Q.1.
A compound is a substance which contains .......
Q.2.
The number of different elements in calcium carbonate (CaCO ) is .......
Q.3.
Which of the following could have been formed by reacting iron with sulfur?
Q.4.
The formula of methane is CH . Which of these is true?
Q.5.
Which of these is NOT a compound?
Q.6.
How many atoms in the formula CuSO ?
Q.7.
The correct formula for carbon tetrachloride is .......
Q.8.
The smallest particle of carbon dioxide (CO ) that still has the properties of carbon dioxide is called .......
Q.9.
Which of these word equations is INCORRECT?
Q.10.
Which is the correct formula equation?