When 6d orbital is complete the entering electron goes into_________________?
When 6d orbital is complete the entering electron goes into_________________?
A. 7f
B. 7s
C. 7p
D. 7d
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The volume occupied by 1.4g CO at S.T.P is___________________?
The volume occupied by 1.4g CO at S.T.P is___________________?A. 22.4 dm3
B. 2.24 dm3
C. 1.12 cm3
D. 1.12 dm3Air is a/an _________?
Air is a/an _________?A. Compound
B. Element
C. Electrolyte
D. MixtureIn chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
Air is an example of gas solution as it is an homogeneous mixture of several gases.Calcarious material includes_________________?
Calcarious material includes_________________?A. lime stone
B. marble
C. chalk
D. all of the aboveCombustion analysis is performed to determine__________________?
Combustion analysis is performed to determine__________________?A. Empirical formula
B. Molecular mass
C. Molecular formula
D. Formula massMany properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?
Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?A. The nature of its oxides
B. The charge on its ions
C. The formula of its oxide
D. Its number of isotopesWhen phenol is heated with concentrated nitric acid the product is________________?
When phenol is heated with concentrated nitric acid the product is________________?A. Picric acid
B. o-nitrophenol
C. 1 3 5 -trinitro benzene
D. p-nitrophenol