BOARD OF INTERMEDIATE EDUCATION, KARACHI

INTERMEDIATE EXAMINATION, 2015 (ANNUAL)

Date: 12.05.2015 CHEMISTRY PAPER – I Max. Marks: 17

9:30 a.m. to 9:50 a.m. (Science Pre-Engineering & Pre-Medical Groups) Time: 20 minutes

SECTION ‘A’

(MULTIPLE CHOICE QUESTIONS – M.C.Qs.)

NOTE: i) This section consists of 17 part questions and all are to be answered.

Each question carries one mark.

ii)  Do not copy the part questions in your answerscript. Write only the answer in full against the proper number of the question and its part.

iii)  The code of your question paper is to be written in bold letters in the beginning of the answerscript.

1. Choose the correct answer for each from the given options:

i)  The (n + l) value for 5d orbital is:

* 4 * 5 * 6 * 7

ii)  Dipole moment of is zero. Hence, the bond angle is:

* * * *

iii)  The most favourable conditions of temperature and pressure for oxidation of into are:

* low temperature and high pressure * low temperature and low pressure

* high temperature and high pressure * high temperature and low pressure

iv)  The volume of required for the neutralization of of is:

* * * *

v)  Photochemical reactions, which proceed only under the influence of light, are of the order:

* Zero * First * Second * Third

vi)  This one of the following pairs has the same number of molecules:

* *

* *

vii)  If a=b=c and then the shape of the crystal is:

* Cubic * Tetragonal * Hexagonal * Orthorhombic

viii)  The following pair of ions is isoelectronic:

* * * *

ix)  This one of the following colours has the shortest wavelength:

* Red * Blue * Violet * Orange

x)  The S.I. unit of Dipole moment is:

* dyne/cm * Poise * Debye * Coulomb-metre

xi)  1 Cal. is equal to:

* 0.239 J * 1.98 J * 4.184 J * 8.314 J

xii)  When 2 moles of solute are present in 2dm3 of solution, then the concentration of the solution is:

* 0.5 M * 1 M * 2 M * 3 M

xiii)  With an increase in temperature, a system involving exothermic reaction will:

* move in the forward direction * move in the reverse direction

* remain at equilibrium * none of these

xiv)  The oxidation number of Sulphur in NaHSO4 is:

* –2 * 0 * +4 * +6

xv)  This not a primary bond:

* Ionic bond * Covalent bond * Dative bond * Hydrogen bond

xvi)  For the reaction , the relationship between Kc and Kp is:

* * * *

xvii)  Conduction in metals is due to the movement of:

* ions * electrons * protons * atoms

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