Chemistry MCQS

311. Chloro group is Ortho and para but __ withdrawing.
(A) Proton
(B) Neutron
C. Electron
(D) None of the above

312. Methyl group is Ortho and P-directing because?
(A) E donating effect of methyl group resonatingly.
(B) E donating effect of methyl group inductively.
(C) E donating effect of methyl group hyperconjugation.
D. All of the above

313. Which among the following shows Brownian movement?
(A) Metal
B. Colloids
(C) Metalloid
(D) None of the above

314. Which is used in the hydrogenation of vegetable ghee?
(A) Copper
(B) Silver
C. Nickel
(D) Steel

315. Which liquid has the highest Vapor pressure:
A. HF
B. H2O
C. Acetic acid
D. Glycerin

316. Vapor pressure of a liquid does not depend on:
A. Nature of liquid
B. IMF
C. Temperature
D. Surface area

317. Vapor pressure of water at 25 degrees Celsius is:
A. 76 Torr
B. 24 Torr
C. 50 Torr
D. 80 Torr

318. Which of the following has the highest boiling point?
A. Dimethyl ether
B. Acetic acid
C. Water
D. Ethyl alcohol

319. Freezing of water is:
A. Endothermic process
B. Exothermic process
C. Spontaneous process
D. Both B and C

320. Unit of surface tension is:
A. J.M -1
B. N.M -1
C. ERG.CM -1
D. All