All Free Agriculture MCQs with Answers

• A. Platy form
• B. carabifrom
• C. Vermiform
• D. Cruciform

Explanation: Cruciform, or caterpillar-like, larvae possess three pairs of thoracic legs plus abdominal prolegs.

• A. Agitation
• B. Synergism
• C. Adjuvant
• D. Activator

Explanation: Agitation keeps pesticide particles or droplets uniformly suspended in the spray mixture and prevents settling or separation inside the…

• A. Technical scientific officer
• B. Technical sales officer
• C. Tehsil sale officer
• D. None of the Above

Explanation: In pesticide and agricultural input distribution, TSO commonly means Technical Sales Officer, the person responsible for technically…

• A. Dichloro-diphenyl,trichloro,ethane
• B. Dimethory diphenyl,trichloro,ethane
• C. Dichloro diphenyl teracholoride
• D. None of the Above

Explanation: DDT is the abbreviation for dichlorodiphenyltrichloroethane, a formerly important organochlorine insecticide.

• A. Lefenuron, Chlorfluazuron, Flufenoxum
• B. Formothion
• C. Methamidohpos
• D. All the above

Explanation: Lufenuron, chlorfluazuron and flufenoxuron are insect growth regulators particularly effective against caterpillar, or lepidopterous…

• A. Monocrotophos, Diazinon, Profenophos
• B. All the above
• C. Cypermethrin, Permethrin,Malathion
• D. Endosulfan, Deltamethrin, Dimethoate

Explanation: All three groups contain broad-spectrum insecticides that can act against both chewing insects and sucking pests, although their…

• A. LC50
• B. None of the Above
• C. LD50
• D. LD75

Explanation: LD50 is the median lethal dose, meaning the dose that kills 50% of a test population.

• A. Poison
• B. Poisonous material
• C. None of the Above
• D. Both of them

Explanation: In basic pesticide terminology, toxic refers to a poison or poisonous agent capable of causing harmful effects.

• A. Toxicant
• B. Neurotoxin
• C. Drift
• D. Swath

Explanation: A neurotoxin is a toxin that specifically damages or disrupts nerve tissue and nervous-system function.

• A. Neurotoxin
• B. Toxicant
• C. Toxin
• D. None of the Above

Explanation: A toxin is a poison produced naturally by a living organism such as a plant, animal, fungus or bacterium.

• A. Agitation
• B. Adjuvant
• C. Activator
• D. Adhesive

Explanation: An adhesive, also called a sticker, helps pesticide droplets remain attached to the treated plant surface.

• A. Activator
• B. Agitation
• C. Adjuvant
• D. Synergism

Explanation: An activator is added to a pesticide formulation to improve or increase the activity of its active ingredient.

• A. Defoliant
• B. Acute poisoning
• C. Chronic poisoning
• D. Bait

Explanation: Acute poisoning produces harmful effects or death after a single dose or brief exposure, whereas chronic poisoning develops after repeated…

• A. Organophosphate
• B. Carbamte
• C. Organ chlorine
• D. Pyrethorid

Explanation: Diazepam is used particularly to control the convulsions associated with organochlorine poisoning.

• A. None of the Above
• B. Increase the effects of a poison
• C. No action against pesticide
• D. Treatment given to counteract the effects of a poison

Explanation: An antidote is a treatment that counteracts or neutralises the toxic effects of a poison.

• A. Red
• B. Blue
• C. Yellow
• D. Brown

Explanation: In the commonly used pesticide hazard colour bands, red indicates the highest or extreme hazard to humans.

• A. Sterilant
• B. Fumigants
• C. Insect growth regular
• D. Protectant

Explanation: Insect growth regulators interfere with development, including moulting, so larvae cannot progress normally to the next stage.

• A. Fumigants
• B. Protectant
• C. Selective
• D. Sterilant

Explanation: A sterilant prevents pests from reproducing, reducing population growth without necessarily killing every adult immediately.

• A. Additive mixture
• B. Antagonistic mixture
• C. Potentiating mixture
• D. None of the Above

Explanation: An additive mixture has a combined effect equal to the sum of the separate effects, so neither pesticide enhances nor reduces the other’s…

• A. Organophosphrous
• B. Pyrethroids
• C. Organochlorine
• D. Carbamate

Explanation: Cypermethrin, deltamethrin and permethrin are synthetic pyrethroids, modelled on naturally occurring pyrethrins from chrysanthemum…