Free Agronomy MCQs with Answers

• A. Spectrophotometer
• B. Tint meters
• C. All the above
• D. Disc colourimetry

Explanation: Food colour can be measured instrumentally with spectrophotometers, tint meters and disc colourimetry.

• A. Lactic fermentation
• B. Non of the aboveFood
• C. Alcoholic fermentation
• D. Acetic fermentation

Explanation: Vinegar results when acetic acid bacteria oxidise ethanol into acetic acid in the presence of oxygen, a process commonly called acetic…

• A. Coffee
• B. Bread
• C. Season ting
• D. Chapati

Explanation: Bread is produced by fermenting cereal flour dough, usually with yeast, which converts sugars into carbon dioxide and ethanol; the carbon…

• A. Wheat
• B. Com
• C. Barley
• D. Rice

Explanation: Barley is the traditional principal grain for beer because malting develops enzymes that convert its starch into fermentable sugars.

• A. Acetic acid + H2O
• B. All the above
• C. Ethyl alcohol + H2O
• D. Ethyl alcohol + CO2

Explanation: In alcoholic fermentation, yeast converts sugars mainly into ethyl alcohol and carbon dioxide: glucose is broadly represented as ethanol…

• A. Food preservation
• B. Food science
• C. Food technology
• D. Food processing

Explanation: Food preservation includes the scientific and engineering methods used to delay spoilage and extend shelf life.

• A. Food Science
• B. Food processing
• C. Nutrition
• D. Food technologyEveryday Science Mcqs

Explanation: Nutrition studies the fate of food after ingestion, including digestion, absorption, metabolism, and utilization by the body.

• A. Citric cycle
• B. Calvin-Benson cycle
• C. Fermentation
• D. Glycolysis

Explanation: Glycolysis is the pathway that breaks one glucose molecule into two molecules of pyruvic acid, producing a small amount of ATP and NADH.

• A. Cell division
• B. Cell elongation
• C. Cell differentiation
• D. Cell production

Explanation: Auxin primarily promotes cell elongation by loosening cell walls and increasing water uptake.

• A. 10ºC
• B. 4ºC
• C. -1ºC
• D. 2ºC

Explanation: For many crop plants, essential physiological activities become greatly reduced and may cease around the minimum temperature of 4°C.

• A. Colorimeter
• B. Paramagnetic analyzer
• C. Hygrometer
• D. none of the above

Explanation: A hygrometer measures atmospheric humidity, either directly or through changes in a sensing material.

• A. More
• B. Too muchAccess Government Careers
• C. No
• D. Less

Explanation: High humidity reduces the vapour-pressure gradient between the leaf and surrounding air, so the driving force for water loss falls and…

• A. ATP
• B. UTP
• C. CTP
• D. KTP

Explanation: Photophosphorylation is the light-driven formation of ATP from ADP and inorganic phosphate in chloroplasts.

• A. Glycogen
• B. Starch
• C. Sucrose
• D. None of the above

Explanation: Plants commonly convert surplus glucose into starch, an osmotically safer storage carbohydrate that can later be broken down for energy.

• A. Polysaccharide
• B. Monosaccharide
• C. Disaccharide
• D. Trisaccharide

Explanation: Raffinose is a trisaccharide made of galactose, glucose and fructose. It belongs to the raffinose family of oligosaccharides rather than…

• A. Inner membrane of mitochondria
• B. Cytoplasm
• C. matrix of mitochondria
• D. Chloroplast

Explanation: In aerobic respiration, the electron transport chain is embedded in the inner mitochondrial membrane, where electrons pass through…

• A. Ribosome's
• B. Mitochondria
• C. Lysosomes
• D. Plastids

Explanation: Mitochondria contain the respiratory enzymes and electron-transport machinery used to release energy through cellular respiration.

• A. Glycogen
• B. Cellulose
• C. Strach
• D. Fat

Explanation: Plants commonly store excess photosynthetic food as starch, an insoluble polysaccharide that can later be converted back into sugars.

• A. Nitrogen
• B. Potassium
• C. Phosphorus
• D. Zinc

Explanation: Nitrogen promotes leaf formation, chlorophyll production, and vigorous vegetative growth, giving plants a characteristic green colour.

• A. Iron
• B. Phosphorus
• C. Potassium
• D. Nitrogen

Explanation: Phosphorus deficiency commonly causes anthocyanin accumulation, giving older leaves a reddish-purple or purplish appearance.