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:
MULTIPLE CHOICE QUESTIONS (MCQʻs)
(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
(D)CO
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)