671: Which one of the following is not an essential micronutrient for plants ?
(a) Boron
(b) Zinc
(c) Sodium
(d) Copper
672: Two men A and B have different basic salaries but get equal emoluments. Their allowances are 65% and 80% of their basic salaries respectively. The ratio of their basic salaries is:
(a) 13 : 16
(b) 8 : 9
(c) 12 : 11
(d) 80 : 65
673: Which of the following is a weedkiller?
(a) Insecticide
(b) Methyl salicylate
(c) Heribicide
(d) None of these
674: Consider the following statements :
1. If magenta and yellow coloured circles intersect, the interested are will have red colour.
2. If cyan and magenta coloured circles intersect, the interested are will have blue colour.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
675: The most reactive among the halogens is
(a) fluorine
(b) chlorine
(c) bromine
(d) iodine