CHAPTER NO.6 SOLIDS

CHAPTER NO.6 SOLIDS

1.	Which type of motion are present in solids a. Translational b. Rotational c. Vibrational d. All of these	C
2.	The property of solids responsible for their rigid and definite shape is their …. a. High density b. Strong intermolecular forces c. Anisotropy d. Low rate of diffusion	B
3.	Solid particles do not diffuse into each other, it is due to a. Little empty space b. Lack of translator motion c. No intermolecular forces d. sNon of these	A
4.	Amorphous means a. Without any specific shape b. Without any faces Without translational temperature Without motions	A
5.	A cubic crystal has … center of symmetry a. 1 b. 2 c. 3 d. 4	A
6.	A crystal conducts heat and electricity with different magnitude in different direction. This property of crystal is called a. Allotropy b. Anisotropy c. Isotropy d. polymorphism	B
7.	The geometry of NaCl is …… a. simple cubic b. body center cubic c. face center cubic d. hexagonal	C
8.	which one of the following have low melting a. a. point a. ionic crystal b. covalent crystal c. metallic crystal d. molecular crystal	D
9.	which one of the following is used for the treatment of goiter a. solid iodine b. table salt cane sugar all of these	A
10.	which one of the following is not amorphous  solid a. glass b. plastic rubber non of these	D
11.	which one of the following is not crystalline solid a. NaCl b. CaCO3 c. CaO d. gemstone	D
12.	which one of the following has more than value of one a. plane of symmetry b. axis of symmetry c. center of symmetry d. both a and b	D
13.	….% urea in the solution, as an impurity, compels it to grow in one dimension a. 10 b. 20 c. 30 d. 40	A
14.	Anisotropy refers to not same transfer of a. Thermal conductivity b. Coefficient of thermal expansion c. Heat transfer d. All of these	D
15.	The structure of NaCl and MgO is a. Cubic b. Rhombohedral c. Hexagonal c.  Non of these d. molecular crystal	A
16.	The structure of KNO3 and NaNO3 is a. Cubic b. Rhombohedral c. Hexagonal d. Non of these	B
17.	The structure of ZnO and CdS is a. Cubic b. Rhombohedral c. Hexagonal d. Non of these	C
18.	The structure of KNO3 and CaCO3 is a. Cubic b. Rhombohedral c. Hexagonal d. Non of these	B
19.	For isomorph a. Same physical properties b. Same chemical properties c. Different physical and chemical properties d. Same chemical but different physical properties	C
20.	For polymorphs a. Same physical properties b. Same chemical properties c. Different physical and chemical properties	D
21.	Same chemical but different physical properties The crystalline form of KNO3 is a. Rhombohedral and orthorhombic b. Triognal and orhtohombic c. Rhombohedral d. Trignol only	A
22.	The crystalline form of CaCO3 is a. Rhombohedral and orthorhombic b. Triognal and orthorhombic c. Rhombohedral d. Trignol only	B
23.	There are three allotropic form of a. Sulphur b. Tin c.Oxygen d. carbon	D
24.	the transition temperature for KNO3 is a. 95.5 0C b. 13.2 0C c. 128.5 0C d. 50 0C	C
25.	Which one of the following is ductile and malleable  a. ionic crystal b. covalent crystal c. metallic crystal	C