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प्रश्न
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
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उत्तर
- 2Na + H2O → 2NaOH + H2
- AgNO3 + NaCl → AgCl + NaNO3
- 2KClO3 → 2KCl + 3O2
- 6CO2 + 6H2O → C6H12O6 + 6O2
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संबंधित प्रश्न
Fill in the blank.
The formation of gas bubbles in a liquid during a reaction is called ......................
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
Explain the following reaction with one suitable example of Double decomposition reaction.
What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.
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.
Explain by writing a word equation.
Respiration is a chemical change.
Give an example of a reaction where the following are involved
Heat
Give an example of a reaction where the following are involved:
Close contact
Give an example of the following chemical change.
A reaction where colour change is noticed
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
Name: Two nitrates that do not produce nitrogen dioxide on heating.
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Distinguish by heating the following in dry test tubs.
Zinc nitrate and copper nitrate.
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Explain the term chemical reaction with special reference to reactants and products.
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Classify the following as physical or chemical properties
Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
Beating an egg to make a cake is a ______.
The simplest method of preventing rusting of iron is to coat it with oil, grease, or paint. The reason being ______.
______ is the chemical name of rust.
