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प्रश्न
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Electron ______ is complete in each hydrogen in a hydrogen molecule.
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उत्तर
Electron duplet is complete in each hydrogen in a hydrogen molecule.
संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
MATCH THE COLUMNS
| 1 . `H_2` + `CI_2` `→` 2HCI | a. displacement reaction |
| 2. `2FeCI_3`+ `H_2` `→` `2FeCI_2` +2HCI` | b. addition of an electronegative redical |
| 3. Fe + `CuSO_4` `→``FeSO_4` +Cu` | c. removal of an electronegative redical |
| 4. `2H_2O` +`4NO_2`+`O_2` `→` `4HNO_3` | d.reduction by adding hydrogen |
| 5. 3Fe +`3CI_2` `→` `2FeCI_3` | e.electrolysis of water |
| 6. `FeCI_3`+ 3NaOH `→``Fe(OH)_3``↓`+NaCI | F.double decomposition,precipitation reaction |
| 7.`2H_2O` `→` `2H_2``↑`+`O_2` | e. combination or synthesis reaction |
Explain the following reaction with one suitable example of Combination reactions .
Explain the following reaction with one suitable example of Decomposition reaction
What do you observe when CO2 is passed through lime water first and then a little in excess.
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.
_____ is the basic material to manufacture urea.
State whether the following statement is true or false:
When a candle burns, both physical and chemical changes take place.
Give an example where heat, light, and sound are produced during a chemical change.
