A. Rotation of the crops
B. Adding lime to the acid salts
C. Adding manure and growing legumes
D. All
Related Mcqs:
- The quality of petrol is improved by ____________?
A. Cracking
B. Reforming
C. Refining
D. HydrationSubmitted by: Aamir khan Hullio
- Angle of deflection was studied by________________?
A. Hitorff
B. Stoney
C. William Crookes
D. J.Perrin - The relationship between energy of a photon of light and its frequency is given by________________?
A. de-Broglie duel nature of matter
B. Bohrs model
C. Plancks Quantum theory
D. Rutherfords atomic model - Atom cannot be divided into simple unitstheorized by________________?
A. Rutherford
B. Dalton
C. Bohr
D. Schrodinger - The processes of effusion and diffusion are best understand by________________?
A. Daltons law
B. Avogadros law
C. Grahams law
D. Charles law - Idea of pH and pOH was put forward by________________?
A. Gibbs
B. Einstein
C. Sorenson
D. Chadwick - Water of crystallization can be removed by________________?
A. drying
B. heating
C. evaporation
D. All of the above - When the reaction completes in more than one steps rate of reaction will be determined by________________?
A. Fast step
B. Slowest step
C. All steps
D. Molecularity of the reaction - Addition of urea to the soil is ____________ reaction?
A. endothermic
B. exothermic
C. both a and b
D. no heat energy is involved - 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
