Question: Where do the female mango leaf hoppers lay their eggs?
1. Inside the tissue of leaf margin
2. On the dorsal surface of leaves
3. On the ventral surface of leaves
4. Inside the mid-rib of leaves
Answer: 3
Question: In H.T.S.T. pasteurization, which one of the following organisms is chosen as index organism for killing?
1. S.thermophilus
2. S.lactis
3. B.subtilis
4. M.tuberculosis
Answer: 1
Question: Thermophilic micro-organism grow well at temperature–
1. 10°C – 20°C
2. 20°C – 40°C
3. 50°C – 60°C
4. 5°C – 7°C
Answer: 3
Question: Pink bollworm is a pest of –
1. Gram
2. Okra
3. Mustard
4. Cotton
Answer: 4
Question: The croppping intensity of maize-potato-tobacco is –
1. 200%
2. 300%
3. 100%
4. None of these
Answer: 2
Question: National Sugar Institute (N.S.I.) is located at–
1. Kanpur
2. New Delhi
3. Varanasi
4. Lucknow
Answer: 1
Question: Khaira disease of rice can be controlled by spraying –
1. Copper sulphate
2. Calcium sulphate
3. Zinc sulphate
4. Borax
Answer: 3
Question: Which one of the following can be suitable for cropping as a wheat mixed crop?
1. Cabbage
2. Cotton
3. Mustard
4. Jowar
Answer: 3
Question: The optimum cardinal temparature point for germination of rice seeds is–
1. 20°C – 25°C
2. 18°C – 22°C
3. 30°C – 32°C
4. 37°C – 39°C
Answer: 1
Question: What culture should be given priority in groundnut cultivation?
1. Mycorrhiza
2. Rhizobium
3. Phosphobacteria
4. Azospirillum
Answer: 3
Question: Damping-off disease of vegetable nursery can be controlled by-
1. Solarization
2. Mixing of fungicides in soil
3. Seed treatment
4. All of these
Answer: 4
Question: Guttation occurs in plants through –
1. Stomata
2. Hydathodes
3. None of these
4. Both (A) and (B)
Answer: 4
