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question_answer1) If an element is in its lowest oxidation state, under appropriate condition, it can act as
question_answer2) Decomposition \[{{H}_{2}}{{O}_{2}}\to {{H}_{2}}O+{{O}_{2}}\] is an example of
question_answer3) Strong reducing agent is
question_answer4) The reaction \[2Na+C{{l}_{2}}\to 2NaCl\] is an example of
question_answer5) Which of the following reactions involves the combination of two elements?
question_answer6) Hydrogen gas will reduce
question_answer7) In the rusting of iron, iron h as been
question_answer8) When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide and oxygen. \[2Pb{{(N{{O}_{3}})}_{2}}\to 2PbO+4N{{O}_{2}}+{{O}_{2}}\] The reaction is an example of
question_answer9) Difference between valency and oxidation number are folio-vying except
question_answer10) Valency and oxidation number can be represented for an element or a radical \[{{H}_{2}}S+8HN{{O}_{3}}\to {{H}_{2}}S{{O}_{4}}+8N{{O}_{2}}+2{{H}_{2}}O\]. How many total electron have been transferred?
question_answer11) An element in its free state will have the oxidation number
question_answer12) Oxidant in a redox reaction
question_answer13) When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of
question_answer14) The state oxidation state of aluminium is
question_answer15) When zinc is added to \[CuS{{O}_{4}}\] solution, copper is precipitated because
question_answer16) When the gases sulphur dioxide and hydrogen sulphide mix in the presence of water the reaction \[S{{O}_{2}}+2{{H}_{2}}S\to 2{{H}_{2}}O+3S\]occurs. Here hydrogen sulphide is acting as
question_answer17) In the reaction \[2FeC{{l}_{2}}{{+}_{\text{X}}}HCl\to 2NaCl+C{{O}_{2}}+{{H}_{2}}O\] chlorine may be regarded as
question_answer18) In the equations :\[N{{a}_{2}}C{{O}_{3}}{{+}_{\text{X}}}HCl\to 2NaCl+C{{O}_{2}}+{{H}_{2}}O\]the value of \[X\] is
question_answer19) In the equation-\[NaOH+HN{{O}_{3}}\to NaN{{O}_{3}}+{{H}_{2}}O\] nitric acid is acting as
question_answer20) Which of the following is not a balanced equation?
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