Chemical Engineering Mcqs

Air-petrol ratio in an automotive petrol engine is around ________________?

• (A)  14 : 1
• (B)  22 : 1
• (C)  25 : 1
• (D)  4 : 1

Answer

Submitted By :Ali Uppal

____________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength ?

• (A)  Lancing
• (B)  Shot peening
• (C)  Slugging
• (D)  Spinning

Answer

Submitted By :Ali Uppal

Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2) ?

• (A)  High speed steel
• (B)  Stainless steel
• (C)  Tungsten carbide
• (D)  Superalloys

Answer

Submitted By :Ali Uppal

Pick out the wrong conversion of absolute & kinematic viscosities ?

• (A)  1 stoke = 1 cm2/sec
• (B)  1 N.sec/m2 = 10 paise
• (C)  1 stoke = 1 m2/sec
• (D)  1 m2/sec = 104 stokes

Answer

Submitted By :Ali Uppal

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material?

• (A)  Elastic
• (B)  Ultimate
• (C)  Yielding
• (D)  Breaking

Answer

Submitted By :Ali Uppal

An approximately _____________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ?

• (A)  Adiabatic
• (B)  Isothermal
• (C)  Isentropic
• (D)  Isochoric

Answer

Submitted By :Ali Uppal

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

• (A)  Small punches, broaches reamers and springs
• (B)  Cutlery, screws, rivets and files
• (C)  Mandrels, twist drills, small lathe tools and razors
• (D)  Forgings like can shaft, structural steel plate, threading dies and drawing dies

Answer

Submitted By :Ali Uppal

Nickel is a _________________ material?

• (A)  Ferromagnetic
• (B)  Semi-conductor
• (C)  Paramagnetic
• (D)  Ferroelectric

Answer

Submitted By :Ali Uppal

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?

• (A)  Resilience
• (B)  Toughness
• (C)  Ductility
• (D)  Impact strength

Answer

Submitted By :Ali Uppal

Function of fusible plug in a boiler is to ______________________?

• (A)  Drain out water and sludge from the boiler during repair
• (B)  Put off fire in the furnace when water level in the boiler falls to unsafe limit
• (C)  Guard the boiler in case of abnormal rise in steam pressure
• (D)  All A,

Answer

Submitted By :Ali Uppal