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221.
Which of the following elements is a halogen?
222.
What is the chemical formula for carbon dioxide?
223.
Which element is used to make pencils and as a lubricant?
Explanation:
224.
What is the chemical formula for sulfuric acid?
225.
What is the chemical symbol for copper?
226.
What is the common name for the compound NaCl?
Explanation:
227.
What is the chemical formula for table sugar (sucrose)?
Explanation:
228.
Which of the following is a strong base?
229.
Which functional group is present in alcohols?
Explanation:
230.
What is the general formula for alkanes?