651: In the year 2001, NASA launched a spacecraft to Mars named

(a) Mars Climate Orbiter
(b) Mars Global Surveyor
(c) Mars Odyssey
(d) Mars Polar Ladder
652: Who of the following is the author of the book "The Audacity of Hope"?

(a) Bill Clinton
(b) Al Gore
(c) Barack Obama
(d) Hillary Clinton
653: Deficit financing means

(a) An excess of government's current expenditure over its current revenue

(b) An excess of government expenditures minus borrowings other than those from the RBI

(c) An excess of government's total expenditure over its total revenue

(d) An excess of government revenue over expenditure
654: The Harappans did not know the use of

(a) Bronze

(b) Gold

(c) Iron

(d) Silver
655: Vinegar is an aqueous solution of

(a) oxalic acid

(b) citric acid

(c) acetic acid

(d) hydrochloric acid