Question 1 :
When Carbon monoxide is passed over heated copper oxide it gives :<br/>

Question 2 :
Three cations $A, B, C$ are allowed to react with ammonium hydroxide solution. $A$ and $B$ produce a dirty green precipitate and a reddish brown precipitate respectively, both of which do not dissolve on further addition of ${NH}_{4}OH$. $C$ gives pale blue colour precipitate with less amount of ammonium hydroxide and on further addition of ${NH}_{4}OH$, precipitate becomes soluble and deep blue colour solution is formed:

Question 4 :
Which of the following acts both as oxidising as well as reducing agent?

Question 5 :
Name the reducing agent in the following:<br>$3MnO_{2} + 4Al \rightarrow 3Mn + 2Al_{2}O_{3}$

Question 7 :
<span><span><span><span><span><span><span><span><span>Rusting of iron in the presence of moist oxygen is an oxidation reaction.<br/></span></span></span></span></span></span></span></span></span>

Question 13 :
Which of the following statement is correct for the oxidation reaction?

Question 14 :
Iodine is formed when KI reacts with a solution of <br>

Question 15 :
Which of the following is a non - redox process ?