Chemistry questions
29404 published questions with worked solutions.
- Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide...Not in JEE Main or NEET syllabus
- Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being
- The coordination number and the oxidation state of the element ' E ' in the complex [E(en)_2(C_2O_4)]NO_2 (where (en) is ethylene...
- In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of _o be the highest?
- The organic chloro compound, which shows complete stereochemical inversion during a S_N2 reaction, is
- Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
- - D - (+)-glucose and - D - (+) - glucose are
- Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 10^3 ms^ -1 (Mass of proton = 1.67 10^ -27 kg and...
- The set representing the correct order of ionic radius is :
- Using MO theory predict which of the following species has the shortest bond length ?
- On the basis of the following thermochemical data: ( fG^ H^+_ (aq) = 0 ) H_2O( ) H^+(aq) + OH^-(aq); H = 57.32 kJ H_2(g) +...
- Solid Ba(NO_3)_2 is gradually dissolved in a 1.0 10^ -4 MNa_2CO_3 solution. At what concentration of Ba^ 2+ will a precipitate...
- The bond dissociation energy of B − F in BF_3 is 646 kJ mol^ -1 whereas that of C − F in CF_4 is 515 kJ mol^ -1 . The correct...
- Arrange the carbanions, (CH_3)_3 C, CCl_3, (CH_3)_2 CH, C_6H_5 CH_2, in order of their decreasing stability :
- The alkene that exhibits geometrical isomerism is:
- The number of stereoisomers possible for a compound of the molecular formula CH_3 - CH = CH - CH(OH) - Me is :
- The IUPAC name of neopentane is
- Copper crystallizes in fcc with a unit cell length of 361pm. What is the radius of copper atom ?Not in JEE Main or NEET syllabus
- Two liquids X and Y form an ideal solution. At 300 K, vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550...
- A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding...