Advertisements
Advertisements
प्रश्न
What does the symbol '(aq.)' present in a chemical equation, mean?
Advertisements
उत्तर
'(aq.)' represents for a solution in water (aqua).
APPEARS IN
संबंधित प्रश्न
An element which can exhibit valencies of 2, 4 and 6 can be :
Explain the terms 'valency' and 'variable valency'.
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
Give the symbol of the following element:
Boron
State the type of element for the following:
Zinc
Write the radical of the following valency:
Sodium
Write the radical of the following valency:
Potassium
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).
Chloride
What is the significance of the symbol of an element?
