Chemistry questions
29404 published questions with worked solutions.
- In Carius method of estimation of halogen, 0.45 g of an organic compound gave 0.36 g of AgBr. Find out the percentage of bromine...
- Match List I with List II. List I: A. Benzenesulphonyl chloride B. Hoffmann bromamide reaction C. Carbylamine reaction D....
- 20 mL of 0.02 M K_ 2 Cr_ 2 O_ 7 solution is used for the titration of 10 mL of Fe^ 2+ solution in the acidic medium. The molarity...
- Amongst the following, the number of oxide(s) which are paramagnetic in nature is Na_ 2 O, KO_ 2 , NO_ 2 , N_ 2 O, ClO_ 2 , NO,...
- According to MO theory, number of species/ions from the following having identical bond order is _____. CN^ - , NO^ + , O_ 2 , O_...
- At 310 K, the solubility of CaF_ 2 in water is 2.34 10^ -3 g/100 mL. The solubility product of CaF_ 2 is _____ 10^ -8 (mol/L)^ 3...
- The conductivity of a solution of complex with formula CoCl_ 3 (NH_ 3 )_ 4 corresponds to 1 : 1 electrolyte, then the primary...
- In the titration of KMnO_ 4 and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is _____.
- Optical activity of an enantiomeric mixture is +12.6° and the specific rotation of (+) isomer is +30°. The optical purity is...
- Identify the incorrect statement for PCl_ 5 from the following.
- Statement-I : Leaching of gold with cyanide ion in absence of air/O_ 2 leads to cyano complex of Au(III). Statement-II : Zinc is...Not in JEE Main or NEET syllabus
- The correct order of increasing intermolecular hydrogen bond strength is
- The correct order of increasing ionic radii
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Fluorine...
- In 3d series, the metal having the highest M^ 2+ /M standard electrode potential is
- The 'f' orbitals are half and completely filled, respectively in lanthanide ions [Given: Atomic no. Eu, 63; Sm, 62; Tm, 69; Tb,...
- Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers: Mn = 25; Fe = 26) (i)...
- Given below are two statements Statement I : Maltose has two -D-glucose units linked at C_ 1 and C_ 4 and is a reducing sugar....
- Match List I with List II. List I: A. Antipyretic B. Analgesic C. Tranquilizer D. Antacid List II: I. Reduces pain II. Reduces...Not in JEE Main or NEET syllabus
- Match List I with List II. List I (Anion): A. CO_ 3 ^ 2- B. S^ 2- C. SO_ 3 ^ 2- D. NO_ 2 ^ - List II (Gas evolved on reaction...