Identify the type of chemical reaction and also write the chemical equation for the reaction that takes place when a solution of potassium chloride is mixed with silver nitrate solution. Write the chemical name of one of the products obtained.
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Assertion (A): In the reaction between potassium permanganate and potassium iodide, permanganate ions act as oxidizing agent
(c)A is true but R is False
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On heating, potassium chlorate decomposes to potassium chloride and oxygen. In one experiment 30g of potassium chlorate generates 14.9g
(a) 2KCIO3→2KCI + 3O2 30g 14.9g 9.6g Suppose mass of under composed KCIO3 = xg According to law of conservation of mass the total mass...
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Identify the type of each of the following reactions. Also write balanced chemical equation for each.
(i) Exothermic Reaction CaO + H2O → Ca(OH)2 (ii) Double displacement reaction. BaCl2+Na2SO4 → BaSO4+2NaCl
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Define a chemical reaction. State four observations which help us to determine that a chemical reaction has taken place.
Process in which new substances with new properties are formed by the rearrangement of atoms is known as a chemical reaction. (i) Evolution of gas: The chemical reaction between zinc and dilute H2SO4. Zn(s)+H2SO4(aq) → ZnSO4(sq) +H2(g)↑ (ii) Change in...
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Write the balanced chemical equation for the following reaction and identify the type of reaction and define it
Fe2O3+2Al → Al2O3+2Fe. Displacement reaction is the reaction in which one element displaces another element.
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Write balanced equation for the following reactions and also name the type of chemical reaction in each case :
(i) ZMg+ O2 → 2MgO MgO + H2O → Mg(OH)2 Oxidation reaction/Combination reaction (ii) CaCO3(s)→ CaO(s) + CO2(g) CaCO3(s)-(Lime stone) CaO(s) -(quick lime) Decomposition reaction
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Write the chemical formula of baking soda. How is baking soda prepared ? Write the reaction which takes place when it is heated during cooking.
The chemical formula of baking soda is NaHCO3. It is prepared by using sodium chloride. NaCl + H2O + CO2 + NH3 → NH4CI + NaHCO3. On heating : 2NaHCO3+ Heat → Na2CO3 + H2O + CO2
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What type of reaction takes place between CH3COOH and NaOH solution ? Where do you find the use of ethanoic acid in day to day food products ?
Neutralization reaction. It is used in the form of vinegar, which is a dilute a solution of ethanoic acid in water.
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A beaker contains a solution of substance ‘A’. Precipitation of substance ‘A’ takes place when small amount of ‘A’ is added to the solution.
(ii), [Hint: If added substance dissolves, the solution is unsaturated. If it does not dissolve solution is saturated. If precipitation occurs solution is supersaturated.]
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In a five digit number, digit at ten’s place is 4, digit at unit’s place is one fourth of ten’s place digit, digit at hunderd’s place is 0,
The number is = 85041
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