What is the effect of excessive consumption of alcohol along with drugs?

Which of the following is considered the most addictive drug?

Which of the following effects is $NOT$ caused by nicotine?
$(i)$ Stimulates the secretion of adrenaline. $(ii)$ Causes inflammation in the trachea. $(iii)$ Increases blood sugar levels. $(iv)$ Causes oxygen deficiency in the body. $(v)$ Stimulates the secretion of digestive juices from the stomach.

From which plant is cocaine obtained?

Nicotine intake stimulates the $...A...$ to release $...B...$ and $...C...$ into blood circulation. This leads to an increase in $...D...$ and an increase in $...E...$. Here $A$ and $E$ refer to:

From unripe opium fruit,opium is extracted. From this,which one of the following groups of narcotic drugs is also prepared?