Chemistry questions
29404 published questions with worked solutions.
- Which of the following complex will show largest splitting of d-orbitals ?
- How can photochemical smog be controlled ?Not in JEE Main or NEET syllabus
- Choose the correct statement(s) (A) Beryllium oxide is purely acidic in nature. (B) Beryllium carbonate is kept in the atmosphere...Not in JEE Main or NEET syllabus
- Decreasing order of dehydration of the following alcohols is: (a) cyclopentanol (b) 1-phenylcyclopentan-1-ol (c)...
- Resonance in carbonate ion (CO_3^ 2- ) is shown by three equivalent resonance structures. Which of the following is true ?
- Sum of oxidation states of bromine in bromic acid and perbromic acid is _________.
- Number of isomeric compounds with molecular formula C_9H_ 10 O which (i) do not dissolve in NaOH (ii) do not dissolve in HCl....
- A and B are two substances undergoing radioactive decay in a container. The half life of A is 15 min and that of B is 5 min. If...
- At 25°C, the enthalpy of the following processes are given H_2(g)+O_2(g) 2OH(g) H^0 = 78 kJ mol^ -1 ; H_2(g)+ 1 2 O_2(g) H_2O(g)...
- The density of 3 solution of NaCl is 1.0 g mL^ -1 . Molality of the solution is _________ 10^ -2 m. (Nearest integer). Given :...
- (i) X(g) Y(g)+Z(g) K_ p_1 = 3; (ii) A(g) 2B(g) K_ p_2 = 1 If the degree of dissociation and initial concentration of both the...
- At what pH, given half cell MnO_4^-(0.1 M) | M^ 2+ (0.001 M) will have electrode potential of 1.282 V ? ________ (Nearest...
- The total number of chiral compound/s from the following is __________.
- The IUPAC name of K_3[Co(C_2O_4)_3] is:
- During the reaction of permanganate with thiosulphate, the change in oxidation state of manganese occurs by value of 3. Identify...
- The volume of 0.02 M aqueous HBr required to neutralize 10.0 mL of 0.01 M aqueous Ba(OH)_2 is (Assume complete neutralization)
- The product, which is not obtained during the electrolysis of brine solution is
- Given below are two statements: one is labelled as "Assertion A" and the other is labelled as "Reason R" Assertion A : In the...
- Ion having highest hydration enthalpy among the given alkaline earth metal ions is:
- Formation of which complex, among the following, is not a confirmatory test of Pb^ 2+ ions?