
The reaction shown in the question is a Wurtz-Fittig reaction. This reaction involves the reaction of an alkyl halide (R-X) with sodium in dry ether, leading to the formation of an alkane (X) or an alkylated product (Y). It is a combination of the Wurtz reaction (for alkyl halide formation) and the Fittig reaction (for aryl halide formation).
The Wurtz-Fittig reaction is a combination of both reactions and is used to form aryl and alkyl products.
Which of the following are present in DNA? 
At STP \(x\) g of a metal hydrogen carbonate (MHCO$_3$) (molar mass \(84 \, {g/mol}\)) on heating gives CO$_2$, which can completely react with \(0.02 \, {moles}\) of MOH (molar mass \(40 \, {g/mol}\)) to give MHCO$_3$. The value of \(x\) is:

