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प्रश्न
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
पर्याय
Nickel
Sodium
Iron
Iron [III] oxide
Magnesium oxide
उत्तर
Nickel
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संबंधित प्रश्न
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........................... means ‘maker of water’ in Greek.
Hydrogen gas is collected by the downward displacement of water. Give reason ?
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Starting from hydrogen gas how would you obtain a neutral liquid.
Starting from hydrogen gas how would you obtain a basic gas.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Zinc - Zn + 2HCl → ______ + _______ [g]
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
