111)the answer is apt
http://www.youtube.com/watch?v=DfPeprQ7oGc
2)i think u r also correct but the book is also correct
1. A young s double slit experiment uses a monochromatic source. The shape of the interference fringes formed on a screen............
ans given: straight line
But is it not hyperbola(the actual shape)..or else the close observence makes it a straight line.... so it is straight line......whcih is correct??
2. Conc. hydrochroic acid when kept in open air sometimes produces a cloud of white fumes. Reason:
ans given: oxygen in air reacts with the emitted HCL gas to form a cloud of cholrine gas
but y it is not, : strong affinity of HCL gas for moisture in air results in forming of droplets of liquid soln which appears like cloudy smoke
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1112 --both were given as options which is correct?? it is aieee 03 quesion...
11Yup soory 4 the above answer
the reaction will follow
4HCl +O2→2Cl2+2H2O
1but hcl will have affinit for water and it fumes... u can see it in ur pracs.....i thot it to be the affinity for water..... r sure mani