Agriculture - Mock Test 64

Question 631

Land capability classes have?

A) 3 categories B) 4 categories C) 5 categories D) 8 categories

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Question 632

Kharia disease of rice is diagnosed by?

A) Necrotic lesions B) Dark reddish brown pigmentation C) Yellowish spots on leaves D) Black pinhead points on leaf

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Question 633

Kaolinite is a ______ type clay mineral?

A) 1;1 B) 2;1 C) 2;2 D) None of these

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Question 634

K2 (Si5 Al2)Al4O2 (OH)4 is the formula of?

A) Muscovite B) Biotite C) Monmorillonite D) Kaolinite

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Question 635

K in igneous rocks is about?

A) 8.90% B) 2.50% C) 3.10% D) 18.50%

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Question 636

Is potassium takes parts in metabolic activity?

A) Yes B) No C) May or may not be D) None of the above

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Question 637

Is called father of pedology?

A) V V Dokuchaev B) D G Vilensky C) C F Marbut D) K D Glinka

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Question 638

Irrigation with sodic water increase the availability of?

A) Sodium B) Molybdenum C) Zinc D) Chloride

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Question 639

Which one of the following sets of soil condition is more suitable for plant growth?

A) Sandy soils with high aeration and low water holding capacity B) Clay soils with higher water holding capacity and low aeration C) Organic soils with high water holding capacity and low aeration D) Loamy soils with medium aeration and medium water holding capacity

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Question 640

Iron helps in chlorophyll synthesis because?

A) It is associated with chlorophyll B) It is absent in chlorophyll C) It activates enzyme nitrogen reductase D) None of the above

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