chemical engineering stoichiometry MCQs – Page 12

Practise multiple-choice questions from chemical engineering stoichiometry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering stoichiometry Mcqs

221. The vapor pressure of water at 100C is__________________?
0

A. 76 cms of Hg

B. 100 N/m2

C. 760 mm wc

D. 13.6 cms of Hg

222. Internal energy is independent of the ____________ for an ideal gas?
0

A. Pressure

B. Volume

C. Both A. & B.

D. Neither A. nor B.

223. According to the kinetic theory, the thermal conductivity of a monatomic gas is proportional to___________________?
0

A. T1.5

B. T0.5

C. T

D. T2

224. Clausius Clapeyron equation applies to the _____________ process?
0

A. All A., B. & C.

B. Vaporisation

C. Sublimation

D. Melting

225. Assuming that CO2 obeys perfect gas law, calculate the density of CO2 (in kg/m3) at 263C and 2 atm ?
0

A. 3

B. 2

C. 1

D. 4

226. N.T.P. corresponds to__________________?
0

A. 1 atm absolute pressure & 0C

B. 101.325 KPa gauge pressure & 0C

C. 760 torr & 15C

D. 760 mm Hg gauge pressure & 0C

227. The vapor pressure of liquids of similar chemical nature at any particular temperature _______________ with increase in the molecular weight?
0

A. Decreases

B. Remains unchanged

C. Increases

D. Either A. or B.; depends on the liquid

228. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules ____________________?
0

A. Do work equal to loss in kinetic energy

B. Do not lose energy on collision

C. Are above the inversion temperature

D. Do not exert attractive force on each other

229. ______________ equation gives the effect of temperature on heat of reaction ?
0

A. Maxwells

B. Kistyakowsky

C. Kirchoffs

D. Antoine

230. Air at a temperature of 20C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20C is 17.5 mm Hg?
0

A. 78.51

B. 80

C. 80.38

D. 79.62

231. Number of gm moles of solute dissolved in 1 kg of solvent is called its___________________?
0

A. Molarity

B. Normality

C. Molality

D. Formality

232. In osmosis through a semi-permeable membrane, diffusion of the___________________?
0

A. None of these

B. Solute takes place

C. Solvent is from low concentration to high concentration region

D. Solvent is from high concentration to low concentration region

233. No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules____________________?
0

A. Do work equal to loss in kinetic energy

B. Are above the inversion temperature

C. Exert no attractive force on each other

D. Collide without loss of energy

234. The OH- concentration in a solution having pH value 3 is____________________?
0

A. 3-Oct

B. 10-11

C. 10-Oct

D. 13-Oct

235. 1 torr is equal to ______________ mm Hg column?
0

A. 10

B. 0.1

C. 1000

D. 1

236. 1m3 is approximately equal to_________________?
0

A. 28 litres

B. 4.5 litres

C. 35 ft3

D. 4.5 ft3

237. At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?
0

A. Increased collision rate among molecules

B. Decrease in mean free path

C. Increase in molecular attraction

D. Increase in average molecular speed

238. One Therm is equivalent to___________________?
0

A. 105 BTU

B. 109 BTU

C. 109 kcal

D. 105 kcal

239. Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?
0

A. 0.58

B. 0.2

C. 1.72

D. 0.5

240. The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements. This is the statement of___________________?
0

A. Law of Petit and Dulong

B. Kopps rule

C. Nernst heat theorem

D. Troutons rule

Previous Next

Showing 221 to 240 of 398 mcqs