Reactivity due to pi-electrons is present in_________________?

Related Mcqs:

1. A substance which increases the reactivity of enzyme is called_________________?

   A. Promoters
   B. Inhibitors
   C. Stimulators
   D. Non-activators

2. Which alkyl halide has the highest reactivity for a particular alkyl group ?

   A. R-F
   B. R-C
   C. R-Br
   D. R-I

3. Crystallites are present in_________________?

   A. crystalline solids
   B. amorphous solids
   C. liquid crystals
   D. all of the above

4. In unsaturated hydrocarbons electrons favour___________________?

   A. less reactivity
   B. addition reactions
   C. substitution reactions
   D. none

5. Which specie has unpaired electrons in antibonding molecular orbitals_______________?

   A. O2+2
   B. N2-2
   C. B2
   D. O2-2

6. Space around nucleus where finding probability of electrons is maximum is called ____________________?

   A. Orbital
   B. Orbit is elliptical
   C. subshell
   D. Electron cloud

7. When electrons collide with heavy metals than ___________ are produced?

   A. Beta-rays
   B. Alpha-rays
   C. X-rays
   D. Gamma-rays

8. Which one has maximum number of unpaired electrons ?

   A. 6X
   B. 7Y
   C. 9Z
   D. 13W

9. In Galvanic cell electrons flow from anode to cathode through__________________?

   A. external electric circuit
   B. salt bridge
   C. movement of ions
   D. all of the above

10. When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?

    A. orbitals of f-subshell
    B. orbitals of d-subshell
    C. orbitals of p-subshell
    D. both A & B