മടം
‏6ت‎
‎0:40%
‎Correct Answer:- Option ®
Question23:-A solution of NaOH is prepared by dissolving 40 g NaOH in 90 g water. The composition of NaOH in the solution as mole fraction and mass fraction are approximately
0.2 and 0.44
B:-0.2 and 0.69
C-0.167 and 0.44
0.167 and 0.31
Correct Answer:- Option-D
Question24:-Pure carbon is completely burt in oxygen. The flue gas analysis shows 70% CO, , 20% CO and 10%0, . The percent excess oxygen used is
‏مم‎
‎8:20.
‏كد‎
‏میم‎
‎09۲۷۶١۲ ۸۳۰۸۷9۴۰ ‏۸۸ا05‎
‎Question25:-A sample of gas at 27°C and 1 atm occupies a volume of SL. The volume occupied by the same gas sample at 47°C is
102 ட
8:29
53೬
0-87೬
Correct Answer:- Option-C
Question26:-Choose the incorrect statement.
‘AcThe partial pressure of a gas in a mixture of gases is the product of total pressure and its mole fraction.
B:-According to Dalton’s law, the total pressure exerted by a gas mixture is the sum of partial pressures of individual components of the gas mixture,
C=Dalton’s law of partial pressures assumes that the individual component gases obey ideal gas law.
D:-Dalton’s law of partial pressures is applicable to a gas mixture whose individual components obey van der Waals equation.
Correct Answer:- Option-D
Question27:-A sample of gas mixture has 20% 0, and 80% N, on volume basis. The weight percentage 0, of in the gas mixture is
കാ
മമമ
೧-248
5:284
Correct Answer:- Option ®
Question28:-Which of the following is a byproduct of petroleum refining 7
‘Ac Fuel oil
B:-Lubricating oil
ceSulfur
D=Copper
Correct Answer:- Option-C
Question29::Which of the following has maximum hydrogen to carbon ratio (by weight) ?
‘AGasoline
Bs-Naphtha
C-Diesel oil
D-Fuel oil
Correct Answer:- Option-é
Question30::Which of the following has higher heat of combustion 7
AcAromatics

B-Olefins