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प्रश्न
When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical change involved in the two cases.
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उत्तर
When hydrogen burns in oxygen, water is formed - Combination Reaction.
When electricity is passed through water, hydrogen and oxygen are given out - Decomposition Reaction.
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संबंधित प्रश्न
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Water
Write the chemical reaction where the following changes are observed.
Colour change is noticed
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper nitrate to nitrogen dioxide
State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
Chemical change is a temporary change.
Write the equation for the process of formation of rust.
______ is the chemical name of rust.
______ is the chemical name of slaked lime.
