19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The oxidation number of C in CH₂O is
Which one of the following reaction involves oxidation- reduction?
The oxidation state of Fe in Fe₃O₈ is
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 oxidation st…
The oxidant which cannot act as a reducing agent is
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
The oxidation number of carbon in CH₂Cl₂ is
The oxidation number of nitrogen in NaNO₂ is
The oxidation state of chromium in Cr(CO)₆ is:
Oxidation number of nitrogen in (NH₄)₂SO₄ is
In the following equation MnO₂ acts as MnO 2H O 2e MnO 4OH →
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
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?