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What kind of a change is associated with decaying of a plants? - Science

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प्रश्न

What kind of a change is associated with decaying of a plants?

एका वाक्यात उत्तर

उत्तर

Decaying plants is associated with slow change and chemical change.

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पाठ 3: Changes Around Us - Evaluation [पृष्ठ ४०]

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सामाचीर कलवी Science - Term 2 [English] Class 6 TN Board
पाठ 3 Changes Around Us
Evaluation | Q VI. 1. | पृष्ठ ४०

संबंधित प्रश्‍न

Give reason .

A person suffering from acidity is advised to take an antacid.


Write true or false  :
No new substance is formed during a chemical reaction.


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)

The white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.


Give an example of a reaction where the following are involved:

Close contact


What do you observe? When

Sodium chloride solution is added to silver nitrate solution.


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        

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

Ammonium dichromate


What do you observe when Cobalt chloride paper is introduced in water vapour.


Give a chemical test to distinguish between the following gases. 

HCl and Cl2


What do you observe when dilute sulphuric acid is added to the following:

Sodium Sulphide


Complete the table given below.

Heat on  Zinc nitrate Colour of residue  

Match the chemical reactions in List I with the appropriate answer in List II.

  List I   List II
1. \[\ce{XY⇌[heat]X + Y}\] A: Displacement reaction
2. \[\ce{XY->X + Y}\] B: Double decomposition
3. \[\ce{X+Y- + A+B^-->X+B- + A+Y-}\] C: Endothermic reaction
4. \[\ce{X + YZ->XZ + Y}\] D: Thermal dissociation
5. \[\ce{X + Y->[heat]XY -\Delta}\] E: Decomposition reaction

State the following reaction represent oxidation or reduction.

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


Chemical change is a temporary change.


Iron and rust are the same substances.


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


Write five changes in the characteristics of a substance that can take place during a chemical change. 


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