Ageing starts with disapperance of

The modern idea about ageing is that our body slowly loses the power of defence against the invasion of germs and pathogens. This proces starts by the disappearance of which organ?

In the synthesis of NH_3 , by Haber process of 60 moles of ammonia is obtained in one hour, then the rate of disapperance of nitrogen is

A + 2B rarr 3C + 2D . In this reaction the rate of disapperance of B is 1 xx 10^(-3) mol L^(-1) S^(-1) . What will be Rate of reaction.

A + 2B rarr 3C + 2D . In this reaction the rate of disapperance of B is 1 xx 10^(-3) mol L^(-1) S^(-1) . What will be Rate of change of concentration of A and C ?

For reaction 3Ato2B Rate of formation of B = 2.67mol/(litre.sec) Then rate of disapperance of A is

In the reaction BrO^(-) (aq) + 5Br^(-) (aq) + 6H^+ rarr 3Br_2(l) + 3H_2O the rate of apperance of (Br_2) is related to the rate of disapperance of Br^(-) as follows

Statement-1 : In the reaction I_(2)+SO_(2)O_(3)^(2-) rarr S_(4)O_(4)^(2-)+2I^(-) the rate of disappearance of thiosulphate ions is twice the rate of disapperance of I_(2) . Statement-2: The rate of disappearance of I_(2) is one half the rate of disapperance of S_(2)O_(3)^(2-) ions.

For a reaction 1/2 A rarr 2B , the rate of disapperance of 'A' is related to the rate of apperance of B by the expression.