Search
.Management Sciences
Category: Materials and Construction
The metals occuring at the lower most position in the electromotive series____________________?
0
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of________________?
A. Aluminium
B. Stainless steel
C. High silicon (14%) iron
D. Copper
Silicone rubber is not resistant to the corrosive action of____________________?
A. Sulphuric acid (10%)
B. Sulphuric acid (95%)
C. Ether
D. Both B. and C.
Phenol is not shipped in________________?
A. Nickel lined steel tank cars
B. Galvanised or tin lined drums
C. Boxed glass carboys
D. Cast iron containers
Polythene (low or high density) containers are not corroded by___________________?
A. Sulphuric acid (10%) at room temperature
B. Nitric acid (95%) at room temperature
C. Sulphur trioxide at 60°C
D. Any of these
Wood metal is not used for making___________________?
A. Soft solder
B. Casting for dental work
C. Storage tank for storing brine and caustic soda
D. Fusible safety plug for pressure cooker
The phenomenon in which slow extension of material takes place with the time at constant load is called________________?
A. Plasticity
B. Creep
C. Elasticity
D. Ductility
Recent Comments