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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)
Rusting of iron is a ______ chemical change.
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उत्तर
Rusting of iron is a slow chemical change.
संबंधित प्रश्न
Complete and balance the following chemical equations
Na + H2 O →
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
Define a photochemical reaction.
Explain,giving one example of the following chemical changes:
Reversible reaction
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
Mention the various conditions required for a chemical reaction to occur.
What is the use of indicator?
______ is a natural indicator.
Which of the following are chemical changes?
(i) Decaying of wood
(ii) Burning of wood
(iii) Sawing of wood
(iv) Hammering of a nail into a piece of wood
The simplest method of preventing rusting of iron is to coat it with oil, grease, or paint. The reason being ______.
