806: In which one of the following oceans is Diamantina Trench situated ?

(a) Indian Ocean
(b) Atlantic Ocean
(c) Arctic Ocean
(d) Pacific Ocean
807: Chemical composition of pearl is:

(a) Calcium carbonate

(b) Calcium carbonate and magnesium carbonate

(c) Calcium sulphate

(d) Calcium chloride
808: Who among the following Bhakti leaders used the medium of dance and songs (Kirtans) to make one feel the personal presence of god near him?

(a) Shankaradeva

(b) Chandidasa

(c) Jnanadeva

(d) Chaitanya Mahaprabhu
809: Zero was invented by

(a) Aryabhata

(b) Varahamihira

(c) Bhaskara I

(d) an unknown Indian
810: Consider the following statements regarding the High Courts in India :

I. There are eighteen High Courts in the country.
II. Three of them have jurisdiction over more than one State.
III. No Union Territory has a High Court of its own.
IV. Judges of the High Court hold office till the age of 62.

Which of these statements is/are correct ?

(a) I, II and IV
(b) II and IV
(c) I and IV
(d) IV only