A. small size
B. high charge density
C. less electropositivity
D. all of the above
Related Mcqs:
- The irritation caused by red ants bite is due to____________________?
A. Lactic acid
B. Formic acid
C. Uric acid
D. Acetic acid - The molal boiling point constant is the ration of the elevation of boiling point to____________________?
A. Molarity
B. Molality
C. More fraction of solvent
D. Mole fraction of solute - When water freezes at 0°C its density decreases due to_______________?
A. Change of bond angles
B. Cubic structure of ice
C. Empty space present in the structure of ice
D. Change of bond length - An enzyme has its specificity due to________________?
A. Substrate
B. Structure
C. Temperature
D. Pressure - The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
A. vaporization
B. evaporation
C. crystallization
D. sublimation - When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?
A. 0.115
B. 0.900
C. 0.015
D. 0.215Submitted by: Muhammad Ali Kunbhar
- Carbonates of lithium are not stable like that of sodium due to________________?
A. Low electronegativity
B. Low electropositivity
C. Low charge density
D. Not known yet - Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?
A. Smaller electronegativity of alkali metals
B. Smaller ionic radius of these metals
C. De-excitation of electrons from higher energy levels to low energy level
D. Excitation of electrons from low energy levels to higher energy levels - Second ionization potential of alkali metals are very high due to_______________?
A. being s-block elements
B. inert gas configurations
C. ns1 electronic configuration
D. being metals - Any process of chemical decay of metals due to the action of surrounding medium is called__________________?
A. activation
B. enameling
C. corrosion
D. coating
