Agricultural Chemicals: Pesticides MCQ (Multiple Choice Questions and Answers)
Question 1: Agricultural chemical denote
(A) Pesticides
(B) Pesticides and fertilizers
(C) Fertilizers and growth regulators
(D) Pesticides, fertilizers and growth regulators
Answer: (D)
Question 2: Growth regulators produce
(A) Stimulation of growth
(B) Retardation of growth
(C) Some cause stimulation while others bring about retardation
(D) Shedding of leaves
Answer: (C)
Question 3: Loss of agricultural productivity due to pests and diseasesis
(A) 1%
(B) 30%
(C) 5%
(D) 15%
Answer: (B)
Question 4: Household Pesticide sprays are
(A) Finit (flit)
(B) Finit and Baygon
(C) Finit, baygon, mosquito coils and cakes
(D) DDT
Answer: (B)
Question 5: Carbamates include
(A) Fungicides, herbicides and insecticides
(B) Insecticides only
(C) Herbicides, insecticides and nematicides
(D) Insecticides, nematicides and rodenticides
Answer: (A)
Question 6: The first organic pesticide to be used commercially was
(A) Bordeaux mixture
(B) Burgandy mixture
(C) DDT
(D) 2 : 4 – D
Answer: (C)
Question 7: Bordeaux mixture is
(A) Organochlorine
(B) Antibiotic
(C) Organophosphate
(D) Inorganic fungicide
Answer: (D)
Question 8: The most famous pesticide of world is
(A) BHC
(B) DDT
(C) Baygon
(D) Flit
Answer: (B)
Question 9: In India, the most, commonly used pesticide BHC is
(A) Carbamate
(B) Triazine
(C) Organochlorine
(D) Antibiotic
Answer: (C)
Question 10: The pesticide used in foundations of buildings for preventing termite attack is
(A) DDT
(B) BHC
(C) Endrin
(D) Aldrin
Answer: (D)
Question 11: The chemical present in Temik is
(A) Malathion
(B) Propoxur
(C) Carbofuran
(D) Aldicarb
Answer: (D)
- The chemical present in flit (finit) is
(A) Malathion
(B) DDT
(C) BHC
(D) Aldicarb
Answer: (A)
- The number of organophosphates synthesized is
(A) 1000
(B) 100
(C) 10,000
(D) 100,000
Answer: (D)
14: The mode of action of insecticides is through the attack on
(A) Respiratory system
(B) Nervous system
(C) Muscular system
(D) Both A and B
Answer: (D)
15: The common mode of action of herbicides is
(A) Blocking of xylem channels
(R) Blocking of phloem channels
(C) Blocking of photosystem II
(D) Blocking of photosystem I
Answer: (C)
- One of earliest pesticides employed by humans was
(A) Nicotine
(B) Margosa (Neem) leaves
(C) Pyrethrum
(D) DDT
Answer: (B)
17: An example of pesticide treadmill is
(A) Forty times increase in requirement for cotton
(B) Development of mosquito resistance to DDT, BHC, malathion and fenitrothion
(C) Decreasing use of pesticides due to introduction of biological control
(D) Decreasing use of pesticides due to decrease in the population of pests
Answer: (A)
18: DDT concentration increases in the human body because it is soluble in
(A) Water
(B) Vitamins
(C) Fat
(D) Protein
Answer: (C)
- Pest is
(A) Organism feeding on and damaging others
(B) Furgal pathogen attacking plants and animals
(C) Bacterial pathogen attacking plants and animals
(D) Viral pathogen attacking organisms
Answer: (A)
Question 20: DDT and 2, 4-D were introduced
(A) Towards end of World War II
(B) Towards beginning of World War II
(C) During World War I
(D) Just after thc World War I
Answer: (A)
2l: Bordeaux mixture is named after
(A) Scientist
(B) Chemical composition
(C) Country
(D) University
Answer: (D)
22: Insecticides kill
(A) Harmful insects
(B) Both harmful and useful insects
(C) Specific insects
(D) Only plant pests
Answer: (B)
- Which is organochlorine?
(A) Malathion
(B) Pararhion
(C) Aldicarh
(D) DDT
Answer: (D)
- Which one is an organophosphate?
(A) BHC
(B) Aldrin
(C) Fenitrothion
(D) Endosulphan
Answer: (C)
- A carbamate pesticide is
(A) Propoxur
(B) Simazine
(C) Atrazine
(D) Tetraethyl pyrophosphate
Answer: (A)
Question 26: Urea derivate pesticides belong to the category of
(A) Organochlorines
( B)Organophosphares
(C) Carbamates
(D) Triazines
Answer: (D)
27: Carbamates employed as insecticide are
(A) Phenylcarbamates
(B) Thiocarbamates
(C) Propoxur
(D) Dithiocarbamates
Answer: (C)
28: Carbamates used as fungicides are
(A) Thiocarbamates
(B) Dithiocarbamates
(C) Carbofuran
(D) Carbofuran and Aldicarb
Answer: (B)
- The pesticides having very low biodegradation and strong affinity for fatty tissues are
(A) Organochlorines
(B) Organophosphates
(C) Triazines
(D) Pyrethroids
Answer: (A)
- Pesticide ingredient methyl isocyanate which killed thousands in Bhopal gas tragedy is intermediate of
(A) Mustard gas
(B) Nitrous acid
(C) Carbaryl
(D) Carbon tetrachloride
Answer: (C)
Question 31: The most common pesticide used in India is
(A) DDT
(B) Endrin
(C) BHC
(D) Baygon
Answer: (C)
- Pesticides comprise
(A) Herbicides and insecticides
(B) Insecticides
(C) Insecticides, nematicides and rodenticides
(D) Fungicides, herbicides, insecticides, nematicides and rodenticides.
Answer: (D)
- Herbicide carbamates are
(A) Dithiocarbamates
(B) Thiocarbamates
(C) Phenyl carbamates
(D) Both B and C
Answer: (D)
- Household pesticides consist of
(A) Finit, Baygon, Mosquito repellent cakes and coils
(B) Finit and Baygon
(C) Finit/Flit
(D) DDT
Answer: (A)
Question 35: DDT is
(A) Carbamate
(B) Organophosphare
(C) Organochlorine
(D) Triazine
Answer: (C)
Question 36: First commercial pesticide was
(A) Burgandy mixture
(B) Bordeaux mixture
(C) DDT
(D) 2 : 4 – D
Answer: (B)
Question 37: Mode of pesticide action is similar in
(A) DDT and parathion
(B) Organochlorines and organophosphates
(C) Organochlorines and carbamates
(D) Organophosphates and carbamates
Answer: (D)
Question 38: BHC is
(A) Benzene hexachloride
(B) Benzene heptachloride
(C) Benzene hydrochloride
(D) BromiCe herbicide
Answer: (A)
Question 39: Herbicides prevent
(A) Transpiration
(B) Water absorption
(C) Translocation of salts
(D) Photolysis of water
Answer: (D)
Question 40: Pesticides generally attack
(A) Muscular system
(B) Respiratory system
(C) Nervous system
(D) Circulatory system
Answer: (C)
Question 41: Pests resistant to insecticides have
(A) Enzyrnes for metabolising toxins
(B) Ability to store toxin in fat
(C) Less permeable cuticles
(D) All the above
Answer: (D)
Question 42: Most effective pesticides are
(A) Carbamates
(B) Organochlorines
(C) Organophosphates
(D) All the above
Answer: (C)
Question 43: DDT content in Indian population has touched
(A) 1 – 12 ppm
(B) 11 – 30 ppm
(C) 25 – 50 ppm
(D) 48 – 98 ppm
Answer: (B)
Question 44: Which one is not matched?
(A) Organochlorine – DDT
(B) Pyrethroid – Atrazine
(C) Organophosphate – Malathion
(D) Carbamate – Carbofuran
Answer: (B)
Question 45: Pesticides with very low biodegradation but strong affinity for fatty tissues are
(A) Organochlorines
(B) Organophosphates
(C) Pyrethroids
(D) Triazines
Answer: (A)
Question 46: Bordeaux mixture was formulated by
(A) Leeuwenhoek
(B) Tillet
(C) De Bary
(D) Millardet
Answer: (D)
Question 47: Baygon contains
(A) Malathion
(B) Carbofuran
(C) Propoxur
(D) Aldicarb
Answer: (C)
Question 48: Which ingredient killed hundreds of people
in Bhopal gas tragedy ?
(A) Nitrous acid
(B) Mustard gas
(C) Carbon tetrachioride
(D) Methyl iscoyanate
Answer: (D)
Question 49: DDT is
(A) Biodegradable
(B) Non-biodegradahle
(C) Antibiotic
(D) Growth regulator
Answer: (B)
Question 50: Which is a fungicide?
(A) 2 : 4 – D
(B) DDT
(C) Bordeaux mixture
(D) BHC
Answer: (C)