CHM101

Category: CHM101

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. 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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2. Which of these statements is not true of metallic hydrides? _______

A. They are conductors of heat

B. most have metallic appearance

C. they are deficient in hydrogen

D. they are volatile

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3. The most abundant metal in sea water is called ______.

A. rubidium

B. zinc

C. sodium

D. lithium

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4. The stability of alkali salts depend on ______

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5. The alkali metals belong to the _______ elements

A. d-block

B. f-block

C. p-block

D. s-block

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6. Elements which achieve a stable noble gas configuration by accepting just one electron are collectively called _______

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7. Ionization energy ________ down the group within the alkali metals

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8. The percentage of deuterium in natural occurring hydrogen is ________

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9. Fuel cell have advantage over power plants in that its efficiency is _________

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10. Stability of alkali salts depends on which of the following?_______________

A. crystal lattice of the salt formed

B. enthalpy of formation of the salt

C. intensity of sun rays incident on it

D. atomic size of the metal

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11. Alkaline metals are extracted mainly by _________

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12. Hydride ion is unusually _________ with respect to size

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13. _______ is a compound formed when hydrogen combines covalently with non-metals.

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14. Increase in principal quantum number(n) means _________ of the atomic radii

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15. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{7}4s^{2}$ is the electronic configuration for an element with atomic number ___________

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16. Which of these elements has the electronic configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{1}$? __________

A. Zn

B. Ca

C. Kr

D. Cu

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17. Ortho and para-hydrogen exemplifies a type of isomerism referred to as __________ isomerism.

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18. Which of these alkali metals is the most electro-positive?______________

A. calcium

B. lithium

C. potassium

D. sodium

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19. Which of the following is not true as we move down a group of s and p-block elements in the periodic table? ________

A. Atomic radius increases steadly

B. Electronegativity also increases

C. Effective nuclear charge is relatively constant

D. The value of principal quantum number increases

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20. Which of these periods of the periodic table has only eight elements? ________

A. 5

B. 3

C. 1

D. 7

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21. Within the alkali metals, atomic size _________ down the group.

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22. The name given to group 2 elements in the periodic table is ________

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23. The attractive force which binds hydrogen atom of one molecule with an electronegative atom of another molecule is known as _________

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24. The tendency of an atom to attract towards itself shared electron pair of a bond is known as ________

A. electronegativity

B. electron affinity

C. atomic attraction

D. bonding

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25. Magnesium hydride is an example of ________ hydride.

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26. Which of these statements is not true of metallic elements?_________

A. they are ductile

B. they have lustre

C. They form acidic oxides

D. they are malleable

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27. A consequence of _______ is the formation of a chelate ring.

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28. Which of these elements behave partly as the alkaline metals as well as a halogen element? _________

A. Fluorine

B. Helium

C. Silicon

D. Hydrogen

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29. The phenomenon in which a metal is surrounded by solvent molecules is called ________

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30. Hydrides of alkali metals react with water to liberate which of these?______________

A. light

B. hydrogen

C. ammonia

D. oxygen

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31. Which of the isotopes of hydrogen is radioactive?_________

A. Neutrium

B. Protium

C. Tritium

D. Deutrium

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32. Hydrogen is discharged at ___________ electrode during the electrolysis of brine

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33. How many elements are there in period 6 of the periodic table ? __________

A. 32

B. 8

C. 24

D. 16

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34. Which of these is not a covalent hydride? ______

A. Ethyne

B. Ammonia

C. Hydrochloric acid gas

D. NaH

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35. Berylium , an alkaline earth metal belongs to the _______ block elements.

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36. _________ metals react with sulphur to form simple sulphides and polysulphides.

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37. Why was Newlands law of octaves rejected? ____________

A. Many radioactive elements had not been discovered then

B. It could not hold good for elements heavier than calcium

C. The cycle of repetition shown by elements is similar to octave in music

D. Elements were arranged in increasing order of atomic mass

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38. The elements which the extra electron enters(n2)f orbitals are called ________

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39. The presence of hydrogen bond in most molecules is responsible for the following EXCEPT ________

A. High solubility in water

B. Very high boiling point

C. High melting point

D. Low boiling point

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40. Inner transition elements are otherwise known as ________

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41. Which property was used by Mendeleev to classify elements?_______________

A. mass number

B. atomic weight

C. atomic number

D. chemical properties

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42. __________ is one of the isotopes of hydrogen whose neutron number is zero.

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43. How many electrons are in potassium atom? __________

A. 31

B. 19

C. 23

D. 11

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44. All these can be used as raw materials for the production of oxygen except ______

A. steam

B. carbon(II)oxide

C. coke

D. nitrogen

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45. Which of these alkalis has the most stable fluoride?______________

A. potassium

B. sodium

C. rubidium

D. lithium

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46. 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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47. Hydrogen can be obtained economically as a bi-product in the electrolysis of a compound called ________

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48.

_____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.

A. Aufbau's principle

B. Guy's law

C. Paul Exclusion principles

D. Hund's rule

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49. _________ 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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50. Halogens have ________ electron affinity

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