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प्रश्न
Explain the meaning of the term ‘compound’ with a suitable example.
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उत्तर
Compound: “Is a pure substance made up of two or more elements combined chemically by in a fixed proportion.”
Example: CO2 carbon dioxide is made up of two elements carbon and oxygen C,
12 parts by weight and oxygen
2 × 16 = 32 parts by weight
i.e. in ratio C : O = 12 : 16 = 3 : 4
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संबंधित प्रश्न
Match the following:
|
Compound |
Formula |
|
1. Boric acid |
i. NaOH |
|
2. Phosphoric acid |
ii. SiO2 |
|
3. Nitrous acid |
iii. Na2CO3 |
|
4. Nitric acid |
iv. KOH |
|
5. Sulphurous acid |
v. CaCO3 |
|
6. Sulphuric acid |
vi. NaHCO3 |
|
7. Hydrochloric acid |
vii. H2S |
|
8. Silica (sand) |
viii. H2O |
|
9. Caustic soda (sodium hydroxide) |
ix. PH3 |
|
10. Caustic potash (potassium hydroxide) |
x. CH4 |
|
11. Washing soda (sodium carbonate) |
xi. NH3 |
|
12. Baking soda (sodium bicarbonate) |
xii. HCl |
|
13. Lime stone. (calcium carbonate) |
xiii. H2SO3 |
|
14. Water |
xiv. HNO3 |
|
15. Hydrogen sulphide |
xv. HNO2 |
|
16. Ammonia |
xvi. H3BO3 |
|
17. Phosphine |
xvii. H3PO4 |
|
18. Methane |
xviii. H2SO4 |
Write the chemical name of the following compound
Na2SiO3
Give the name of the following compound
KCIO
Complete the following statement by selecting the correct option :
The formula of a compound represents
Give the name of the element and number of atom of those elements present in the following compound.
Quick lime
Choose the correct answer from the options given below.
The formula of iron (III) sulphate is ______.
Write the name of the following compound:
HClO
Write the name of the following compound:
HNO3
Write the name of the following compound:
HNO2
Write the name of the following compound:
Cr2(SO4)3
