• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Environmental Engineering

Environmental Engineering
As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is

Same
Larger
Smaller
None of these

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be

300 ppm
200 ppm
400 ppm
100 ppm

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The chemical most commonly used to increase speed of sedimentation of sewage is

Lime
Copper sulphate
Sulphuric acid
Sodium permanganate

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
Which of the following unit works in anaerobic conditions?

Trickling filters
Activated sludge treatment
Sedimentation tank
Sludge digestion tank

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The settling velocity of a particle in a sedimentation tank depends on

Surface area of tank
Depth of tank
None of these
Both depth and surface area of tank

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The ratio of 5 day BOD to ultimate BOD is about

43864
43894
1
43833

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Environmental Engineering

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑