Periodic Classification of Elements MCQs second year MCQs
1.
The first comprehensive scheme for the
classification of elements was given by
a.
Al-Razi b.
Dobereiner c. Newlands
d.
Mendelecve
2.
f-block elements are also called as:
a.
Inner transition elements b.
Lanthanides and Actinides
c.
Rare Earth elements d.
All of these
3.
Third period in the modern periodic table
contains how many transition elements?
a.
2 b.
8 c.
10 d. None
4.
Which one of the followings is a greatest block
of the periodic table?
a.
S-block b. P-block c.
d-block d. f-block
5.
Which one of the followings substance conduct
electricity by the movement of ions?
a.
Graphite b. Copper c.
Mercury d.
Fused NaCl
6.
Elements belonging to the same period have
a.
Same chemical properties b.
Same no. of es in the valence
shell
c.
Same no. of total shells d.
All of these
7.
Which one of the following sets consists of all
coinage Metals?
a.
Cu, Hg, Au b. Cu, Ag, Hg c. Cu, Ag, Au d.
All of these
8.
All are isoelectronic species except
a.
N–3 / O–2 b. Ne
/ F–1 c. Na+ / Al3+ d. Na+
/ K+
9.
Which one of the following families contains
monoatomic molecules?
a.
Halogens b. Alkali
Metals c. Rare gases d. Coinage
Metals
10.
Which of the following statements is incorrect?
a.
All the metals are good conductor of
electricity
b.
All the metals are good conductor of Heat
c.
All the metals from +ve ions d. All the metals from acidic oxide 11. Lanthanides and Actinides belongs to
which group?
a.
IA b. IB
c.
III B d. None
12.
Which one of the following elements will form
polymeric halides?
a.
Na, Ba b. C,
Si c.
Be, Al d.
Cu, Ag
13.
Which one of the following oxide is more acidic?
a.
Na2O
b. Al2O3 c. P4O10 d.
Cl2 O7
14.
Elements of Group IB are called as
a.
Alkali metals
b.
Coinage metals
c.
Noble metals d.
Alkaline earth metals
15.
Which one of the following has lowest heat of
hydration?
a.
L1+ b. K+
c.
Ca2+ d.
Ba2+
16.
Which element has the highest M.P and B.P?
a.
Na b.
Mg c. Carbon d.
Boron
17.
A covalent bond is unlikely exist in which of
the following substance
a.
Si F4 b. CaO c. SeH2 d.
Br2
18.
Best position of hydrogen in periodic table is
above group IA which is mainly due to
a.
Similar electronic b.
Configuration
c.
Both are not found in free state
electro positive d. All
of these
19.
Higher electron affinity means,
a.
Atom will loose electron easily b. Atom
will gain electron easily
c. Atom
may form di-positive ion d.
None of these
20.
Melting points of halogens
a.
Decreases, down the group b. Increase, down the group
c. Remains same
throughout the group d. First increased
then decreases down the group 21. Which
one of the followings element has greatest 1st ionization
energy?
a.
Li b. Be
c.
F d.
Ne
22.
Seventh period contains how many normal
elements?
a.
2 b.
4 c.
6 d.
8
23.
Which of the following pair of elements belongs
to the same group?
a.
B & Be b.
N & P c.
Mg & Al d. Ga
& He
24.
Which one of the following group of elements has
the lowest ionization energies?
a.
VIII-A b. VII-A c.
I-A d. II-A
25.
Which one is the most basic oxide?
a.
Na2O
b. BeO
c.
CaO d.
Li2 O
26.
Which one of the following oxide is ampho-teric
in Nature?
a.
Be O b. Bi2
O3 c. Al2
O3 d. All
of these
27.
Which one of the following oxides is more acidic
in nature
a.
Mn O b. Mn2
O3 c. Mn O2 d.
Mn2 O7
28.
The ability of transition metal oxides increases
with
a.
Decreasing oxidation state b.
Increasing oxidation state
c.
Increasing atomic size d.
Decreasing electro negativity
29.
The Second and Third electron affinities are
endothermic process due to
a.
Increase in atomic size b.
Increase in electro
negativity
c.
Repulsion due to –ve ion
present d.
Attraction of incoming es by
Nucleous
30.
The only hydride of group VI A that has its
boiling point in +ve is
a.
H2S b.
H2 Se c.
H2 Te d.
H2O
31.
Which one of the following is considered as
index of metallic and non-metallic character
a.
Heat of hydration b.
Ionization energy
c.
Electron affinity d.
All of these
32.
Which one of the following properties is an
index of strength of Binding forces of a substances
a.
Oxidation state
b.
1 m P and b P
c.
Ionization energy d.
Electron affinity
33.
Which one of the following is not an element of
P-block?
a.
Al b.
Bi c. As d.
He
34.
Make the correct statement
a.
Elements just below the steps are metalloids
b.
Elements at top right corner of the
stopped line one non-metals
c.
All the elements except H2 at the left corner of
stepped line are metals d. None of
them
35.
Which one of following pair of elements show
diagonal relationship
a.
Li b.
Be and Al c. Both a and
b d.
None of them
36.
The group no of an element represents
a.
Total ns of shells in it b.
Total ns of valence
c.
Its atomic mass d.
All of these
37.
Which one of the following Halides is an ionic
compound?
a.
PbCl4 b. PbCl2 c. Si Cl4 d.
PCl3
38.
Which one of the following species is
isoelectronic with Ca2+?
a.
Na b.
Sr2+ c. Ar d.
Ba2+
39.
Which one of the followings is most stable
hydride
a.
CH4 b.
NH3 c. PH3
d.
HF
40.
The elements of group A in modern periodic table
are
a.
Transition elements b.
Representative elements
c.
Alkaline earth metals d.
Rare earth elements
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