Agriculture Optional Subject Solved Questions & Answers

77 At optimum level of output, the marginal return should be

1 positive

2 negative

3 equal to average return

4 zero

View Answer

Answer:zero

78 Which of the following is not a factor of production?

1 Land

2 Labour

3 Capital

4 Crop

View Answer

Answer: Crop

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79 Which one of the following is not a method of mass contact?

1 Circular letter

2 Television

3 Result demonstration

4 Leaflet

View Answer

Answer: Result demonstration

80 Wilt pathogen is mainly

1 airborne

2 seed-borne

3 waterborne

4 soil-borne

View Answer

Answer: soil-borne

81 Which of the following is organochlorine?

1 Malathion

2 Parathion

3 DDT

4 Aldicarb

View Answer

Answer:Aldicarb

82 Pedology is a study of

1 soil

2 water

3 rock

4 diseases

View Answer

Answer:soil

83 Tilt angle of disc furrow is

1 10°

2 20°

3 30°

4 40°

View Answer

Answer:20°

84 Corn stunt disease is caused by

1 spiroplasma

2 phytoplasma

3 viroid

4 virusoid

View Answer

Answer: spiroplasma

85 The length of a body tube of a compound microscope is

1 10 cm

2 16 cm

3 20 cm

4 25 cm

View Answer

Answer: 16 cm

86 Crystallization of virus was first done by

1 Adolf Mayer

2 M. W. Beijerinck

3 D. I. Ivanovsky

4 W. M. Stanley

View Answer

Answer:W. M. Stanley

91 The recommended seed rate for direct-seeded upland rice for Assam is

1 25 kg/ha

2 50 kg/ha

3 75 kg/ha

4 100 kg/ha

View Answer

Answer:75 kg/ha

92 In which of the following groups of crops, the requirement of sulphur is more?

1 Sugar crop

2 Pulses

3 Forage crop

4 Oilseeds

View Answer

Answer:Oilseeds

93 Who among the following is considered as the father of phytopathology in India?

1 M. K. Patel

2 S. P. Raychaudhuri

3 E. J. Butler

4 B. B. Mundkur

View Answer

Answer:E. J. Butler

94 The scientific journal, Phytopathology is regularly published from

1 India

2 Russia

3 China

4 USA

View Answer

Answer:USA

95 The system of rice intensification (SRI) was developed in

1 China

2 Indonesia

3 Madagascar

4 Japan

View Answer

Answer:Madagascar

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