Why the solid reactant is used in granul...

Why the solid reactant is used in granulated form ?

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ICSE-SPECIMEN PAPER 3-SECTION II

Explain one method of removing permanent hardness.
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Give the equation for the lab preparation of hydrogen.
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Why the solid reactant is used in granulated form ?
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How is the gas recognised ?
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Mention any two impurities present in hydrogen prepared in laboratory.
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How are these impurities removed ?
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State three precautions taken in preparing hydrogen.
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Give three main characteristics of representative elements.
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Give the physical state of the last group members of the modern period...
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Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Whi...
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Account for the following : Though lead is above hydrogen in the act...
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Account for the following : Potassium and sodium are not used to rea...
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Account for the following : Isotopes of an element possess identical...
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Distinguish by flame test : Sodium chloride and potassium chloride.
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State the effect of temperature on solubility of the following: Calc...
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State the effect of temperature on solubility of the following: Pota...
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State the effect of temperature on solubility of the following: Sodi...
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Define 'decomposition reaction'. Write an equation in each case Ther...
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Define 'decomposition reaction'. Write an equation in each case Deco...
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Elements A, B and C have atomic numbers 9, 10 and 20 respectively. Sta...
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