Physical and Inorganic Chemistry PYQs – Set 160

By Atul Sahu • Physical and Inorganic Chemistry, Subject Wise PYQs

Physical and Inorganic Chemistry PYQs – Set 160

Subject : Physical and Inorganic Chemistry

3181. In Mier's theory of supersaturation, which solute's curve is used as a model?

Physical and Inorganic Chemistry • Solubility & Supersaturation • GPAT 2021

A. KNO3 B. NaCl C. MnSO4 D. None of the above

3182. As per IP, if the solubility range of a solute is 30 to 100 parts, it will be classified as

Physical and Inorganic Chemistry • Solubility Product and Ionic Equilibria • GPAT 2021

A. Soluble B. Freely soluble C. Sparingly soluble D. Slightly soluble

3183. What is the descending order of nucleophilic solvent strength?

Physical and Inorganic Chemistry • Solvent Properties • GPAT 2021

A. Trifluoroethyl alcohol, methanol, formic acid, acetic acid B. Formic acid, acetic acid, methanol, trifluoroethyl alcohol C. Methanol, formic acid, acetic acid, trifluoroethyl alcohol D. Methanol, acetic acid, formic acid, trifluoroethyl alcohol

3184. Range of C=O stretching in enols is typically around:

Physical and Inorganic Chemistry • Spectroscopy • GPAT 2021

A. 1800 cm⁻¹ B. 1710 cm⁻¹ C. 1685 cm⁻¹ D. 1655 cm⁻¹

3185. o-, m-, p-isomers can be differentiated on the basis of:

Physical and Inorganic Chemistry • Spectroscopy & Coupling • GPAT 2021

A. Chemical shift B. Coupling constant C. Extinction coefficient D. Dipole moment

3186. 0,m, p- isomers can be differentiated on the basis of

Physical and Inorganic Chemistry • Spectroscopy & Coupling • GPAT 2021

A. Chemical shift B. Coupling constant C. Extinction coefficient D. Dipole moment

3187. Which of these is not a colligative property?

Physical and Inorganic Chemistry • States of Matter + Micromeritics + Surface and Interfacial Tension • GPAT 2021

A. Osmotic pressure B. Depression of freezing point C. Elevation in boiling point D. Polymorphism

3188. What is the surface tension of water at 25°C?

Physical and Inorganic Chemistry • Surface and Interfacial Tension • GPAT 2021

A. 58 dyne/cm B. 68 dyne/cm C. 72 dyne/cm D. 82 dyne/cm

3189. Which statements are correct for micelle formation? (P) Micelles are dynamic structures that are continually formed and broken down in solution; (Q) The typical micelle diameter is about 2–3 μm; (R) Micelle formation is a spontaneous process; (S) When the surfactant concentration is increased above the CMC, the number of micelles increases and the free surfactant concentration decreases below CMC.

Physical and Inorganic Chemistry • Surface and Interfacial Tension • GPAT 2021

A. P and Q B. P and R C. P and S D. R and S

3190. The interfacial tension of Oleic acid against water at 20°C is:-

Physical and Inorganic Chemistry • Surface and Interfacial Tension • GPAT 2021

A. 15.6 B. 52.3 C. 428 D. 8.51

3191. Which statement about amorphous solids is incorrect:

Physical Pharmacy • Amorphous solids • GPAT 2021

A. Usually anisotropic B. Flow under pressure C. Considered supercooled fluids D. No definite melting point

3192. When 50 ml of sodium hydroxide (0.1 M) is added to 100 mL of 0.1 M acetic acid, pH of the resultant solution is ………

Physical Pharmacy • Buffer pH calculations • GPAT 2021

A. 8.58 B. 7.42 C. 4.74 D. 7.06

3193. Increasing the proportion of the disperse phase of an emulsion by more than 60% may lead to

Physical Pharmacy • Emulsion stability • GPAT 2021

A. Cracking B. Frothing C. Phase inversion D. Creaming

3194. Theories of emulsification are characterized by one of the following EXCEPT:

Physical Pharmacy • Emulsion stabilization theories • GPAT 2021

A. Film formation B. Phase inversion C. Monomolecular adsorption D. Solid particle adsorption

3195. HLB value of tragacanth is:-

Physical Pharmacy • Formulation of Lipsticks, Creams, and Lotions • GPAT 2021

A. 4.7 B. 8.7 C. 13.2 D. 14.3

3196. Match List I with List II for emulsifiers: A. Triethanolamine oleate, B. N‑ethyl N‑ethy morpholinium ethosulfate, C. Polyoxyethylene sorbitan monooleate, D : Gelatin; and List II: I. Surface-active agent (non-ionic), II. Hydrophilic colloid, III. Surface-active agent (anionic), IV. w/o Emulsifier (HLB=4.3).

Physical Pharmacy • Formulation of Lipsticks, Creams, and Lotions • GPAT 2021

A. (A)-(II); (B)-(IV); (C)-(V); (D)-(III) B. (A)-(III); (B)-(V); (C)-(I); (D)-(II) C. (A)-(V); (B)-(IV); (C)-(II); (D)-(III) D. (A)-(IV); (B)-(III); (C)-(V); (D)-(I)

3197. When an aqueous sodium chloride solution has the same colligative properties as another solution, the value obtained is known as

Physical Pharmacy • Isotonic solutions • GPAT 2021

A. Normality B. Isotonicity value C. Molarity D. Molality

3198. Select the correct rate equation for a second-order bimolecular reaction.

Physical Pharmacy • Kinetics & Drug Stability • GPAT 2021

A. Equation A B. Equation B C. Equation C D. Equation D

3199. Rancidity in fixed oils is indicated by?

Physical Pharmacy • Kinetics & Drug Stability • GPAT 2021

A. Higher iodine value B. Higher acid value C. Higher peroxide value D. More unsaponifiables

3200. For the measurement of particle size of powders, the distance measured between two tangents on opposite sides of the particle parallel to a fixed direction is called

Physical Pharmacy • Micromeritics • GPAT 2021

A. Feret diameter B. Martin diameter C. Projected area diameter D. Edmundson diameter

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Physical and Inorganic Chemistry PYQs – Set 160

Physical and Inorganic Chemistry PYQs – Set 160

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Physical and Inorganic Chemistry PYQs – Set 160

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