General Science MCQs With Answer by General knowledge Solutions

General Science MCQs With Answer   by General knowledge Solutions

Q.1: Electric power is less expensive at night because:

ANSWER:  THERE IS LESS DEMAND AT NIGHT

Q.2: Name THREE TECHNIQUES for removing particulates from flue gas produced from the combustion of coal?

ANSWER:

(1) ELECTROSTATIC PRECIPITATION (ESP)

(2) FABRIC FILTER OR BAGHOUSE

(3) WET SCRUBBERS

(4) MECHANICAL COLLECTORS OR CYCLONES

Q.3: Name TWO sorbents which are used in conventional wet scrubbing processes to remove SO2 produced by combusting coal

ANSWER:

(1) LIME

(2) LIMESTONE

(3) SODIUM SULFITE OR NaCO3 OR NaOH

Q.4:  Name THREE gaseous components produced when coal is combusted

ANSWER:

(1) CO2

(2) SO2

(3) NOX

(4) H2O

Q.5: Electricity generated by coal-fired power plants i the United States in 1990 was approximately what percentage of the entire electricity produced by all sources of power production?

ANSWER:  55 PERCENT

Q.6: The majority of the U.S. electricity generating plant use what thermodynamic cycle?

ANSWER: RANKINE

Q.7: Which continent has the largest KNOWN deposits of coal?

ANSWER: NORTH AMERICA

Q.8: In electronic circuits, what name is given to a frequency discriminating network designed to select or pass certain bands of frequencies with low attenuation and cause very high attenuation to other frequencies?

ANSWER: FILTER

Q.9:  Pollination by wind is called:

ANSWER:  ANEMOPHILY

Q.10: What is the technique by which lasers are used to photograph objects and reproduce them in three dimensions?

ANSWER: HOLOGRAPHY