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Which of the following materials does not have covalent bonds ?
Related MCQs
Super conductivity can be destroyed by__________?
Which of the following affect greatly the resistivity of electrical conductors ?
__________ is a hard solder?
Most of the common metals have _________ structure?
Addition of 0.3 to 4.5% silicon to iron ________ the electrical resistivity of iron?
Thermonic emission occurs in__________?
A good electric contact material should have all of the following properties except__________?
_________ is an example of piezoelectric material?
Piezoelectric materials serve as a source of __________ ?
__________is viscoelastic?
Solder is an alloy of__________?
In thermocouples which of the following pairs is commonly used ?
Carbon electrodes are not used in__________?
__________ is most commonly used for making magnetic recording tape?
__________ is the main constituent of glass?
Overhead telephone wires are made of__________?
Which of the following variety of copper has the best conductivity ?
Which of the following is the poorest conductor of electricity ?
Constantan contains__________?
The structure sensitive property of a super conductor is__________?
The transition temperature of mercury is__________?
At transition temperature the value of critical field is__________?
By increasing impurity content in the metal alloy the residual resistivity always__________?
The coils of D.C. motor starter are wound with wire of__________?
An H.R.C. fuse is__________?
The conductors have transport phenomena of electrons due to__________?
Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
Mercury as an electric contact material is__________?
On which of the following factors does the resistivity of a material depend ?
The value of critical field below the transition temperature will__________?
Superconductivity is observed for__________?
highest conductivity__________?
High resistivity materials are used in__________?
In a superconductor the value of critical density depends upon__________?
The conductivity of a conductor can be increased by__________?
The superconductivity is due to__________?
Superconductors are becoming popular for use in__________?
Which of the following materials is preferred for transmitting electrical energy over long distance ?
A highly conductive material must have__________?
The co-ordination number of a simple cubic structure is__________?
The metal having the lowest temperature coefficient of resistance is__________?
The kinetic energy of a bounded electron is__________?
Commonly used conducting materials are__________?
A perfect conductor has__________?
The formula __________ determines the number of electrons that can be accommodated in any level?
The converse of hardness is known as__________?
is a negatively charged particle present in an atom__________?
The tiny block formed by the arrangement of a small group of atoms is called the__________?
The covalent bond is formed by__________?
Which of the following materials does not have covalent bonds ?
A. Organic polymers
B. Silicon
C. Metals
Correct Answer:
Metals
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Last Updated:
December 22, 2018