The contrapositive of the statement "If I reach the station in time, then I will catch the train' is:
Option: 1 If I do not reach the station in right time,
then I will catch the train.
Option: 2 If I do not reach the station in right time,
then I will not catch the train.
Option: 3 If I will catch the train, then I reach the station in time.
Option: 4 If I will not catch the train, then I do not reach the station in time.
5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K
A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d