Chemistry questions
29404 published questions with worked solutions.
- The number of compound/s given below which contain/s –COOH group is_______. (A) Sulphanilic acid (B) Picric acid (C) Asprin (D)...
- The rate constant of a reaction increases by five times on increase in temperature from 27°C to 52°C. The value of activation...
- The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is_______ BM.
- Electromagnetic radiation of wavelength 663 nm is just sufficient to ionise the atom of metal A. The ionization energy of metal A...
- Consider titration of NaOH solution versus 1.25M oxalic acid solution. At the end point following burette readings were obtained....
- Copper reduces NO_3^- into NO and NO_2 depending upon the concentration of HNO_3 in solution. (Assuming fixed [Cu^ 2+ ] and P_ NO...
- The unit cell of copper corresponds to a face centered cube of edge length 3.596 Å with one copper atom at each lattice point....Not in JEE Main or NEET syllabus
- Given below are two statements: Statement I : CeO_2 can be used for oxidation of aldehydes and ketones. Statement II : Aqueous...
- According to molecular theory, the species among the following that does not exist is:
- Which of the following equation depicts the oxidizing nature of H_2O_2?
- The correct statement about B_2H_6 is:
- In which of the following pairs, the outer most electronic configuration will be the same?
- Which of the glycosidic linkage between galactose and glucose is present in lactose?
- The hybridization and magnetic nature of [Mn(CN)_6]^ 4- and [Fe(CN)_6]^ 3- , respectively, are:
- The solubility of AgCN in a buffer solution of pH = 3 is x. The value of x is: [Assume : No cyano complex is formed; K_ sp...
- In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption ( x m ) is directly proportional to P^x. The...Not in JEE Main or NEET syllabus
- 1 molal aqueous solution of an electrolyte A_2B_3 is 60% ionised. The boiling point of the solution at 1 atm is ________K....
- In basic medium CrO_4^ 2- oxidises S_2O_3^ 2- to form SO_4^ 2- and itself changes into Cr(OH)_4^-. The volume of 0.154 M CrO_4^...
- The reaction of cyanamide, NH_2CN(s) with oxygen was run in a bomb calorimeter and U was found to be –742.24 kJ mol^ -1 . The...
- For the reaction, aA + bB cC + dD, the plot of log k vs 1 T is given below. The temperature at which the rate constant is 10^ -4...