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प्रश्न
Differentiate between in Chemical reaction and chemical equation.
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उत्तर
| Chemical reaction | Chemical Equation |
| Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction. | A chemical equation is the symbolic representation of a chemical reaction using the symbols and the formula of the substances involved in the reaction. |
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संबंधित प्रश्न
How would you show that setting of curd is a chemical change?
Complete and balance the following chemical equations:
N2 + O2 →
FILL IN THE BLANK
The new substances formed during a chemical reaction are called the ..................
Balancing a chemical equation is based on
Explain the following reaction with one suitable example of Decomposition reaction
Explain the following reaction with one suitable example of Double decomposition 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.
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)
Oxygen is a ______ in respiration.
State the conditions necessary for a chemical change or reaction.
Complete and balance the following reaction:
Pb(NO3)2 + KI →
Complete and balance the following reaction:
\[\ce{CuCO3 ->[\Delta]}\]
What is a chemical reaction?
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Addition of dilute hydrochloric acid to silver nitrate.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc nitrate to nitrogen dioxide
Explain the following statement: Digestion is a chemical change.
Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
Is the conversion of milk into ice cream a chemical change?
______ is a chemical substance is used in whitewashing.
What is the difference between reactants and products?
