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Posted by Sayyaparaju Sahithi 4 years, 9 months ago (10466500)
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Sia ? 4 years, 9 months ago (6945213)
x = y = z = 0
x = float( input("Enter the first number:"))
y = float(input("Enter the second digit number:"))
z = float (input("Enter the third number:"))
max = x
if y > max:
max = y
print("Largest number is",max)
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Sia ? 4 years, 9 months ago (6945213)
In order to have the election process more democratic there are few pre-requisites like:
- One vote, one value: To choose/elect the representative everyone must have one note with equal value. This is to avoid any type of conflicting situation.
- Regular Election: There should be regular elections in every democratic country so that people have their choice at regular intervals.
- Free and Fair Election: In order to ensure a fair chance to the people there should be a free and fair election in every democratic country.
- Political competition: In order to have democratic election parties, candidates should be free to contest elections and should offer some real choice to the voters.
Posted by B. Adhithya 4 years, 9 months ago (9876669)
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Posted by Mercy Hawkips 4 years, 9 months ago (9246954)
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Sia ? 4 years, 9 months ago (6945213)
Explanation:
Experiment to prepare crystals of pure Copper Sulfate ( ) from a given impure sample of the blue vitriol is as follows -
Theory -
- Sample + water + few drops of dilute sulfuric acid ( to prevent hydrolysis of copper sulfate).
- Copper sulfate is dissolved and the insoluble impurities are left over.
- The solution is filtered out. The filtrate is concentrated up to the crystallization point and then cooled.
- After cooling, crystals of copper sulfate (
) is filtered out.
Requirements - Copper sulfate sample, a beaker, a china dish, a funnel, test tube, a glass rod, an evaporating dish and a policeman
Procedure - Preparation of Solution
- Take about 25-30 ml of water + pinch of the powdered crude copper sulfate. Stirring the solution and repeating the same additions and stirring until some of it remains undissolved + 2-3 ml of dilute sulfuric acid (making the solution clear that prevents hydrolysis of the copper sulfate)
Formation of crystals
- The solution is filtered out. The filtrate (left in a china dish) is concentrated up to the crystallization point and then cooled. Heating the solution till it is reduced to about one-third of its original volume. Stir it to avoid the crust formation
- The formation of a crust or tiny crystals on the glass rod indicates the crystallization point. Now stop heating.Transferring and cooling the hot saturated solution in the crystallizing dish. On cooling it we will get deep blue crystals of copper sulfate
Separation of Crystals and Drying
- Decant + Wash the crystals with a little ethyl alcohol + water
- Filtered on filter paper
Conclusion - The crystals of pure blue color copper sulfate (
) are obtained that are transparent.
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Reema Panda 4 years, 9 months ago (10868561)
3 Thank You