Heating element of an electric heater is made up of___________?

A. Tungsten
B. Graphite
C. Chromium
D. Nichrome

Submitted by: Ashfaque Ali Khoso

Related Mcqs:

If the length of a heater coil is reduced by 10% of its original length, then Power consumed by heater will?
A. Increase over 10%
B. Decrease by 10%
C. Decrease by 0.5%
D. Increase by 0.5%

Submitted by: Mansoor Ul Haque
The gas heater gives us heat by __________?
A. Radiation
B. Conduction
C. Convection
D. Environmental pressure

Submitted by: Mansoor Ahmed Suhag
The increasing vapor pressure caused by heating a liquid is due to___________?
A. increase inter-molecular interactions
B. increasing potential energy of molecules
C. increasing kinetic energy of molecules
D. decreasing surface tension

Submitted by: Mansoor Ul Haque
Which Vitamin gets destroyed on heating?
A. B
B. E
C. K
D. C

Submitted by: WIQAR AHMAD
The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________?
A. Conduction of heat upward from a hot surface
B. Convection from a hot surface
C. Absorption of infrared energy that has been radiated from the surface
D. Heat energy from the earth’s interior

Submitted by: Mansoor Ul Haque
Coke is made by heating coal in the absence of air at__________?
A. 700 °C
B. 900 °C
C. 1300 °C
D. 1700 °C

Submitted by: Ashfaque Ali Khoso
A device that converts mechanical energy into electric energy is called_______?
A. Motor.
B. Transformer.
C. Coil.
D. Generator.
Who discovered the law of attraction and repulsion in electric charges?
A. Newton
B. Gullelio
C. Coulumb
D. Einstein

Submitted by: Mansoor Ahmed Suhag
______ is the “Work done in moving a unit charge between two points in an electric circuit”?
A. Potential difference
B. Current
C. Power
D. Resistence

Submitted by: Malik Asghar Hussain
Which of the following are not deflected by electric and magnetic fields ?
A. Alpha rays
B. Beta rays
C. Gamma rays
D. None of these

Submitted by: Aamir Balouch