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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Multiple Choice Question Water Gas is a Mixture of Carbon Monoxide and Oxygen Carbon Monoxide and Hydrogen Hydrogen and Oxygen Hydrogen and Nitrogen. - Chemistry

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प्रश्न

Multiple Choice Question

Water gas is a mixture of

विकल्प

  • carbon monoxide and oxygen

  • carbon monoxide and hydrogen

  • hydrogen and oxygen

  • hydrogen and nitrogen.

MCQ

उत्तर

carbon monoxide and hydrogen

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Preparation of Hydrogen
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Hydrogen - Exercise [पृष्ठ ९९]

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सेलिना Concise Chemistry [English] Class 8 ICSE
अध्याय 7 Hydrogen
Exercise | Q 13.6 | पृष्ठ ९९

संबंधित प्रश्न

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

 


Give reason for the following:

Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.


Complete and balance the following reaction.

Zn + HCl →_____________ +___________


Select the correct options for the following statement:

The metal which reacts with steam liberating hydrogen & the reaction is reversible.


Complete and balance the equation:

[General method]

Reactions of metals with steam

Aluminium - 2Al + 3H2O → ______+ _______ [g]


Complete and balance the equation:

[General method]

Reactions of metals with dilute acids

Zinc - Zn + 2HCl → ______ + _______ [g]


Account for the following fact:

Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.


State the reactant added to hydrogen to obtain the respective product in following case.

Hydrogen chloride


Give a balanced equation for the following conversion.

\[\ce{KAlO2<-KOH->K2ZnO2}\]


Give a balanced equation for the following conversion.

\[\ce{CO + H2<-H2O->CO2 + H}\]


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