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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Complete and Balance the Following Chemical Equations: Fe So_4 + Naoh → (Aq.) (Aq.)

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प्रश्न

Complete and balance the following chemical equations:

Fe `"SO"_4`  + NaOH  `→`

   (aq.)          (aq.)

एका वाक्यात उत्तर
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उत्तर

\[\ce{\underset{\text{(aq.)}}{FeSO4} +\underset{\text{(aq.)}}{NaOH} -> Fe(OH)2 + Na2SO4}\]

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

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सेलिना Concise Chemistry [English] Class 8 ICSE
पाठ 6 Chemical Reactions
Exercise 1 | Q 6.6 | पृष्ठ ७३

संबंधित प्रश्‍न

How would you show that setting of curd is a chemical change?


MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Reduction reaction is the exact opposite of

  1. displacement reaction
  2. decomposition reaction
  3. oxidation reaction
  4. none of these

TRUE \ FALSE

Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?


Is kerosene an electrolyte or a non-electrolyte ?


Fill in the blank

A new substance is always formed in a _______ change.


What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.


Give an example of a reaction where the following are involved

Catalyst


What do you understand by precipitation reaction? Explain with examples.


State the original colour of the following substance and colour of residue obtained after heating.

Ammonium dichromate


Distinguish by dilute sulphuric acid.

Sodium Sulphite and sodium carbonate?


Give a word equation for the following reaction.

Two solids which combine on heating, to give a liquid.


Give balanced equation for the following conversion affected by heat alone on the substance:

Copper nitrate to nitrogen dioxide


Select the correct answer from the options given below:

State the gaseous product formed, when

An active metal reacts with dilute sulphuric acid.


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

Calcium hydroxide.


The percentage composition of Nitrogen in Ureas is ______.


Two chemical species X and Y combine together to form a product P which contains both X and Y

\[\ce{X + Y -> P}\]

X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?

(i) P is a compound

(ii) X and Y are compounds

(iii) X and Y are elements

(iv) P has a fixed composition


Classify each of the following, as a physical or a chemical change. Give reasons.

(a) Drying of a shirt in the sun.

(b) Rising of hot air over a radiator.

(c) Burning of kerosene in a lantern.

(d) Change the colour of black tea by adding lemon juice to it.

(e) Churning of milk cream to get butter.


Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings


Give an example of a chemical reaction for the following situation:

A change in colour is observed


Rusting of iron is  ______.


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