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

Complete and Balance the Following Chemical Equations: H_2s + Ci_2→

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प्रश्न

Complete and balance the following chemical equations:

`"H"_2"S"` + `"CI"_2`  `→`  

एक पंक्ति में उत्तर
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उत्तर

`"H"_2"S"`   + `"CI"_2`  `→`  2HCI + S

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अध्याय 6: Chemical Reactions - Exercise 1 [पृष्ठ ७३]

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एस पी सिंग Concise Chemistry [English] Class 8 ICSE
अध्याय 6 Chemical Reactions
Exercise 1 | Q 6.2 | पृष्ठ ७३

संबंधित प्रश्न

Write the missing reactants and products and balance the equations.

NaOH + ............... `→` NaCI + ...................


FILL IN THE BLANK

........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.


TRUE \ FALSE

The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?


Choose the correct option from the bracket and explain the statement giving reason.

(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)

To prevent rusting, a layer of ______ metal is applied on iron sheets.


Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

Oxygen is a ______ in respiration.


Define a photochemical reaction.


Give reason for the following:

Silver nitrate solution is kept in coloured bottles.


What do you observe? When

Sodium chloride solution is added to silver nitrate solution.


Complete and balance the following reaction:

\[\ce{CuCO3 ->[\Delta]}\]


Distinguish by dilute sulphuric acid.

Copper and magnesium?


Distinguish by dilute sulphuric acid.

Sodium sulphide and sodium sulphite?


Name the following:

The products obtained during ‘photosynthesis’ – which is a chemical change.


Give a balanced equation for the conversion of an ammonium salt to a basic gas.


Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.

Zinc carbonate.


Chemical change is a temporary change.


______ change results in the change of the substance.


Write some materials prepared by chemical changes.


If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.

Do you think formation of rust from iron is a chemical change?


Is the conversion of milk into ice cream a chemical change?


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