हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Indicate which of the following statement is true and which is false: Nitric acid cannot be used to prepare hydrogen by its action on active metals. - Chemistry

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प्रश्न

Indicate which of the following statement is true and which is false:

Nitric acid cannot be used to prepare hydrogen by its action on active metals.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य

उत्तर

This statement is True.

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Laboratory Preparation of Hydrogen
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Hydrogen - Exercise [पृष्ठ ९८]

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सेलिना Concise Chemistry [English] Class 8 ICSE
अध्याय 7 Hydrogen
Exercise | Q 2.3 | पृष्ठ ९८

संबंधित प्रश्न

FILL IN THE BLANK

Sodium liberates hydrogen when treated with cold .............


Under what conditions can hydrogen be made to combine with chlorine?

Name the products and write the equation for the reaction.


Starting from zinc how would you obtain hydrogen using Steam.
[Give balanced equation & name the product formed in the case other than hydrogen].
Name a metal which will not react with the reactants above to give hydrogen.


In the laboratory preparation of hydrogen from zinc & dilute hydrocholoric acid – state a reason for the addition of traces of copper [II] sulphate to the reaction medium.


Give a balanced equation for the following conversions sodium plumbite from lead.


In the laboratory preparation of hydrogen from zinc and dil. acid. Give a reason for the following:

The complete apparatus is air-tight.


In the laboratory preparation of hydrogen from zinc and dil. acid. Give a reason for the following:

Hydrogen is not collected over air.


The diagram represent the preparation and collection of hydrogen by a standard

laboratory method.


State what is added through the thistle funnel ‘Y’


The diagram represent the preparation and collection of hydrogen by a standard laboratory method.


State what difference will be seen if pure zinc is added in the distillation flask ‘X’ instead of granulated zinc.


The diagram represent the preparation and collection of hydrogen by a standard laboratory method.


State, why hydrogen is collected after all the air in the apparatus, is allowed to escape.


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