The rate of a reaction doubles when its temperature changes from 300 K to 310 K. Activation energy of such a reaction will be: (R = 8.314 J{tex}K^{-1} mol^{-1}{/tex} and log2 = 0.301)
Sulphur trioxide can be obtained by which of the following reaction.
No of {tex}H_2O{/tex} molecules in a drop of water weighing 0.05g is:
Auto reduction is employed in the metallurgy of :
If α, β, γ are the angles made by a straight line with the coordinate axes, then sin2α+sin2β+sin2γ is
The sequence of ionic mobility in aqueous solution is
The name of the compound in figure is
a, b, c (all positive) are the pth, qth, and rth terms of a geometric progression then
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 ?
A spring of force constant k is cut into two pieces such that one piece is double the length of the other. The force constant of the longer piece will be
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