616: Chemical composition of pearl is:

(a) Calcium carbonate

(b) Calcium carbonate and magnesium carbonate

(c) Calcium sulphate

(d) Calcium chloride
617: Gopal, Harsh, Inder, Jai and Krishnan have Ahmedabad, Bhopal, Cuttack, Delhi and Ernakulam as their hometowns (Not necessarily in that order). They are studying in Engineering, Medical, Commerce, Economics and History Colleges (Not necessarily in that order). None of the five boys is studying in his hometown, but each of them studies in one of the cities given above.
Further it is given that:

(i) Gopal's hometown is Ernakulam.

(ii) Harsh is not stuyding in Ahmedabad or Bhopal.

(iii) Economics College is in Bhopal.

(iv) Inder's hometown is Cuttack.

(v) Krishnan is studying in Delhi.

(vi) Jai is studying in Ernakulam and the History College is in his hometown Ahemdabad.

(vii) Engineering College is situated in Ernakulam


Which College is situated in Inder's hometown?

(A) Economics
(B) Medical
(C) Commerce or Medical
(D) Commerce
618: How do most insects respire?

(a) Through gills
(b) By tracheal system
(c) By lungs
(d) Through skin

619: To a person on the moon, the sky appears:

(a) White

(b) Black

(c) Blue

(d) Orange
620: All the six letters of the name SACHIN are arranged to from different words without repeating any letter in any one word.The words so formed are then arranged as in a dictionary. What will be the Position of the world SACHIN in that sequence?

(A) 751
(B) 601
(C) 436
(D) 590