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question_answer1)
The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them [AIIMS 1991]
A)
Gases and liquids have viscosity as a common property done
clear
B)
The molecules in all the three states possess random translational motion done
clear
C)
Gases cannot be converted into solids without passing through the liquid phase done
clear
D)
Solids and liquids have vapour pressure as a common property done
clear
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question_answer2)
A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely disappears. This behaviour is the characteristic of substances forming [BHU 2000]
A)
Isomeric crystals done
clear
B)
Liquid crystals done
clear
C)
Isomorphous crystals done
clear
D)
Allotropic crystals done
clear
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question_answer3)
Which of the following is ferroelectric compound [AFMC 1997]
A)
\[BaTi{{O}_{3}}\] done
clear
B)
\[{{K}_{4}}\,[Fe{{(CN)}_{6}}]\] done
clear
C)
\[P{{b}_{2}}{{O}_{3}}\] done
clear
D)
\[PbZr{{O}_{3}}\] done
clear
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question_answer4)
Solid \[C{{O}_{2}}\] is an example of
A)
Molecular crystal done
clear
B)
Ionic crystal done
clear
C)
Covalent crystal done
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D)
Metallic crystal done
clear
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question_answer5)
Value of heat of fusion of \[NaCl\] is
A)
Very low done
clear
B)
Very high done
clear
C)
Not very low and not very high done
clear
D)
None of the above done
clear
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question_answer6)
Piezoelectric crystals are used in
A)
TV done
clear
B)
Radio done
clear
C)
Record player done
clear
D)
Freeze done
clear
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question_answer7)
Which of the following is true for diamond [AFMC 1997]
A)
Diamond is a good conductor of electricity done
clear
B)
Diamond is soft done
clear
C)
Diamond is a bad conductor of heat done
clear
D)
Diamond is made up of \[C,\,\,H\]and \[O\] done
clear
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question_answer8)
\[NaCl\] is an example of
A)
Covalent solid done
clear
B)
Ionic solid done
clear
C)
Molecular solid done
clear
D)
Metallic solid done
clear
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question_answer9)
Amorphous substances show A Short and long range order B Short range order C Long range order D Have no sharp M.P.
A)
A and C are correct done
clear
B)
B and C are correct done
clear
C)
C and D are correct done
clear
D)
B and D are correct done
clear
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question_answer10)
The characteristic features of solids are [AMU 1994]
A)
Definite shape done
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B)
Definite size done
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C)
Definite shape and size done
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D)
Definite shape, size and rigidity done
clear
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question_answer11)
Which one of the following is a good conductor of electricity [MP PMT 1994; AFMC 2002]
A)
Diamond done
clear
B)
Graphite done
clear
C)
Silicon done
clear
D)
Amorphous carbon done
clear
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question_answer12)
A crystalline solid [Kerala CET (Med.) 2003]
A)
Changes abruptly from solid to liquid when heated done
clear
B)
Has no definite melting point done
clear
C)
Undergoes deformation of its geometry easily done
clear
D)
Has an irregular 3-dimensional arrangements done
clear
E)
Softens slowly done
clear
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question_answer13)
Diamond is an example of [MP PET/PMT 1998; CET Pune 1998]
A)
Solid with hydrogen bonding done
clear
B)
Electrovalent solid done
clear
C)
Covalent solid done
clear
D)
Glass done
clear
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question_answer14)
The solid \[NaCl\] is a bad conductor of electricity since [AIIMS 1980]
A)
In solid \[NaCl\] there are no ions done
clear
B)
Solid \[NaCl\] is covalent done
clear
C)
In solid \[NaCl\] there is no velocity of ions done
clear
D)
In solid \[NaCl\] there are no electrons done
clear
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question_answer15)
The existence of a substance in more than one solid modifications is known as or Any compound having more than two crystal structures is called [MP PMT 1993; MP PET 1999]
A)
Polymorphism done
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B)
Isomorphism done
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C)
Allotropy done
clear
D)
Enantiomorphism done
clear
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question_answer16)
Which is not a property of solids [MP PET 1995]
A)
Solids are always crystalline in nature done
clear
B)
Solids have high density and low compressibility done
clear
C)
The diffusion of solids is very slow done
clear
D)
Solids have definite volume done
clear
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question_answer17)
Which solid will have the weakest intermolecular forces
A)
Ice done
clear
B)
Phosphorus done
clear
C)
Naphthalene done
clear
D)
Sodium fluoride done
clear
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question_answer18)
Dulong and Petit?s law is valid only for [KCET 2004]
A)
Metals done
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B)
Non-metals done
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C)
Gaseous elements done
clear
D)
Solid elements done
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question_answer19)
Which of the following is an example of metallic crystal solid
A)
\[C\] done
clear
B)
\[Si\] done
clear
C)
\[W\] done
clear
D)
\[AgCl\] done
clear
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question_answer20)
Under which category iodine crystals are placed among the following
A)
Ionic crystal done
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B)
Metallic crystal done
clear
C)
Molecular crystal done
clear
D)
Covalent crystal done
clear
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question_answer21)
Among solids the highest melting point is established by [Kerala CET (Med.) 2002]
A)
Covalent solids done
clear
B)
Ionic solids done
clear
C)
Pseudo solids done
clear
D)
Molecular solids done
clear
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question_answer22)
To get a n- type semiconductor, the impurity to be added to silicon should have which of the following number of valence electrons [KCET (Engg.) 2001]
A)
1 done
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B)
2 done
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C)
3 done
clear
D)
5 done
clear
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question_answer23)
Which of the following is non-crystalline solid
A)
\[CsCl\] done
clear
B)
\[NaCl\] done
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C)
\[Ca{{F}_{2}}\] done
clear
D)
Glass done
clear
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question_answer24)
The lustre of a metal is due to [AFMC 1998]
A)
Its high density done
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B)
Its high polishing done
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C)
Its chemical inertness done
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D)
Presence of free electrons done
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question_answer25)
A crystalline solid have [DCE 2001]
A)
Long range order done
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B)
Short range order done
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C)
Disordered arrangement done
clear
D)
None of these done
clear
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question_answer26)
Crystalline solids are [Pb. PMT 1999]
A)
Glass done
clear
B)
Rubber done
clear
C)
Plastic done
clear
D)
Sugar done
clear
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question_answer27)
Davy and Faraday proved that [Kerala CET (Med.) 2002]
A)
Diamond is a form of carbon done
clear
B)
The bond lengths of carbon containing compounds are always equal done
clear
C)
The strength of graphite is minimum compared to platinum done
clear
D)
Graphite is very hard done
clear
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question_answer28)
Which one of the following metal oxides is antiferromagnetic in nature [MP PET 2002]
A)
\[Mn{{O}_{2}}\] done
clear
B)
\[Ti{{O}_{2}}\] done
clear
C)
\[V{{O}_{2}}\] done
clear
D)
\[Cr{{O}_{2}}\] done
clear
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question_answer29)
In graphite, carbon atoms are joined together due to [AFMC 2002]
A)
Ionic bonding done
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B)
Vander Waal?s forces done
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C)
Metallic bonding done
clear
D)
Covalent bonding done
clear
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question_answer30)
Which of the following is not correct for ionic crystals [Orissa JEE 2002]
A)
They possess high melting point and boiling point done
clear
B)
All are electrolyte done
clear
C)
Exhibit the property of isomorphism done
clear
D)
Exhibit directional properties of the bond done
clear
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question_answer31)
Which of the following is a molecular crystal
A)
\[SiC\] done
clear
B)
\[NaCl\] done
clear
C)
Graphite done
clear
D)
Ice done
clear
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question_answer32)
Quartz is a crystalline variety of [Pb. PMT 2000]
A)
Silica done
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B)
Sodium silicate done
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C)
Silicon carbide done
clear
D)
Silicon done
clear
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question_answer33)
Which type of solid crystals will conduct heat and electricity [RPET 2000]
A)
Ionic done
clear
B)
Covalent done
clear
C)
Metallic done
clear
D)
Molecular done
clear
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question_answer34)
Which of the following is an example of covalent crystal solid
A)
\[Si\] done
clear
B)
\[NaF\] done
clear
C)
\[Al\] done
clear
D)
\[Ar\] done
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question_answer35)
Which of the following is an example of ionic crystal solid
A)
Diamond done
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B)
\[LiF\] done
clear
C)
\[Li\] done
clear
D)
Silicon done
clear
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question_answer36)
Which one is an example of amorphous solid
A)
Glass done
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B)
Salt done
clear
C)
Cesium chloride done
clear
D)
Calcium fluoride done
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question_answer37)
Silicon is [MHCET 2004]
A)
Semiconductor done
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B)
Insulator done
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C)
Conductor done
clear
D)
None of these done
clear
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question_answer38)
Which of the following statements about amorphous solids is incorrect [KCET 2004]
A)
They melt over a range of temperature done
clear
B)
They are anisotropic done
clear
C)
There is no orderly arrangement of particles done
clear
D)
They are rigid and incompressible done
clear
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question_answer39)
The ability of a given substance to assume two or more crystalline structure is called [DCE 2004]
A)
Amorphism done
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B)
Isomorphism done
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C)
Polymorphism done
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D)
Isomerism done
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question_answer40)
Glass is
A)
Supercooled liquid done
clear
B)
Crystalline solid done
clear
C)
Amorphous solid done
clear
D)
Liquid crystal done
clear
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