Which of the following is an endothermic reaction [EAMCET 1980; MP PMT 1980; IIT JEE 1989; JIPMER 2002]

\[2NaOH+{{H}_{2}}S{{O}_{4}}\to N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O\]

\[2{{H}_{2}}+{{O}_{2}}\to 2{{H}_{2}}O\]

\[3{{O}_{2}}+{{C}_{2}}{{H}_{5}}OH\to 2C{{O}_{2}}+3{{H}_{2}}O\]

Which of the following is an endothermic reaction [EAMCET 1980; MP PMT

1.	Which of the following is an endothermic reaction [EAMCET 1980; MP PMT 1980; IIT JEE 1989; JIPMER 2002]
A.	\[2{{H}_{2}}+{{O}_{2}}\to 2{{H}_{2}}O\]
B.	\[{{N}_{2}}+{{O}_{2}}\to 2NO\]
C.	\[2NaOH+{{H}_{2}}S{{O}_{4}}\to N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O\]
D.	\[3{{O}_{2}}+{{C}_{2}}{{H}_{5}}OH\to 2C{{O}_{2}}+3{{H}_{2}}O\]
Answer» C. \[2NaOH+{{H}_{2}}S{{O}_{4}}\to N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O\]

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