The chief source of naphthalene is
A). Coal-tar
B). Diesel
C). Charcoal
D). Camphor
Coal-tar
Most naphthalene is derived from coal tar. From the 1960s until the 1990s, significant amounts of naphthalene were also produced from heavy petroleum fractions during petroleum refining, but today petroleum-derived naphthalene represents only a minor component of naphthalene production.
1. Which one of the following minerals is found in Mona2ite sand
3. Quartz is a crystalline form of
4. Hydrogen is not found In atmosphere because
5. The lightest gas which is non-inflammable is
6. Cement is formed by strongly heating a mixture of
7. Which is fight and flight organ??
8. The common name for the compound having formal NaOH is