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.Management Sciences
Category: Diagnostic Test
The number of atoms in a molecule determines________________?
A. macromolecule
B. macromolecule
C. molecularity
D. atomicity
A safe and more reliable method for drying the crystal is__________________?
A. Hot air currents
B. folds of filter paper
C. oven
D. Vacuum desiccator
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
A. 8
B. 5.1
C. 6
D. one/fifty one
Which of the following set has all species isoelectronic__________________?
A. F – Cl – Br
B. Li+1 – Na+1 – K+1
C. F – Ne – Na+
D. H+ – H- – H
Water absorber used in combustion analysis is___________________?
A. 50% KOH
B. Lime water
C. CaCl2
D. Mg (CIO4)2
Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?
A. one / seventeen
B. sixteen / seventeen
C. one / three
D. two / three
Only London dispersion forces are present among the_________________?
A. Molecules of water in liquid state
B. Atoms of helium in gaseous state at high temperature
C. Molecules of hydrogen chloride gas
D. Molecules of solid iodine
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