MCQ
The organic compound used as antiknock agent in petroleum is
- ✓${({C_2}{H_5})_4}Pb$
- B$TNT$
- C$C{H_3}MgBr$
- D${({C_2}{H_5})_2}Hg$
Knocking has adverse effects. It results in early wear-and-tear of the piston. Carbon is deposited in the inner part of the cylinders [Internal Combustion Engines have cylinders, inside which pistons move]. Also, Efficiency is reduced.
So we want to reduce knocking. We add something which can reduce it. Such substances are called Anti - knockingAgents.
A popular anti-knocking agent was Tetra Ethyl Lead (TEL) $\left( C _2 H _5\right)_4 Pb$.
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$(I)\, K_4 [Fe(CN)_6]$ $(II)\, K_3[Cr(CN)_6]$ $(III)\, K_3 [Co(CN)_6]$ $(IV)\, K_2[Ni(CN)_4]$
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