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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)
Oxygen is a ______ in respiration.
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उत्तर
Oxygen is a reactant in respiration.
संबंधित प्रश्न
TRUE \ FALSE
Copper can displace iron from iron sulphate.
Explain,giving one example of the following chemical changes:
Reversible reaction
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Write your observation and a balanced equation in the case of the following substances being heated.
Zinc carbonate.
Distinguish by dilute sulphuric acid.
Sodium Sulphite and sodium carbonate?
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Calcium hydroxide.
Chemical change is a temporary change.
Give an example where heat, light, and sound are produced during a chemical change.
What is thermochemical reactions?
Collect information about the types of fuels used for cooking in your area. Discuss with your teachers/parents/others which fuels are less polluting and why.
