CHEMISTRY Time:  Two Hours                                                                                                     Maximum Marks : 100   Note: i) There are TEN questions in this paper. Attempt ALL ii) Answer each question starting on a new page. The corresponding question number must be written in the left margin.…

CHEMISTRY     Time:  Two Hours                                                                                                     Maximum Marks : 100     Note: i) There are TWELVE questions in this paper. Attempt ALL ii) Answer each question starting on a new page. The corresponding question number must be written in…

CHEMISTRY Time:  Two Hours                                                                                                     Maximum Marks : 100   Note: i) There are TEN questions in this paper. Attempt ALL ii) Answer each question starting on a new page. The corresponding question number must be written in the left margin.…

If E0 (Fe3+/Fe) = – 0.036 V & E0‑(Fe2+/Fe) = – 0.439 V, the value of E0 (Fe3+, Fe2+/Pt) is (A) – 0.475 V                                                   (B) 0.403 V (C) 0.77V                                                         (d)  0.986 V   The standard reduction potential of 2H2O +…

The dissociation energy of CH4 and C2H6 are respectively 360 and 620 kcal/mol. The bond energy of C – C bond (kcal/mol) is (A) 260                                                            (B) 180 (C) 130                                                            (D) 80   , p1 and p2 are pressure, cell reaction…

PAPER – IV     Photoelectric emission is observed from a surface for frequencies n1 and n2 of the incident radiation (n1 > n2). If the maximum kinetic energies of the photoelectrons in the two cases are in the ratio…

PAPER – III     The value of the Vander Waal’s constant ‘a’ for the gases O2, N2, NH3 and CH4 are 1.36, 1.39, 4.17 and 2.253 unit respectively. The gas which can be liquefied most easily is (A) O2                                                             …

PAPER – I     17g of hydrogen peroxide is present in 1120 ml of solution. This solution is called (A) 5 volume solution                                      (B) 10 volume solution (C) 15 volume solution                                    (D) 16 volume solution   The density of…

PAPER – I   A radioactive isotope having a half-life of 3 days was received after 12 days. It was found that there were 3g of the isotope in the container. The initial weight of the isotope when packed was…

The hardness of water is usually expressed in (A) ppm                                                           (B) g/litre (C) mol/litre                                                     (D) litre/gm   Avogadro’s number is the no. of molecules present in (A) 22.4 litre of a gas at NTP                          (B) 1 mole of a substance…