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...