Questions

What is the valency of magnesium?

The instrument used to examine a person's digestive tract is called ___.

In the following figure, rectangle represents brand managers, circle represents cartoonist, triangle represents sculptors and square represents fathers. Which set of letters represents fathers who are either brand managers or cartoonists?

In each of the following questions, a question is followed by information given in three statements. You have to decide the information given in which of the statements
is necessary and sufficient to answer the questions:

A, B, C, D and E are sitting in a circle. Are all of them facing the centre?

I. A is sitting second to the right of D; C is facing the centre and is not an immediate neighbour of D.
II. B, who is sitting between C and D, is second to the right of E, who is not an immediate neighbour of C. B and A are facing each other.
III. D is sitting on the immediate left of B, who is not sitting on the immediate left of A. E is on the immediate right of D.

ΔPQR is right angled at Q. If m∠R = 60o, then find the value of (secP - 1/√3) 

S. Balachander is associated to which musical instrument?

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

It is a colourful event and everyone (have) a great time.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

The rejection of all religious and moral principles, in the belief that life is meaningless