M.C.Qs on Solid State ............. Unit # 4

Unit # 4…….. M.C.Qs  on Solid State

1.  These are the solids in which three dimensional arrangement of molecules, atoms or ions is characteristic, regular and repetitive having characteristic geometrical shape:

(a)	Amorphous solids	(b)	Crystalline solids
(c)	Metallic solids	(d)	All of the above

2.  These are the solids in which three dimensional arrangement of molecules, atoms or ions is random and non-repetitive having no characteristic geometrical shape:

(a)	Amorphous solids	(b)	Crystalline solids
(c)	Metallic solids	(d)	All of the above

3.  The breakage of big crystal into smaller crystals of identical shape is called:

(a)	Crystallization	(b)	Anisotropy
(c)	Cleavage	(d)	Allotropy

4. The variation of certain physical properties in different directions is called:

(a)	Crystallization	(b)	Anisotropy
(c)	Cleavage	(d)	Allotropy

5. The existence of two different substances in the same crystalline form is called:

(a)	Polymorphism	(b)	Isomorphism
(c)	Isotrophism	(d)	Isotopy

6. Two different substances which have the same crystalline form are called:

(a)	Isomorphous	(b)	Polymorphous
(c)	Allotropes	(d)	Isotopes

7.    The existence of a substance in more than one crystalline forms under different conditions is called:

(a)	Isomorphous	(b)	Polymorphous
(c)	Allotropes	(d)	Isotopes

8.      A single substance that crystallizes in two or more different forms under different conditions is said to be:

(a)	Isomorphous	(b)	Polymorphous
(c)	Allotropes	(d)	Isotropic

9.      The existence of an element in more than one crystalline forms is called:

(a)	Crystallization	(b)	Anisotropy
(c)	Cleavage	(d)	Allotropy

10. The different crystalline forms of the same element are called:

(a)	Isomorphous	(b)	Polymorphous
(c)	Allotropes	(d)	Isotropic

11.  Which one of the following does not have same chemical properties?

(a)	Isomorphs	(b)	Polymorphs
(c)	Allotropes	(d)	Isotopes

12.    Which element does not show allotropy?

(a)	Carbon	(b)	Sulphur
(c)	Nitrogen	(d)	Oxygen

13.    In case of element, the polymorphic forms are called?

(a)	Isomorphs	(b)	Isomers
(c)	Allotropes	(d)	Isotopic forms

14.  The temperature at which two crystalline forms of the same substance can co-exist in equilibrium with each other is called?

(a)	Standard temperature	(b)	Equilibrium temperature
(c)	Transition temperature	(d)	Absolute temperature

15.    Which one is an amorphous solid?

(a)	Glass	(b)	Rubber
(c)	Plastic	(d)	All of them

16.    Which one of the following is a super-cooled liquid?

(a)	Glass	(b)	Ice
(c)	Dry ice	(d)	None of the above

17.    Which one of the following does not have cubic crystal?

(a)	Graphite	(b)	Diamond
(c)	NaCl	(d)	NaF

18.    Which one of the following has hexagonal crystal?

(a)	Graphite	(b)	Diamond
(c)	NaCl	(d)	NaF

19.    The crystals in which molecules are held together by van der Waal’s forces are called:

(a)	Ionic crystals	(b)	Molecular crystals
(c)	Metallic crystals	(d)	All of the above

20.    Which one is not an example of molecular crystals?

(a)	Ice	(b)	Dry ice
(c)	NaCl	(d)	Iodine

21.   The crystals in which non-metallic atoms are held together in a network b single covalent bonds are called:

(a)	Ionic crystals	(b)	Molecular crystals
(c)	Metallic crystals	(d)	Covalent crystals

22.    Which one is an example of covalent crystals?

(a)	Diamond	(b)	Dry ice
(c)	Silver	(d)	NaCl

23.    Which one is an example of metallic crystals?

(a)	Diamond	(b)	Dry ice
(c)	Copper	(d)	NaCl

24.    Which one is an example of ionic crystals?

(a)	Graphite	(b)	Dry ice
(c)	KCl	(d)	Iodine

25.    Which of the following is correct?

(a)	NaF and MgO are isomorphous having cubic structure.
(b)	NaNO3 and CaCO3 are isomorphous having trigonal crystal.
(c)	ZnSO4 and NiSO4 are isomorphous having orthorhombic crystal.
(d)	All of the above.