CUET Preparation Today
Which of the following statements is NOT true about compounds? |
The composition of each new substance is always fixed. The constituents can be separated only by chemical or electrochemical reactions. Elements react to form new compounds. Compounds have a variable composition. |
Compounds have a variable composition. |
The correct answer is option 4. Compounds have a variable composition. The statement that is NOT true about compounds is Compounds have a variable composition. Compounds have a fixed composition, meaning that the ratio of elements in a compound is always the same. This is known as the law of definite proportions. Each compound has a specific chemical formula that indicates the relative number of atoms of each element present in the compound. Therefore, compounds do not have a variable composition. |
