Clemmenson and Pinnacole Reaction

For the reaction The correct statement regarding above reaction is

Decrease in free energy of a reacting system indicates: an exothermic reaction an endothermic reaction a spontaneous reaction a slow reaction.

If hydrogen is added in a reaction, it is called ..................... reaction.

In C_(4) plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively (a) Light reaction and dark reaction (b) Dark reaction with light reaction (c) Light reaction and photorespiration (d) Photorespiration and dark reaction

Which of the followig reaction is not a ion-exchange reaction?

Q value of a nuclear reactions is positive . The reaction is