NAT I Engineering Chemistry With Answers

image
image
image

NAT I Engineering Chemistry

Sr. # Questions Answers Choice
1 Water (H2O) is liquid while hydrogen sulphide (H2S) is a gas because Water has higher molecular weight Hydrogen sulphide is a weak acid Sulphur has high electronegativity than oxygen Water molecules associate through hydrogen bonding.
2 The valence orbital configuration of an element with atomic number 23 is 3d<sup>5</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>,&nbsp;<span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>1</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup>
3 Which quantum number is sufficient to describe the electron is hydrogen atom? / n m s
4 When electrons revolve is stationary orbits There is no change in energy level They vecome stationary They are gaining kinetic energy There is increase in energy
5 The symbol of the element whose atoms have the outer most electronic configuration 2s2 2p3 is N Li P Na
6 The number of electrons in the M shell of the element with number 24 is 24 12 13 8
7 The maximum number of electrons in a subshell for which / = 3 is 14 10 8 4
8 The ratio of the ionization energy of H and Be3+ is 1 : 1 1 : 3 1 : 9 1 : 16
9 The mass of the neutron is of the order of 10<sup>-23</sup> kg <span style="font-size: 14.44444465637207px;">10</span><sup>-24</sup><span style="font-size: 14.44444465637207px;">&nbsp;kg</span> <span style="font-size: 14.44444465637207px;">10</span><sup>-26</sup><span style="font-size: 14.44444465637207px;">&nbsp;kg</span> <span style="font-size: 14.44444465637207px;">10</span><sup>-27</sup><span style="font-size: 14.44444465637207px;">&nbsp;kg</span>
10 The credit of discovering neutron goes to Rutherford Langmuir Chadwick Austen
Download This Set
×