Which one of the following is used as a food preservative?
A. Sodium benzoate
B. Sodium thiosulphate
C. Sodium hydroxide
D. Sodiian bicarbonate
Answer: Option A
A. Sodium benzoate
B. Sodium thiosulphate
C. Sodium hydroxide
D. Sodiian bicarbonate
Answer: Option A
The anti-malarial drug quinine is made from a plant. The plant is
A. Neem
B. Eucalyptus
C. Cinnamon
D. Cinchona
The causal organism of black stem rust of wheat is
A. Xanthomonas compestris
B. Pseudomonas solanacearum
C. Puccinia graminis tritici
D. Albugo candida
A. a-2, b-1, c-4, d-3
B. a-1, b-4, c-3, d-2
C. a-4, b-3, c-2, d-1
D. a-3, b-2, c-1, d-4
Which one of the following plants is used for green manuring in India?
A. Wheat
B. Sunhemp
C. Cotton
D. Rice
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