GPAT PYQs – Set 37

Year: 2015

724. How does the wetting agent act in a suspension?

Pharmaceutical Technology • Preformulation

A. Increase contact angle between substance and solvent B. Reduce contact angle between substance and solvent C. No change in contact angle D. None of the above

725. Which phase of a suspension is reversible?

Physical Pharmacy • Rheology + Kinetics & Drug Stability

A. Cracking B. Creaming C. Phase Inversion D. Coalescence

726. Which eye infection is also called ‘Pink Eye’ infection?

Microbiology • Complete Subject

A. Fungal keratitis B. Viral keratitis C. Conjunctivitis D. Myopia

727. The given reaction is an example of

Organic Chemistry • Name Reactions

A. Arndt-Eistert homologation B. Mannich reaction C. Michael addition D. Chichibabin amination reaction

728. What is the 6-methyl derivative of erythromycin?

Pharmacology • Antimicrobial Agents

A. Azithromycin B. Roxithromycin C. Clarithromycin D. Clindamycin

729. In the diagnosis of myasthenia gravis, only one drug is used as the drug of choice. Which one?

Pharmacology • Drugs Acting on Autonomic Nervous System

A. Neostigmine B. Pyridostigmine C. Physostigmine D. Edrophonium

730. Tetracycline in basic solution is unstable and forms which product?

Medicinal Chemistry • Rheology + Kinetics & Drug Stability

A. Epithetracycline B. Anhydrotetracycline C. Sotetracycline D. Doxycycline

731. Which of the following is oil of fruit pulp?

Pharmaceutical Technology • Emulsion

A. Arachis oil B. Castor oil C. Olive oil D. Apricot oil

732. What is true about bioavailability?

Biopharmaceutics • Bioavailability and Bioequivalence

A. Amount of unbound drug (free drug reaching systemic circulation) B. Amount of bound drug C. Amount of metabolite drug D. Amount of excreted drug

733. In the context of voltammetry, which of the following statements is false?

Pharmaceutical Analysis • Spectroscopy

A. Technique can be used to analyze organic compounds containing carbonyl groups B. Organic solvents cannot be used as aqueous‑organic mixtures in this technique C. Immunosensors are available in voltammetry D. A triangular waveform is used for excitation of solution in cyclic voltammetry

734. A series of β-acylureido penicillins like azlocillin, mezlocillin, and piperacillin are superior because of

Pharmacology • Antimicrobial Agents

A. Reduced acid hydrolysis B. Increased β-lactamase resistance C. Improved penetration through the cell envelope D. Slow rate of metabolism

735. Bacillus subtilis is used in the assay of which antibiotic?

Microbiology • Complete Subject

A. Penicillin B. Cephalosporin C. Vancomycin D. Streptomycin

736. Identify what is not a continuum source of radiation for use in absorption and fluorescence spectrophotometers:

Pharmaceutical Analysis • Spectroscopy

A. Argon arc lamp B. Hollow‑cathode lamp C. Deuterium lamp D. Xenon arc lamp

737. Inadequate drying during tablet coating leads to which coating defect?

Pharmaceutical Technology • Tablet

A. Chipping B. Lamination C. Mottling D. (Repeated option: Lamination)

738. Which plot indicates the effects of an antagonist on receptors?

Pharmacology • General Pharmacology

A. Michaelis-Menten plots B. Lineweaver-Burk plots C. Displacement plots D. Schild plots

739. All of the following statements concerning zero-order degradation are true except

Physical Pharmacy • Rheology + Kinetics & Drug Stability

A. Its rate is independent of concentration B. A plot of concentration vs. time gives a straight line C. Its half-life is a changing parameter D. Its concentration remains unchanged with time

740. The liquefaction time of cocoa butter in hydrogenated vegetable oil-based suppositories is

Pharmaceutical Technology • Semisolid + Suppository + Aerosol

A. 30–50 min B. 30–40 min C. 11–17 min D. 3–7 min

741. Which of the following is most likely to undergo lysis?

Microbiology • Complete Subject

A. A cell losing water from its cytoplasm B. A cell with intact, multilayer peptidoglycan cell wall C. A cell with disturbed pentaglycine bridges in its cell wall D. A cell with a hydrophilic outermost layer in its cell wall

742. Which micro-organism is used in hairy root culture?

Pharmacognosy • Introduction to Pharmacognosy

A. Agrobacterium rhizogenes B. A. tumefaciens C. Nicotiana tabacum D. Solanum chrysotrichum

743. Delayed disintegration in a tablet is a result of

Pharmaceutical Technology • Tablet

A. Large force of compression B. Small force of compression C. Higher amount of granules D. Low amount of granules

Disclaimer for MCQ Quiz
The questions in this MCQ quiz are intended solely for educational purposes. While we strive to ensure accuracy, the information may not always be up-to-date or complete. The creators are not liable for any errors or consequences. Verify any information before relying on it for critical decisions.

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GPAT PYQs – Set 37

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