The correct answer is B. 1 and 3.

Statement 1 is correct. Dynamite is prepared by mixing nitroglycerine with sawdust and ammonium nitrate.

Statement 2 is incorrect. Liquor poisoning is due to the presence of methanol, not ethanol.

Statement 3 is correct. Ethanol is generally present in tonics.

Here are some additional details about each statement:

  • Dynamite is a high explosive that is made by mixing nitroglycerine with sawdust and ammonium nitrate. Nitroglycerine is a very unstable substance that can explode if it is not handled properly. Sawdust and ammonium nitrate are added to nitroglycerine to make it less likely to explode.
  • Liquor poisoning is a condition that can occur when someone drinks too much alcohol. Alcohol is a depressant that can slow down the central nervous system. If someone drinks too much alcohol, they can become unconscious or even die.
  • Ethanol is a type of alcohol that is found in alcoholic beverages. It is also used in many other products, such as gasoline and solvents. Ethanol is a depressant that can slow down the central nervous system.