Agriculture - Mock Test 61

Question 601

Nitrification in the soil take place by?

A) Reduction process B) Oxidation process C) Biological oxidation D) Both a and b

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Question 602

Nitrate levels in drinking water above about ______ mg per litre are considered a human health hazard?

A) 5 B) 10 C) 15 D) 20

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Question 603

Which one of the following pairs is correct?

A) Urea - 42% B) DAP - 20% C) (NH4)2 SO4 - 21.5% D) MoP - 47.5%

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Question 604

Na Ai Si2O8 is the formula of?

A) Anorthite B) Albite C) Mica D) Illite

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Question 605

N, P, K percent in cotton seed cake is?

A) 4, 1.9, 2 B) 1.9, 2, 4 C) 4, 1.9, 1.7 D) 1.7, 4, 1

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Question 606

Mycorrihiza-infected plants show better growth than uninfected plants, especially on?

A) Low fertility soils B) High fertility soils C) Marshy soils D) Desert soils

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Question 607

Mycorrhiza-infected plants show better ability of absorption of the nutreients, especially?

A) Iron B) Manganese C) Potassium D) Phosphorus

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Question 608

Muratt of potash contains?

A) 40%K2O B) 36%K2O C) 50%K2O D) None of the above

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Question 609

Most resistant mineral present in soil is?

A) Mica B) Hornblende C) Quartz D) None of above

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Question 610

Most of the plants are likely to suffer if the soil volume occupied by air is less than ______ per cent?

A) 20-25 B) 15-20 C) 12?15 D) 10?11

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