Most suitable material for high pressure vessel operating at 500 atm. and 500° C is High silicon iron (14% Si) 18/8 stainless steel Molybdenum stainless steel Mild steel TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not shipped in mild steel containers? Acetone Ammonia Formic acid Ethyl alcohol TRUE ANSWER : ? YOUR ANSWER : ?
Reduction in the grain size reduces the __________ of the material. Fatigue resistance All of these Tensile strength Creep resistance TRUE ANSWER : ? YOUR ANSWER : ?
Silicone rubber is not resistant to the corrosive action of Sulphuric acid (10%) Sulphuric acid (95%) Ether Both B and C TRUE ANSWER : ? YOUR ANSWER : ?
The presence of impurities in iron Does not affect its melting point Makes it malleable Increases its melting point Decreases its melting point TRUE ANSWER : ? YOUR ANSWER : ?
Ammonium chloride solution is stored/ treated in __________ vessels/pipes. Plain carbon steel Lead Rubber or durmet-20 lined Stainless steel TRUE ANSWER : ? YOUR ANSWER : ?
How many atoms are there per unit cell in a body centred cubic lattice system? 6 3 4 2 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following pairs of elements may form an alloy? Iron & carbon Iron & mercury Platinum & mercury None of these TRUE ANSWER : ? YOUR ANSWER : ?
The specific gravity of coal depends mainly on its __________ content. Volatile matter Carbon Moisture Ash TRUE ANSWER : ? YOUR ANSWER : ?
Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of High carbon steel Brass Aluminium Copper TRUE ANSWER : ? YOUR ANSWER : ?