The angle of minimum deviation in an equilateral prism of refractive index 1.414 is
The rate of a First order reaction 0.04 {tex}mol^{-1} S^{-1}{/tex} at 10 seconds 0.03 {tex}mol^{-1} s^{-1}{/tex} at 20 seconds after intiation of reaction. The half life period of the reaction is
The coherent sources whose intensity ratio is 81:1 produce interference fringes. The ratio of minimum to maximum intensity i.e. Imin:Imax is
Which of the following will not produce ethane?
Which of the following has maximum number of lone pairs associated with Xe?
A weak acid HX has {tex}K_a = 1 \times 10^-5 M{/tex}. It forms a salt NaX on reaction with alkali. The percentage degree of dissociation of 0.1 M solution of NaX is
1.00E-5
0.01
0.1
0.15
Given the polymers ; A = Nylon ; B = Buna - S;C = Polythene. Arrange these in increasing order of their intermolecular force (lower to higher)
If vectors a, b, c are non zero, non coplanar vectors, then (c x a) x (a x b) is
A solution of urea (mol. Mass 60g {tex}mol^{-1}{/tex}) boils at {tex}100.18^\circ{/tex} C at the atmospheric pressure. If {tex}K_f{/tex} and {tex}K_b{/tex} for water are 1.86 and 0.512 K kg {tex}mol^{-1}{/tex} respectively, the above solution will freeze at
On a humid day in summer, the mole fraction of gaseous H2O (water vapour ) in the air at 25° C can be as high as 0.0287. Assuming the total pressure of 0.977 atm, what is the partial pressure of dry air ?
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