526: With reference to micro-irrigation, which of the following statements is/are correct ?
1. Fertilizer/nutrient loss can be reduced.
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of ground water table can be checked.
Select the correct answer using the codes given below:
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
527: B.R. Ambedkar was elected to the Constituent Assembly from
(a) West Bengal
(b) the Bombay Presidency
(c) the then Madhya Bharat
(d) Punjab
528: Six persons A, B, C, D, E and F are standing in a row. C and D are standing close to each other alongside E. B is standing beside A only. A is fourth from F. Who are standing on the extremes?
(A) A and F
(B) B and F
(C) B and D
(D) None of the above
529: With reference to ionic compounds, consider the following statements:
1. Ionic compounds are insoluble in alcohol.
2. Ionic compounds in the solid state are good conductors of electricity.
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
530: What is Bisphenol A (BPA) ?
(a) A medical test for detecting cancer
(b) A test for testing the use of drugs to improve performance by athletes
(c) A chemical used for the development of food-packaging materials
(d) A special type of alloy steel