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Complete the Table Given Below. Heat On Zinc Nitrate Colour of Residue - Chemistry

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प्रश्न

Complete the table given below.

Heat on  Zinc nitrate Colour of residue  
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उत्तर

Heat on  Zinc nitrate Colour of residue yellow - hot, white - cold (ZnO Residue zinc oxide)
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पाठ 9: Practical Chemistry - Practical chemistry

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विराफ जे. दलाल Simplified ICSE Chemistry [English] Class 9
पाठ 9 Practical Chemistry
Practical chemistry | Q 4.05

संबंधित प्रश्‍न

Fill in the blank

 A catalyst either ................or ............... the rate of a chemical change but itself remains ............... at the end of the reaction.


Write the missing reactants and products and balance the equations.

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


Write the missing reactants and products and balance the equations.

\[\ce{KClO3 ->[heat]}\] ___________+ ____________


FILL IN THE BLANK

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


What do you observe when :

an iron nail is kept in tap water for few days


Name the type of chemical reaction shown by the following equation:

2Mg + O2 → 2MgO


A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.


Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.


Write the chemical reaction where the following changes are observed.

Colour change is noticed


Distinguish by heating the following in dry test tubs.

Ammonium Chloride and iodine.


Name the following:

The type of change physical or chemical involved – ‘during respiration in human beings’.


State the following reaction represent oxidation or reduction.

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


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.

Copper nitrate.


Silver metal can displace hydrogen gas from nitric acid.


Silver articles turning black: ______:: Boiling of H2O: physical change ______.


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 the following as physical or chemical properties

Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.


A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.

Write a word equation for the chemical change, if any.


Rusting of iron is  ______.


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