Materials and Construction

A. Aqua regia
B. Ferrous sulphate
C. Hydrochloric acid (10%)
D. None of these

A. Chlorinet – 2 alloy
B. Monel
C. Inconel
D. Babbitt metal

A. 0.1 to 0.35
B. 0.35 to 0.5
C. 0.8 to 1.4
D. 1 to 1. 5

A. Normalising
B. Tempering
C. Annealing
D. None of these

A. Plastics
B. Fibres
C. Elastomers
D. Both rubber & elastomers

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

A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Is tempered at 850°C

A. Wood
B. Concrete
C. Copper bearing steel
D. Porcelain

A. Aluminium
B. Iron
C. Lead
D. Nickel

A. Is the hardest metal in common use
B. Is the lightest metal in common use
C. Cannot be scratched by finger nails
D. Cannot be work hardened