Fundamental Principles of Organic Chemistry Online Mcqs Test

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Question 1

1. No lead gasoline with hygher octane number can be obtained by

Answer

Hydrogenation

Answer

Reforming process

Question 2

2. Which of the following compounds contains a truple bond?

Question 3

3. Which molecule has a linear arrangement of all component atoms?

Question 4

4. Which is the solid form of petroleum?

Question 5

5. When H₂SO₄ is heated with excess of chance of at 140°C. The major product is

Question 6

6. Geometry of simple molecule having sp3 hybrid orbital is

Answer

Square planner

Answer

Triangular

Answer

Tetrahedral

Question 7

7. The compounds containing –SH as a functional group are called

Answer

Hydrogen sulphides

Question 8

8. Compounds of carbon and hydrogen in which the tetra valency of carbon is fully satisfied are called:

Answer

Un-saturated

Answer

Para-magnetic

Question 9

9. The perchloric acid molecule contains:

Answer

2 lone pairs, 3 π bonds, and 4 σ bonds.

Answer

8 lone pairs, 2 π bonds, and 7 σ bonds.

Answer

13 lone pairs, 1 π bond, and 4 σ bonds

Answer

9 lone pairs, no π bonds, and 6 σ bonds.

Question 10

10. Vital force theory was rejected by

Question 11

11. Identify the4 compound formed, when ethylene combines with water in the presences of 10% sulphuric acid and HgSO₄ as catalyst

Question 12

12. On sp3 hybridization

Answer

All p-orbitals are involved

Answer

Four p-orbitals are involved

Answer

One p-orbital is involved

Answer

One s and 3 p-orbitals are involved

Question 13

13. The self-linking of carbon atoms is called

Answer

Catenation

Answer

None of these

Question 14

14. Hydrocarbons contain

Answer

C, H, and O only

Answer

C, H, O and N only

Answer

C and S only

Answer

C and H only

Question 15

15. Acetylene had a characteristic ethereal smell resembling that of

Question 16

16. Which of the following four molecules are polar: PH₃ OF₂ HF SO₃?

Answer

Only HF and OF₂

Answer

None of these

Answer

All except SO₃

Question 17

17. Fossil fuels are sources of organic compounds. Which one is not fossil fuel?

Answer

Natural gas

Question 18

18. The next homologue of C₁₀H₂₂ will be

Answer

C₁₃H₂₈

Answer

C₁₁H₂₄

Answer

C₉H₂₀

Answer

C₁₂H₂₆

Question 19

19. The four bonds of carbon in methane are directed towards the corners of

Answer

Tetrahedron

Question 20

20. Which is not the characteristic property of organic compounds?

Answer

Organic compound chain compounds

Answer

Organic compounds are water soluble

Answer

They exist in homologous series

Answer

They form long chain compounds

Question 21

21. On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives.

Answer

Ethyl alcohol

Answer

Methyl alcohol

Answer

Methyl hydrogen sulphate

Answer

Ethyl hydrogen sulphate

Question 22

22. C₄H₈ can show isomerism

Answer

Functional group

Answer

Structural

Question 23

23. The demand of gasoline can be fulfilled by

Answer

Crystallization

Answer

Vapourization

Question 24

24. The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

Answer

Chain isomers

Answer

Functional isomers

Answer

Position isomers

Question 25

25. In catalytic cracking, the typical catalyst used is

Answer

SiO₂+Al₂O₃

Question 26

26. In benzene carbon – carbon bonds are

Answer

Single covalent

Answer

Of the order 1.5

Answer

Double covalent

Answer

3 single and 3 double

Question 27

27. I-Chloropropane has two isomers. It is an example of

Answer

Metamerism

Answer

Functional group isomerism

Answer

Chain isomerism

Answer

Position isomerism

Question 28

28. The state of hybridization carbon in ethane is

Question 29

29. In which molecule carbon atom is sp² hybridized

Answer

None of these

Question 30

30. A triple bond contains _____ sigma bond(s) and _________ pi bond(s).

Question 31

31. The open chain organic compounds are called

Answer

Both A and B

Answer

Linear compounds

Question 32

32. Rates of organic reactions are

Answer

None-reactive

Question 33

33. Identify the compound which has a bond angle of 109.5°?

Question 34

34. C₂H₂Cl₂ can show isomerism

Answer

Metamerism

Answer

Functional group

Question 35

35. The rotation of two carbon atoms joined by double bond would happened only if

Answer

None of these

Answer

Sigma bond is broken

Answer

Both bonds are broken

Answer

Pi bond is broken

Question 36

36. The process in which one s and two p orbitals mix up with each other is called

Answer

Dsp²-hybridization

Answer

Sp²-hybridization

Answer

Sp-hybridization

Answer

Sp³-hybridization

Question 37

37. The carbocyclic compounds are those which have

Answer

All atoms are SP² -hybridized

Answer

All atoms are SP³ -hybridized

Answer

All atoms in the ring are carbon

Answer

May be other atoms

Question 38

38. Which of the following compounds will exhibit cis-trans isomerism?

Question 39

39. The major portion of natural oil is

Question 40

40. Which molecule is nonpolar?

Question 41

41. Coal heated in the absence of air of about 500-1000⁰C is converted to

Question 42

42. Coal is obtained from dead remains of

Answer

Both a and b

Question 43

43. Pi bonds are produced by overlapping of

Answer

Atomic orbital and hybrid orbital

Answer

Hybrid and un hybrid orbitals

Answer

Hybrid orbitals

Answer

Un-hybrid orbitals

Question 44

44. Which one of the following contains 50% carbon?

Answer

Antheracite

Question 45

45. The isomers which can be inter converted through rotation around a single bond are:

Answer

Positional isomers

Answer

Conformers

Answer

Enantiomers

Answer

Diastereomers

Question 46

46. When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

Answer

One sigma and three Pi

Answer

Three sigma and one Pi

Answer

Two sigma and two Pi

Question 47

47. Which one of the following is a heterocyclic compound?

Answer

Cyclohexanol

Answer

Anthracene

Question 48

48. Which of the following possess linear geometry

Question 49

49. Which is a mixture of low boiling hydrocarbon

Answer

Natural gas

Question 50

50. Which one is not an organic compound

Answer

None of these

Answer

Carbohydrates

Question 51

51. The functional group isomer of dimethyl –ether is

Answer

Prophyl alcohol

Answer

Ethyl alcohol

Answer

Butyl alcohol

Answer

Diethyl pether

Question 52

52. Choose the molecule that is incorrectly matched with the electronic geometry about the central atom.

Answer

NH₃ - tetrahedral

Answer

H₂O – tetrahedral

Answer

CF₄ - tetrahedral

Answer

PF₃ - pyramidal

Question 53

53. Which is the character of organic compounds

Answer

Rates of reactions are very fast

Answer

They possess particular properties

Answer

Mostly ionic in character

Question 54

54. Organic compounds are soluble in all except

Question 55

55. An alkene forms isomers if the number of carbon atoms is at least

Question 56

56. Either show the phenomenon of

Answer

Functional group isomerism

Answer

Cis-trans isomerism

Answer

Metamerism

Answer

Position isomerism

Question 57

57. A π (pi) bond is the result of the

Answer

Overlap of an s and a p orbital

Answer

Overlap of two p orbitals along their axes

Answer

Overlap of two s orbitals

Answer

Sidewise overlap of two parallel p orbitals

Question 58

58. Which of the following is complex?

Answer

C₆H₁₂O₆

Answer

CaSO₄. 0.5H₂O

Answer

(C₆H₁₀O₅)n

Question 59

59. Which statement is true regarding reactivity?

Answer

Double and is stronger than single bond hence alkenes are less reactive than alkanes

Answer

Alkenes do not undergo addition reactions

Answer

Alkene decolourize bromine solution and Baeyer’s reagents but alkynes do not

Answer

Towards the addition reaction alkenes are more reactive than alkynes

Question 60

60. Peat before conversion to bituminous coal is converted to

Answer

Anthracite

Question 61

61. The F-S-F bond angles in SF₆ are ___________.

Answer

90° and 180°

Answer

45° and 90°

Answer

90° and 120°

Answer

120° only

Question 62

62. There is no direct test for the detection of one of the following is an organic compound. Which is it?

Question 63

63. Furan is a give membered ring in which one position is occupied by

Question 64

64. Which of the following contains single bonds?

Answer 123

Methyl alcohol

Answer 124

Ethyl alcohol

Answer 125

Ethyl hydrogen sulphate

Answer 126

Methyl hydrogen sulphate

Answer 127

C₂H₂Cl₂

Answer 128

Functional group

Answer 129

Homologous series

Answer 130

Chemical bonding

Answer 131

Ionic complex

Answer 132

All of these

Answer 133

It is less stable

Answer 134

It is more stable

Answer 135

The molecule is asymmetrical around C – C bond

Answer 136

The molecule is symmetrical around C – C

Answer 137

Isomerization

Answer 138

Condensation

Answer 139

Polymerization

Answer 140

Having different M.P.

Answer 141

Having different B.P.

Answer 142

Having different chemical properties

Answer 143

Having different physical states

Answer 144

In which each carbon is attached at least with three other carbon atoms

Answer 145

Not in a series

Answer 146

In which atoms of C are in a series

Answer 147

None of these

Answer 148

The bond angle is 109.5°

Answer 149

Alkanes possess three groups attached to each carbon

Answer 150

0¯ bond is stronger than A-bond

Answer 151

0¯ bond required less energy to be rotated

Answer 152

NO₂¯ - trigonal palnar

Answer 153

ClO₃¯-tetrahedral

Answer 154

SO₃²¯ - pyramidal

Answer 155

ClO₄¯ - tetrahedral

Answer 156

Pb is difficult to obtain in bulk qualities

Answer 157

It is costly

Answer 158

It damages the engine

Answer 159

The combustion product, lead causes air pollution

Answer 160

Ethanoic acid

Answer 161

Compounds of S

Answer 162

Saturated hydrocarbons

Answer 163

Unsaturated hydrocarbon

Answer 164

Metamerism

Answer 165

Position isomerism

Answer 166

cis – trans isomerism

Answer 167

Functional group isomerism

Answer 168

Square planer

Answer 169

Tetrahedral

Answer 170

Ionic properties

Answer 171

Carbon forming long chain or rings

Answer 172

Chemical forces

Answer 173

PH₄⁺ - tetrahedral

Answer 174

ClO₂ - angular

Answer 175

SiCl₆²¯ -trigonal bipyramidal

Answer 176

NH₄⁺ - tetrahedral

Answer 177

+NH₂ group

Answer 178

- OH group

Answer 179

-CH₃ group

Answer 180

-CHO group

Answer 181

None of these

Answer 182

Type of Bonding

Answer 183

Shape and Type of bonding

Answer 184

n – Hexane

Answer 185

iso – octane

Answer 186

n – Heptane

Answer 187

In glass industry

Answer 188

Sugar industry

Answer 189

Domestic use

Answer 190

Bake bricks

Answer 191

Thermal cracking

Answer 192

Catalytic cracking

Answer 193

Stem cracking

Answer 194

Normal cracking

Answer 195

Polymerization

Answer 196

Carbonization

Answer 197

Hybridization

Answer 198

Isomerisation

Answer 199

Chain isomerism

Answer 200

Cis – trass isomerism

Answer 201

Position isomerism

Answer 202

Metamerism

Answer 203

NF₃ - trigonal planar

Answer 204

H₂O - bent

Answer 205

BF₃ - trigonal planar

Answer 206

AsF₅ - trigonal bipyramidal

Answer 207

Dehydrogenation

Answer 208

Dehydration

Answer 209

Neo-Pentane

Answer 210

Neo-octane

Answer 211

The same viscosity

Answer 212

The same vapour density

Answer 213

Same molecular weights

Answer 214

Different molecular weights

Answer 215

Having different B.P.

Answer 216

Having different chemical properties

Answer 217

Having different M.P.

Answer 218

Having different physical states

Answer 219

None of these

Answer 220

Alkylation

Answer 221

Sulphonation

Answer 222

Sulphonation

Answer 223

Alkylation

Answer 224

Reaction with alcoholic KOH

Answer 225

Reaction with aq KOH

Answer 226

Substitution reactions

Answer 227

Polymerization

Answer 228

Condensation reactions

Answer 229

Addition reactions

Answer 230

1 band pair 3 lone pair

Answer 231

2 band pair 2 lone pair

Answer 232

3 lone pair 1 bond pair

Answer 233

3 band pair one lone pair

Answer 234

Homocyclic

Answer 235

Monocyclic

Answer 236

Heterocyclic

Answer 237

None of these

Answer 238

Ammonium cyanate

Answer 239

Dimethyl ether

Answer 240

Diethyl ether

Total Questions:	119
Time Allowed:	60 Minutes
Total Marks:	119
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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