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.Management Sciences
Category: Stoichiometry
1 gm mole of methane (CH4) contains_________________?
A. 6.02 × 1023 atoms of hydrogen
B. 4 gm atoms of hydrogen
C. 3.01 × 1023 molecules of methane
D. 3 gms of carbon
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the______________________?
A. Same elevation in boiling point
B. Different elevation in boiling point
C. Elevation in boiling point in the ratio of their molecular weights
D. None of these
The increase in the temperature of the aqueous solution will result in decrease of its________________?
A. Weight % of the solute
B. Mole fraction of the solute
C. Molarity
D. Molality
The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________________?
A. 3.01 × 1022
B. 6.02 × 1023
C. 9.03 × 1024
D. 1.20 × 1024
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?
A. Independent of temperature
B. Increases with rise in pressure
C. Increased with decrease in pressure
D. Unchanged with pressure changes
Which of the following ratios defines the recycle ratio in a chemical process ?
A. Gross feed stream/recycle feed stream
B. Recycle stream/fresh feed stream
C. Recycle stream/gross feed stream
D. None of these
Pick out the wrong statement?
A. Insulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks
B. Graphite refractories are also called plumbago refractories
C. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
D. Calcined magnesite is also called dead burnt magnesite
Volume occupied by one gm mole of a gas at S.T.P. is ____________________?
A. 22.4 litres
B. 22400 litres
C. 22.4 c.c
D. 359 litres
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