Question

carbon monoxide, a substance found in tobacco smoke, is also found in _______.
a. household cleaning products
b. vehicle exhaust
c. nail polish remover
d. paint thinner

Explanation:

To solve this, we analyze each option:

• Option A: Household cleaning products typically contain chemicals like detergents, not carbon monoxide.
• Option B: Vehicles with internal combustion engines produce carbon monoxide in their exhaust due to incomplete combustion of fuel.
• Option C: Nail polish remover usually contains acetone or similar solvents, not carbon monoxide.
• Option D: Paint thinner contains solvents like mineral spirits, not carbon monoxide.

Answer:

B. vehicle exhaust