Question
In a competitive examination containing 200 questions, 2
marks are awarded for every correct answer and 1 mark gets deducted for every wrong answer. If a student attempted all questions and obtained 97 marks, how many wrong answers must he have given?Solution
Let number of questions with right answers = x ∴ No. of questions with wrong answers = 200 – x ∴ Marks obtained for right answers = 2x ∴ Marks deducted for wrong answers = 200 – x ∴ 2x - (200 – x) = 97⇒ 3x = 200 + 97 ⇒ 3x = 297 ∴ x = 99 ∴ No. of questions with wrong answers (200 – 99) = 101
Usually many field crops are propagated by seeds ,Which of the following crops is propagated vegetatively?
Colour of Bougainvillea is due to:
The genetic cause(s) of heterosis include:
Embryo transfer technology was initiated by:
Arrange these soil horizons from top to bottom.
(A) A1
(B) A2
(C) A3
(D) A0
(E) A00
Choose the correct answer from the options given below:
The first Indian Agricultural University was established in:
The groundwater table is measured by:
Glyoxylate cycle occurs in
Industrial relations consists of the relations between .....................?
The embryos of seeds contain enzymes responsible for aiding germination. During germination detection test, these enzymes gives a brilliant red stain up...
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