Chemistry questions
29404 published questions with worked solutions.
- The volume strength of 1 M H_2O_2 is: (Molar mass of H_2O_2 = 34 g mol^ -1 )
- The element that shows greater ability to form pπ-pπ multiple bonds, is:
- Chlorine on reaction with hot and concentrated sodium hydroxide gives:
- The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is:
- The correct order of atomic radii is:
- The element with Z = 120 (not yet discovered) will be an/a:
- The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex [M(H_2O)_6]Cl_2, is:
- Iodine reacts with concentrated HNO_3 to yield Y along with other products. The oxidation state of iodine in Y, is:
- The correct order for acid strength of compounds CH≡CH, CH_3–C≡CH and CH_2=CH_2 is as follows:
- Given: | Gas | H_2 | CH_4 | CO_2 | SO_2 | |---|---|---|---|---| | Critical Temperature / K | 33 | 190 | 304 | 630 | On the basis...Not in JEE Main or NEET syllabus
- Freezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous solution of Y. If molecular weight of X is...
- The metal d-orbitals that are directly facing the ligands in K_3[Co(CN)_6] are:
- Poly β-hydroxybutyrate-co-β-hydroxyvalerate (PHBV) is a copolymer of:Not in JEE Main or NEET syllabus
- Decomposition of X exhibits a rate constant of 0.05 μg/year. How many years are required for the decomposition of 5 μg of X into...
- Among the following compounds most basic amino acid is:
- The standard electrode potential E° and its temperature coefficient ( dE° dT ) for a cell are 2 V and -5 10^ -4 VK^ -1 at 300 K...
- Water samples with BOD values of 4 ppm and 18 ppm, respectively are:Not in JEE Main or NEET syllabus
- In a chemical reaction, A + 2B ⇌ 2C + D, the initial concentration of B was 1.5 times of the concentration of A, but the...
- Mn_2(CO)_ 10 is an organometallic compound due to the presence of:
- Two solids dissociate as follows: A(s) ⇌ B(g) + C(g); K_ p_1 = x atm^2 and D(s) ⇌ C(g) + E(g); K_ p_2 = y atm^2. The total...