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प्रश्न
What is the role of a catalyst in a chemical reaction?
उत्तर
Substances used to alter the speed of a chemical reaction, are called catalysts. For example, metallic iron is used as a catalyst in the manufacture of ammonia by Haber’s process.
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संबंधित प्रश्न
Name three biochemical catalysts found in the human body.
Give a chemical test to distinguish between the following gases.
NH3 and HCl
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
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.
Ammonium dichromate.
The chemical change is ______.
Burning of paper is a ______ change.
The simplest method of preventing rusting of iron is to coat it with oil, grease, or paint. The reason being ______.
Galvanization is a process in which ______ is coated as a layer of iron.
How would you show that the settling of curd is a chemical change?
