Why normal rain is slightly acidic?

Related Mcqs:

1. The contraction and expansion of the movement of the walls of the food pipe after entering the slightly digested food is known as ______ movement

   A. Gastric
   B. Diastolic
   C. Peristaltic
   D. Oscillatory

   Submitted by: Malik Asghar Hussain

2. 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

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

   A. Surface tension
   B. Viscosity
   C. Specific gravity
   D. Elasticity

4. 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

5. 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

6. Instrument of rain gauge is _________?

   A. Drosometer
   B. Ombrometer
   C. Micrometer
   D. Pyrometer

   Submitted by: Shuaib Uddin

7. 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

8. 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

9. Which of the following explains the reason why there is no total eclipse of the sun?

   A. Size of the earth in relation to that of moon
   B. Orbit of moon around earth
   C. Direction of rotation of earth around sun
   D. Area of the sun covered by the moon
   E. None of these

10. Why the needle of iron swims on water surface when it is kept gently ?

    A. It will remain under the water, when it will displace more water than its weight
    B. the density of needle is less than that of water
    C. due to surface tension
    D. due to its shape

    Submitted by: Abid Hussain