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प्रश्न
Name: Two carbonates do not produce carbon dioxide on heating.
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उत्तर
Na2CO3 and K2CO3
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
Fill in the blank:
The substances which undergo chemical change are called _______
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
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 white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.
Explain by writing a word equation.
Hard water gets softened on mixing with a solution of washing soda.
Multiple choice:
Thermal decomposition of sodium carbonate will produce
What do you observe? When
Sodium chloride solution is added to silver nitrate solution.
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
A chemical change may involve –
The simplest method of preventing rusting of iron is to coat it with oil, grease, or paint. The reason being ______.
