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Organic Chemistry Test

Description: This test is based on the certain topics from organic chemistry.
Number of Questions: 25
Created by:
Tags: Alcohols atoms elements ethers etc. Advanced Materials Classification of Drugs Chemicals in Medicine and Health-Care Therapeutic Action of Different Classes of Drugs
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In which of the following processes, the propagation of explosive material is done through a flame front?

  1. Decomposition

  2. Deflagration

  3. Detonation

  4. None of these


Correct Option: B
Explanation:

In deflagration, the decomposition of the explosive material is propagated by a flame front, which moves slowly through the explosive material in contrast to detonation. Deflagration is a characteristic of low explosive material.

Which of the following is the gas-forming component in car airbag systems?

  1. Tetrazine

  2. Sodium azide

  3. Silver fulminate

  4. Silver azide


Correct Option: B
Explanation:

Sodium azide is the inorganic compound with the formula NaN3. This colourless azide salt is the gas-forming component in many car airbag systems. It is used for the preparation of other azide compounds. It is an ionic substance and is highly soluble in water. It is extremely toxic.

An explosive is defined as a material (chemical or nuclear) that can be initiated to undergo very rapid, self-propagating decomposition. Which among the following is a heat and shock sensitive high explosive?

  1. Lead styphnate

  2. Lead azide

  3. Diazodinitrophenol

  4. Copper(I) acetylide


Correct Option: D
Explanation:

Copper(I) acetylide or cuprous acetylide, is an inorganic chemical compound with the formula Cu2C2. It is a heat and shock sensitive high explosive. It is more sensitive than silver acetylide. It is a metal acetylide.

------------------- explosives require small amount of energy for initiation.

  1. Primary

  2. Secondary

  3. Tertiary

  4. Low


Correct Option: A
Explanation:

A primary explosive is an explosive that is extremely sensitive to stimuli such as impact, friction, heat, static electricity, or electromagnetic radiation. A relatively small amount of energy is required for initiation.

It is prepared by nitration of toluene. Which among the following can replace TNT?

  1. Gunpowder

  2. Flash powder

  3. Ammonal

  4. Armstrong's mixture


Correct Option: C
Explanation:

Ammonal is an explosive made up of ammonium nitrate, trinitrotoluene (TNT), and aluminium powder. Ammonium nitrate functions as an oxidizer and aluminium as a power enhancer. To some extent,  aluminium makes it more sensitive to detonation. The use of the relatively cheap ammonium nitrate and aluminium makes it a replacement for pure TNT.

Which of the following compounds is not used as an explosive?

  1. Ammonium permanganate

  2. Copper(I) acetylide

  3. Ammonium acetate

  4. Diazodinitrophenol


Correct Option: C
Explanation:

Ammonium acetate is a white solid, which can be derived from the reaction of ammonia and acetic acid. It is available commercially and depending on grade, can be rather inexpensive. It is not an explosive. NH4C2H3O2 is occasionally employed as a biodegradable de-icing agent.

Among the following organic compounds, -------------------- is occasionally used as a perfume additive.

  1. nItrobenzene

  2. trinitrotoluene

  3. nitromethane

  4. gasoline


Correct Option: A
Explanation:

Nitrobenzene is a water-insoluble pale yellow oil with an almond-like odour. It freezes to give greenish-yellow crystals. Although occasionally used as a flavouring or perfume additive,. Nitrobenzene is highly toxic in large quantity. 

The exposure of a painted object to strong sunshine may cause

  1. chalking

  2. cracking

  3. erosion

  4. blistering


Correct Option: D
Explanation:

Blistering is due to improper surface exposure of paint to strong sunshine.

Among the following, the moisture sensitive explosive is

  1. RDX

  2. PETN

  3. HMX

  4. HHTDD


Correct Option: D
Explanation:

HHTDD is a powerful but moisture sensitive explosive compound. It is essentially an open analogue of the cyclic nitroamine cage compounds such as CL-20. HHTDD readily decomposes in the presence of even trace amounts of water, making it unsuitable for any practical applications.

Casein is a type of a protein. It is present in -------------------- type of paint.

  1. Oil paint

  2. Milk paint

  3. Acrylic paint

  4. Poster paint


Correct Option: B
Explanation:

Milk paint is a non-toxic water based mixture used as a paint. It is made from milk and lime with or without pigments added for colour. Borax is added in addition to lime in the milk paint recipe to assist the lime in dissolving casein and as a preservative.

Which among the following is a fluid applied membrane having elastic properties?

  1. Titanium dioxide

  2. Roof coating

  3. Wood stain

  4. Anti-graffiti coatings


Correct Option: B
Explanation:

A roof coating is a fluid applied membrane which has elastic properties that allows it to stretch and return to its original shape without damage. It provides UV protection to polyurethane foam and is widely used as part of a roof restoration system.

Which of the following explosives is used to trigger other explosives ?

  1. Nitrogen triiodide

  2. Nitrogen trichloride

  3. Mercury(II) fulminate

  4. Lead picrate


Correct Option: C
Explanation:

Mercury(II) fulminate, Hg(CNO)2, is a primary explosive. It is highly sensitive to friction and shock. It is mainly used as a trigger for other explosives in percussion caps and blasting caps.

Stimulant is an agent which temporarily arouses or accelerates physiological or organic activity of the organism.The stimulant found in tea and coffee is

  1. caffeine

  2. nicotine

  3. amphetamines

  4. methylphenidate


Correct Option: A
Explanation:

Caffeine is a mild stimulant compound that is found naturally in coffee, tea and to a lesser degree, in cocoa or chocolate. It is included in many soft drinks, as well as a larger amount in energy drinks.

Which of the following explosives is made from a mixture of liquid oxygen with a suitable fuel such as carbon aluminium powder?

  1. ANFO

  2. Cheddite

  3. Oxyliquit

  4. Panclastites


Correct Option: C
Explanation:

An oxyliquit, also called liquid air explosive or liquid oxygen explosive, is an explosive material made of a mixture of liquid air or liquid oxygen (LOX) with a suitable fuel, usually carbon (as lampblack) or some organic chemical (e.g., a mixture of soot and naphthalene), wood meal, or aluminium powder or sponge.

Drugs, both medicinal and recreational, can be administered in a number of ways. In ------------------ method, a drug diffuses in the blood through the tissues under the tongue.

  1. bolus

  2. injection

  3. insufflation

  4. sublingual


Correct Option: D
Explanation:

Sublingual refers to the pharmacological route of administration by which drugs diffuse into the blood through tissues under the tongue. Many pharmaceuticals are designed for sublingual administration, including cardiovascular drugs, steroids, barbiturates, enzymes, and increasingly, vitamins.

Among the following drugs -------------------- is used for the management of cardiac disorders.

  1. antihistamine

  2. antipsychotic

  3. beta blockers

  4. dissociatives


Correct Option: C
Explanation:

Beta blockers are a class of drugs used for various indications, but particularly for the management of cardiac arrhythmias, cardioprotection after myocardial infarction (heart attack), and hypertension.

The nonbenzodiazepines are a class of psychoactive drugs. Which among the following is not a nonbenzodiazepines ?

  1. Carisoprodol

  2. Zaleplon

  3. Zolpidem

  4. Zopiclone


Correct Option: A
Explanation:

Carisoprodol is a centrally-acting skeletal muscle relaxant. Carisoprodol is slightly soluble in water and freely soluble in alcohol, chloroform and acetone.

A muscle relaxant affects the skeletal muscle function and decreases the muscle tone. Among the following ----------------------- is a muscle relaxant .

  1. dextromethorphan

  2. ketamine

  3. phencyclidine

  4. cyclobenzaprine


Correct Option: D
Explanation:

Cyclobenzaprine is a muscle relaxant medication used to relieve skeletal muscle spasms and associated pain in acute musculoskeletal conditions.It is the most well-studied drug for this application, and it also has been used off-label for fibromyalgia treatment.

The original antipsychotic drugs were discovered by chance and then tested for their effectiveness. Which of the following is an antipsychotic drug?

  1. Propranolol

  2. Atenolol

  3. Chlorpromazine

  4. Doxylamine


Correct Option: C
Explanation:

Chlorpromazine is a typical antipsychotic. It works on a variety of receptors in the central nervous system, producing anticholinergic, antidopaminergic, antihistaminic, and weak antiadrenergic effects.

The paints protect, colour or provide texture to objects. Among the following paints, --------------------- makes the objects extremely slippery.

  1. anti-fouling paint

  2. anti-climb paint

  3. fingerpaint

  4. enamel paint


Correct Option: B
Explanation:

Anti-climb paint is a non-drying paint that appears normal while still being extremely slippery. It is usually used on drainpipes and ledges to deter burglars and vandals from climbing them, and is found in many public places.

Paint is a liquid that converts into an opaque solid film after application. Which of the following substances decreases the drying time and increases the translucency of the paints?

  1. Primer

  2. Lacquer

  3. Varnish

  4. Glaze


Correct Option: D
Explanation:

A glaze is an additive used with paint to slow drying time and increase translucency, as in faux painting and Art Painting.

Many drugs can be administered in a variety of ways rather than just one. Which of the following methods of drug administration is commonly referred to as a drip?

  1. Intramuscular

  2. Intravenous

  3. Intraperitoneal

  4. Intraosseous


Correct Option: B
Explanation:

Intravenous therapy or IV therapy is the giving of substances directly into a vein. Therapies administered intravenously are often called specialty pharmaceuticals. It is commonly referred to as a drip because many systems of administration employ a drip chamber, which prevents air entering the blood stream (air embolism) and allows an estimate of flow rate.

A purine is a colourless crystalline solid which can be prepared from uric acid. Which of the following is a purine derivative?

  1. Xanthine

  2. Hypoxanthine

  3. Xanthosine 5'-triphosphate

  4. Guanine


Correct Option: B
Explanation:

Hypoxanthine is a naturally occurring purine derivative. It is occasionally found as a constituent of nucleic acids where it is present in the anticodon of tRNA in the form of its nucleoside inosine. It has a tautomer known as 6-Hydroxypurine. Hypoxanthine is a necessary additive in certain cell, bacteria, and parasite cultures .

The cognition and perception altering drugs are known as

  1. Psychedelic drugs

  2. Stimulants

  3. Opoids

  4. Deliriants


Correct Option: A
Explanation:

A psychedelic substance is a psychoactive drug whose primary action is to alter cognition and perception. Psychedelics are part of a wider class of psychoactive drugs known as hallucinogens, a class that also includes related substances such as dissociatives and deliriants.

An anticholinergic drug blocks the neurotransmitter acetylcholine in the central and the peripheral nervous system. Which of the following can be excluded from the category of anticholinergic drugs?

  1. Atropine

  2. Diphenhydramine hydrochloride

  3. Hyoscyamine

  4. Scopolamine


Correct Option: B
Explanation:

Diphenhydramine hydrochloride is a first-generation antihistamine mainly used to treat allergies.It has a powerful hypnotic effect, and for this reason is often used as a nonprescription sleep aid and a mild anxiolytic.

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