MCQ ON POLY NUCLEAR HYDROCARBON (PAH)(PHENANTHRENE,ANTHRACENE,NAPHTHALENE)AND ITS DERIVATIVES.
1.Naphthalene is the largest single component of which coal-tar fraction? a) Light oil b) Middle oil c) Heavy oil d) Anthracene oil Answer: b) Middle oil Explanation: Naphthalene is obtained mainly by cooling the middle oil fraction (160–230°C) during coal-tar distillation, where it crystallizes out. 2.Which position does naphthalene most readily undergo electrophilic substitution? […]
MCQ ON AROMATIC CARBOXYLIC ACID(BENZOIC ACID)
What is the pKa value of benzoic acid? A) 3.19 B) 4.19 C) 5.19 D) 2.19 Answer: B Explanation: Benzoic acid has a pKa of 4.19, indicating it is a weak acid. Why are aromatic carboxylic acids generally more acidic than aliphatic carboxylic acids? A) Due to +I effect of the alkyl chain B) Resonance […]
GASTROINSTETINAL AGENTS(INORGANIC)
What Are Gastrointestinal Agents? Gastrointestinal (GI) agents are the drugs used to treat digestive system disorders affecting the esophagus, stomach, and intestines. These are worked through various mechanisms including acid modulation, mucosal protection, and digestive tract motility regulation. Types of Gastrointestinal Drugs: Classifications & Uses Stomach Acidifiers: Treating Acid Deficiency Conditions What are acidifiers? Acidifiers are the agents used […]
MCQ PRACTICE SET ON PHENOL
Which of the following is the most common industrial method for the preparation of phenol? Hydrolysis of chlorobenzene Oxidation of cumene Decarboxylation of salicylic acid Hydrogenation of benzene What is the name of the reaction that involves the reaction of phenol with chloroform in the presence of sodium hydroxide? Kolbe’s reaction Reimer-Tiemann reaction Wurtz reaction […]
MCQ ON AROMATIC HYDROCARBON(BENZENE)
Molecular formula of benzene is: a) C6H14 b) C6H12 c) C6H6 d) C5H6 Answer: c Which ratio of carbon:hydrogen led to benzene’s unsaturation prediction? a) 1:1 b) 2:1 c) 1:1.33 d) 1:1.5 Answer: c Benzene on catalytic hydrogenation gives: a) Cyclohexane b) Cyclohexene c) Cyclopentane d) Cyclohexadiene Answer: a The number of π-electrons in […]
MCQ ON PHARMACEUTICAL ANALYSIS
Pharmaceutical analysis primarily involves: a) Designing drug delivery systems b) Detection, identification and quantification of compounds c) Performing clinical trials d) Manufacturing processes Answer: b Which technique is mainly qualitative? a) Volumetric titration b) Gravimetry c) Spot tests and colour tests d) Potentiometry Answer: c Which technique is mainly quantitative? a) Thin layer […]
MCQ ON CYCLOALKANE
Which of the following is the general formula of cycloalkanes? a) CnH2n+2 b) CnH2n c) CnH2n-2 d) CnHn Answer: b) CnH2n What is the first member of the cycloalkane series? a) Cyclobutane b) Cyclopropane c) Cyclopentane d) Cyclohexane Answer: b) Cyclopropane Cycloalkanes are also known as: a) Aromatic compounds b) Cycloparaffins c) Cycloalkenes d) Alkynes […]
MCQ ON PHARMACEUTICAL INORGANIC CHEMISTRY
Which of the following is used as a respiratory stimulant? A) Sodium chloride B) Ammonium carbonate ✅ C) Calcium gluconate D) Sodium fluoride What is the mechanism of action of Ammonium carbonate? A) Central depression B) Reflux stimulation of respiratory tract ✅ C) Enzyme inhibition D) Protein synthesis Sodium fluoride is used as: A) Laxative […]
LIMIT TEST FOR ARSENIC
The pharmacopoeial limit test of arsenic is a qualitative comparative test bsed on Gutzeit test in which arsenic impurity present in the sample is reduced to arsine gas and then it is passed through on mercuric chloride paper as a yellow to brown stain, Which is compared against prepared standard stain as prescribe by Pharmacopoiea.If […]
History of Medicinal Chemistry.
Medicinal chemistry is an interdisciplinary subject of science which combines organic chemistry, pharmacology, biochemistry, and molecular biology to design, synthesize, and able to develop pharmaceutical compounds. The history of medicinal chemistry arises from ancient herbal remedies to modern rational drug design,It reflects the mankind’s constant attempt to understanding and treat illnesses by chemical treatments. 1.Ancient […]