Boron in soil has been considered micronutrient for_________________?

Related Mcqs:

1. Boron is non metal while other elements of IIIA group are metals. This is because______________?

   A. it has small size
   B. it has high nuclear charge
   C. it forms molecular addition compounds
   D. all of the above

2. Boron is non-netal whereas A1 is metal. It is due to_______________________?

   A. Small size
   B. High nuclear charge
   C. Both A and B
   D. No authorized justification yet

3. One of the outstanding features of boron is its ability to form__________________?

   A. Molecular addition compounds
   B. Molecular crystals
   C. Semiconductors
   D. Ionic compounds

4. The type of hybridisation of boron in diborane is______?

   A. Sp- hybridisation
   B. Sp2- hybridisation
   C. Sp3- hybridisation
   D. Sp3d2- hybridisation

   Submitted by: Muhammad Ali Kunbhar

5. The fertility of the soil is improved by________________?

   A. Rotation of the crops
   B. Adding lime to the acid salts
   C. Adding manure and growing legumes
   D. All

6. Addition of urea to the soil is ____________ reaction?

   A. endothermic
   B. exothermic
   C. both a and b
   D. no heat energy is involved

7. Gypsum is applied to the soil as a source of________________?

   A. Ca and P
   B. S and P
   C. Ca and S
   D. we could not apply

8. Soil pollution is caused by:_________?

   A. Aerosol
   B. Ozone
   C. Acid rain
   D. PAN

   Submitted by: Fahad Mehsud

9. Which of the following is not considered as an intermolecular force between molecules ?

   A. Coordinate covalent bonds
   B. Hydrogen bonds
   C. Debye forces
   D. London dispersion forces

10. Potential of SHE is considered as__________________?

    A. zero
    B. unity
    C. constant
    D. multiple of 1