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प्रश्न
Write the chemical formula of the following:
magnesium oxide
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उत्तर
MgO
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संबंधित प्रश्न
Give two examples of the following:
Solid + Liquid mixture
Give the names and symbols of the first twenty elements of the periodic table.
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Aluminium
State the type of element for the following:
Antimony
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Give the formula of the following acid:
Carbonic
Name the following:
An acid whose formula is ‘H2CO3’.
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).
Sulphide
