19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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…
Which of the following statements about the following reaction is correct? 2Cu O s Cu S s 6Cu s 5O g ->
Which of the following compounds can be oxidised further with a strong oxidising agent?
Match the reactions given in column I with the number of electrons lost or gained in column II Column – 1 Column – 2 Reaction Number of electrons lost or gained a. Mn OH H O MnO -> p. b. AlCl 3K Al 3KCl -> q. c. …
In which of the following compounds is the oxidation state of carbon is zero?
Which of the following statements is wrong?
Which of the following statements is incorrect?
Consider the following unbalanced redox reaction: H2O + AX + BY -> HA + OY + X2B The possible oxidation states of B and Y in BY are, respectively,
The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is
An element exhibits an oxidation state -2. How many electrons are present in its outer shell?
The oxidation states of sulfur in the anions SO , S O and S O follow the order (a) S O S O SO (b) S O S O SO (c) S O SO S O (d) SO S O S O
Oxidation state of nitrogen is correctly given for Compound Oxidation State
+3 oxidation state is most common in
Oxidation number of iodide in IO ,IO ,KI and I respectively, are
When sulfur dioxide is passed in an acidified K2Cr2O7 solution, the oxidation state of sulfur is changed from
The oxidation states of iodine in HIO4, H3IO5 and H5IO6 respectively, are
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
The oxidation number of xenon is XeOF2 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