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प्रश्न
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
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उत्तर
\[\ce{\underset{\text{Reactants}}{Zinc + Sulphuric acid}->\underset{\text{Products}}{Zinc Sulphate + Hydrogen}}\]
The arrow indicates the direction of the reaction
संबंधित प्रश्न
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’
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
State the type of element for the following:
Fluorine
Write the radical of the following valency:
Nitrate
Write the chemical formula of the following:
magnesium oxide
Give the formula of the following acid:
Hydrochloric
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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).
Nitride
