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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)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
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उत्तर
The spoiling of food is a chemical change which is recognized from the generation of certain smell due to it.
संबंधित प्रश्न
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Fill in the blank:
The substances which undergo chemical change are called _______
Define the following term:
Precipitate
Name the following:
The type of change physical or chemical involved – ‘during respiration in human beings’.
State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
State the following reaction represent oxidation or reduction.
\[\ce{Ag->Ag+}\]
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
A reaction between an acid and a base is called ______.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
Write a word equation for the chemical change, if any.
Heat may evolve or be absorbed during a ______ change.
