Reaction:
The reaction in question involves the addition of cyanide (CN-) to a compound.

Different Di... morecyano Products:
The correct answer is '3'. Let's examine why.

Reasoning:
When cyanide (CN-) reacts with a compound, it can undergo three different types of reactions, leading to the formation of three different di... morecyano products.

1. Nucleophilic Addition:
In some cases, cyanide can act as a nucleophile and add to a compound. This type of reaction is known as nucleophilic addition. In this case, the cyanide would add to a carbon atom, resulting in the formation of a cyanohydrin. A cyanohydrin is a compound that contains both a hydroxyl (-OH) group and a cyanide (-CN) group bonded to the same carbon atom.

2. Substitution:
In other cases, cyanide can act as a leaving group and be substituted by another group in the compound. This type of reaction is known as substitution. In this case, the cyanide would be replaced by a different group, resulting in the formation of a di... morecyano product.

3. Isomerization:
In some cases, the addition of cyanide can lead to the rearrangement of atoms within the compound, resulting in the formation of an isomer. An isomer is a compound that has the same molecular formula but a different arrangement of atoms.

Conclusion:
In summary, when cyanide reacts with a compound, it can undergo nucleophilic addition, substitution, or isomerization reactions, leading to the formation of three different di... morecyano products. Therefore, the correct answer is '3'.