Sail E0 Webinar

MCQs

Total Questions : 579 | Page 58 of 58 pages
Question 571. Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as________________?
  1.    Photochemical smog
  2.    Peroxyacetyl nitrate (PAN) or methyl nitrite
  3.    Benzopyrene
  4.    Polyacrylonitrile
 Discuss Question
Answer: Option B. -> Peroxyacetyl nitrate (PAN) or methyl nitrite
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 572. Aerobic biological oxidation ponds used for the purification of polluted water__________________?
  1.    Destroys/removes pathogen from the sewage
  2.    Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents
  3.    Destroys/removes pathogen much more effectively if the sewage is chlorinated
  4.    All A., B. & C.
 Discuss Question
Answer: Option D. -> All A., B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 573. Iron & manganese present in the polluted water is removed by __________________?
  1.    Simple filtration
  2.    Oxidation followed by settling & filtration
  3.    Chemical coagulation
  4.    Chlorination only
 Discuss Question
Answer: Option B. -> Oxidation followed by settling & filtration
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 574. TLV of aldrin in public water supply system is about ____________ μg/litre?
  1.    0.5
  2.    17
  3.    357
  4.    1097
 Discuss Question
Answer: Option B. -> 17
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 575. BOD of raw municipal sewage may be in the range of about _____________ mg/litre?
  1.    1-2
  2.    5-10
  3.    150-300
  4.    2000-3000
 Discuss Question
Answer: Option C. -> 150-300
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 576. Tolerable limit of nitrogen oxides in air is _____________ ppm?
  1.    0.1
  2.    1
  3.    5
  4.    25
 Discuss Question
Answer: Option C. -> 5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 577. Presence of ____________ in water stream are deleterious to aquatic life?
  1.    Soluble and toxic organics
  2.    Suspended solids
  3.    Heavy metals and cyanides
  4.    All A., B. & C.
 Discuss Question
Answer: Option D. -> All A., B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 578. Noise emitted by a ventilation fan at a distance of 3 metres is about _____________ decibels?
  1.    85
  2.    105
  3.    125
  4.    145
 Discuss Question
Answer: Option B. -> 105
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 579. The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by_________________?
  1.    Biological oxygen pond
  2.    Aerated lagoons
  3.    Trickling filters
  4.    Gravity separator having oil skimming devices
 Discuss Question
Answer: Option D. -> Gravity separator having oil skimming devices
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0