February 2019

A. Carbon and other alloying elements get oxidised from the weld pool
B. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of
the weld

A. Nitrate
B. Sulphate
C. Carbonate
D. Chloride

A. Pressure change to temperature change occuring during adiabatic compression of a gas
B. Pressure change to temperature change occuring during adiabatic throttling of a gas
C. Temperature change to pressure change occuring during adiabatic compression of a gas
D. Temperature change to pressure change occuring during adiabatic throttling of a gas

A. Hand trolley
B. Belt conveyor
C. Crane
D. Truck

A. Hardness
B. Tensile
C. Toughness
D. Compressive

A. Decreases with the increase of concentration of the solute
B. Increases with the increase of concentration of the solute
C. Remains constant
D. Is unity at infinite dilution

A. Floating hollow polypropylene spheres
B. Spraying alumina powder
C. Putting cement
D. None of these

A. Δ G° = 0 , Δ H° = 0
B. Δ H° = 0 , Δ S° = 0
C. Δ S° = 0 , Δ E° = 0
D. Δ S° = 0 , Δ Cp° = 0

A. Internal energy
B. Enthalpy
C. Entropy
D. Temperature

A. 0.015
B. 0.71
C. 1.2
D. 3.5