19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Assertion (A): SO₂ and Cl₂ are both bleaching agents Reason (R): Both are reducing agents
Assertion (A): H₂O₂ can acts as an oxidizing agent. Reason (R): All the peroxides behave as oxidizing agents only.
In the reaction 2FeCl H S 2FeCl 2HCl S →
In the reaction 3Br 6CO 3H O 5Br BrO 6HCO →
In the reaction o 5 2 3Cl 6NaOH Na ClO 5Na Cl 3H O → The element which loses as well as gains electrons is
The number of electrons lost in the following change is Fe H O Fe O H →
Which of the following is the best description of the behaviour of bromine in the reaction given below? o H O Br HOBr H Br →
In the reaction o o ½ K O KO →
In the reaction, SO 2H S 3S 2H O → the substance oxidized is
A metal ion M3+ loses 3 electrons, its oxidation number will be :
In which of the compounds does manganese exhibit highest oxidation number?
In which of the following compounds, the oxidation number of iodine is fractional?
In which of the following compounds is the oxidation state of C a fraction?
In the equation NO H O NO 2H ne → n stands for
An element exhibits an oxidation state -2. How many electrons are present in its outer shell?
The oxidation state of C in diamond is
The oxidation number of C in HNC is
An element that never has a positive oxidation state in any of its
Nitrogen show different oxidation states in the range
The oxidation number of xenon is XeOF₂ is
An oxidation process involves
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)