Chemistry Question Bank

In which of the following processes is nitrogen oxidized? (a) NH N -> (b) NO NO -> (c) NO NO -> (d) NO NH -> Ans (a) Sol. o NH N -> Oxidation state of N = -3 Oxidation state of N = 0 In the other reaction, the oxid…

The oxidant which cannot act as a reducing agent is

An element that never has a positive oxidation state in any of its

The oxidation number S in Na2S4O6 is

The oxidation number of P in Mg2P2O7 is

The oxidation number of Pr in Pr6O11 is

Oxidation number of Cl in CaOCl2 (bleaching powder) is

Nitrogen show different oxidation states in the range

The oxidation number of carbon in CH2Cl2 is

For the reaction, H PO NaOH NaH PO H O -> What is the equivalent weight of H3PO2? (mol. wt. is M)

n-factor of Ba(MnO4)2 in acidic medium is

aK Cr O bKCl cH SO -> xCrO Cl yKHSO zH O The above equation balances when

In the neutral or faintly alkaline medium, KMnO4 oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from (NEET 2022)

Which of the following reactions do not involve oxidation-reduction? I.2Rb 2H O 2RbOH H II.2CuI 2CuI I III.NH Br KOH KBr NH H O IV.4KCN Fe CN K Fe CN -> -> -> ->

Which of the following represents a redox reaction? (a) NaOH HCl NaCl H O -> (b) BaCl H SO BaSO 2HCl -> (c) CuSO 2H O Cu OH H SO -> (d) Zn 2HCl ZnCl H -> Ans (d) Sol.

Which of the following reaction is disproportionation? (a) 2H S SO 2H O 3S -> (b) Ca H CaH -> (c) P 3NaOH 3H O PH 3NaH PO ->

Which of the following is not an intermolecular redox reaction? (a) MgCO MgO CO -> (b) O 2H 2H O -> (c) K H O KOH H -> (d) MnBr MnBr Br -> Ans (a) Sol. Intermolecular redox reaction and redox reactions …

Which of the following is not a disproportionation reaction? o I. NH NO N O 2H O II.P 3NaOH 3H O P H NaH P O -> -> REDOX REACTIONS III. PCl PCl Cl IV. IO I H I H O -> ->

The reaction, 3ClO (aq) ClO (aq) 2Cl (aq) -> is an example of

Which of the following is a disproportionation reaction? (a) Cu O 2H Cu Cu H O -> (b) 2CrO 2H Cr O H O -> (c) CaCO 2H Ca H O CO -> (d) Cr O 2O H 2CrO H O -> Ans (a) Sol. A chemical reaction in whic…

Balance the following equation and choose the correct value of sum of coefficients of the products: CS Cl CCl S Cl ->

In the reaction, ->Br2 + xBrO yCr zH O HCrO H , REDOX REACTIONS the coefficients x, y and z are

For the reaction: NH OCl N H Cl -> in basic medium, the coefficients of NH3,OCl and N2H4 for the balanced equation are respectively

In a balanced equation, H SO xHI H S yI zH O -> the value of x, y and z are

In the reaction, 2IO xSO 4H O 5SO 8H I -> The coefficient of SO2 in balanced equation is