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प्रश्न
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
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उत्तर
| Gases | Names | |
| (a) | H2 | (4) Hydrogen |
| (b) | N2 | (5) Nitrogen |
| (c) | O2 | (3) Oxygen |
| (d) | Cl2 | (6) Chlorine |
| (e) | HCI | (11) Hydrogen Chloride |
| (f) | NH3 | (1) Ammonia |
| (g) | CO | (7) Carbon Monoxide |
| (h) | CO2 | (10) Carbon Dioxide |
| (i) | SO2 | (8) Sulphur Dioxide |
| (j) | NO | (9) Nitrogen Monoxide |
| (k) | NO2 | (2) Nitrogen Dioxide |
संबंधित प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
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 |
Write the radical of the following valency:
Sulphate
Write the radical of the following valency:
Carbonate
State the valency of the following metallic element and write symbol with the valency
Calcium
State the valency of the following metallic element and write symbol with the valency
Zinc
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).
Bromide
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).
Plumbite
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
