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Question
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Options
magnesium
aluminium
calcium
iron
Solution
calcium
APPEARS IN
RELATED QUESTIONS
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
MATCH THE COLUMNS
| column A | column B |
| 1. `""2H_2 + O_2 → 2H_2O` | A. This reaction is not possible |
| 2. `""H_2+CI_2 →2HCI` | B.This reaction is exothermic to the extent of explosion |
| 3.`""ZaO+ H^2→Zn +H_2O` | C.This reaction is known as Haber process |
| 4.`""Cu + H_2SO^4 → CuSO_4 + H_2 ` | D.This reaction illustrates the reducing property of bydrogen |
| 5.`""N_2 +3H_2 → 2NH_3 +heat ` | E. This reaction takes place in diffused sunlight |
| F. This reaction is a method of preparation of hydrogen |
Which test should be made before collecting hydrogen in a gas jar?
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
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.
Fe + HCl →_____________ +___________
Name an element whsich reacts violently with water at room temperature.
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen sulphide
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
