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प्रश्न
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
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उत्तर
| Names | Acids | ||
| (1) | Carbonic acid | (d) | H2CO3 |
| (2) | Sulphuric acid | (c) | H2SO4 |
| (3) | Hydrochloric acid | (a) | HCI |
| (4) | Nitric acid | (b) | HNO3 |
संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
State the type of element for the following:
Neon
State the type of element for the following:
Arsenic
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Write the radical of the following valency:
Oxygen
Give a reason – Magnesium [2, 8, 2] has valency 2+.
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).
Nitrate
What does the symbol '(s)' present in a chemical equation, mean?
Which letter is never used in any element symbol?
