Chemistry MCQs Unit 16 Environmental Chemistry 2nd Year

Chemistry MCQs unit 16 environmental chemistry from fsc 2nd year. All MCQs are from past papers of Fsc Inter part 2. Download in pdf.

Chemistry MCQs Unit 16:

(From Previous Board Papers 2014-2015-2016-2017-2018-2019-2020-2021-2022 and 2023)
Ecosystem is smaller unit of (FBD. RWP 2014) (SGD. GI, & GIL, MLN. GI, 2015)
(A) Lithosphere
(B) Hydrosphere
(C) Atmosphere
(D) Biosphere

The thickness of the atmosphere is about how many kilometers above the surface of the earth.
(BWP. 2015) (RWP. SWL. AJK. DGK. GII, 2016) (SWL. 2017) (BWP. GII, 2018)
(A) 100 Km
(B) 1000 Km
(C) 10,000 Km

Which is a secondary pollutant? (DGK. GI, 2014) (MLN. GI, 2017)
(A) Carbonic acid
(B) CO2
(C) SO2

The main Pollutant of leather tanneries in the wastewater is:
(LHR 2014) (AJK. SGD 2015) (MLN. GII, LHR. AJK 2016)
(LHR. GII.) (BWP. GI, 2017)
(A) Lead
(B) Chromium
(C) Copper
(D) Chromium

The pH of truely acidic rain is: (DGK. GII, SGD 2014) (DGK. MLN 2015) (MLN. GI, 2016) (SGD. GII, 2017) (GRW. RWP. BWP. GI, 2018)
(A) 7.6-8
(B) 6.5-6
(C) 6.5-6
(D) less than 5

Environmental Chemistry 2nd Year

Peroxyacetyl nitrate (PAN) is an irritant to human beings and it affects:
(MLN. GI, LHR. GI, DGK. GI, 2016) (LHR. GI, 2017)
(LHR. SGD. GII, AJK. 2018)
(A) Eyes
(B) Ears
(C) Stomach
(D) Nose

Which gas is cause of Asthma? (FBD. GI, 2016)
(A) 03
(B) O2
(C) SO2
(D) CO2

Water is disinfected by a substance to avoid toxification: (MLN. GII, 2014)
(A) KMnO4
(B) Alums
(C) 03
(D) Cl2

In water the concentration of dissolved 02 should be: (GRW. GII, 2015)
(A) 1-3 ppm
(B) 2-4 ppm
(D) 8-12 ppm

Hard water contains: (SGD. GI, 2014)
(A) Ca and Mg salts
(B) Carbonates of Na and K
(C) Chlorides of Na and K
(D) Sulphate of Al

The newspaper can be recycled again and again many times as:
(LHR. GI, & GI, DGK. GI, 2015) (LHR. GI, FBD. DGK 2016)
(MLN. GII, SGD. GI, FBD. 2017) (SWL. 2018)
(GRW. LHR. GII, BWP 2014)


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