The word Alkali means__________________?

Related Mcqs:

1. Molecular mass of water (18g) means__________________?

   A. 1-mole molecules of water
   B. 1-gram molecule of water
   C. 3-gram atoms
   D. all

2. Higher value of electron affinity means__________________?

   A. Atom will lose electron easily
   B. Atom will gain electron easily
   C. Atom may form di-positive ion
   D. The reason is unknown

3. A elements are named as alkali metals because_______________?

   A. Their oxides are basic
   B. Their oxide and hydroxides are water soluble
   C. Both A & B
   D. They are found in earth

4. Which one of the following is not an alkali metal ?

   A. Francium
   B. Caesium
   C. Rubidium
   D. Radium

5. 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

6. First ionization potential of alkaline earth metal is greater than alkali metals because___________________?

   A. They are more reactive
   B. They have greater atomic radii
   C. They have smaller atomic sizes
   D. All

7. Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?

   A. Lithium
   B. Sodium
   C. Potassium
   D. Rubidium

8. 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

9. Metallic characters of alkali metals_____________________?

   A. Increase down the group
   B. Decrease down the group
   C. No regular trend
   D. Remain same

10. The Latin word formica means ant. The name formic acid is derived from this Latin word because__________?

    A. this acid, in ancient times, was used to eliminate ant-hills
    B. this corrosive acid is secreted by ants to drive away their enemies
    C. this acid was first obtained by the distillation of ants
    D. ants are attracted by the odour of this acid

    Submitted by: Muhammad Ali Kunbhar