The correct answer is A
Which of the following substances will turn red litmus paper blue?
Aromatic hydrocarbons contain at least how many benzene rings in their molecules?
Which dating method is commonly used to determine the age of materials from prehistoric times?
Which gas is produced due to incomplete combustion of fuel?
The chemical name of ______ is sodium hydrogen carbonate.
The insecticide gammexane is chemically known as:
What defines an ion?
Marble is a metamorphic rock of:
Which type of wave does not require a medium for propagation?
The product of the equivalent weight and valency of an element equals its ______.
