Category: Materials and Construction

A. Acetic acid
B. Benzoic & boric acids
C. Phosphoric acid (95%) & sulphuric acid (95%)
D. Hydrochloric acid (concentrated)

A. Suppresses the decomposition of Fe3C
B. Increases the formation of graphite
C. Increases the contraction of the metal
D. Reduces its fluidity

A. Pig iron
B. Wrought iron
C. High carbon steel
D. None of these

A. Ammonia
B. Acetic acid
C. Phenol
D. Formaldehyde

A. 0.5
B. 2
C. 40
D. 75

A. Carburising
B. Nitriding
C. Cyaniding
D. Annealing

A. Glass
B. Mica
C. Brass
D. Cast iron

A. Very high cost
B. Rather low tensile strength
C. Very low strength to weight ratio
D. Scarce availability

A. Duriron
B. Nickel
C. Aluminium
D. Karbate

A. Spheroidising
B. Tempering
C. Normalising
D. Annealing