Latest Questions Sample Paper 2015 for (IB) Intelligence Bureau Competitive Examinations 2015 Must Prepare Now

7. The lifespan of Red Blood Cells is __________ days.
(A) 60
(B) 120
(C) 180
(D) 240

8. The density of water is
(A) 1 g/cm3
(B) 1.5 g/cm3
(C) 2 g/cm3
(D) none of these

9. Radioactivity was discovered by
(A) Kelvin
(B) Thomson
(C) Rutherford
(D) Bacquerel

10. A device which converts chemical energy into electrical energy is called
(A) motor
(B) generator
(C) moving-coil meter
(D) battery
1. The Sun is a
(A) Star
(B) Planet
(C) Asteroid
(D) Meteor