Element extracted from Sea water?

Related Mcqs:

1. Which metal is extracted from sea water?

   A. Potassium
   B. Magnesium
   C. Aluminum
   D. None of these

   Submitted by: H@yii

2. The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water.

   A. 1 gram
   B. 10 grams
   C. 1 kg
   D. 10 kg

3. The most abundant element in sea water is?

   A. Chlorine
   B. Sodium
   C. Sulfur
   D. Magnesium

   Submitted by: Naveed Tahir

4. First antibiotic was extracted from a _________?

   A. Bacteria
   B. virus
   C. Fungus
   D. None of these

   Submitted by: Rafi Umar

5. Sea water (Salt water) freezes at ?

   A. Same temperature as fresh water.
   B. Slightly higher temperatures than fresh water.
   C. Slightly higher temperature than fresh water.
   D. Sea water does not freeze

   Submitted by: Mansoor Ahmed Suhag

6. An iceberg is floating in sea. How much of its mass will remain above the surface of water?

   A. One tenth
   B. One fifth
   C. One fourth
   D. One third

7. Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?

   A. Conduction
   B. Convection
   C. Radiation
   D. Reflection
   E. None of these

8. 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

9. For seeing objects at the surface of water from a submarine under water, the instrument used is ________?

   A. Periscope
   B. Telescope
   C. Kaleidoscope
   D. Spectroscope

   Submitted by: Rashid Mehmood

10. Underground water and the water on the earth’s surface is called ?

    A. Mezosphere
    B. Ionosphere
    C. Hydrosphere
    D. None of these

    Submitted by: Haziq