Detergents dissolved in water help in cleaning clothes by_________?

Related Mcqs:

1. Soap and detergents remove the dirt from clothes due to__________?

   A. Osmosis
   B. Capillary action
   C. Lowering of interfacial tension
   D. Diffusion

   Submitted by: Muhammad Ali Kunbhar

2. Pressure is measured by_________?

   A. barometer
   B. Voltmeter
   C. Lactometer
   D. Ammeter

   Submitted by: Shakil Ahmed

3. Anti Diuretic hormone (ADH) also known as Vasopressin, Arginine Vasopressin and agripressin. Is secreted by_________ ?

   A. Pituitary
   B. Pancreas
   C. Thyroid
   D. Parathyroid

   Submitted by: Mansoor Ahmed Suhag

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. Night vision is possible with the help of ___________?

    A. Red light
    B. Violet light
    C. Infrared Rays
    D. Ultra violet Light
    E. None of these