On the basis of the type of chemical bonds, solids may be classified into

Materials and Components
On the basis of the type of chemical bonds, solids may be classified into

Ionic crystals

Ionic and valence crystals

Ionic crystals, valence crystals, metal and vander wall crystals

Ionic crystal, valence crystals and metals

Ionic crystals

Ionic and valence crystals

Ionic crystals, valence crystals, metal and vander wall crystals

Ionic crystal, valence crystals and metals

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Materials and Components
In van der walls crystals, there exists a high degree of stability of the outer electron shell.

True

False

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Materials and Components
The most important set of specifications of transformer oil include

flash point and viscosity

viscosity and flash point

dielectric strength and flash point

dielectric strength and viscosity

flash point and viscosity

viscosity and flash point

dielectric strength and flash point

dielectric strength and viscosity

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Materials and Components
In an intrinsic semiconductor, at a given temperature T

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

Any of the above

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

Any of the above

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

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Materials and Components
In a metal, the valence electrons

Are shared by all atoms

Either B or C

Are not shared

Are shared only between neighbouring atoms

Are shared by all atoms

Either B or C

Are not shared

Are shared only between neighbouring atoms

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Materials and Components
If a small amount of Cu is added to Ni conductor, then

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

Resistivity of Ni remains the same

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

Resistivity of Ni remains the same

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

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Materials and Components

Materials and Components On the basis of the type of chemical bonds, solids may be classified into

Materials and Components In van der walls crystals, there exists a high degree of stability of the outer electron shell.

Materials and Components The most important set of specifications of transformer oil include

Materials and Components In an intrinsic semiconductor, at a given temperature T

Materials and Components In a metal, the valence electrons

Materials and Components If a small amount of Cu is added to Ni conductor, then

Materials and Components
On the basis of the type of chemical bonds, solids may be classified into

Materials and Components
In van der walls crystals, there exists a high degree of stability of the outer electron shell.

Materials and Components
The most important set of specifications of transformer oil include

Materials and Components
In an intrinsic semiconductor, at a given temperature T

Materials and Components
In a metal, the valence electrons

Materials and Components
If a small amount of Cu is added to Ni conductor, then