Posted onJuly 21, 2022inchemistry Among the following, the reaction that proceeds through an electrophilic substitution, is :
Posted onJuly 21, 2022inchemistry The non-essential amino acid among the following is (1) valine. (2) leucine. (3) alanine. (4) lysine.
Posted onJuly 21, 2022inchemistry If the rate constant for a first order reaction is k , the time (t) required for the completion of 99% of the reaction is given by
Posted onJuly 21, 2022inchemistry pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is
Posted onJuly 21, 2022inchemistry The biodegradable polymer is (1) Nylon-6,6 (2) Nylon-2-Nylon-6 (3) Nylon-6 (4) Buna-s
Posted onJuly 21, 2022inchemistry For the second period elements the correct increasing order of first ionization enthalpy is
Posted onJuly 21, 2022inchemistry Which of the following diatomic molecular species has only a bonds according to Molecular Orbital Theory ?
Posted onJuly 21, 2022inchemistry Match the following : (a) Pure nitrogen (i) Chlorine (b) Haber process (ii) Sulphuric acid (c) Contact process (iii) Ammonia
Posted onJuly 21, 2022inchemistry Which of the following is incorrect statement ? (1) PbF4 is covalent in nature
Posted onJuly 21, 2022inchemistry Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po) ?
