NAT I Medical Chemistry With Answers

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NAT I Medical Chemistry

Sr. # Questions Answers Choice
1 Which of the following process is used to separate insoluble particles from liquids? Separation Filtration Crystallization Condensation
2 Which of the following is directly related to Qualitative analysis? Identification Separation Measurement Calculation
3 If NA is Avogadro's number then number of valence electrons in 4.2 g of nitride ions N3- is 2.4 N<sub>A</sub> 4.2&nbsp;<span style="font-size: 14.44444465637207px;">N</span><sub>A</sub> 1.6&nbsp;<span style="font-size: 14.44444465637207px;">N</span><sub>A</sub> 3.2&nbsp;<span style="font-size: 14.44444465637207px;">N</span><sub>A</sub>
4 2 g oxygen contains number of atoms equal to that in 0.5 g of hydrogen 4 g of sulphur 7 g of nitrogen 2.3 g of sodium
5 The total number of protons in 10 g of calcium carbonate is (No = 6.023 x 1023) 1.5057 x 10<sup>24</sup> <span style="font-size: 14.44444465637207px;">2.0478 x 10</span><sup>24</sup> <span style="font-size: 14.44444465637207px;">3.0115 x 10</span><sup>24</sup> <span style="font-size: 14.44444465637207px;">4.0956 x 10</span><sup>24</sup>
6 The number of oxygen atoms in 4.4 g of CO2 is approximately 1.2 x 10<sup>23</sup> 6 x 10<sup>22</sup> 6 x 10<sup>23</sup> 12 x 10<sup>23</sup>
7 The number of atoms contained in 11.2 L of SO2 at S.T.P are 3/2 x 6.02 x 10<sup>23</sup> 2 x 6.02 x 10<sup>23</sup> 6.02 x 10<sup>23</sup> 4 x 6.02 x 10<sup>23</sup>
8 How many moles of Helium gas occupy 22.4 L at 0oC at 1 atm.Pressure? 0.11 0.90 1.0 1.11
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