Answer 182

Heisenberg’s uncertainty principle

Answer 183

Plank’s quantum theory

Answer 184

Decreases for low value of Z and increases for higher value of Z

Answer 185

Remains constant

Answer 186

London force

Answer 187

Dispersion force

Answer 188

Van der Waal’s force

Answer 189

Chemical bond

Answer 190

It is always less than 1st ionization energy

Answer 191

It may be greater or less than the 1st ionization depending upon ht nature of the element

Answer 192

It is always greater than 1st ionization energy

Answer 193

It is equal to the 1st ionization energy

Answer 194

Hydrogen fluoride

Answer 195

Hydrogen sulphide

Answer 196

Two unpaired electron

Answer 197

No unpaired electron

Answer 198

None of these

Answer 199

One unpaired electron

Answer 200

Sublimation of metallic sodium to give yellow vapour

Answer 201

Low ionization energy of sodium

Answer 202

Emission of excess energy absorbed as a radiation in the visible region

Answer 203

Photosensitivity of sodium

Answer 204

Colour spectrum

Answer 205

Crystallization

Answer 206

Distillation

Answer 207

Vaporization

Answer 208

10¯⁷ J/mol

Answer 209

6.02 x 10²³ J/mol

Answer 210

6.02 x 10¹⁶ J/mol

Answer 211

6.63 x 10¯³⁴ m

Answer 212

6.65 x 10¯³⁵ m

Answer 213

6.63 x 10¯³⁵ m

Answer 214

6.63 x 10¯³³ m

Answer 215

2.657 x 10¯²³ g

Answer 216

5.316 x 10¯²³ g

Answer 217

5.316 x 10¯²³ g

Answer 218

Electron rich

Answer 219

Electron deficient

Answer 220

No such acids exist

Answer 221

Octet is complete

Answer 222

Co-ordinate bond

Answer 223

Electrovalent bond

Answer 224

Double bond

Answer 225

Covalent bond

Answer 226

Trigonal bipyramidal

Answer 227

p orbitals

Answer 228

sp² hybrid orbitals

Answer 229

s orbitals

Answer 230

sp³ hybrid orbitals

Answer 231

Ionic bond

Answer 232

Metallic bond

Answer 233

Tetrahedral

Answer 234

Square planner

Answer 235

Triangular

Answer 236

Hydrogen bond formation

Answer 237

Dipole interaction

Answer 238

Van der Waal’s forces

Answer 239

Covalent attraction

Answer 240

A pair of electrons involved in bonding

Answer 241

A pair of electrons

Answer 242

A pair of valence electrons

Answer 243

A pair of valence electrons not involved in bonding

Answer 244

Shorter wavelength

Answer 245

Gamma rays

Answer 246

X-rays not produced

Answer 247

Larger wavelength

Answer 248

1/2 x ɜ₀

Answer 249

Depends on the gas used in the discharge tube

Answer 250

Does not depend on the nature of the gas used in the discharge tube

Answer 251

Depends on the pressure in the discharge tube

Answer 252

Does not depend on the nature of the gas used in the discharge tube

Answer 253

Noble gases

Answer 254

Coinage metals

Answer 255

Gun metals

Answer 256

Alkali metals

Answer 257

Square planar

Answer 258

Tetrahedral

Answer 259

Trigonal bipyramidal

Answer 260

Blue is absorbed more easily

Answer 261

Blue is darker colour

Answer 262

Blue has higher wavelength

Answer 263

Blue has more energy

Answer 264

Concentrated acids

Answer 265

Polar solvents

Answer 266

All solvents

Answer 267

Non-polar solvents

Answer 268

Visible, ultraviolet, infrared, gamma rays

Answer 269

Radio, visible, infrared, ultraviolet

Answer 270

Microwave, infrared, visible, ultraviolet

Answer 271

X – radiation, visible, infrared, microwave

Answer 272

Atomic orbital and hybrid orbital

Answer 273

Un-hybrid orbitals

Answer 274

Hybrid orbitals

Answer 275

Hybrid and un hybrid orbitals

Answer 276

Electro negativity

Answer 277

Ionization energy

Answer 278

None of these

Answer 279

Electron affinity

Answer 280

H – NH₂

Answer 281

Triangular planar

Answer 282

Tetrahedral

Answer 283

All p-orbitals are involved

Answer 284

Four p-orbitals are involved

Answer 285

One s and 3 p-orbitals are involved

Answer 286

One p-orbital is involved

Answer 287

Lone pair – lone pair repulsion and lone pair – bond pair repulsion

Answer 288

Bond pair – bond pair repulsion only

Answer 289

Lone pair – lone pair repulsion only

Answer 290

Lone pair – bond pair repulsion only

Answer 291

Tetrahedron

Answer 292

Equal to square

Answer 293

Depends on its wavelength

Answer 294

Independent of its wavelength

Answer 295

Depends on its source

Answer 296

Electronegativity

Answer 297

Electron affinity

Answer 298

None of these

Answer 299

Ionization energy

Answer 300

First decreases then increases

Answer 301

First increases then decreases

Answer 302

12 in bonding molecular orbitals, and zero in anti-bonding molecular orbitals

Answer 303

9 in bonding molecular orbitals and 3 in anti-bonding molecular orbitals

Answer 304

8 in bonding molecular orbitals, 4 in anti-bonding molecular orbitals

Answer 305

10 in bonding molecular orbitals and 2 in anti-bonding molecular orbitals

Answer 306

Dispersion force

Answer 307

Dipole-dipole interaction

Answer 308

Ion-dipole interaction

Answer 309

Increase from top to bottom in a group

Answer 310

Does not change in a group

Answer 311

Does not change in a period

Answer 312

Generally increases from left to right in a period

Answer 313

Both are equal

Answer 314

Cannot be determined

Answer 315

The nature of residual gas

Answer 316

The nature of discharge tube

Answer 317

All of these

Answer 318

The nature of electrode

Answer 319

n = 1, l = 0

Answer 320

n = 2, l = 0

Answer 321

n = 1, l = 2

Answer 322

n = 2, l = 1

Answer 323

Tetrahedral

Answer 324

Trigonal bipyramidal

Answer 325

Octahedral

Answer 326

Impossible to predict

Answer 327

1 bond pair 3 lone pair

Answer 328

2 bond pair 2 lone pair

Answer 329

3 lone pair 1 bond pair

Answer 330

3 bond pair one lone pair

Answer 331

The two atoms start ionization

Answer 332

They energy of atoms increases

Answer 333

The repulsive force dominate the attractive forces

Answer 334

The attractive forces dominate the repulsive forces

Answer 335

First decreases then increases

Answer 336

Square planner

Answer 337

Octahedral

Answer 338

Trigonal bipyramidal

Answer 339

Triangular

Answer 340

sp²- hybridized carbon

Answer 341

always same irrespective of its hybrid state

Answer 342

sp- hybridized carbon

Answer 343

sp³-hybridized carbon

Total Questions:	187
Time Allowed:	60 Minutes
Total Marks:	187
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Chemistry Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Chemistry Interview Question Answer

Chemistry Chemical Bonding Online Mcqs Test

Important Chemistry Chemical Bonding Question and Answer

Chemistry Chemical Bonding Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry Chemical Bonding Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Malik Tahir

2 Comments

Leave a Reply Cancel reply

Important Chemistry Chemical Bonding Question and Answer

Chemistry Chemical Bonding Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry Chemical Bonding Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Latest Updates

Malik Tahir

2 Comments

Leave a Reply Cancel reply