The gas used in a refrigerator to cool water is___________?

Related Mcqs:

1. The common refrigerant used in domestic Refrigerator is_____________?

   A. Neon
   B. Spirit
   C. Freon/Ammonia
   D. Methane

   Submitted by: Mansoor Ul Haque

2. The chemical name of Laughing gas is___________?

   A. Nitric oxide
   B. Nitrogen dioxide
   C. Nitrogen pentoxide
   D. Nitrous oxide

   Submitted by: Iram Saleem

3. The gas usually filled in the electric bulb is___________?

   A. Nitrogen
   B. Hydrogen
   C. Carbon dioxide
   D. Oxygen

   Submitted by: Muhammad Ali Kunbhar

4. In blood, the percentage of water is___________?

   A. 75%
   B. 85%
   C. 90%
   D. 95%

   Submitted by: Ashfaque Ali Khoso

5. Speed of sound in water at 20 °C is___________?

   A. 1450 m/s
   B.1474 m/s
   C. 1498 m/s
   D. 1500+ m/s

   Submitted by: ARIF HUSSAIN

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

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

7. 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

8. 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

9. Which gas is used in preparation of Soda water?

   A. Ammonia
   B. Hydrogen
   C. Nitrogen
   D. Carbon Dioxide

   Submitted by: Mansoor Ahmed Suhag

10. Why are soft drink made with chilled water rather than water at room temperature?

    A. Ingredients dissolve better in chilled water
    B. Chilled water enhances the taste
    C. Chilled water attracts more carbon dioxide 
    D. Chilled water is more hygienic

    Submitted by: Ashfaque Ali Khoso