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question_answer1)
The early attempt to classify elements as metals and non-metals was made by
A)
Mendeleev done
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B)
Lother Meyer done
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C)
Lavoisier done
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D)
Henry Moseley done
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question_answer2)
Newlands could classify elements only up to
A)
copper done
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B)
chlorine done
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C)
calcium done
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D)
chromium done
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question_answer3)
Mendeleev classified elements in
A)
increasing order of atomic groups done
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B)
eight periods and eight groups done
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C)
seven periods and eight groups done
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D)
eight periods and seven groups done
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question_answer4)
The long form of periodic table consists of
A)
seven periods and eight groups done
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B)
seven periods and eighteen groups done
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C)
eight periods and eighteen groups done
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D)
eighteen periods and eight groups done
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question_answer5)
All the members in a group in long form of periodic table have the same
A)
valence done
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B)
number of valence electrons done
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C)
chemical properties done
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D)
All of these done
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question_answer6)
Which of the following properties generally decrease along a period?
A)
Atomic size done
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B)
Non-metallic character done
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C)
Metallic character done
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D)
Both [a] and [c] done
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question_answer7)
An element 'M' has an atomic number 9 and its atomic mass 19. The ion of M will be represented by
A)
M done
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B)
\[{{M}^{2+}}\] done
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C)
\[{{M}^{-}}\] done
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D)
\[{{M}^{2-}}\] done
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question_answer8)
The element with smallest size in group 13 is
A)
beryllium done
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B)
carbon done
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C)
aluminium done
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D)
boron done
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question_answer9)
The elements with atomic numbers 2, 10, 18, 36, 54 and 86 are all
A)
halogen done
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B)
noble gases done
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C)
noble metals done
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D)
light metals done
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question_answer10)
The number of elements in the third period of periodic table is
A)
2 done
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B)
8 done
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C)
18 done
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D)
32 done
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question_answer11)
Which of these choices is not a family of elements?
A)
Halogens done
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B)
Metals done
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C)
Inert gases done
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D)
All of these done
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question_answer12)
The element which has least tendency to lose electron is
A)
H done
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B)
Li done
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C)
He done
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D)
Na done
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question_answer13)
The most metallic element in the fourth period is
A)
Ca done
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B)
K done
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C)
S done
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D)
P done
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question_answer14)
The elements of group sixteen are called
A)
halogens done
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B)
chalcogens done
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C)
pnicogens done
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D)
noble gases done
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question_answer15)
Which of the following is correct set of Dobereiner Triads?
A)
Na, Si, Cl done
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B)
Be, Mg, Ca done
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C)
F, Cl, I done
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D)
Li, Na, Be done
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question_answer16)
The metal which is hard and has high m. p. and used in electric bulbs is
A)
Ni done
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B)
Pt done
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C)
Fe done
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D)
W done
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question_answer17)
The lightest liquid metal is
A)
Hg done
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B)
Ga done
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C)
Cs done
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D)
Fr done
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question_answer18)
Which is not true about noble gases?
A)
They are non-metallic in nature done
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B)
They exist in atomic form done
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C)
They are radioactive in nature done
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D)
Xenon is the most reactive among them done
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question_answer19)
Elements of which group form anions most readily?
A)
Oxygen family done
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B)
Nitrogen family done
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C)
Halogens done
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D)
Alkali metals done
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question_answer20)
On moving horizontally across a period, the number of electrons in the outermost shell increases from...... to........
A)
2, 8 done
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B)
2, 18 done
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C)
1, 8 done
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D)
1, 18 done
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question_answer21)
Which of the following is not a representative element?
A)
Fe done
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B)
K done
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C)
Ba done
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D)
N done
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question_answer22)
The scientist who made maximum contribution towards periodic table was
A)
Chadwick done
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B)
Rutherford done
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C)
Dalton done
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D)
Mendeleev done
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question_answer23)
Which of the following elements A, B, C, D and E with atomic number 3, 11, 15, 18 and 19 respectively belong to the same group?
A)
A, B, C done
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B)
B, C, D done
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C)
A, D, E done
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D)
A, B, E done
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question_answer24)
Element A belongs to Group VII in p-block and element B belongs to Group I in s-block of the periodic table. Out of the following assumptions, the correct one is :
A)
A and B are metals done
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B)
A and B are non-metals done
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C)
A is a metal and B is a non-metal done
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D)
A is a non-metal and B is a metal done
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question_answer25)
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
A)
Metal done
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B)
Metalloid done
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C)
Non-metal done
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D)
Left-hand side element done
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question_answer26)
Which of the following properties do not match elements of halogen family?
A)
They have seven electrons in their valence shell done
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B)
They are diatomic in their molecular form done
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C)
They are highly reactive chemically done
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D)
They are metallic in nature done
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question_answer27)
Which fact is not valid for Dobereiner's triads?
A)
The atomic weight of middle element is roughly average of the other two elements done
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B)
The properties of middle element is roughly average of the other two elements done
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C)
The elements of triads belong to the same group of modem periodic table done
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D)
The elements of triads have same valency electrons. done
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question_answer28)
Which of the following statements is incorrect from the point of view of modern periodic table?
A)
Elements are arranged in the order of increasing atomic number done
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B)
There are eighteen vertical columns called groups done
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C)
Transition elements fit in the middle of long periods done
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D)
Noble gases are arbitrarily placed in eighteenth group done
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question_answer29)
Which of the following group of elements belongs to alkali metals?
A)
1, 12, 30, 4, 62 done
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B)
37, 19, 3, 55 done
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C)
9, 17, 35, 53 done
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D)
12, 20, 56, 88 done
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question_answer30)
Which of the following elements will form acidic oxide?
A)
Sodium done
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B)
Magnesium done
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C)
Aluminium done
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D)
Sulphur done
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question_answer31)
Which one of the following is most electropositive element?
A)
Sodium done
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B)
Calcium done
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C)
Aluminium done
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D)
Silicon done
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question_answer32)
The atomic number of an element tells you the number of ................ in a neutral atom.
A)
positrons done
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B)
neutrons done
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C)
electrons done
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D)
All of these done
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question_answer33)
As you move down the group, the alkali metals become
A)
brighter done
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B)
hotter done
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C)
more reactive done
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D)
less reactive done
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question_answer34)
Which is a metalloid?
A)
Pb done
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B)
Sb done
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C)
B done
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D)
Zn done
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question_answer35)
Which one of the following elements exhibit maximum number of valence electrons?
A)
Na done
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B)
Al done
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C)
Si done
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D)
P done
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question_answer36)
Which of the following elements does not lose an electron easily?
A)
Na done
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B)
F done
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C)
Mg done
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D)
Al done
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question_answer37)
To which block is related an element having electronic configuration \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}4{{s}^{1}}\] in the periodic table-
A)
s-block done
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B)
p-block done
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C)
d-block done
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D)
f-block done
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question_answer38)
If the valene shell electronic configuration for an element is \[n{{s}^{2}}n{{p}^{5}}\], this element will belong to the group of-
A)
alkali metals done
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B)
inert metals done
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C)
noble gases done
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D)
halogens done
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question_answer39)
Which shows variable valency -
A)
s-block elements done
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B)
p-block elements done
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C)
d-block elements done
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D)
Radioactive elements done
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question_answer40)
The noble gases are unreactive because
A)
they react with sodium done
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B)
they have a full outer shell of electrons done
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C)
they have a half outer shell of neutrons done
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D)
they are too thin done
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question_answer41)
Which scientist came up with the concept of a periodic table that included all of the known elements?
A)
Joseph Priestly done
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B)
Dmitri Mendeleev done
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C)
Antoine Lavoisier done
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D)
Albert Einstein done
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question_answer42)
If the two members of a Dobereiner triad are phosphorus and antimony, the third member of this triad is -
A)
arsenic done
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B)
sulphur done
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C)
iodine done
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D)
calcium done
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