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Chemistry Fsc Part 1 Chapter 2 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The value for (n) Principal quantum numebr can not be. |
<p>0</p> <p>1</p> <p>2</p> <p>3</p> |
| 2 | 1st ionization energy is. |
<p>Exothermic </p> <p>Endothermic</p> <p>Both</p> <p>Depend upon atom</p> |
| 3 | If we remove electrons from an atom until the nucleus is left, then it is called. |
<p>Ionization energy</p> <p>Ionization potential</p> <p>Successive ionization energy</p> <p>All</p> |
| 4 | Mass of neutron in amu is. |
<p>1.0073</p> <p>1.0067</p> <p>1.0087</p> <p>1.0000</p> |
| 5 | Atoms having same atomic mass but different atomic numebr are called. |
<p>Isobars</p> <p>Isotopes</p> <p>Isotones</p> <p>Isoelectrons</p> |
| 6 | Atom having same atomic numebr but different mass numebr are called. |
<p>Isotopes</p> <p>Isotones</p> <p>Isobars</p> <p>Isoelecrons</p> |
| 7 | How many electron presetn in Cl are. |
<p>17</p> <p>18</p> <p>19</p> <p>35</p> |
| 8 | Number of neutrons present in Cl are |
<p>18</p> <p>17</p> <p>19</p> <p>25</p> |
| 9 | Square root of the freuency of X-rays is............atomic number |
<p>Directly proportional to</p> <p>Inversely Proportional to</p> <p>Equal to</p> <p>Half of</p> |
| 10 | How many unparied electrons are present in an atom of cobalt. |
<p>Two</p> <p>Three</p> <p>Four</p> <p>Five</p> |
| 11 | What information does the pricnipal quantum numerb (n) gives us about orbitals |
<p>size</p> <p>Shape</p> <p>Spin</p> <p>Size and shape</p> |
| 12 | How many d orbitals are there in a givne energy level. |
<p>1</p> <p>5</p> <p>3</p> <p>7</p> |
| 13 | The three p orbitals in a given energy level are oriented. |
<p>Along the same axis</p> <p>At 45<sup>o</sup> each other</p> <p>Mutually perpendicular to each other along the x, y , and z axes.</p> <p>In a complex tetrahedral arrangement</p> |
| 14 | A p orbital has a characteritic shape with how many lobes. |
<p>1</p> <p>2</p> <p>3</p> <p>4</p> |
| 15 | The quantum numebr values for the fourth electron of Be atom are. |
<p>1,0,0</p> <p>2,0,0</p> <p>2,1,0</p> <p>1,1,1</p> |
| 16 | An electron having the set of values n = 4, 1 = 0 ,m = 0 and s =+1/2 lies in |
<p>2 s</p> <p>4 s</p> <p>3s</p> <p>5s</p> |
| 17 | Quantum numebr values for 2 p orbitals are. |
<p>n = 2, , l = 1</p> <p>n = 1, 1= 2</p> <p>n = 1, 1= 0</p> <p>n= 2,1 = 0</p> |
