| 1 |
Kolb's method has limited synthetic applications due to
|
A. Expensive catalysis
B. Slow reaction
C. Number of side products produced
D. Salts used are very expensive
|
| 2 |
The method involved for electrolysis of Na or K salts of carboxylic acids
|
A. Sabatier's sendrens reaction
B. Kolbe's method
C. Clemmensen
D. Wolf kishner reduction
|
| 3 |
The presence of a double bond in a compound in the sign of:
|
A. Saturation
B. Unsaturation
C. Subsitution
D. None
|
| 4 |
Benzene has a -------- structure
|
A. Pentagonal
B. Hexagonal
C. Heptagonal
D. Tetragonal
|
| 5 |
Hydrocarbon which is liquid at room temperature is
|
A. Pentane
B. Butane
C. Propane
D. Ethane
|
| 6 |
During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be
|
A. H2SO4
B. Ni
C. Fe2O3
D. Al2O3
|
| 7 |
Which one of the following gases is used for artificial ripening of fruits ?
|
A. Ethane
B. Ethyne
C. Methane
D. Propane
|
| 8 |
Which one gives acidic reactions?
|
A. CH3----C≡C-------CH3
B. CH3-----CH2-----HC=CH----CH2
C. CH3----CH=CH2
D. CH3-----C≡CH
|
| 9 |
Zn + HCI are used in
|
A. Clemenson reduction
B. Wof kishner reduction
C. Kolb's electrolysis
D. Wutruz reaction
|
| 10 |
During nitration of benzene, the active nitrating agent is
|
A. NO3
B. NO2+
C. NO2-
D. HNO3
|
| 11 |
An alkynes having Carbon count of 20 is
|
A. gas
B. liquid
C. Solid
D. None
|
| 12 |
The difference between amount of heat actually released and that of calculated is called
|
A. Bonding energy
B. Activation energy
C. Resonance energy
D. Transition energy
|
| 13 |
Benzene reacts with ozone and gives
|
A. Glycerin
B. Glyoxal
C. Maleic anhydride
D. Benzoic acid
|
| 14 |
A six membered ring containing one double bond called
|
A. Cyclohexene
B. Cyclohexane
C. Cyclohexadiene
D. None
|
| 15 |
Hydrocarbons are organic compounds which contain elements such as
|
A. Hydrogen
B. Carbon
C. Hydrogen and carbon
D. Halogens
|
| 16 |
When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as
|
A. Cannizaro reaction
B. Sabatier-secderens reaction
C. Alkylation
D. Kolbe's reaction
|
| 17 |
Physical properties of alkanes increase with increase of all physical constants except
|
A. Boiling points
B. Melting points
C. Density
D. Solubility
|
| 18 |
The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is
|
A. Hydrolysis
B. Electrolysis
C. Hydrogenation
D. Hydrogenolysis
|
| 19 |
The empirical formula of benzene is determined by
|
A. IR spectra
B. U.V
C. Elemental analysis
D. NMR spectra
|
| 20 |
Which is the used as test for the presence of alkenes
|
A. Reaction of cold dilute alkaline KMnO4
B. Combustion
C. Polymerization
D. Catalytic hydrogenation
|
| 21 |
Vinyl acetylene combines with HCl to form:
|
A. Polyacetylene
B. Benzene
C. Chloroprene
D. Divinyl acetylene
|
| 22 |
The presence of a double bond in a compound is the sign of
|
A. Saturation
B. Unsaturation
C. Substitution
D. None of above
|
| 23 |
The compound prepared by a substitution reaction of benzene is
|
A. Acetophenone
B. Glyoxal
C. Cyclohexame
D. Hexabromo cyclohexane
|
| 24 |
Aromatic hydrocarbons are the derivatives of
|
A. Normal series of paraffins
B. Alkene
C. Benzene
D. Cyclohexane
|
| 25 |
Which of the following substances is used as an antiknock compound?
|
A. Tetraethyl lead
B. Lead tetrachloride
C. Lead acetate
D. Ethyle acetate
|
| 26 |
Paraffins are also called
|
A. Alkanes
B. Alkynes
C. Alkenes
D. None of these
|
| 27 |
Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes
|
A. Elemination
B. Addition
C. Free radical substitution
D. Nucleophilic substation
|
| 28 |
Odour of alkene is:
|
A. Fruity
B. Odourless
C. Zarlic like
D. Irritating
|
| 29 |
Ethylene can be prepared in the laboratory by heating together ethyl alcohol and
|
A. HCI
B. Phenol
C. HF
D. H2SO4
|
| 30 |
Which is liquid among the following alkenes?
|
A. Ethane
B. Propene
C. Butene
D. Pentene
|