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प्रश्न
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
उत्तर
| Heat on sodium chloride | Colour imparted to flame during flame test | Colour of flame is golden yellow |
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Which one of the following alters the rate of the chemical reaction without itself undergoing any change?
- temperature and Pressure
- concentration of reactants
- presence of catalyst
- none of these
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
What are homogenous reactions ?
Write true or false.
A chemical equation gives only qualitative information of a chemical reaction.
Balancing a chemical equation is based on
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.
Give an example of a reaction where the following are involved
Electricity
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper carbonate to copper oxide
Complete the table given below.
| Heat on ammonium dichromate | Name of neutral gas evolved |
State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
NPK are the primary nutrients for plants.
Silver metal can displace hydrogen gas from nitric acid.
Write some materials prepared by chemical changes.
Why is spoiling food a chemical change?
______ is the chemical name of limestone.
