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प्रश्न
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
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उत्तर
[g] represents gas.
संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
An atom of an element is denoted by a “symbol”. Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Hydrogen by ‘H’
Explain the terms ‘chemical formula’.
State the type of element for the following:
Radon
Write the radical of the following valency:
Zinc
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Bromide
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
What does a chemical symbol represent?
How many elements are known at present?
