The chemical decomposition produced by micro-organisms on certain organic matter is

The chemical decomposition produced by micro-organisms on certain organic matter is
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called fermentation.
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The process of decomposition of organic matter is termed as

Description : The process of decomposition of organic matter is termed as

Last Answer : Ans. Humification

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What is vermiculture? a. Rearing of silkworms for production of silk b. Care and management of honey bees for the production of honey and wax. c. Cultivation of earthworms, for decomposition of organic waste d. Care and management of honey bees for the production of honey and wax.

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What is vermiculture? (Agriculture MCQ) a. Rearing of silkworms for production of silk b. Care and management of honey bees for the production of honey and wax. c. Cultivation of earthworms, for decomposition of organic waste

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What is vermiculture? a. Rearing of silkworms for production of silk b. Care and management of honey bees for the production of honey and wax. c. Cultivation of earthworms, for decomposition of organic waste d. Care and management of honey bees for the production of honey and wax

Description : What is vermiculture? a. Rearing of silkworms for production of silk b. Care and management of honey bees for the production of honey and wax. c. Cultivation of earthworms, for decomposition of organic waste d. Care and management of honey bees for the production of honey and wax

Last Answer : c. Cultivation of earthworms, for decomposition of organic waste

What is vermiculture? (Agriculture MCQ) a. Rearing of silkworms for production of silk b. Care and management of honey bees for the production of honey and wax. c. Cultivation of earthworms, for decomposition of organic waste

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Last Answer : c. Cultivation of earthworms, for decomposition of organic waste

Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy. (2) The process occurs at a temperature above 430°C at atmospheric pressure. (3) The process occurs under high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant ... high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Last Answer : The process occurs at a temperature above 430°C at atmospheric pressure.

The biological decomposition of organic substances in wastes under controlled conditions known as (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis

Description : The biological decomposition of organic substances in wastes under controlled conditions known as (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis

Last Answer : composting

Fermentation is a process of decomposition of an organic compound by : (1) catalysts (2) enzymes (3) carbanions (4) free radicals

Description : Fermentation is a process of decomposition of an organic compound by : (1) catalysts (2) enzymes (3) carbanions (4) free radicals

Last Answer : enzymes

To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of A. Hydrochloric acid B. Sulphuric acid C. Nitric acid D. Citric acid

Description : To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of A. Hydrochloric acid B. Sulphuric acid C. Nitric acid D. Citric acid

Last Answer : ANS: B

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Last Answer : (D) All (A), (B) and (C)

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High quality crop soil requires humus as a major component. Which of the following best describes the composition of humus w) fine sand particles x) decaying organic matter y) mineral like clay matter z) chemical fertilizers

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Last Answer : ANSWER: X -- DECAYING ORGANIC MATTER 

All decomposition reaction are endothermic but decomposition of vegetable matter into compost is exothermic because (a) It is an oxidation reaction (b) decomposition done by microbes (c) releases heat energy (d) all the above

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Sulphur dioxide bleaches colouring matter by – (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Description : Sulphur dioxide bleaches colouring matter by – (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Last Answer : (1) Reduction Explanation: Sulphur dioxide gas exhibits bleaching properties in presence of moisture. It dissolves in water liberating nascent hydrogen. Nascent hydrogen removes oxygen atoms from the colouring matter (reduces colouring matter) and it loses its colour.

Black cotton soils are a) Heavy clay soils varying from clay to Loam, with clay content of 40 to 50% formed by decomposition of rocks by long continued weathering* b) Compacted and laminated clays c) Soils containing carbon of coal underneath d) Dark brown earthy materials formed due to partial or complete decomposition of vegetable matter

Description : Black cotton soils are a) Heavy clay soils varying from clay to Loam, with clay content of 40 to 50% formed by decomposition of rocks by long continued weathering* b) Compacted and ... underneath d) Dark brown earthy materials formed due to partial or complete decomposition of vegetable matter

Last Answer : a) Heavy clay soils varying from clay to Loam, with clay content of 40 to 50% formed by decomposition of rocks by long continued weathering*

Sulphur dioxide bleaches colouring matter by : (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

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Last Answer : Reduction

What is an antibiotic? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) Acompound synthesised by a living organism that inhibits the growth of microbes (3) Asynthetic compound inhibiting the growth of other organisms (4) Asynthetic compound inhibiting the growth of bacteria

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Last Answer : A synthetic compound inhibiting the growth of bacteria

The temperature for pasteurization of milk is selected so as to (a) Kill the micro-organisms (b) Kill all bacteria (c) Store it for long time without coagulation (d) Kill the micro organisms and other harmful bacteria

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The statement that is NOT correct is (a) The breaking of complex and big molecules into simpler and smaller molecules by micro-organisms is called fermentation. (b) ****** contains high percentage of methanol. (c) Root **** does not contain alcohol. (d) Alcoholic fermentation involves the conversion of sugars into alcohol by the use of micro-organisms.

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Last Answer : Ans:(b)

$ Louis Pasteur discovered that fermentation is brought about by micro-organisms ! Parasitic becteria bring about fermentation.

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The phosphate solubilizer species of micro organisms is

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Last Answer : Ans. Pseudomonas

Fat present below the skin surface in our body acts as a barrier against – (1) loss of heat from the body (2) loss of essential body fluids (3) loss of salt from the body (4) entry of harmful micro-organisms from the environment

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