7info Times

9.Hydrogen: 1. Hydrogen is a) electropositive b) electronegative c) Both electropositive as well as electronegative d) Neither electropositive nor as electronegative 2. Number of neutrons in the nucleus of tritium  is (a) 1                                    (b) 2 (c) 3                                    (d) 4 3. Deuterium atom (a) has the same atomic mass as a hydrogen atom (b) has the same electronic configuration as hydrogen atom. (c) has the same composition of the nucleus as the hydrogen atom. (d) contains one more proton than a hydrogen atom. 4. The isotope of hydrogen which is radioactive is (a) Tritium   ...

8. Nature Of Chemical Bond: 1. Which of the following molecules involves electrovalent bond     a) H 2                               b) CH 4     c) CaCl 2                          d)   HCl 2. The tetravalency of carbon is explained by its     a) ground state E.C.      b) excited state E.C.     c) sp 3 hybridisation       d) sp 2 hybridisation 3. Among the following, the molecule with linear geometry is       a) C 2 H 4                          ...