Containers made of high silicon cast iron (14% Si) are not suitable for the storage of Hydrochloric acid (concentrated) Phosphoric acid (95%) & sulphuric acid (95%) Acetic acid Benzoic & boric acids TRUE ANSWER : ? YOUR ANSWER : ?
In the kraft (sulphate) process for the paper manufacture, the digestor is made of Karbate carbon Cast iron Stainless steel Wrought iron TRUE ANSWER : ? YOUR ANSWER : ?
DDT is shipped in Stainless steel containers Paper bags Fibre drums Either B or C TRUE ANSWER : ? YOUR ANSWER : ?
Interchain forces are the weakest in case of Plastics Elastomers Fibres Both rubber & elastomers TRUE ANSWER : ? YOUR ANSWER : ?
Metal at the top of the electromotive series is Most active Most noble Least active Most stable TRUE ANSWER : ? YOUR ANSWER : ?
Cast iron compared to steel is better in Malleability Ductility Strength Fluidity & castability TRUE ANSWER : ? YOUR ANSWER : ?
Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by Acetic acid None of these Dilute HC₁ v TRUE ANSWER : ? YOUR ANSWER : ?
Pure nickel is Having h.c.p. crystal lattice Ferromagnetic above its curie point (i.e., 415°C) Ferromagnetic at room temperature Not resistant to oxidation at high temperature TRUE ANSWER : ? YOUR ANSWER : ?
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of Graphite Concrete Steel Zircalloy TRUE ANSWER : ? YOUR ANSWER : ?
Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent. 0.35 0.5 0.02 0.2 TRUE ANSWER : ? YOUR ANSWER : ?