Water is _________ times viscous than air?

Related Mcqs:

1. Human blood is a viscous fluid due to_________?

   A. Platelets in plasma
   B. Proteins in blood
   C. RBC and WBC in blood
   D. Sodium in serum

   Submitted by: Malik Asghar Hussain

2. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

   A. Deffusion
   B. Osmosis
   C. Active transport
   D. None of these

3. Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

   A. Cockroach
   B. Earthworm
   C. Aves
   D. Frogs

4. During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?

   A. 16-30
   B. 15-20
   C. 5?10
   D. 6?12

5. Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

   A. Hagfish
   B. Fresh water fishes
   C. Bony fishes
   D. None of these

6. Mammalian kidney, under restricted water supply can conserve water by over ________ % reabsorption of glomerular filtrate

   A. 80.50%
   B. 90.50%
   C. 95.50%
   D. 99.50%

7. Water potential of pure water is__________?

   A. zero
   B. one
   C. negative
   D. two

   Submitted by: Maryam Aftab

8. The air spaces may comprise upto _________ of total volume of leaf surface?

   A. 30%
   B. 20%
   C. 40%
   D. 50%

9. At which times there is no net gaseous exchange between leaves and the atmosphere.

   A. Day time.
   B. Night time.
   C. Dawn & Dusk.
   D. Mid night.

10. heart beats 72 times in a male and _________Times in female in one minute.?

    A. 60 Times
    B. 70 Times
    C. 80 Times
    D. 85 Times

    Submitted by: Imtiaz Ali Noonari