The most reactive allotropic form of phosphorus is________________?

Related Mcqs:

1. Allotropic form of phosphorus that is poisonous is___________________?

   A. White
   B. Red
   C. Black
   D. Violet

2. Which allotropic form of phosphorous is the most stable ?

   A. White
   B. black
   C. red
   D. Violet

3. Bucky balls is an allotropic from of__________________?

   A. Sulphur
   B. Carbon
   C. Silica
   D. Tin

4. __________ is one of the allotropic modifications of carbon.

   A. Silicon
   B. Diamond
   C. Iodine
   D. Graphite

   Submitted by: Shumail Farhan

5. Ketones are comparatively less reactive than aldehdye. It is due to_______________?

   A. alkyl groups are electron donating
   B. steric hindrance
   C. Both A and B
   D. none

6. Grignard reagent is reactive due to___________________?

   A. the presence of halogen atom
   B. the presence of magnesium atom
   C. the polarity of C-Mg bond
   D. all

7. Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?

   A. they have an electrophilic carbon
   B. they have an electrophilic carbon & a good leaving group
   C. they have an electrophilic carbon & a bad leaving group
   D. they have a nucleophilic carbon & a good leaving group

8. Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?

   A. Urea
   B. Calcium superphosphate
   C. Diammonium phosphate
   D. Potassium nitrate

9. Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?

   A. urea
   B. calcium superphosphate
   C. diammonium phosphate
   D. potassium nitrate

10. Phosphorus is a Greek word and it means_________________?

    A. Light bearing
    B. Fire
    C. Impure
    D. Tetrahedral