The gas heater gives us heat by __________?

Related Mcqs:

1. 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

2. Heating element of an electric heater is made up of___________?

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

   Submitted by: Ashfaque Ali Khoso

3. The gas, commonly known as “laughing gas”, is

   A. Carbon Dioxide
   B. Sulfur Dioxide
   C. Nitrous Oxide
   D. Sodium Oxide

4. Which of the gas is not known as green house gas?

   A. Methane
   B. Nitrous oxide
   C. Carbon dioxide
   D. Hydrogen

   Submitted by: Farjan Ahmed Soomro

5. As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what?

   A. “coma” around the comet’s nucleus and a long tail that points away from the sun
   B. “coma” that points away from the sun and a long tail around the comet’s nucleus
   C. Only “coma” around the comet’s nucleus
   D. Only a long tail that points away from the sun

   Submitted by: Muhammad Abdullah

6. Which diagnostic scan gives some of the highest radiation doses in diagnostic radiography ?

   A. CT-Scan
   B. Ultrasound
   C. MRI
   D. X-Ray

   Submitted by: Abid Hussain

7. In the manufacture of banaspati ghee the gas used is __________?

   A. Helium
   B. Hydrogen
   C. Oxygen
   D. Nitrogen

   Submitted by: Iram Saleem

8. __________ gas is released when coal is burnes in ln lack of Oxygen?

   A. Carbon Dioxide
   B. Methane
   C. Ethene
   D. Carbon Monoxide

   Submitted by: Rizwan Ahmed Panhwar

9. Which variety of glass is heat resistant?

   A. Bottle glass
   B. Flint glass
   C. Hard glass
   D. Pyrex glass

   Submitted by: ABDUL HAYEE

10. Heat of sun reaches the earth by ___________?

    A. Convection
    B. radiation
    C. Conduction
    D. None of these

    Submitted by: Rida