The transition temperature of mercury is____________?

Related Mcqs:

1. At transition temperature the value of critical field is____________?

   A. zero
   B. negative real value
   C. positive real value
   D. complex value

2. The value of critical field below the transition temperature will_______________?

   A. increase
   B. decrease
   C. remain unchanged
   D. any of the above

3. Mercury as an electric contact material is_______________?

   A. a liquid
   B. a metal
   C. a metal liquid
   D. a gas

4. Total number of crystal systems is____________?

   A. 2
   B. 4
   C. 7
   D. 12

5. In graphite, bonding is____________?

   A. covalent
   B. metallic
   C. Vander Waals
   D. Vander Waals and covalent

6. The metal having the lowest temperature coefficient of resistance is_________________?

   A. gold
   B. copper
   C. aluminium
   D. kanthal

7. Which of the following resistive materials has the lowest temperature co-efficient of resistance ?

   A. Nichrome
   B. Constantan
   C. Kanthal
   D. Molybdenum

8. The resistivity of a metal is a function of temperature because_____________?

   A. the amplitude of vibration of the atoms varies with temperature
   B. the electron density varies with temperature
   C. the electron gas density varies with temperature

9. Which of the following high resistance materials has the highest operating temperature ?

   A. Kanthal
   B. Manganin
   C. Nichrome
   D. Eureka

10. Substances whose specific resistance abruptly decreases at very low temperature are called___________?

    A. insulators
    B. conductors
    C. semiconductors
    D. superconductors