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.Management Sciences
Category: Chemistry Basic Concept
Paramagnetic behaviour of substance is measured by a balance called___________________?
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A. Analytical balance
B. Guoys balance
C. Electrical balance
D. Single beam balance
Empirical formula of chloroform is____________________?
A. CH2 C12
B. CH3C1
C. CC14
D. CHCL3
(more…)
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
The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?
A. alkaline aquenous iodine
B. aqueous bromine
C. Fehling solution
D. aqueous NaOH
Which of the following solids show anisotropy___________________?
A. Plastic
B. Glass
C. Rubber
D. None of the above
The hardest of the following solids is__________________?
A. sodium
B. diamond
C. graphite
D. magnesium
Isotopes of the same elements has__________________?
A. different number of protons
B. same number of neutrons
C. different number of neutrons
D. same mass number (nucleon number)
The number of isotopes of elements with even mass number and even atomic number are ________________?
A. 280
B. 300
C. 154
D. 54
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