Which of the following are opioid drugs?

Which of the following substances is commonly known as a sleeping pill?

Morphine is obtained from the

Which of the following is $NOT$ an effect of cocaine?

Which of the following statements is incorrect regarding adolescence?

Nayan's friend is consuming drugs. What should Nayan do?
$(i)$ Discuss with the friend's parents. $(ii)$ Bring the matter to the attention of the friend's teacher. $(iii)$ Advise him to stay away from alcohol and drugs. $(iv)$ Try to understand why he is consuming drugs and show empathy. $(v)$ Inform him about the physical harm caused by addiction. $(vi)$ Provide proper guidance and help him stay away from addiction.