Aqueous layer in the in separating of alkaloid defined as :
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12%
have alkaloidal salt
14%
acidic layer
9%
contain neutral alkaloids
46%
A&B
20%
C&A
after break the alkaloid salt, by add NH3 then add ethyl acetate so will it separate into two layers the Organic layer defined as :
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11%
For week or neutral alkaloids
22%
For basic alkaloid 1° ,2°,3°
10%
For quaternary alkaloids 4°
29%
A&B
29%
B&C
😢4
What is the correct order of the solubility of the following compounds from most to least?
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16%
Benzene, hexane , ether, ethyl acetate, methanol, acetone.
7%
Benzene, ether, hexane , ethyl acetate, methanol, acetone.
64%
Hexane , benzene, ether, ethyl acetate, methanol, acetone.
4%
Ethyl acetate, methanol, acetone, hexane , benzene, ether.
10%
Hexane ,ethyl acetate, benzene, ether, methanol, acetone.
Which of the folloiwng is true about steam distillation:
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10%
It is used in rare cases, for solid alkaloids, e.g.caffeine, nicotine & sparteine.
78%
It is used in rare cases, for liquid alkaloids, e.g.coniine, nicotine & sparteine.
5%
It is used in rare cases, for liquid alkaloids, e.g.coniine, atropine & sparteine.
7%
non of the following
a rich source of alkaloids,
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2%
Animals
93%
Plants
3%
Fungi
1%
Parasites
1%
None of them
😱1
a rich source of alkaloids,..
And some of them found in
And some of them found in
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13%
Bacteria , fungi ,plants
4%
Plants , parasites , insects
57%
Plants, animals ,fungi and bacteria
26%
All of them
Most alkaloids possess basic properties, due to the presence of
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3%
Amino oxygen
87%
Amino nitrogen
1%
Amino chloride
9%
All of them
In spite of the difficulties attending a precise definition, the term is an extremely useful one, commonly applied to
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87%
basic nitrogenous compounds of plant origin which are physiologically active.
4%
Not basic nitrogenous compounds of plant origin which are physiologically active.
5%
basic nitrogenous compounds of plant origin which are not physiologically active.
5%
basic nitrogenous compounds of plant origin which are physiologically less active.
Distribution of alkaloids is angiosperms
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51%
Papaveraceae
1%
Myrtaceae
6%
Asteraceae
42%
All above
Distribution of alkaloids are the
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17%
angiosperms
12%
the gymnosperms only rarely contain them (Taxaceae).
2%
The monocotyledons do not generally produce alkaloids
69%
All above
Protoalkaloids are also called as:
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74%
a) Amino alkaloid
2%
b) Pseudo alkaloid
6%
c) True alkaloid
18%
d) Extra alkaloid
Who first coined the name “Alkaloids"?
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9%
a) S.W. Pelletier
83%
b/ Fredrich
4%
c) Karl Fredrich Wilhelm Meissner
3%
d) Joseph Caventou
Wagner reagent contains:
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69%
a. lodine + KI water
15%
b. KI+ bismuth iodide
9%
c. lodine
7%
d. Mercuric chloride + KI in water
Picric acid is a chemical composition
of:
of:
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13%
a. Van urk's reagent
7%
b. Mayer reagent
75%
c. Hager's reagent
5%
d. Wagner's reagen
Which of the following is the property of an alkaloid?
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5%
A.Acidic Nitrogen Compound
87%
B.Basic Nitrogen Compound
5%
C.Neutral Nitrogen Compound
2%
D.Volatile Nitrogen Compound
Which of the following is NOT an example of Liquid Alkaloid?
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8%
A. Sparteine
3%
B.Coniine
6%
C. Nicotine
82%
D.Atropine
💔2
Another name for Potassium mercuric iodide solution used for alkaloid chemical test?
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6%
A/Wagners Reagent
84%
B. Mayer's Reagent
5%
C.Hager's Reagent
4%
D.Sonnenschein Reagent
Which of the following is CORRECT for Murexide test?
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73%
A. Caffeine + Hcl + KCI3
13%
B.Caffeine + H2SO4 + KCI3
9%
C.Caffeine + HNO3 + Br2
4%
D.Caffine + H2 + N2
Nuxvomica and areca extracted from?
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11%
A.Roots
2%
B.Bark
84%
C.Seed
3%
D.Flowering buds