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1.Amorphous substances posses
A. No definite geometry
B. No definite heat of fusion
C. No sharp melting points
D. No definite geometry
2.Crystalline solids can be identified easily from their
A. Sharp melting point
B. Definite geometry
C. Transition temperature
D. Sharp melting point
3.Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to
A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. More strength of H-bonding
4.Ice is ___________ crystal
A. Metallic
B. Molecular
C. Covalent
D. Metallic
5.Select a pair of compounds which are isomorphic in nature.
A. NaCI and KNO3
B. MgO and NaF
C. KNO3 and MgO
D. NaCI and KNO3
6.The viscosity of solids is
A. Infinite
B. Negligible
C. Medium
D. Infinite
7.a=b=c, ?=?=?=90� is a representation of crystal system
A. Monoclinic
B. Triclinic
C. Hexagonal
D. Monoclinic
8.The phenomenon in which a compound exists in two or more crystalline forms is called
A. Isomorphism
B. Polymorphism
C. Anisotropy
D. Isomorphism
9.Which solids are called true solids?
A. Metallic
B. Amorphous
C. Crystalline
D. Metallic
10.Buckyballs is an allotropic form of
A. Sulphur
B. Carbon
C. Silica
D. Sulphur
11.The number amino acid units for each turn of the helix on average are
A. 21
B. 23
C. 25
D. 21
12.Isomorphic substances have
A. Same physical and chemical properties
B. Same physical and different chemical properties
C. Different physical and same chemical properties
D. Same physical and chemical properties
13.If a physical and chemical change takes place at a constant pressure then the heat change during the process is called
A. Heat of transition
B. Heat of fusion
C. Enthalpy change
D. Heat of transition
14.The pressure during the molar heat of fusion is kept
A. 0 atmosphere
B. one atmosphere
C. 2 atmosphere
D. 0 atmosphere
15.The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is
A. The molar heat of sublimation
B. The molar heat of fusion
C. The molar heat of vaporization
D. The molar heat of sublimation
16.All the enthalpy changes are
A. Negative
B. Positive
C. May or may not be a or b
D. Negative
17.Information technology is a combination of
A. Computing and mechanical technology
B. Computing and mechatronics technology
C. Computing and communication technology
D. Computing and mechanical technology
18.A collection of raw fact and figure is called.
A. Data
B. Information
C. Processing
D. Data
19.Which operation is not performed by computers?
A. Inputting
B. Processing
C. Controlling
D. Inputting
20.A set of instructions of computer are.
A. Hardware
B. Documents
C. CPU
D. Hardware
21.The electronic circuit that executes computer instruction is called
A. Keyboard
B. CPU
C. Monitor
D. Keyboard
22.Hardware is best described as.
A. Program
B. Physical parts
C. Procedure
D. Program
23.The electronic circuits of computer system are called
A. Software
B. Hardware
C. Firmware
D. Software
24.Which of the following is not an output device?
A. Speaker
B. Printer
C. Plotter
D. Speaker
25.Hardware components that permanently hold data and programs is called
A. Primary storage
B. Temporary storage
C. Secondary storage
D. Primary storage
26.The data and program are stored permanently on the.
A. RAM
B. CPU
C. Secondary storage
D. RAM
27.Types of application software are.
A. 5
B. 4
C. 3
D. 5
28.Which Software is used to solve everyday person or business tasks?
A. Opening System
B. Application Software
C. System Software
D. Opening System
29.The Software which is developed for particular customer is called.
A. Package
B. System
C. Shareware
D. Package
30.Which of the following is not an example of system software
A. MS -Word
B. Operating System
C. Device driver
D. MS -Word
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