I need help with this question. Instruction : Answer the following questions using the given options.

Questions :
1. The reaction between an acid and a base is an example of ___ reaction ?

a. Valence
b. Endothermic reaction
c. Chemical reaction
d. Exothermic reaction

2.The following are the factors affecting the rate of a chemical reaction except ___
a. catalyst
b. nature of reactants
c. activation energy
d. lights

3.___ gives a dense white fume when in contact with HCL
a. propane
b. ammonia
c. tetraoxosulphate(vi) acid d. water​