Chemical Engineering Mcqs

Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its________________?

• (A)  Lower cost
• (B)  Abundant availability
• (C)  Resistance to vegetable acids as the tin plate are commercially used in ‘canning’ industry
• (D)  None of these

Answer

Submitted By :Ali Uppal

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type________________?

• (A)  Parallel flow with equal heat capacities
• (B)  Counter flow with equal heat capacities
• (C)  Counter flow with unequal heat capacities
• (D)  Parallel flow with unequal heat capacities

Answer

Submitted By :Ali Uppal

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?

• (A)  15
• (B)  25
• (C)  10
• (D)  30

Answer

Submitted By :Ali Uppal

Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?

• (A)  Steel
• (B)  Lignite
• (C)  Water
• (D)  Lime stone

Answer

Submitted By :Ali Uppal

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is__________________?

• (A)  Creep
• (B)  Toughness
• (C)  Tensile strength
• (D)  Fatigue

Answer

Submitted By :Ali Uppal

‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?

• (A)  V
• (B)  V/2
• (C)  2V
• (D)  3V

Answer

Submitted By :Ali Uppal

Ammonia gas can be dried by___________________?

• (A)  PCl5
• (B)  Quick lime
• (C)  CaCl2
• (D)  Concentrated H2SO4

Answer

Submitted By :Ali Uppal

The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?

• (A)  Ambient
• (B)  Dry bulb
• (C)  Dew point
• (D)  Wet bulb

Answer

Submitted By :Ali Uppal

An investment of Rs. 100 lakhs is to be made for construction of a plant, which will take two years to start production. The annual profit from the operation of the plant is Rs. 20 lakhs. What will be the payback time ?

• (A)  5 years
• (B)  7 years
• (C)  12 years
• (D)  10 years

Answer

Submitted By :Ali Uppal

Which of the following is not a mathematical method for evaluation of profitability of a chemical process plant ?

• (A)  Cash reserve
• (B)  Rate of return on investment
• (C)  Payout period
• (D)  Discounted cash flow based on full life performance

Answer

Submitted By :Ali Uppal