1
IIT-JEE 1991
Subjective
+1
-0

Write the IUPAC name for the following :

IIT-JEE 1991 Chemistry - Basics of Organic Chemistry Question 13 English
2
IIT-JEE 1991
Subjective
+4
-0
In a test an examine either guesses or copies or knows the answer to a multiple choice question with four choices. The probability that he make a guess is $$1/3$$ and the probability that he copies the answer is $$1/6$$. The probability that his answer is correct given that he copied it, is $$1/8$$. Find the probability that he knew the answer to the questions given that he correctly answered it.
3
IIT-JEE 1991
Fill in the Blanks
+2
-0
Given that $$\overrightarrow a = \left( {1,1,1} \right),\,\,\overrightarrow c = \left( {0,1, - 1} \right),\,\overrightarrow a .\overrightarrow b = 3$$ and $$\overrightarrow a \times \overrightarrow b = \overrightarrow c ,$$ then $$\overrightarrow b \, = $$.........
4
IIT-JEE 1991
Subjective
+4
-0
Determine the value of $$'c'$$ so that for all real $$x,$$ the vector
$$cx\widehat i - 6\widehat j - 3\widehat k$$ and $$x\widehat i + 2\widehat j + 2cx\widehat k$$ make an obtuse angle with each other.
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