Which catalyst is used in the Fischer-Tropsch process to synthesize hydrocarbons or oxygenated compounds like propanone?

Buckminsterfullerene is an allotropic form of

Carbon has four electrons in its valence shell. How does carbon attain stable electronic configuration?

Write the chemical formula and draw the electron dot structure of carbon tetrachloride.

$A$ carboxylic acid (molecular formula $C_{2}H_{4}O_{2}$) reacts with an alcohol in the presence of an acid catalyst to form a compound $'X'$. The alcohol on oxidation with alkaline $KMnO_{4}$ followed by acidification gives the same carboxylic acid $C_{2}H_{4}O_{2}$. Write the name and structure of $(i)$ carboxylic acid,$(ii)$ alcohol,and $(iii)$ the compound $'X'$.

What is the solution of ethanol containing $5\%$ water called?