Materials for rain-proof coats and tents owe their water proof properties to________?

Related Mcqs:

1. Material for rain-proof coats and tents owe their water proof properties to ________?

   A. Surface tension B. Viscosity C. Specific gravity D. Elasticity Submitted by: Ashfaque Ali Khoso...

2. Atmospheric temperature increases at the higher altitudes due to________?

   A. Conduction B. Convection C. Inversion D. Radiation Submitted by: Abdul Sami Bhayo...

3. Rainbow is seen after rain because of hanging molecules of water which act as __________?

   A. Lens B. Prism C. Mirror D. Slabs Submitted by: Abid Hussain...

4. Acid rain is mainly caused by emissions of __________ in the atmosphere?

   A. Sulfur Dioxide and Potassium Nitrate B. Sulfur and Charcoal C. Nitrogen Oxide and Potassium Nitrate D. Sulfur Dioxide and Nitrogen Oxide...

5. Fog that most often forms as warm rain falls into a cold layer of surface air is called ______________?

   A. Radiation fog B. Evaporation (mixing) fog C. Advection fog D. Upslope fog Submitted by: Mansoor Ul Haque...

6. Why normal rain is slightly acidic?

   A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid C. Ozone depletion D. All of these Submitted by: Palestine...

7. Instrument of rain gauge is _________?

   A. Drosometer B. Ombrometer C. Micrometer D. Pyrometer Submitted by: Shuaib Uddin...

8. Rain drops fall from great height Which among the following statements is true regarding it?

   A. they fall with that ultimate velocity, which are different for different droplets B. they fall with same ultimate velocity C. their velocity increases and they fall with different velocity on the earth D. their velocity increases and they fall with same velocity on the earth Submitted by: Abid Hussain...

9. An optical instrument which is used measure the properties of visible light is called?

   A. Microscope B. Telescope C. Spectroscope D. Oscilloscope Submitted by: Hussain Ahmed...

10. 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...