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361.

The average chemical composition of NPK of night soil is:

A.	3.7 - 4.0 - 2.0	B.	0.5 - 0.6 - 0.5
C.	2.0 - 2.6 - 0.5	D.	5.5 - 4.0 - 2.0

362.

The average soil bulk density of cultivated loamy soil is approximately:

A.	0.5 - 1.0 gm cm-3	B.	1.5 - 1.65 cm-3
C.	1.1 - 1.4 gm cm-3	D.	None of the above

363.

The bacteria considered most important to bring about the conversion of NH4 to NH2:

A.	Nitrosomonas	B.	Nitrobacteria
C.	Both (a) & (b)	D.	Azotobacter

364.

The bacteria responsible for fixation of nitrogen in soyabean are:

A.	Rhyzobium lguminoserum	B.	Rhyzobium phaseoil
C.	Rhyzobium glycicum	D.	Rhyzobium japonicum

365.

The best estimate of the available P in phosphatic fertilizers is obtained from the:

A.	Water soluble fraction	B.	Citrate insoluble fraction
C.	Citrate soluble fraction	D.	Water soluble and citrate soluble fraction

366.

The biological method for determining defidency of lime, P and K is:

A.	Neubauers method	B.	Aspergillus niger test
C.	Azotobacter plaque test	D.	None of the above

367.

Which one of the following concentrated organic manures has maximum P2O5 content?

A.	Fish meal	B.	Stera meat
C.	Poultry manure	D.	Guano

368.

The C.E.C. of illite is about:

A.	100 m.e./100 g	B.	140 m.e./100 g
C.	40 m.e./100 g	D.	10 m.e./100 g

369.

The C.E.C. of mica is about:

A.	10 m.e./100 g	B.	100 m.e./100 g
C.	50 m.e./100 g	D.	140 m.e./100 g

370.

The C:N ratio in the organic matter of the furrow slice (upper 15 cm) of arable soils commonly ranges from?

A.	3:1 to 4:1	B.	6:1 to 7:1
C.	18:1 to 19:1	D.	8:1 to 15:1