JEE Advanced questions
3844 published questions with worked solutions.
- There are two types of sulphur with different oxidation states in the thiosulphate ion. The difference in oxidation states is...
- How many of the following have the underlined atoms in different oxidation states? K2HgI4, CaOCl2, Na2S2O3, Na2S4O6, H2SO5,...
- Ozonolysis of 2,5-dimethyl-2,4-hexadiene gives a total number of carbonyl compounds equal to _____.
- How many lone pairs are present in ClI3?
- Br− and BrOx− in acidic medium form Br2, where x = _____.
- How many of the following can be an oxidizing agent? H2S, H2SO4, H2SO3, H2S2O3
- SO2 reduces Cr2O7²⁻ to Cr3+. The (total) change in oxidation number of Cr (per mole of dichromate) is _____.
- How many of the following have peroxy linkages? H2S2O3, H2S2O8, H2SO5, CrO5, BaO2, KO2
- Maximum oxidation state shown by sulphur in its compounds is _____.
- Number of electrons forming the bond between Cl and O in ClO2 is _____.
- How many of the following have a Cl atom in sp3 hybridised state? ClO2, Cl2O, Cl2O7, Cl2O6, ClO4−
- XeF6 reacts with quartz, forming XeO3: 2XeF6 + xSiO2 → 2XeO3 + ... . What is the value of x?
- 3Cl2 + xNaOH → NaCl + NaClO3 + ... , x is _____.
- When MnO_2 is fused with KOH, a coloured compound formed, the product and its colour is [IIT JEE 2003]
- The methods chiefly used for the extraction of lead and tin from their ores are respectively [IIT JEE 2004]Not in JEE Main or NEET syllabus
- Extraction of zinc from zinc blende is achieved by [IIT JEE 2007]Not in JEE Main or NEET syllabus
- (NH_4)_2Cr_2O_7 on heating gives a gas which is also given by [IIT JEE 2004]
- Which pair of compounds is expected to show similar colour in aqueous medium? [IIT JEE 2005]
- Match List I with List II and select the correct answer using the codes given below the lists. Column-I (A) Cr^ 3+ (B) Fe^ 2+ (C)...
- Statement 1: Oxalates and carbonates of lanthanides are almost insoluble in water. Statement 2: Salts of lanthanides usually...