CO is harmful to human being because:

Related Mcqs:

1. A very harmful fibrous component causing pollution an inflicting diseases of lungs in human beings:

   A. Grease
   B. Asbestos
   C. Eichhornia roots
   D. ABS micelle

2. The most harmful effect of ionising radiations precisely involves:

   A. Cell membranes
   B. DNA
   C. Mitochondria and ribosomes
   D. Nucleus

3. Most harmful heavy metals causing water pollution:

   A. Pb, Hg, Cr, Cd
   B. P,Mn,B,Mg
   C. N,K,Mo
   D. Zn,Mo,Mg,Ag

4. The most harmful pesticide is:

   A. PAN
   B. 2,4,5-T
   C. 2,4-D
   D. DDT

5. The most harmful component of detergents causing water pollution is:

   A. Linear alkyl sulphonate
   B. Sulphates and phosphate
   C. Alkyl benzenes sulphonate
   D. None of these

6. The effect of today’s radioactive fallout will probably be more harmful to children of future generations than to children now living because:

   A. Contamination of milk supply is not cumulative
   B. Infants are more susceptible to radiation
   C. Susceptibility to radiation increases with age
   D. Mutated genes are frequently recessive

7. Harmful effects can also result from:

   A. Pruning trees that are growing very slowly
   B. Removing large branches
   C. Eliminating too much of the live crown
   D. Committing similar errors of judgment
   E. All of the above

8. In human beings, anoxia is caused due to:

   A. SO2
   B. CO
   C. CO2
   D. NO2

9. Through food chain radioactive Sr (Sr90) is deposited in which part of human body?

   A. Kidneys
   B. Thyroid
   C. Bones
   D. Muscles

10. The Escherichia cells in a human excreta number in:

    A. Thousands
    B. Hundreds
    C. Billion
    D. Millions