Agriculture - Mock Test 83

Question 821

A soil which has pH less than 8.5, ESP less than 15 and EC more than 4 mmhos/cm at 25 ?

A) Saline soil B) Alkaline soil C) Saline-alkali soil D) None of these

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Question 822

A soil absorbs about _____ of incoming solar radiation?

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

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Question 823

A sequence of soil of about same age, derived from same parent material and occurring under similar climatic conditions but has different characteristics due to variation in relief and drainage is termed as?

A) Soil series B) Catina C) Soil phase D) None of the above

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Question 824

A property of fluids by virtue of which it reduces the relative motion among different layers of fluid, is termed as?

A) Soil consistency B) Soil specificity C) Soil viscosity D) None of these

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Question 825

A pH value of 6.0 indicates that the soil reaction is?

A) Acidic B) Alkaline C) Neutral D) Highly alkaline

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Question 826

A man made epipedon in many characters except P2O5 content (more than 250 ppm) is?

A) Hisitic epipedon B) Ochric epipedon C) Anthropic epipedon D) Umbric epipedon

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Question 827

A complex mixture of brown amorphous and colloidal substances synthesized by various soil organisms is referred to as?

A) Compost B) Humus C) FYM D) Peat super compost

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Question 828

A combination of many taxonomic units like soil series, phase or types is called?

A) Soil variant B) Soil series C) Soil complex D) Soil association

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Question 829

95 to 99.5% portion of plant tissues are made up of?

A) N, P and K B) C, Hand O C) Ca, Mg and C D) None of these

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Question 830

The neutralizing values of the following liming materials are such that?

A) CaO > Ca(OH)2 > CaCO > CaMg(CO3)2 B) CaO > Ca(OH)2 > CaMg(CO3)2 > CaCO3 C) Ca(OH)2 > CaO > CaMg(CO3)2 > CaCO3 D) CaCO3 > aO > Ca(OH)2 > CaMg(CO3)2

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