891: Which one of the following diseases is least infectious ?
(a) Leprosy
(b) Tuberculosis
(c) Conjunctivitis
(d) Hepatitis
892: Shifting cultivators normally grow:
(a) A single crop which is mainly consumed
(b) The major crop along with cereals
(c) Cash crops along with fodder
(d) Grains, vegetables and tubers in rotation
893: Strips of two metals A and B are firmly joined together as shown in the figure.
894: Feeding of milk cattle with cotton seeds:
(a) Increases fat content temporarily
(b) Decreases fat content temporarily
(c) May decrease or increase fat content
(d) Causes no change in fat content
895: In eye donation, which one of the following parts of donor's eye is utilised ?
(a) Iris
(b) Lens
(c) Cornea
(d) Retina