Home
Class 12
CHEMISTRY
Persons are medically considered to have...

Persons are medically considered to have lead poisoning if they have a concentration greater than `10` micrograms of lead per decilitre of blood. What is the concentration in parts per billion?

A

`1000`

B

`100`

C

`10`

D

`1`

Text Solution

Verified by Experts

The correct Answer is:
B
`10mug` per decilitre
`rArr10xx10^(-6)g` in `100 mL`
`therefore 10^(9)` parts (`1` billion)has `=(10xx10^(-6))/(100)xx10^(9)g=100g`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOLUTIONS

    RESONANCE|Exercise EXERCISE-1(PART-3)|3 Videos

  • SOLUTIONS

    RESONANCE|Exercise EXERCISE-2(PART-1)|25 Videos

  • SOLUTIONS

    RESONANCE|Exercise EXERCISE-1(PART-1)|33 Videos

  • SOLUTION AND COLLIGATIVE PROPERTIES

    RESONANCE|Exercise PHYSICAL CHEMITRY (SOLUTION & COLLIGATIVE PROPERTIES)|52 Videos

  • STEREOISOMERISM

    RESONANCE|Exercise EXERCISE (PART III : PRACTICE TEST-2 (IIT-JEE (ADVANCED PATTERN))|22 Videos

Similar Questions

Explore conceptually related problems

Pollutants are the substances which present in the environment in greater proportion than its natural abundance and resulting in harmful or deterimental effect on the quality of environment. Generally highly toxic substances are considered . Generally highly toxic even substances that are normally considered harmless can cause pollution if they are present in underirable concentration. Over exploitation of natural resourses uncontrolled mechanisation deforestation and extensive use of chemical fertilizers and pesticides have brought about many changes in different component of the environment . Acid rain is due to the increase in the concentration of . . . . . . . in the atmospheres

Lead concentration in blood is considered alarming if it is

Knowledge Check

  • A person is considered to be suffering from lead poisoning if its concentration in him is more than 15 micrograms of lead per decilitre of blood. Concentration in parts per billion parts is

    A
    1
    B
    0
    C
    150
    D
    1000

  • Salt concentration (parts per thousand) is less than 5% in

    A
    sea water
    B
    inland water
    C
    hypersaline water
    D
    freshwater

  • Lead concentration of blood is considered alarming at

    A
    `4-6 mu`/100 ml
    B
    `10 mug `/100 ml
    C
    `20 mug`/100 ml
    D
    `30 mug`/100 ml

    • Similar Questions

    Explore conceptually related problems

    The mercury content of a stream was believed to be above the minimum considered safe limit (1 part per billion, by mass). An analysis indicated that the concentration was 1.68 parts per billion. How many Hg atoms are present in 15 L of water, the density of which is 0.998 g/ml. (Hg = 200)

    The equilibrium constant K_(c ) for A (g) hArr B (g) is 1.1, gas B will have a molar concentration greater than 1 if:

    The equilibrium constant K_(c ) for A (g) hArr B (g) is 1.1, gas B will have a molar concentration greater than 1 if:

    Consider the following statements about intermolecular and intramolecular hydrogen bonds .ltbr gt I. Both types of H-bonds are temperature dependent. II. Intramolecular H- bonds disapperears on increaassing the concentration III. Intrmolecular H-bonds disppears on decreasing the concentration IV. The boiling point of compounds having intramolecular H-bond are lower than that of those campounds which have intermolecular H- bonds Which of the statement given above are correct ?

    Assertion root cells have lower water potential than leaf cellls Reason root cells have greater solute concentration

    Home
    Profile