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.Management Sciences
Category: Chemistry Basic Concept
Mass spectrometer is used to determine Mass number of isotopes and___________________?
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A. Atomic number
B. Relative abundance
C. Electronic configuration
D. All of the above
Metallic crystals are soluble in________________?
A. Polar solvent
B. Non polar solvent
C. Fused metal
D. None
All the transition elements show_________________?
A. Similar physical properties
B. Similar chemical properties
C. Both A and b
D. None
Combustion analysis is performed to determine__________________?
A. Empirical formula
B. Molecular mass
C. Molecular formula
D. Formula mass
Which of following metals can be displaced by all other metals from its solution ?
A. Ag
B. A
C. Au
D. Cu
Paramagnetic behaviour of substance is measured by a balance called___________________?
A. Analytical balance
B. Guoys balance
C. Electrical balance
D. Single beam balance
All the following variables are used to describle gases except__________________?
A. pressure
B. volume
C. moles
D. density
Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
A. 20cm3/min
B. 40cm3/min
C. 160cm3/min
D. 2.5cm3/min
Atomic number of Mn is 25 what is the electronic configuration in the ground state________________?
A. 1s2 2s2 2p6 3s2 3p6 3d7
B. 1s2 2s2 2p6 3s2 3p6 4s2 4p5
C. 1s2 2s2 2p6 3s2 3p5 3d10
D. 1s2 2s2 2p6 3s2 3p6 4s23d5
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