Question
Chronological development in commercial use of herbicide
is A. Triazines B. Phenoxyalkanoic acids C. Dinitroanilines D. Sulfonylureas E. Phenoxy (aryloxy) propionates Choose the correct answer from the options given belowSolution
Chronological development of herbicides is as follows Phenoxyalkanoic acid (2,4-D) fb Dinitroanilines fb Triazines (Atrazine, simazine) fb phenoxy (aryloxy) propionates fb Sulfonylurea
Solve the quadratic equations and determine the relation between x and y:
Equation 1: x² - 5x + 6 = 0
Equation 2: y² - 7y + 12 = 0
I. Â 3y2Â + 13y - 16 = 0
II. 3x2 – 13x + 14 = 0
If x and y satisfy x² + y² = 25 and x + y = 7, find xy.
Roots of the quadratic equation 2x2 + x – 528 = 0 is
I. 3p² - 17p + 22 = 0
II. 5q² - 21q + 22 = 0
The quadratic equation (p + 1)x 2 - 8(p + 1)x + 8(p + 16) = 0 (where p ≠-1) has equal roots. find the value of p.
I. 64x2 - 64x + 15 Â = 0 Â Â Â Â
II. 21y2 - 13y + 2Â =0
I. 3y2 + 16y + 16 = 0
II. 2x2 + 19x + 45 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 21x² - 82x + 80 = 0
Equation 2: 23y² - 132y + 85 = 0
I. x2 + 11x + 30 = 0
II. y2 + 17y + 72 = 0
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