Chemistry questions
29404 published questions with worked solutions.
- The amount of water produced (in g) in the oxidation of 1 mole of rhombic sulphur by conc. HNO_3 to a compound with the highest...
- Total number of *cis* N–Mn–Cl bond angles (that is, Mn–N and Mn–Cl bonds in *cis* positions) present in a molecule of *cis*-...
- The decomposition reaction 2N_2O_5(g) 2N_2O_4(g)+O_2(g) is started in a closed cylinder under isothermal isochoric condition at...
- The mole fraction of urea in an aqueous urea solution containing 900 g of water is 0.05. If the density of the solution is 1.2 g...
- Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula C_4H_8O is...
- Identify the element having zero valency
- There are six electrons, six protons and six neutrons in an atom of an element. What is the atomic number of the element ?
- Which one of the following has different number of molecules ? (All are kept at normal temperature and pressure)
- Which one of the following species is not capable of showing disproportionation reaction ?
- Emulsion is known as aNot in JEE Main or NEET syllabus
- Which one of the following gases gives acidic solution on dissolving in water ?
- How many moles of hydrogen atom are present in one mole of Aluminium hydroxide ?
- Molecules of which of the following has cage like structure ? 1. Diamond 2. Graphite 3. Fullerenes Select the correct answer...
- Rutherford's alpha-particle scattering experiment was responsible for the discovery of
- A homogeneous mixture contains two liquids. How are they separated ?
- Which one of the following elements corrodes rapidly ?
- 20 g of common salt is dissolved in 180 g of water. What is the mass percentage of the salt in the solution ?
- The valency of an element depends upon the
- Match List I with List II and select the correct answer using the code given below the Lists : List I (Noble gas) A. Argon B....
- Which one of the following elements is used in pencil-lead ?