Chemical Engineering Mcqs

The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for ______________ at room temperature ?

(A) Air
(B) Water
(C) Mercury
(D) Alcohol

Submitted By :Ali Uppal

Which of the following is resistant to the action of both heat & chemicals ?

(A) Borosilicate glass
(B) Silica glass
(C) Soda lime glass
(D) None of these

Submitted By :Ali Uppal

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution ?

(A) A1 is more alkaline than solution A2
(B) A1 is highly acidic
(C) A2 is very slightly acidic
(D) Both

Submitted By :Ali Uppal

________________ is the hardest material out of the following ?

(A) Boron carbide
(B) Tungsten carbide
(C) Hardened steel
(D) Silicon carbide

Submitted By :Ali Uppal

_______________ is the most important element, which controls the physical properties of steel ?

(A) Manganese
(B) Silicon
(C) Carbon
(D) Vanadium

Submitted By :Ali Uppal

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the _______________ allowance ?

(A) Casting
(B) Pattern
(C) Draft
(D) Distortion

Submitted By :Ali Uppal

A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is ________________ W/m2 °C ?

(A) 50
(B) 100
(C) 150
(D) 200

Submitted By :Ali Uppal

In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be________________?

(A) Higher, as it gives higher wavelength
(B) Lower, as it gives higher wavelength
(C) Higher, as it gives shorter wavelength
(D) Lower, as it gives shorter wavelength

Submitted By :Ali Uppal

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?

(A) 2
(B) 8
(C) 10
(D) 40

Submitted By :Ali Uppal

The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?

(A) 273.15
(B) 225.65
(C) 100.03
(D) 373.15

Submitted By :Ali Uppal

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