1. Which country is the largest producer of tobacco in the world?
A. Brazil
B. India
C. China
D. USA
Answer: C. China
Rationale: China leads global tobacco production, contributing over 40% of the total.
2. In India, which state is the largest producer of tobacco?
A. Karnataka
B. Andhra Pradesh
C. Gujarat
D. Tamil Nadu
Answer: C. Gujarat
Rationale: Gujarat produces the highest quantity, mainly bidi and chewing tobacco.
3. Which type of tobacco is mainly grown in Andhra Pradesh?
A. Flue-cured Virginia (FCV)
B. Burley
C. Oriental
D. Rustica
Answer: A. Flue-cured Virginia (FCV)
Rationale: Andhra Pradesh specializes in FCV tobacco for cigarettes.
4. Which curing method is used for Flue-Cured Virginia tobacco?
A. Sun curing
B. Fire curing
C. Flue curing
D. Air curing
Answer: C. Flue curing
Rationale: Flue curing uses heated air without smoke to preserve leaf color and aroma.
5. The botanical name of cultivated tobacco is:
A. Nicotiana rustica
B. Nicotiana tabacum
C. Nicotiana benthamiana
D. Nicotiana sylvestris
Answer: B. Nicotiana tabacum
Rationale: N. tabacum is the most widely cultivated species for commercial tobacco.
6. Nicotiana rustica is mainly used for:
A. Cigarette tobacco
B. Chewing tobacco
C. Hookah and snuff
D. Cigar wrapper
Answer: C. Hookah and snuff
Rationale: N. rustica has high nicotine content, suitable for hookah and snuff.
7. Which nutrient deficiency causes “Frog-eye leaf spot” appearance in tobacco?
A. Potassium
B. Nitrogen
C. Magnesium
D. Boron
Answer: A. Potassium
Rationale: Potassium deficiency causes necrotic spots giving a “frog-eye” pattern.
8. The optimum temperature for flue-curing tobacco is:
A. 20–25°C
B. 30–35°C
C. 35–70°C (gradual rise)
D. Above 80°C
Answer: C. 35–70°C (gradual rise)
Rationale: Curing starts around 35°C and is gradually increased to 70°C.
9. Which tobacco variety is resistant to black shank disease?
A. CTRI Special
B. Bhavya
C. GT 5
D. Siri
Answer: B. Bhavya
Rationale: Bhavya is a CTRI-bred variety with resistance to black shank.
10. The Tobacco Board of India functions under which ministry?
A. Ministry of Agriculture
B. Ministry of Commerce and Industry
C. Ministry of Food Processing
D. Ministry of Rural Development
Answer: B. Ministry of Commerce and Industry
Rationale: The Tobacco Board regulates production and export under the Commerce Ministry.
11. Which insect pest is known as the “tobacco caterpillar”?
A. Spodoptera litura
B. Helicoverpa armigera
C. Myzus persicae
D. Bemisia tabaci
Answer: A. Spodoptera litura
Rationale: Spodoptera litura feeds voraciously on tobacco leaves.
12. Brown spot disease of tobacco is caused by:
A. Alternaria alternata
B. Cercospora nicotianae
C. Phytophthora parasitica
D. Peronospora tabacina
Answer: B. Cercospora nicotianae
Rationale: Brown spot is a common fungal disease caused by C. nicotianae.
13. Which alkaloid is primarily responsible for tobacco’s stimulant properties?
A. Nicotinamide
B. Nicotine
C. Anabasine
D. Caffeine
Answer: B. Nicotine
Rationale: Nicotine is the main alkaloid affecting the nervous system.
14. Tobacco mosaic virus (TMV) is transmitted mainly by:
A. Aphids
B. Thrips
C. Mechanical contact
D. Whiteflies
Answer: C. Mechanical contact
Rationale: TMV spreads through sap contamination, not insect vectors.
15. The recommended plant spacing for FCV tobacco is:
A. 75 × 60 cm
B. 90 × 60 cm
C. 100 × 100 cm
D. 60 × 45 cm
Answer: B. 90 × 60 cm
Rationale: This spacing provides optimum growth and aeration.
16. Which country is the largest importer of Indian FCV tobacco?
A. USA
B. Russia
C. Belgium
D. China
Answer: D. China
Rationale: China is the leading buyer of Indian flue-cured tobacco.
17. Which process improves the aroma of cured tobacco during storage?
A. Fermentation
B. Drying
C. Irradiation
D. Washing
Answer: A. Fermentation
Rationale: Controlled fermentation enhances aroma and reduces harshness.
18. The ideal soil pH for tobacco cultivation is:
A. 4.5–5.0
B. 5.5–6.5
C. 7.0–8.0
D. Above 8.5
Answer: B. 5.5–6.5
Rationale: Slightly acidic soils are optimal for quality tobacco.
19. Which tobacco curing method uses open fires to produce smoke flavor?
A. Flue curing
B. Fire curing
C. Air curing
D. Sun curing
Answer: B. Fire curing
Rationale: Fire curing exposes leaves to smoke for flavor, used in chewing tobacco.
20. Which fertilizer element is avoided in excess for tobacco to prevent harsh smoke?
A. Nitrogen
B. Phosphorus
C. Potassium
D. Calcium
Answer: A. Nitrogen
Rationale: Excess nitrogen produces dark leaves and harsh smoke.
21. Which stage is best for harvesting FCV tobacco leaves?
A. Green stage
B. Immature yellow stage
C. Mature ripe stage
D. Dry stage
Answer: C. Mature ripe stage
Rationale: At this stage, leaves have optimal sugar and nicotine content for curing.
22. “Chloride injury” in tobacco is caused by excessive:
A. Sodium chloride in soil
B. Potassium chloride fertilizer
C. Rainwater leaching
D. Sulfate fertilizers
Answer: B. Potassium chloride fertilizer
Rationale: Chloride ions cause leaf burn and poor quality in tobacco.
23. The “Siri” variety of tobacco is grown mainly in:
A. Karnataka
B. Gujarat
C. Andhra Pradesh
D. Tamil Nadu
Answer: A. Karnataka
Rationale: Siri is a popular FCV variety in Karnataka.
24. Which micronutrient is often required for tobacco to avoid “Top sickness”?
A. Zinc
B. Boron
C. Molybdenum
D. Copper
Answer: B. Boron
Rationale: Boron deficiency causes malformation and brittle leaves.
25. The flue-curing process generally takes:
A. 2–3 days
B. 5–7 days
C. 10–12 days
D. Over 2 weeks
Answer: B. 5–7 days
Rationale: Flue-curing is completed in under a week for optimal quality.
26. Which organism causes black shank disease in tobacco?
A. Phytophthora nicotianae
B. Ralstonia solanacearum
C. Pythium aphanidermatum
D. Fusarium oxysporum
Answer: A. Phytophthora nicotianae
Rationale: It causes stem rot and root damage known as black shank.
27. Which part of the tobacco plant contains the highest nicotine concentration?
A. Roots
B. Mid-stalk leaves
C. Flowers
D. Seeds
Answer: A. Roots
Rationale: Nicotine is synthesized in roots and transported to leaves.
28. “White mold” in tobacco is caused by:
A. Sclerotinia sclerotiorum
B. Alternaria alternata
C. Botrytis cinerea
D. Cercospora nicotianae
Answer: A. Sclerotinia sclerotiorum
Rationale: It causes fluffy white mycelial growth on stems and leaves.
29. Which tobacco product uses mainly air-cured leaves?
A. Cigarette
B. Bidi
C. Cigar
D. Hookah
Answer: C. Cigar
Rationale: Cigar wrapper and filler use air-cured tobacco for smooth flavor.
30. Which irrigation method is preferred for high-quality tobacco?
A. Flood irrigation
B. Furrow irrigation
C. Drip irrigation
D. Sprinkler irrigation
Answer: C. Drip irrigation
Rationale: Drip provides uniform moisture and avoids waterlogging.
31. The “Desi” tobacco variety belongs to:
A. Nicotiana rustica
B. Nicotiana tabacum
C. Nicotiana benthamiana
D. Nicotiana sylvestris
Answer: A. Nicotiana rustica
Rationale: Desi tobacco refers to N. rustica types with strong flavor.
32. Which insect pest is also called “green peach aphid” in tobacco?
A. Myzus persicae
B. Bemisia tabaci
C. Aphis gossypii
D. Thrips tabaci
Answer: A. Myzus persicae
Rationale: It transmits viruses like Potato virus Y to tobacco.
33. Which is a registered Geographical Indication (GI) for Indian tobacco?
A. Nippani tobacco
B. Kurnool tobacco
C. Hunsur tobacco
D. Guntur tobacco
Answer: A. Nippani tobacco
Rationale: Nippani tobacco from Karnataka has GI recognition.
34. Which tobacco curing uses only natural sunlight?
A. Flue curing
B. Fire curing
C. Air curing
D. Sun curing
Answer: D. Sun curing
Rationale: Leaves are dried under the sun, common for bidi tobacco.
35. Which enzyme in tobacco is responsible for nicotine synthesis?
A. Nitrite reductase
B. Putrescine N-methyltransferase
C. Polyphenol oxidase
D. Amylase
Answer: B. Putrescine N-methyltransferase
Rationale: This enzyme catalyzes a key step in nicotine biosynthesis.
36. The Tobacco Board headquarters is located in:
A. Guntur
B. Mysuru
C. Bengaluru
D. Rajahmundry
Answer: A. Guntur
Rationale: Guntur in Andhra Pradesh is the administrative hub.
37. Which is the main export port for Indian FCV tobacco?
A. Mumbai
B. Visakhapatnam
C. Kandla
D. Chennai
Answer: B. Visakhapatnam
Rationale: Vizag port handles bulk FCV tobacco exports.
38. Which method helps in controlling nematodes in tobacco?
A. Flooding
B. Crop rotation with marigold
C. Sprinkler irrigation
D. Excess nitrogen
Answer: B. Crop rotation with marigold
Rationale: Marigold roots release compounds toxic to nematodes.
39. Which of the following is a cigar-type tobacco?
A. Bhavya
B. Jayasri
C. Bhavapuri
D. Lanka
Answer: C. Bhavapuri
Rationale: Bhavapuri is grown for cigar wrapper leaves.
40. In flue-curing, “color fixing” occurs in which phase?
A. Yellowing
B. Color fixing
C. Leaf drying
D. Midrib drying
Answer: B. Color fixing
Rationale: Heat stabilizes the yellow color before drying proceeds.
41. Which virus causes leaf mottling in tobacco?
A. TMV
B. Cucumber mosaic virus
C. Tomato spotted wilt virus
D. All of the above
Answer: D. All of the above
Rationale: Multiple viruses can cause mottling symptoms.
42. Which plant hormone is applied for early maturity in tobacco?
A. Gibberellin
B. Ethephon
C. Auxin
D. Cytokinin
Answer: B. Ethephon
Rationale: Ethephon releases ethylene, inducing maturity.
43. Which tobacco is mainly used in bidis?
A. FCV
B. Burley
C. Country tobacco
D. Oriental
Answer: C. Country tobacco
Rationale: Strong, sun-cured country tobacco is preferred for bidis.
44. “Frogeye” in tobacco is caused by:
A. Cercospora nicotianae
B. Alternaria alternata
C. Peronospora tabacina
D. Mycosphaerella
Answer: A. Cercospora nicotianae
Rationale: Causes circular spots with light centers resembling frog eyes.
45. Which country is the largest exporter of tobacco by value?
A. USA
B. Brazil
C. China
D. India
Answer: B. Brazil
Rationale: Brazil dominates global tobacco exports.
46. Which irrigation scheduling method is best for FCV tobacco?
A. IW/CPE ratio
B. Soil moisture depletion
C. Calendar days
D. Leaf color index
Answer: A. IW/CPE ratio
Rationale: IW/CPE of 0.8–1.0 ensures optimum moisture for quality leaves.
47. “Hail injury” in tobacco affects mainly:
A. Roots
B. Leaves
C. Stems
D. Seeds
Answer: B. Leaves
Rationale: Hail tears leaf lamina, reducing market value.
48. Which chemical is used for sucker control in tobacco?
A. Maleic hydrazide
B. Glyphosate
C. 2,4-D
D. Paraquat
Answer: A. Maleic hydrazide
Rationale: MH prevents axillary bud growth after topping.
49. Which is a low-nicotine tobacco variety?
A. Abirami
B. Jayshree
C. Dharla
D. Kanchan
Answer: D. Kanchan
Rationale: Kanchan is bred for reduced nicotine content.
50. The optimal moisture content for storing cured tobacco is about:
A. 5–7%
B. 10–12%
C. 15–18%
D. 20%
Answer: B. 10–12%
Rationale: Prevents mold growth while maintaining leaf pliability.
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