The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________?
(A) Is always less than 1
(B) Is always greater than 1
(C) Can be 5
(D) Depends on the choice of the standard state
Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
(A) °C
(B) °F
(C) °K
(D) °R
____________________ metal is used as a bearing liner material?
(A) Pewter
(B) White
(C) Babbitt
(D) Gun
Regeneration of molecular sieve requires it to be heated to a temperature of about __________________ °C?
(A) 80-120
(B) 200-300
(C) 600-800
(D) 1000-1100
The ‘laughing gas’ is__________________?
(A) Nitrous oxide
(B) Nitric oxide
(C) Nitrogen trioxide
(D) Nitrogen pentoxide
Heat transfer by ______________ is almost absent in case of fluidised bed drying operation?
(A) Radiation
(B) Conduction
(C) Convection
(D) Both
What is the range of tempering temperature (°C) for most of the materials ?
(A) 75-100
(B) 200-300
(C) 350-450
(D) 500-600
Boiler draught of 10 mm water column is equivalent to_____________________?
(A) 1 kgf/m2
(B) 10 kgf/m2
(C) 10 kgf/mm2
(D) 1 kgf/mm2
Which of the following is not a current asset of a chemical company ?
(A) Inventories
(B) Marketable securities
(C) Chemical equipments
(D) None of these
Steel produced from phosphatic iron is _______________ in nature?
(A) Malleable
(B) Ductile
(C) Brittle
(D) Tough