Chemical Engineering Mcqs

If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity_________________?

• (A)  Is trebled
• (B)  Remains unchanged
• (C)  Decreases by a factor of 3
• (D)  Decreases by a factor of 1/3

Answer

Submitted By :Ali Uppal

Pressure required to increase the density of water by about 1% is ____________________ atmosphere?

• (A)  10
• (B)  50
• (C)  200
• (D)  1000

Answer

Submitted By :Ali Uppal

The starting of a car takes time in winter, because the__________________?

• (A)  Octane number of fuel is decreased
• (B)  Fuel supply for ignition is not sufficient
• (C)  Vaporisation of the fuel is decreased
• (D)  Pour point of fuel decreases

Answer

Submitted By :Ali Uppal

Reduction in the grain size reduces the _________________ of the material?

• (A)  Fatigue resistance
• (B)  Tensile strength
• (C)  Creep resistance
• (D)  All A,

Answer

Submitted By :Ali Uppal

Lead is poured into the joints between two ___________________ pipes?

• (A)  Cast iron
• (B)  Steel
• (C)  Concrete
• (D)  Plastic

Answer

Submitted By :Ali Uppal

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be_______________?

• (A)  Parabolic
• (B)  Hyperbolic
• (C)  Straight line
• (D)  None of these

Answer

Submitted By :Ali Uppal

Out of the following, the ________________ pipe has the least corrosion resistance?

• (A)  Mild steel
• (B)  Copper
• (C)  Cast iron
• (D)  Wrought iron

Answer

Submitted By :Ali Uppal

An alloy of Fe – 0.4 % C is__________________?

• (A)  Cast iron
• (B)  Hypo-eutectoid steel
• (C)  Hyper-eutectoid steel
• (D)  Eutectoid steel

Answer

Submitted By :Ali Uppal

Thermit welding uses the following energy source ?

• (A)  Electrical energy
• (B)  Chemical energy
• (C)  Energy of high velocity electrons
• (D)  Heat generated by friction

Answer

Submitted By :Ali Uppal

Resistance of an electrical conductor is proportional to its (where, l = length and A = crosssectional area of the conductor)________________?

• (A)  A
• (B)  l
• (C)  A2
• (D)  Both

Answer

Submitted By :Ali Uppal