# Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 April 2014)

### done JEE Main Paper (Held On 19 April 2014)

• question_answer1) Consider the reaction: ${{H}_{2}}S{{O}_{3}}(aq)+S{{n}^{4+}}(aq)+{{H}_{2}}O(l)$ $\to S{{n}^{2+}}(aq)+HSO_{4}^{-}(aq)+3{{H}^{+}}(aq)$ Which of the following statements is correct?     JEE Main Online Paper (Held On 19 April 2016)

A) $S{{n}^{4+}}$is the oxidizing agent because it undergoes oxidation

B) $S{{n}^{4+}}$is the reducing agent because it undergoes oxidation

C) ${{H}_{2}}S{{O}_{3}}$is the reducing agent because it undergoes oxidation

D) ${{H}_{2}}S{{O}_{3}}$is the reducing agent because it undergoes reduction

• question_answer2) How many electrons are involved in the following redox reaction? $C{{r}_{2}}O_{7}^{2-}+F{{e}^{2+}}+{{C}_{2}}O_{4}^{2-}$$\to C{{r}^{3+}}+F{{e}^{3+}}+C{{O}_{2}}$(Unbalanced)     JEE Main Online Paper (Held On 19 April 2016)

A) 3

B) 4

C) 6

D) 5

• question_answer3) Amongst the following, identify the species with an atom in + 6 oxidation state:     JEE Main Online Paper (Held On 19 April 2016)

A) ${{[Mn{{O}_{4}}]}^{-}}$

B) ${{[Cr{{(CN)}_{6}}]}^{3-}}$

C) $C{{r}_{2}}{{O}_{3}}$

D) $Cr{{O}_{2}}C{{l}_{2}}$