Chemical Engineering Mcqs

Heat of reaction is not influenced by__________________?

(A) The route/method through which final products are obtained
(B) The physical state (e.g., solid, liquid or gaseous) of reactants and products
(C) Whether the reaction is carried out at constant temperature or constant pressure
(D) None of these

Submitted By :Ali Uppal

A ‘limiting reactant’ is the one, which decides the ____________ in the chemical reaction?

(A) Equilibrium constant
(B) Conversion
(C) Rate constant
(D) None of these

Submitted By :Ali Uppal

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___________________?

(A) Decrease in mean free path
(B) Increased collision rate among molecules
(C) Increase in molecular attraction
(D) Increase in average molecular speed

Submitted By :Ali Uppal

1 torr is equivalent to_________________?

(A) 1 mm Hg
(B) 1 Pascal
(C) 1 atm
(D) 1 mm wc

Submitted By :Ali Uppal

An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?

(A) 0.2500
(B) 0.2528
(C) 0.5000
(D) 0.5055

Submitted By :Ali Uppal

The density of a gas at N.T.P.is ‘ρ’. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become ¾ 0.75 ρ at a temperature of ____________ °K?

(A) 273°
(B) 300°
(C) 400°
(D) 373°

Submitted By :Ali Uppal

A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?

(A) Xc > Xs
(B) Xc = Xs
(C) Xc < Xs
(D) Xc greater/less than Xs depending on the length of the cylinder

Submitted By :Ali Uppal

The temperature at which a real gas obeys Boyle’s law is termed as the__________________?

(A) Triple point
(B) Boyle’s temperature
(C) Eutectic point
(D) Inversion temperature

Submitted By :Ali Uppal

1 gm mole of methane (CH4) contains_________________?

(A) 6.02 × 1023 atoms of hydrogen
(B) 4 gm atoms of hydrogen
(C) 3.01 × 1023 molecules of methane
(D) 3 gms of carbon

Submitted By :Ali Uppal

If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is _____________ times?

(A) 10
(B) 100
(C) 1000
(D) 10000

Submitted By :Ali Uppal

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