1
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The average atmospheric residence time is lowest for which of the given the greenhouse gas?

A

Carbon dioxide

B

Methane

C

Nitrous oxide

D

Freon

2
TS EAMCET 2020 (Online) 11th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following molecules is present in photochemical smog?

A

$\mathrm{SO}_2$

B

$\mathrm{NO}_2$

C

$\mathrm{CO}_2$

D

CO

3
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is air pollutant?

A

Pesticides

B

Phosphates

C

Biphenyls

D

Oxides of sulphur

4
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Biochemical oxygen demand (BOD) is a measure of organic materials present in water, BOD value less than 5 ppm indicates a water sample to be

A

rich in dissolved oxygen

B

poor in dissolved oxygen

C

highly polluted

D

not suitable for aquatic life

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