Who gave the defination of humic acid ?

Related Mcqs:

1. Humic acid is soluble in______________________?

   A. Acid
   B. Alkali
   C. Both a & b
   D. Distilled water

2. Humic acid is soluble in____________________?

   A. Acid
   B. Alkali
   C. Both a & b
   D. None of the above

3. Extraction of humic substance can be done by______________________?

   A. NaOH
   B. NH4Cl
   C. NH4OH
   D. None of the above

4. Humus generally refers to the decomposed organic residues which have undergone a series of degradation and synthesis cycles. The humic substances consist of a series of highly acidic, yellow to black coloured, high molecular weight compounds __________________, which can be separated using different extraction procedures:

   A. Hymatomelanic  acid & Humin
   B. Humic acid & Fulvic acid
   C. both A & B
   D. None of these

   Submitted by: Shafiq Rehman

5. Who gave the equation for study of soil property ?

   A. Ziebig
   B. Newton
   C. Neil
   D. Jenny

6. Who gave the principle that man tends to multiply faster than food supply________________?

   A. Mathis
   B. Mendel
   C. Darwin
   D. Haldane

7. Who gave the model of DNA_________________?

   A. Watson and Crick
   B. Tatum
   C. Koran
   D. Dtanele

8. Acid soils of the world’s arable comprise up to_____________________?

   A. 40%
   B. 30%
   C. 58%
   D. 20%

9. While diluting acid always add_____________________?

   A. Acid to water
   B. Water to acid
   C. Both a & b
   D. none

10. Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?

    A. Alkaline
    B. Very much acidic
    C. Calcareous
    D. both A & C

    Submitted by: Shafiq Rehman