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प्रश्न
Give the formula of the following acid:
Hydrochloric
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उत्तर
Hydrochloric – HCI
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संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
Explain the terms 'valency' and 'variable valency'.
Match the formulas of the following gases with their correct names :
Gases - (a) H2 (b) N2 (c) O2 (d) Cl2 (e) HCI (f) NH3 (g) CO (h) CO2 (i) SO2 (j) NO (k) NO2.
Names:
(1) Ammonia (2) Nitrogen Dioxide (3) Oxygen (4) Hydrogen (5) Nitrogen (6) Chlorine (7) Carbon Monoxide (8) Sulphur Dioxide (9) Nitrogen Monoxide (10) Carbon Dioxide (11) Hydrogen Chloride
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:
Lead
Write the chemical formula of the following:
zinc oxide
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
What is the significance of the symbol of an element?
