CHM101 List of Questions and Answer
Q1 In the periodic table,period 6 contains —— elements
Q2 Which of these is not an isotope of hydrogen?
Q3 __________ forms an oxide also known as heavy water.
Q4 Which of the isotopes of hydrogen is radioactive?
Q5 All these can be used as raw materials for the production of oxygen except
Q6 Hydrogen can be obtained economically as a bi-product in the electrolysis of ——
Q7 Which if these is not a property of hydrogen?
Q8 Hydrogen may be used for all but one of the following.
Q9 Hydrogen may not be advantagous as a fuel because——-
Q10 Hydrogen may be used for all but one of the following
Q11 ______types of hydride compounds can be formed depending on the electronegativity of the elements
Q12 When alkali metals are heated with hydrogen they form——–hydrides
Q13 Silt is an example of —— hydride
Q14 Which of these statements is not true of metallic hydrides?
Q15 Sodium Hydride is an example of ——- hydride
Q16 All these are types of metal lattices except——-
Q17 Which of these statements is not true of metallic elements?
Q18 All these are consequences of the sole valence electron in alkali metals except ——
Q19 Which of these statements is not true?
Q20 In the group of the alkali metals the degree of hydration——– down the group.
Q21 When a metal is sourrounded by solvent molecules not water, the phenomenon is called——–
Q22 Which of these element does not belong to the alkali metals
Q23 Decrease in hydration energy makes a compound ——
Q24 Which of these increases solubility of compounds
Q25 The charge on cations—— down a group
Q26 Hydrides of alkali metals react with water to librate——
Q27 Alkali metals react with sulphur to form —- types of sulphides
Q28 Ionization energy—— down the group within the alkali metals
Q29 Within the alkali metals atomic size ——–
Q30 Potassium compounds can be used for all but one of the following
Q31 Alkali metals can be used for all but one of the following
Q32 A consequence of ——- is the formation of a chelate ring
Q33 Which of these hydrides has the high boiling point?
Q34 Which of these metals is radioactive?
Q35 The most abundant metal in sea water is ——-
Q36 Which of these bonds has the weakest bond energy?
Q37 The attractive force which binds a hydrogen atom of one molecule with an electronegative atom of another molecule of the same compound is called———
Q38 Increase in principal quantum number(n) means—–of the atomic radii
Q39 Except for rubidium and caesium,
Q40 _____is defined as one-half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice
Q41 _____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.
Q42 The alkali metals belong to the —— elements
Q43 Which is of these peroids of the peroidic table has only eight elements?
Q44 Increase in principal quantum number(n) means—–of the atomic radii
Q45 In the equation for ionization,effective nuclear charge is represented as——
Q46 The ability of an element to participate in a chemical reaction is measured in form of its ———
Q47 ____is the energy released or absorbed when an electron is added to the gaseous atom in its ground state
Q48 Electron affinity can be affected by all but one of the following
Q49 Halogens have —— electron affinity
Q50 An orbital can have at the most two electrons of opposite spin can be called the ——-
Q51 In the mordern form of Mendeleev peroidic table, elements are arranged in ——–horizontal rows.
Q52 The positions of K and Ar,Co and Ni do not remain anomalous any longer since ——— is used in arranging the elements.
Q53 The properties of elements are periodic functions of their atomic numbers is the———–
Q54 What property was used by Mendeleev to classify the elements?
Q55 _________ used the Law of the Octave to arrange atoms
Q56 __________ arranged elements in order of increasing atomic weight on a line which spiraled around a cylinder from bottom to top
Q57 ________and____________ tried to classify elements into periods
Q58 _________is the tendency of an atom to attract towards itself the shared electron pair of a bond in which it is involved
Q59 The second ionization energy of alkaline earth metals is less than that of corresponding alkali metals because——–
Q60 ____________is the enthalpy change when one mole of crystal lattice is formed from the isolated gaseous ions
Q61 A hybrid orbitals that has greater s-character is more likely to possess �?��?�.
Q62 Which of these is an sp-hybridized compound?
Q63 The presence of hydrogen bond in most molecules is responsible for the following except;
Q64 Which of these is not a covalent hydride?
Q65 When alkali metals are heated with hydrogen they form——–hydrides
Q66 Hydrogen can be obtained economically as a bi-product in the electrolysis of ——
Q67 One of these elements behave partly as the alkaline metals as well as a halogen element;
Q68 The tendency of an atom to attract shared electron pair of bond towards itself is known as
Q69 Which of the following is not true as we move down a group of s and p-block elements in the periodic table
Q70 The energy required to remove two valency electrons of a metallic atom is called;
Q71 Which of these elements has the electonic configuration of 1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{1}
Q72 All common cations are smaller than all common anions except one of these;
Q73 One half of the distance between the nuclei of two atoms bonded together by a single bond is known as
Q74 one of the following is not a d-block element?
Q75 Which of these is not an s-block element
Q76 The energy absorbed or released when an electron is added to a gaseous atom is known as
Q77 One half of the distance between the nuclei of two adjacent metal atoms in a close crystal lattice is called�?�
Q78 One of the following scientists never made any contribution to the development of periodic table?
Q79 Which of these is not a property of metallic element?
Q80 Newlands law of octaves was rejected mainly because of;
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