ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM101
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1. Lithium in the form of lithium stearate is used for the production of a substance known as __________ which minimizes friction between moving parts.
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2. Which of these alkalis has the most stable fluoride?______________
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3. Atoms of an element which have the same atomic number but different mass number is known as _________
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4. __________ is one of the isotopes of hydrogen whose neutron number is zero.
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5. Elements which achieve a stable noble gas configuration by accepting just one electron are collectively called _______
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6. Increase in principal quantum number(n) means _________ of the atomic radii
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7. _________ metals react with sulphur to form simple sulphides and polysulphides.
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8. The phenomenon in which a metal is surrounded by solvent molecules is called ________
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9. The alkali metals belong to the _______ elements
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10. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{7}4s^{2}$ is the electronic configuration for an element with atomic number ___________
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11. Hydrides of alkali metals react with water to liberate which of these?______________
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12. An element that shows some properties similar to alkali metals and some others similar to those of halogens is most likely to be _________
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13. The elements which the extra electron enters(n2)f orbitals are called ________
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14. The name given to group 2 elements in the periodic table is ________
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15. Magnesium hydride is an example of ________ hydride.
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16. The tendency of an atom to attract towards itself shared electron pair of a bond is known as ________
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17. A consequence of _______ is the formation of a chelate ring.
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18. Fuel cell have advantage over power plants in that its efficiency is _________
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19. Which of these is not a covalent hydride? ______
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20. Which property was used by Mendeleev to classify elements?_______________
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21. _________ is a radioactive isotope of hydrogen obtained on a large scale by irradiation of Li/Mg alloy of $ LiFe{3}$ with slow neutrons.
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22. Why was Newlands law of octaves rejected? ____________
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23. Which of these elements has the electronic configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{1}$? __________
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24. Hydrogen can be obtained economically as a bi-product in the electrolysis of a compound called ________
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25. Ortho and para-hydrogen exemplifies a type of isomerism referred to as __________ isomerism.
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26. The most abundant metal in sea water is called ______.
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27. All these can be used as raw materials for the production of oxygen except ______
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28. _______ is a compound formed when hydrogen combines covalently with non-metals.
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_____states that as far as possible in a given atom in the ground state, electrons in the same sub shell will occupy different orbitals and will have parallel spins.
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30. Hydrogen is discharged at ___________ electrode during the electrolysis of brine
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31. Which of the following is not true as we move down a group of s and p-block elements in the periodic table? ________
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32. Which of the isotopes of hydrogen is radioactive?_________
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33. The presence of hydrogen bond in most molecules is responsible for the following EXCEPT ________
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34. The attractive force which binds hydrogen atom of one molecule with an electronegative atom of another molecule is known as _________
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35. How many electrons are in potassium atom? __________
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36. Stability of alkali salts depends on which of the following?_______________
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37. Ionization energy ________ down the group within the alkali metals
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38. Which of these statements is not true of metallic elements?_________
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39. The percentage of deuterium in natural occurring hydrogen is ________
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40. Halogens have ________ electron affinity
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41. Alkaline metals are extracted mainly by _________
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42. Which of these alkali metals is the most electro-positive?______________
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43. The stability of alkali salts depend on ______
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44. Which of these elements behave partly as the alkaline metals as well as a halogen element? _________
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45. Within the alkali metals, atomic size _________ down the group.
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46. Hydride ion is unusually _________ with respect to size
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47. Berylium , an alkaline earth metal belongs to the _______ block elements.
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48. Inner transition elements are otherwise known as ________
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49. How many elements are there in period 6 of the periodic table ? __________
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50. Which of these periods of the periodic table has only eight elements? ________
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