Attention Users: For systematic learning, please prefer to check the index page of the Forensic Toxicology MCQs Page. Here, we listed all the MCQs based on the NTA UGC syllabus.
1. The following Alkaloid is present in Opium:
- Brucine
- Codeine
- Atropine
- Strychnine
Answer an Explanation
Answer: (2) Codeine
Explanation: The active principle of opium are (alkaloids):
-> Morphine (about 10 %)
-> Papaverine (small quantity)
-> Codeine (small quantity)
2. Following is a stimulant drug
- Benzodiazepine
- Cocaine
- Opium
- Barbiturate
Answer an Explanation
Answer: (2) Cocaine
3. Which of the following substance of opium is used in Cough Syrups?
- Morphine
- Codeine
- Thebaine
- Papaverine
Answer an Explanation
Answer: (2) Codeine
Explanation: Codeine affects the signals in the brain that trigger the cough reflex. However, Dextromethorphan (DXM) is one of the most commonly used chemicals that is used for making cough syrups.
4. THC9 is found in the following:
- Solanaceae
- Oleander
- Cannabis Sativa
- Marking nut
Answer an Explanation
Answer: (3) Cannabis Sativa
Explanation:
-> In cannabis plants (cannabis Indica or Cannabis Sativa) the active principle is Delta-9-tetrahydrocannabinol.
-> Oleander is a flowering bush that is toxic because its active principle is oleandrin.
-> Dhatura active principles are hyoscine (scopolamine), hyoscyamine, and atropine.
-> Marking Nut’s main active principles are Semecarpol and bhilawanol.
References: Antioxidant Potentials and Pharmacological Activities of Marking Nut (Semecarpus Anacardium L.f.)
5. Match the following:
| List-I | List-II |
| (a) Reinsch’s Test | (i) Datura |
| (b) Alkaline Beam Test | (ii) Arsenic |
| (c) Vitalis Test | (iii) Morphine |
| (d) Marqui’s Test | (iv) Hash oil |
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (ii) | (iii) | (i) | (iv) |
| 3. | (iii) | (i) | (ii) | (iv) |
| 4. | (ii) | (iv) | (i) | (iii) |
Answer an Explanation
Answer: (4) (ii), (iv), (i), (iii)
Explanation:
-> Reinsch test: For the presence of heavy metals such as arsenic, antimony, bismuth, and mercury.
-> Alkaline Beam test: For the detection of cannabis and its derivates such as hash oil.
-> Vitali-Morin test: For the detection of Solanaceae family including datura.
-> Marquis test: For the detection of opiates (morphine) and amphetamines.
6. Which of the following insecticides is of vegetable origin?
- Pyrethrins
- D.D.T.
- Eldrin
- Malathion
Answer an Explanation
Answer: (1) Pyrethrins
Explanation:
-> Pyrethrins are organic compounds derived from Chrysanthemum cinerariifolium (Pyrethrum).
-> D.D.T. (Dichlorodiphenyltrichloroethane) is made from the reaction of chloral with chlorobenzene in the presence of sulfuric acid.
-> Aldrin is manufactured by the reaction of hexachlorocyclopentadiene with bicycloheptadiene.
-> Malathion is a pesticide manufactured by the addition of dimethyl dithiophosphoric acid to diethyl maleate or diethyl fumarate.
7. The following are the active constituents of papaverum somniferum
(i) Calatropin (ii) Codein (iii) Papavarine (iv) Hyocyamine
Codes
- (i) and (ii) are correct
- (ii) and (iii) are correct
- (iii) and (iv) are correct
- (i) and (iv) are correct
Answer an Explanation
Answer: (2) (ii) and (iii) are correct.
Explanation:
-> Papaver somniferum (opium poppy) has six major active constituents including morphine, narcotine, codeine, thebaine, papaverine, and narceine.
-> Calotropin is a toxic cardenolide found in plants in the family Asclepiadoideae.
-> Hyoscyamine is derived from the plants of Solanaceae (nightshades) family like Dhatura.
8. The following is a poisonous mushroom species:
- Amanita phalloides
- Morchella esculenta
- Boletus edulis
- Cantharellus cibarius
Answer an Explanation
Answer: (1) Amanita phalloides
Explanation: There are more than 80 species of mushrooms that are poisonous. The most common and toxic mushrooms are:
(1) Death Cap (Amanita phalloides): because of amatoxins (especially α-amanitin)
(2) Conocybe filaris
(3) Webcaps (Cortinarius species)
(4) Autumn Skullcap (Galerina marginata)
(5) Destroying Angels (Amanita species)
(6) Podostroma cornu-damae
(7) Deadly Dapperling (Lepiota brunneoincarnata)
9. The active ingredients of cannabis are collectively known as
- Cannabinoids
- Annabinoids
- Cannazoids
- Cannatedois
Answer an Explanation
Answer: (1) Cannabinoids
Explanation: The active main ingredients of cannabis are δ-9-tetrahydrocannabinol (THC) and benzopyrene in small quantities (a known carcinogen commonly found in tobacco). All these active ingredients are fat-soluble oleoresin cannabinoids.
10. For preparing Heroin which of the following is used as an acetylating reagent?
- Acetic anhydride
- Sodium hydroxide
- Ammonium hydroxide
- None of the above
Answer an Explanation
Answer: (1) Acetic anhydride
Explanation: Heroin is a semi-synthetic narcotic analgesic drug prepared by the chemical reaction of morphine with acetic anhydride (an acetylating agent).
11. Lysergic acid is found in
- Ergot fungus
- Psilocybe Mexicana
- Lophophora Williamsii
- Argimoni wexicanna
Answer an Explanation
Answer: (1) Ergot fungus
Explanation: Lysergic acid is the ergoline alkaloid produced by the ergot fungus that is present in the seeds of Turbina corymbosa, Argyreia Nervosa (Hawaiian Baby Woodrose), and Ipomoea tricolor (morning glories).
12. Following is/are the active principle of Abrus:
- Abrin
- Adbrin
- Abrinine
- All of the above
Answer an Explanation
Answer: (1) Abrin
Explanation: Abrus is a herbaceous flowering plant commonly known as jequirity bean or rosary pea whose seeds contain the active principle Abrin— an extremely toxic toxalbumin.
13. The level of toxicity of Dhatura plant on the basis of increasing level is
- Root, Seeds, Fruit, Leaf
- Leaf, Root, Fruit, Seeds
- Fruit, Root, Seeds, Leaf
- Seeds, Leaf, Root, Fruit
Answer an Explanation
Answer: (2) Leaf, Root, Fruit, Seeds
Explanation: Other names of the Dhatura plant are Datura Stramonium, Thorn Apple, and Jimson Weed. And the toxic principles of Dhatura are atropine, scopolamine, and hyoscyamine which are most potent in the seeds.
-> The increasing level of toxicity of the Datura plant is Leaf, Root, Fruit, Seeds (dhatura Leaf falls to the plant’s Root besides a grape Fruits that has no Seeds)
14. Following is the active component of marking nut:
- Semicarpol
- Semicarpine
- Semicarbine
- Semicarmine
Answer an Explanation
Answer: (1) Semicarpol
Explanation: Marking Nuts (Semecarpus Anacardium, or Bhilawa) seeds are black, cone heart-shaped with a rough projection at the base whose extract contains (majorly) have two active principles— Semecarpol and bhilawanol.
-> The extracted juice is used by laundries to mark the identification number on clothes. Moreover, they are also used to create artificial bruises.
15. Cannabis sativa contains the following principal constituents
(a) Cannabinol (b) Strychnine (c) Hyosciene (d) Tetra hydro cannabinol
- (a) and (b) are correct
- (a) and (c) are correct
- (a) and (d) are correct
- (b) and (c) are correct
Answer an Explanation
Answer: (3) (a) and (d) are correct
Explanation: The active main ingredients of cannabis are δ-9-tetrahydrocannabinol (THC), and benzopyrene in small quantities (a known carcinogen commonly found in tobacco). All these active ingredients are fat-soluble oleoresin cannabinol.
16. Which of the following is a plant protein?
- Lectins
- Actin
- Mycin
- All of the above
Answer and Explanation
Answer: (1) Lectins
Explanation: A lectin, also known as the “antinutrient” is a type of protein that binds to certain carbohydrates.
-> Sources: found in all plants, but raw legumes (beans, lentils, peas, peanuts) and whole grains (like wheat) have higher concentrations of lectins.
17. Hawaiian Baby Woodrose plant is associated with which of the following drugs of abuse
- Lysergic acid diethylamide
- Cocaine
- Methcathinone
- Phencyclidine
Answer and Explanation
Answer: (1) Lysergic acid diethylamide
Explanation: Synthesis of Lysergic Acid Diethylamide (LSD) is produced from an ergot alkaloid isolated from certain species of “morning glory” or “Hawaiian Baby Woodrose” plants.
Note: Jump to Main Page of Forensic MCQs in Toxicology