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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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सेलिना 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 + ...................


MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Reduction is a chemical reaction in which there is

  1. removal of hydrogen
  2. removal of oxygen
  3. addition of oxygen
  4. none of these

FILL IN THE BLANK

Distillation is a method of obtaining pure ............. from a solution.


Fill in the blank:
The substances which undergo chemical change are called _______


Fill in the blank:
The substances formed as a result of a chemical reaction are called _______


Fill in the blank:

The basic conditions necessary for a chemical reaction is _______


Give an example of the following chemical change.

Two gases combine to form white solid


State the type of reactions for the following represent and balance the ones that are not balanced.

NaOH + HCl → NaCl + H2O


What is observed in performing the following :

  Hydrogen Oxygen Carbon dioxide Chlorine
Litmus test        
Apply a burning splint to the gas        
Colour of gas colourless colourless colourless greenish-yellow
Odour of gas        

What do you observe when H2S is passed through a lead nitrate solution.


Give a word equation for the following reaction.

A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.


Complete the table given below.

Heat on iodine crystals Colour of vapours evolved  

Complete the table given below.

Heat on  copper carbonate Test for gas evolved  

State whether the following reaction is oxidation or reduction.

\[\ce{Na->Na+}\]


Complete the statement by filling in the blank with the correct word:

The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.


A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?


The chemical name of baking soda is sodium bicarbonate.


Give an example where heat, light, and sound are produced during a chemical change.


Acid rain is a result of ______.


What is thermochemical reactions?


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