1 - An element having low value of ionization energy and low value of electron affinity is likely to belong to
Group IA
2 - Which set of elements is listed in order of increasing ionization energy?
Sb < As < S < P < Cl
3 - Which of the following always increases on going from top to bottom in a group?
Metallic character
4 - Which of the p-block elements are not representative elements?
Group-18 elements (VIII-A)
5 - Among halogens the highest boiling point is of
Iodine
6 - Which of the following will not form crystalline structure with opporitely charged ions
H+
7 - Which statement is incorrect?
All the metals form acidic oxides
8 - Periodic table provides a basic framework to study elements with respect to their
All
9 - The scientist who did not contribute in the construction of periodic table?
Democritus
10 - Concept of Triads was introduced by
Dobereiner
11 - Which element was not known when Mendeleev proposed his classification?
Germanium
12 - Elements with similar chemical properties appear in the
Same family
13 - Noble gases are named so because they are
All
14 - In modern periodic table all the leements are arranged in ascending order of
Atomic number
15 - The longest period in the modern periodic table is
6th
16 - Inner transition elements are called
All
17 - Seventh period contains ______________ normal elements
2
18 - Modern periodic table has been divided in _______ blocks
4
19 - Non-metals usually form ______________ oxides
Acidic
20 - Amphoteric exides are those which possess ________ properties
Acidic and basic
21 - Best position of hydrogen in the periodic table is above I.A Group which is mainly due to
All
22 - Hydrogen resembles with carbon because of having
Remarkable reducing properties
23 - Which one of the following sets consists of all coinage metals?
Cu Ag Au
24 - In which of the following pairs are elements belonging to the same group?
Nitrogen & Phosphorous
25 - Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way?
Its number of isotopes
26 - Which one of the following is not a periodic property?
Coordination number of ions
27 - The atomic radii decreases by increasing atomic number in
Elements from Li to Ne
28 - Which discovery caused a revision in the periodic law as stated by Mendeleev?
Atomic number by Moseley
29 - An element has electronic conviguration 1s2 2s2 2p2. It belongs to
Group IV-A
30 - The property which increases upto group IV-A then decreases onwards
Melting & boiling points
31 - Which of the following ion is stable in aqueous solution?
Cl-
32 - The atoms of same element having same atomic number but different mass number are called
Isotopes
33 - Deuterium reacts with oxygen to form
Heavy water
34 - Which order of ionization energy is correct
Mg > A1
35 - Ionization energy depends upon
I.E depends upon all of the above and nature of orbital
36 - Shielding effect across the period
Remains constant
37 - Addition of 2nd electron to a uninegative ion is always
Endothermic
38 - Higher value of electron affinity means
Atom will gain electron easily
39 - Metallic characters of alkali metals
Increase down the group
40 - Melting points of VII-A group elements down the group
Increase
41 - Oxidation state of an atom represents
Apparent charge in compound
42 - Which of the following possesses maximum hydration energy?
Mg+2
43 - Halides in which halogen atoms act as a bridge between two atoms of the other element are called
Polymeric halides
44 - Iodine is solid due to
High polarizability
45 - True increasing order of acidity of the oxides of Mn is
MnO < MnO2 < Mn2O7
46 - Keeping in view the size of atom which order is correct one?
Ba > Mg
47 - Which one of the following element has highest exidation state in its compounds?
Mn
48 - Which of the following cannot exist in solution
O-2
49 - The word Alkali means
Ashes
50 - Formula of Chile saltpetre is
NaNO3
51 - The oxides of beryllium BeO is
Amphoteric
52 - Which element is necessary for normal leaf development?
Ca
53 - Li is different from its family members due to
all of the above
54 - Carbonates of lithium are not stable like that of sodium due to
Low electropositivity
55 - Nitrates of which pair of elements give different products on thermal decomposition?
Li Na
56 - Which one of the following is not an alkali metal?
Radium
57 - Which of the following sulphates is not soluble in water?
Barium sulphate
58 - The element cesium bears resemblance with
None of the above
59 - The ore CaSO4.H2O has the general name
Gypsum
60 - Downs cell is used to prepare
Sodium metal
61 - Ammonia may be prepared by heating ammonium chloride with
Aqueous sodium hydroxide
62 - Calcium carbide is prepared by heating lime with coke at
2800Degree Centigrade
63 - Crystals of Na2CO3. 10H2O when exposed to air
Lose water and remain solid
64 - Which one of the following substances conducts electricity by the movement of ions?
Molten sodium chloride
65 - Which one of the following carbonate is water insoluble?
CaCO3
66 - The deliquescence is a property in which a solid
Absorbs moisture and turns to liquid form
67 - In diaphragm cell hydrogen is discharged by the reduction of
Water
68 - In diaphragm cell level of brine in anode compartment is kept slightly higher which prevents
Hydroxide ions to reach anode
69 - Gypsum is applied to the soil as a source of
Ca and S
70 - Alkali and alkaline earth metals impart colours when heated over burner. It is due to
De-excitation of electrons from higher energy levels to low energy level
71 - Which one of the following alkali metals forms only normal oxide when it reacts with O2?
Lithium
72 - First ionization potential of alkaline earth metal is greater than alkali metals because
They have smaller atomic sizes
73 - Which one of the following pairs shown diagonal relationship in the periodic table?
Lithium and magnesium
74 - NaOH is named as caustic soda because
It corrodes the organic tissues
75 - Sodium is not observed in +2 oxidation state because of its
high second ioniation potential
76 - Carnalite has chemical formula
KCI.MgCl2.6H2O
77 - Magnesium metal does not burn in the vessel containing
Ne
78 - Electrolysis of dilute solution of NaCl results at the anode
oxygen
79 - Second ionization potential of alkali metals are very high due to
inert gas configurations
80 - Which ion will have maximum value of heat of hydration?
A1+3
81 - Which one can form complex?
Li
82 - Which one is natron?
Na2CO3.H2O
83 - Addition of 2% gypsum in cement
Prevents rapid hardening
84 - Which one is least ionic in nature and decompose on heating.
LiOH
85 - Boron is non-netal whereas A1 is metal. It is due to
Both a and b
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