2.When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to which of the following ? (A)Oxygen (B)Carbon Dioxide (C)Water Vapour (D)Hydrogen
Answer should be Carbon Dioxide am i rite or wrong.
Quicklime is Calcium Oxide (CaO), when CaO reacts with water it gives off lot of heat and it produce calcium hydroxide. So i think the answer is water vapour.
Anonymous
December 3, 2010 at 9:09 pmsir..What is LAC scheme and how it is related to promotion of exports?
Admin
December 3, 2010 at 10:01 pmFocus LAC is Focus Latin American Countries and is an export promotion scheme.
Anonymous
December 4, 2010 at 8:19 pm2.When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to which of the following ?
(A)Oxygen
(B)Carbon Dioxide
(C)Water Vapour
(D)Hydrogen
Answer should be Carbon Dioxide am i rite or wrong.
gkk
December 6, 2010 at 12:43 amQuicklime is Calcium Oxide (CaO), when CaO reacts with water it gives off lot of heat and it produce calcium hydroxide. So i think the answer is water vapour.
Anonymous
February 6, 2011 at 10:18 amsir..what is marrakech agreement?