°API gravity of water at N.T.P. is about__________________?
°API gravity of water at N.T.P. is about__________________?
A. 0
B. 1
C. 10
D. 100
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The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?
The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?A. 1
B. 2
C. 3
D. 4Validity of the relationship, inputs = outputs, holds good for the system at steady state________________?
Validity of the relationship, inputs = outputs, holds good for the system at steady state________________?A. With chemical reaction
B. Without chemical reaction
C. Without chemical reaction & losses
D. None of theseFor an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?
For an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?A. Inversely
B. Exponentially
C. Linearly
D. NegligiblyThe heat capacity of most substances is greater for the _______________ state?
The heat capacity of most substances is greater for the _______________ state?A. Solid
B. Liquid
C. Gaseous
D. None of theseEqual masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?
Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?A. 1/9
B. 8/9
C. 1/2
D. 5/9Magnesite refractories are generally not used in the__________________?
Magnesite refractories are generally not used in the__________________?A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns