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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)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
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उत्तर
The spoiling of food is a chemical change which is recognized from the generation of certain smell due to it.
संबंधित प्रश्न
Explain the type of reactions on the basis of the direction of reaction.
Name the type of chemical reaction shown by the following equation:
CaCO3 → CaO + CO2
A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.
Give an example of a reaction where the following are involved
Catalyst
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
Write your observation and a balanced equation in the case of the following substances being heated.
Zinc carbonate.
Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.
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 coloured substance which leaves on strong heating a black residue and evolves two colourless gases one of which is acidic and the other neutral.
The chemical change is ______.
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
