Complete analogous pair - Roentgen : X-rays : : Becquerel : ?

B. RADIOACTIVITY

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 4 / 9, 9 / 20, , 39 / 86

B. 19 / 42

Choose or find odd number - 37 , 49 , 132 , 154

A. 37

Choose the correct alternative from the following : - Assertion (A) : When common salt is kept open, it absorbs moisture from the air.
Reason (R) : Common salt contains magnesium chloride.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

(A). There are five friends.
(B). They are standing in a row facing South.
(C). Jayesh is to the immediate right of Alok.
(D). Pramod is between Bhagat and Subodh.
(E). Subodh is between Jayesh and Pramod. To find answer to the above two questions, which of the given statements can be dispensed with ?

B. A ONLY