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प्रश्न
Complete the statement by filling in the blank with the correct word:
The element molybdenum used in the reaction of nitrogen with hydrogen at elevated temperatures is an example of a ________.
पर्याय
promoter
catalyst
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उत्तर
The element molybdenum used in the reaction of nitrogen with hydrogen at elevated temperatures is an example of a promoter.
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संबंधित प्रश्न
Define exothermic reactions. Give two examples of each.
State the effect of an exothermic reaction on the surroundings.
What do you observe? When
Lead nitrate is heated.
State the following reaction whether heat is evolved or absorbed –
water is added to quicklime
Give an example of an endothermic reaction.
Give an example with a balanced equation, of the following reaction:
exothermic reaction
Complete the statement by filling in the blank with the correct word:
The reaction of hydrogen burning in oxygen to give a neutral liquid is an example of ________ reaction.
Classify the following reaction into Exothermic and Endothermic reactions.
Magnesium ribbon when burned in air, it forms magnesium oxide.
Give scientific reasons.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give a scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
