-
question_answer1)
Which one of the following oxides is neutral [IIT-JEE 1996]
A)
CO done
clear
B)
\[Sn{{O}_{2}}\] done
clear
C)
ZnO done
clear
D)
\[Si{{O}_{2}}\] done
clear
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question_answer2)
All element in 3rd period have [JIPMER 1997]
A)
An atomic number 3 done
clear
B)
3 complete sub-shells done
clear
C)
Valence electrons shell done
clear
D)
3 electrons less than the octet done
clear
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question_answer3)
Which shows variable valency [RPMT 1997]
A)
s - block elements done
clear
B)
p - block elements done
clear
C)
d - block elements done
clear
D)
Radioactive elements done
clear
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question_answer4)
Most reducing agent is [UPSEAT 1999]
A)
K done
clear
B)
Mg done
clear
C)
Al done
clear
D)
Ba done
clear
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question_answer5)
Acidity of pentoxides in VA group [CPMT 1982]
A)
Decreases done
clear
B)
Increases done
clear
C)
Remains same done
clear
D)
None done
clear
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question_answer6)
If the valency shell electronic structure for an element is \[n{{s}^{2}}n{{p}^{5}}\], this element will belong to the group of [CBSE PMT 1992]
A)
Alkali metals done
clear
B)
Inert metals done
clear
C)
Noble gases done
clear
D)
Halogens done
clear
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question_answer7)
The order in which the following oxides are arranged according to decreasing basic nature is [CPMT 1985]
A)
\[N{{a}_{2}}O,\,MgO,\,A{{l}_{2}}{{O}_{3}},\,CuO\] done
clear
B)
\[MgO,\,A{{l}_{2}}{{O}_{3}},\,CuO,\,N{{a}_{2}}O\] done
clear
C)
\[A{{l}_{2}}{{O}_{3}},\,MgO,\,CuO,\,N{{a}_{2}}O\] done
clear
D)
\[CuO,\,N{{a}_{2}}O,\,MgO,\,A{{l}_{2}}{{O}_{3}}\] done
clear
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question_answer8)
Strongest reducing agent is [RPMT 1997]
A)
\[C{{l}_{2}}\] done
clear
B)
\[C{{l}^{-}}\] done
clear
C)
\[B{{r}^{-}}\] done
clear
D)
\[{{I}^{-}}\] done
clear
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question_answer9)
Metallic nature and basic nature of the oxides ........ as we move along a period
A)
Increases done
clear
B)
Decreases done
clear
C)
First increases then decreases done
clear
D)
Remains constant done
clear
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question_answer10)
The correct order of increasing order of oxidising power is [DCE 2000]
A)
\[{{F}_{2}}<C{{l}_{2}}<B{{r}_{2}}<{{I}_{2}}\] done
clear
B)
\[{{F}_{2}}<B{{r}_{2}}<C{{l}_{2}}<{{I}_{2}}\] done
clear
C)
\[C{{l}_{2}}<B{{r}_{2}}<{{F}_{2}}<{{I}_{2}}\] done
clear
D)
\[{{I}_{2}}<B{{r}_{2}}<C{{l}_{2}}<{{F}_{2}}\] done
clear
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question_answer11)
The most basic among these hydroxides, is [MP PMT 2003]
A)
\[Be\,{{(OH)}_{2}}\] done
clear
B)
\[Mg\,{{(OH)}_{2}}\] done
clear
C)
\[Ca\,{{(OH)}_{2}}\] done
clear
D)
\[Ba\,{{(OH)}_{2}}\] done
clear
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question_answer12)
In any period the valency of an element with respect to oxygen [Kerala (Med.) 2003]
A)
Increases one by one from IA to VIIA done
clear
B)
Decreases one by one form IA to VIIA done
clear
C)
Increases one by one from IA to IVA and then decreases from VA to VIIA one by one done
clear
D)
Decreases one by one from IA to IVA and then increases from VA to VIIA one by one done
clear
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question_answer13)
Which will show maximum non-metallic character [UPSEAT 2003]
A)
B done
clear
B)
Be done
clear
C)
Mg done
clear
D)
Al done
clear
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question_answer14)
Which of the following halogen acids is least acidic [RPET 2003]
A)
HI done
clear
B)
HCl done
clear
C)
HF done
clear
D)
HBr done
clear
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question_answer15)
Pentavalency in phosphorus is more stable when compared to that of nitrogen even through they belong to same group is due to [KCET 2002]
A)
Reactivity of phosphorus done
clear
B)
Inert nature of nitrogen done
clear
C)
Dissimilar electronic configuration done
clear
D)
Larger size of phosphorus atom done
clear
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question_answer16)
In the ground state of cobalt atom (Z = 27) there are ....... unpaired electrons and thus the atom is.......
A)
2, diamagnetic done
clear
B)
2, paramagnetic done
clear
C)
3, diamagnetic done
clear
D)
3, paramagnetic done
clear
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question_answer17)
Variable valency in general, is exhibited by [CPMT 1974, 84, 89; DPMT 1981, 82; MP PET 2001]
A)
Transition elements done
clear
B)
Gaseous elements done
clear
C)
Non-metals done
clear
D)
\[s\]-block elements done
clear
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question_answer18)
An element of atomic weight 40 has 2, 8, 8, 2 as the electronic configuration. Which one of the following statements regarding this element is not correct
A)
It belongs to II group of the periodic table done
clear
B)
It has 20 neutrons done
clear
C)
The formula of its oxide is \[M{{O}_{2}}\] done
clear
D)
It belongs to 4th period of the periodic table done
clear
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question_answer19)
Which of the following oxides is most basic [MP PET 1994]
A)
\[N{{a}_{2}}O\] done
clear
B)
\[A{{l}_{2}}{{O}_{3}}\] done
clear
C)
\[Si{{O}_{2}}\] done
clear
D)
\[S{{O}_{2}}\] done
clear
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question_answer20)
In the periodic table, the metallic character of elements [MP PET 1993]
A)
Decreases from left to right across a period and on descending a group done
clear
B)
Decreases from left to right across a period and increases on descending a group done
clear
C)
Increases from left to right across a period and on descending a group done
clear
D)
Increases from left to right across a period and decreases on descending a group done
clear
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question_answer21)
The halogen that most easily reduced is [MP PMT 2000]
A)
\[{{F}_{2}}\] done
clear
B)
\[C{{l}_{2}}\] done
clear
C)
\[B{{r}_{2}}\] done
clear
D)
\[{{I}_{2}}\] done
clear
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question_answer22)
Which of the following is the correct order of gradually decreasing basic nature of the oxides [MP PMT 1997]
A)
\[A{{l}_{2}}{{O}_{3}}\], \[MgO\], \[C{{l}_{2}}{{O}_{7}}\], \[S{{O}_{3}}\] done
clear
B)
\[MgO\], \[A{{l}_{2}}{{O}_{3}}\], \[S{{O}_{3}}\], \[C{{l}_{2}}{{O}_{7}}\] done
clear
C)
\[C{{l}_{2}}{{O}_{7}}\], \[S{{O}_{3}}\], \[A{{l}_{2}}{{O}_{3}}\], \[MgO\] done
clear
D)
\[S{{O}_{3}}\], \[C{{l}_{2}}{{O}_{7}}\], \[MgO\], \[A{{l}_{2}}{{O}_{3}}\] done
clear
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question_answer23)
The correct order of reactivity of halogen is [BHU 2000]
A)
Flourine > bromine > chlorine > iodine done
clear
B)
Flourine > chlorine > bromine > iodine done
clear
C)
Iodine > bromine > chlorine > flourine done
clear
D)
Bromine > chlorine > flourine > iodine done
clear
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question_answer24)
Elements A and B with their respective electronic configurations \[3{{d}^{10}}\,4{{s}^{1}}\] and \[4{{d}^{10}}\,5{{s}^{1}}\] in their outermost shell are
A)
Both non-metals done
clear
B)
Both coinage metals done
clear
C)
A is a non-metal and B is coinage metal done
clear
D)
A is a coinage metal and B is non-metal done
clear
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question_answer25)
Which is the best reducing agent [MP PET 2000]
A)
\[{{F}^{-}}\] done
clear
B)
\[C{{l}^{-}}\] done
clear
C)
\[B{{r}^{-}}\] done
clear
D)
\[{{I}^{-}}\] done
clear
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question_answer26)
Which of the following group of elements eliminates electron easily
A)
N, P, As done
clear
B)
O, S, Se done
clear
C)
Li, Na, K done
clear
D)
Cl, Ba, I done
clear
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question_answer27)
The maximum valency of an element with atomic number 7 is [AFMC 2002]
A)
2 done
clear
B)
5 done
clear
C)
4 done
clear
D)
3 done
clear
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question_answer28)
Which of the following metals exhibits more than one oxidation state [MP PET 1999]
A)
\[Na\] done
clear
B)
\[Mg\] done
clear
C)
\[Fe\] done
clear
D)
\[Al\] done
clear
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question_answer29)
Out of the following elements which one do you expect to be most reactive chemically [CPMT 1983]
A)
\[Mg\] done
clear
B)
\[Ca\] done
clear
C)
\[Sr\] done
clear
D)
\[Ba\] done
clear
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question_answer30)
Thalium shows different oxidation states because [AIIMS 1982]
A)
It is a transition element done
clear
B)
Of inert pair effect done
clear
C)
Of its amphoteric character done
clear
D)
Of its higher reactivity done
clear
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question_answer31)
Oxidising action increases in halogen in the following order [DPMT 1990]
A)
Cl < Br < I < F done
clear
B)
Cl < I < Br < F done
clear
C)
I < F < Cl < Br done
clear
D)
I < Br < Cl < F done
clear
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question_answer32)
Fluorine, chlorine, bromine and iodine are placed in the same group (17) of the periodic table, because [KCET (Med.) 1999]
A)
They are non-metals done
clear
B)
They are electronegative done
clear
C)
Their atoms are generally univalent done
clear
D)
They have 7 electrons in the outermost shell of their atom done
clear
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question_answer33)
Which of the following sequence correctly represents the decreasing acid nature of oxides [AMU 2000]
A)
\[L{{i}_{2}}O>BeO>{{B}_{2}}{{O}_{3}}>C{{O}_{2}}>{{N}_{2}}{{O}_{3}}\] done
clear
B)
\[{{N}_{2}}{{O}_{3}}>C{{O}_{2}}>{{B}_{2}}{{O}_{3}}>BeO>L{{i}_{2}}O\] done
clear
C)
\[C{{O}_{2}}>{{N}_{2}}{{O}_{3}}>{{B}_{2}}{{O}_{3}}>BeO>L{{i}_{2}}O\] done
clear
D)
\[{{B}_{2}}{{O}_{3}}>C{{O}_{2}}>{{N}_{2}}{{O}_{3}}>L{{i}_{2}}O>BeO\] done
clear
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question_answer34)
Which of the following aqueous acid is most acidic [AMU 2000]
A)
HCl done
clear
B)
HF done
clear
C)
HI done
clear
D)
HBr done
clear
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question_answer35)
The correct order of the increasing ionic character is [MP PET 2000]
A)
\[BeC{{l}_{2}}<MgC{{l}_{2}}<CaC{{l}_{2}}<BaC{{l}_{2}}\] done
clear
B)
\[BeC{{l}_{2}}<MgC{{l}_{2}}<BaC{{l}_{2}}>CaC{{l}_{2}}\] done
clear
C)
\[BeC{{l}_{2}}<BaC{{l}_{2}}<MgC{{l}_{2}}<CaC{{l}_{2}}\] done
clear
D)
\[BaC{{l}_{2}}<CaC{{l}_{2}}<MgC{{l}_{2}}<BeC{{l}_{2}}\] done
clear
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question_answer36)
Which of the following elements is found in native state [RPET 1999]
A)
Al done
clear
B)
Au done
clear
C)
Cu done
clear
D)
Na done
clear
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question_answer37)
The basis of keeping the elements in the group of a periodic table is [RPET 1999]
A)
Ionisation potential done
clear
B)
Electronegativity done
clear
C)
Electron affinity done
clear
D)
Number of electrons in the valence shell done
clear
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question_answer38)
Which of the following electronic configurations in the outermost shell is characteristic of alkali metals [Bihar CEE 1992]
A)
\[(n-1)\,{{s}^{2}}{{p}^{6}},\,n{{s}^{2}}{{p}^{1}}\] done
clear
B)
\[(n-1)\,{{s}^{2}}{{p}^{6}}{{d}^{10}},\,n{{s}^{1}}\] done
clear
C)
\[(n-1)\,{{s}^{2}}{{p}^{6}},\,n{{s}^{1}}\] done
clear
D)
\[n{{s}^{2}}{{p}^{6}}{{d}^{1}}\] done
clear
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question_answer39)
On moving down the group gradually increase
A)
Oxidising property done
clear
B)
Electronegativity done
clear
C)
Acidic property done
clear
D)
Metallic property done
clear
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question_answer40)
An ion which has 18 electrons in the outermost shell is
A)
\[{{K}^{+}}\] done
clear
B)
\[C{{a}^{2+}}\] done
clear
C)
\[N{{a}^{+}}\] done
clear
D)
\[C{{u}^{+}}\] done
clear
View Solution play_arrow
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question_answer41)
Increasing order of acid strength of halogen acid is [DCE 2000]
A)
\[HF<HCl<HBr<HI\] done
clear
B)
\[HCl<HBr<HI<HF\] done
clear
C)
\[HF<HI<HBr<HCl\] done
clear
D)
None of these done
clear
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question_answer42)
Which is the weakest base [KCET 1993]
A)
NaOH done
clear
B)
KOH done
clear
C)
\[Ca{{(OH)}_{2}}\] done
clear
D)
\[Zn{{(OH)}_{2}}\] done
clear
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question_answer43)
Which of the following elements shows maximum number of different oxidation states in its compounds [CBSE PMT 1998]
A)
\[Eu\] done
clear
B)
\[La\] done
clear
C)
\[Gd\] done
clear
D)
\[Am\] done
clear
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question_answer44)
The valency shell of calcium contains [JIPMER 2000]
A)
8 electrons done
clear
B)
6 electrons done
clear
C)
4 electrons done
clear
D)
2 electrons done
clear
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question_answer45)
3 and 6 electrons are present in the outermost orbit of A and B respectively. The chemical formula of its compound will be
A)
\[{{A}_{3}}{{B}_{2}}\] done
clear
B)
\[{{A}_{2}}{{B}_{3}}\] done
clear
C)
\[{{A}_{2}}B\] done
clear
D)
\[AB\] done
clear
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question_answer46)
Which of the following halogens doesn?t exhibit positive oxidation state in its compounds [MH CET 1999]
A)
Cl done
clear
B)
Br done
clear
C)
I done
clear
D)
F done
clear
View Solution play_arrow
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question_answer47)
The most basic element is [MP PET 2000; JIPMER 2000]
A)
Fluorine done
clear
B)
Iodine done
clear
C)
Chlorine done
clear
D)
Bromine done
clear
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question_answer48)
Which of the following set has the strongest tendency to form anions [AFMC 1999]
A)
Ga, In and Te done
clear
B)
Na, Mg and Al done
clear
C)
N, O and F done
clear
D)
V, Cr and Mn done
clear
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question_answer49)
An element X which occurs in the first short period has an outer electronic structure \[{{s}^{2}}{{p}^{1}}\]. What are the formula and acid-base character of its oxides [DCE 1999]
A)
\[X{{O}_{3}},\] basic done
clear
B)
\[{{X}_{2}}{{O}_{3}},\] basic done
clear
C)
\[{{X}_{2}}{{O}_{3}},\] amphoteric done
clear
D)
\[X{{O}_{2}},\] acidic done
clear
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question_answer50)
Which of the following gas does not have an octet or eight electrons in the outer shell [CBSE PMT 2001]
A)
Ne done
clear
B)
Ar done
clear
C)
Rn done
clear
D)
He done
clear
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question_answer51)
Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in [AIEEE 2004]
A)
Forming covalent halides done
clear
B)
Forming polymeric hydrides done
clear
C)
Exhibiting maximum covalency in compounds done
clear
D)
Exhibiting amphoteric nature in their oxides done
clear
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