1000+ Environmental Science and Engineering MCQ Questions & Answers - 2

Question: 6

Which of the following industry is least polluting?

(A) electronic industry

(B) thermal power plants

(C) oil refinery

(D) cement industry

Question: 7

Which of the following pollutant affects lungs?

(A) adrin

(B) lead

(C) benzene

(D) silica

Question: 8

What is LASER?

(A) Light amplification by stimulated emission of radiation

(B) Supersonic waves

(C) Ultrasonic waves

(D) Electromagnetic waves

Question: 9

Electric fuses provide protecting against

(A) low current and voltage

(B) single phasing

(C) sparking

(D) overloads

Question: 10

DDT is

(A) a chlorinated hydrocarbon

(B) a naturally occurring chemical

(C) an inorganic compound

(D) a compound of phosphorous