2901: Which one of the following Union Ministries implements the Cartagena Protocol on Biosafety?
(a) Ministries of Health and Family Welfare
(b) Ministries of science and technology
(c) Ministry of Environment and Forests
(d) Ministry of Chemicals and Fertilizers
2902: Consider the following:
Carbon monoxide
Methane
Ozone
Sulphur dioxide
Which of the above are released into atmosphere due to the burning of crop/biomass residue?
(a) 1 and 2 only
(b) 2, 3 and 4 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
2903: Assertion (A) :
In a motion picture, usually 24 frames are projected every second over the whole length of the film.
Reason (R) :
An image formed on the retina of eye persists for about 0.1 s after the removal of stimulus.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
2904: Which one of the following laser types is used in a laser printer ?
(a) Dye laser
(b) Gas laser
(c) Excimer laser
(d) Semiconductor laser
2905: The Harappans did not know the use of
(a) Bronze
(b) Gold
(c) Iron
(d) Silver