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BOD values of four sample of water A, B,...

BOD values of four sample of water A, B, C and D is given below :
A. 160 ppm
B. 35 ppm 4 C. 180 ppm
D. 25 ppm
The decreasing order of extent of pollution in water is

A

`C gt A gt D gt B`

B

`D gt B gt A gt C`

C

`C gt A gt B gt C`

D

`D gt A gt B gt C`

Text Solution

Verified by Experts

The correct Answer is:
C
Less polluted water has lower BOD value.
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Knowledge Check

  • B.O.D values of four samples of water A,B,C and D are given below A 160 ppm B 35 ppm C 180 ppm D 25 ppm

    A
    `C gt A gt D gt B`
    B
    `D gt B gt A gt C`
    C
    ` C gt A gt B gt D`
    D
    ` D gt A gt B gt C`

  • Electronic configuration of four elements A,B,C and D are given below

    A
    `Alt CltBltd`
    B
    `AltBltCltD`
    C
    `DltBltCltA`
    D
    `DltAltBltC`

  • Four samples of water A, B, C and D have the DO values 1 mg / litre, 3 mg /litre, 5 mg / litre and 8 mg/litre respectively. The more polluted sample of water is

    A
    A
    B
    B
    C
    C
    D
    D

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