The question is given below:
Correct answer: A. B will be a zero vector
- A. B will be a zero vector
- B. B will be a non-zero vector
- C. B and A are parallel to each other
- D. A and B are perpendicular to each other
Explanation
The following is the solution: Given that a.b = 0 Then, either |a| = 0 or |b| = 0 or a⊥b (in case a and b are non-zero) and if a×b=0 then either |a| = 0 or |b| = 0 or a || b (in case a and b are non zero). But a and b cannot be perpendicular and parallel simultaneously. Hence, |a|= 0 or |b|=0
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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