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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)
Oxygen is a ______ in respiration.
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उत्तर
Oxygen is a reactant in respiration.
संबंधित प्रश्न
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Match the column in the following table.
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | H2CO3(aq) | Displacement |
| 2AgCl(s) | FeSO4(aq) + Cu(s) | Combination |
| CuSO4(aq) + Fe(s) | BaSO4↓ + ZnCl2(aq) | Decomposition |
| H2O(l) + CO2(g) | 2Ag(s) + Cl2(g) | Double displacement |
Give an example of the following chemical change.
Two solids combine to form a liquid
Give reason for the following:
Silver nitrate solution is kept in coloured bottles.
What do you observe? When
Water is added to the quick lime.
Name: Two carbonates do not produce carbon dioxide on heating.
Give balanced equation for the following conversion affected by heat alone on the substance:
Ammonium dichromate to nitrogen
What kind of a change is associated with decaying of a plants?
Burning of paper is the best example of ______ change.
Which of the following statement is incorrect for a chemical reaction?
