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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
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
What are biocatalysts ?
Write a short note on the information derived from a balanced chemical equation.
Fill in the blank
A new substance is always formed in a _______ change.
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)
A colourless solution of calcium hydroxide in a test tube turns ______ on blowing in it through a blow tube for some time.
State the conditions necessary for a chemical change or reaction.
Give an example of the following chemical change.
Two solids combine to form a liquid
Complete and balance the following reaction:
NaCl(aq) + AgNO3(aq) →
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
