When zinc is treated with dilute nitric acid, the gas formed is____

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When zinc is treated with dilute nitric acid, the gas formed is N2O. The equation is Zn + HNO3 -----------------------> Zn(NO3)2 + N2O + H2O

Of the options given, a physical property that does not belong to nitric acid is___

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The physical properties of nitric acid are: - 1. The impure acid is yellow in colour. 2. It has boiling point 355.6 K. 3. It has a corrosive action on skin and produces painful blisters. 4. It is a colourless liquid.

On reaction of nitric acid with metals, the reduction products formed are____ and____

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Reaction with metals which are more electropositive than hydrogen, nascent hydrogen is liberated. This further reduces nitric acid giving a variety of reduction products such as N2O, NO, NO2, NH3 and NH4NO3.

The specific gravity of the laboratory grade nitric acid is____

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Laboratory grade nitric acid contains about 68% of nitric acid by mass and has a specific gravity of 1.504.

When three parts of concentrated hydrochloric acid reacts with one part of concentrated nitric acid, the products formed are_____, ____and____

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When three parts of concentrated hydrochloric acid reacts with one part of concentrated nitric acid, the products formed are nascent chloride, water and nitrosyl chloride. The reaction is as follows: 3HCl + HNO3 ---------------> NOCl + 2H2O + 2Cl

The impurity present in impure nitric acid is____

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The impure nitric acid is generally yellow in colour due to the presence of nitrogen dioxide as impurity. Nitric acid containing dissolved nitrogen dioxide is known as fuming nitric acid.

The balanced equation for the reaction NO3- + Fe2+ + H+ ----------> NO + Fe3+ + H2O is

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The balanced equation is NO3- + 3Fe2+ + 4 H+ ----------> NO + 3Fe3+ + 2H2O.

When copper is treated with concentrated nitric acid, the gas formed is____

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When copper is treated with concentrated nitric acid, the gas formed is nitrogen dioxide. The equation is: - Cu + HNO3 --------------> Cu(NO3)2 + NO2 + H2O

The formula of the compound formed during Brown ring test of nitrate radical is____

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The formula of the compound formed during brown ring test of nitrate radical is pentaaquanitrosyliron (II) sulphate - [Fe(H2O)5NO]SO4. Brown ring test is be performed by adding iron (II) sulfate to the solution. When concentrated sulfuric acid is slowly added, a brown ring is formed on the test tube, which will indicate the presence of the nitrate ion. The test follows several phases. These have been written as balanced chemical equations: Equation 1 2 Zn(NO3)2 + 2 H2SO4 → 2 ZnSO4 + 4 HNO3 4 FeSO4 + 2 H2SO4 → 2Fe2(SO4)3 + 2H2 These two reactions happen simultaneously. Equation 2 4 HNO3 → 2 H2O + 3O2 + 4NO The Nitric Acid decomposes in the intense heat produced by the high concentrate Sulphuric Acid used. Equation 3 2Fe2(SO4)3 + 2H2 + 4NO → 4[Fe(H2O)5NO]SO4 + 2H2SO4 The [Fe(H2O)5NO]SO4 forms a brown ring in the middle of the solution produced by the reaction, making it easy to identify the presence of nitrates in the water.

The balanced equation for the reaction Fe + dil. HNO3 ------------------> is____

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The complete balanced equation is: 4 Fe + dil. 10 HNO3 ------------------> 4Fe(NO3)2 + 3 H2O + NH4NO3

ICSE Class 10th Chemistry 9 - Study of compounds - Nitric acids MCQs
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