Environmental Chemistry Online Mcqs Test

Q: How can I prepare for Environmental Chemistry Online Mcqs Test?

You can prepare for Environmental Chemistry Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. __________ are the resources that can be replenished by physical and biological means.

Answer

Non renewable

Question 2

2. Which substances do not react immediately with bromine water?

Question 3

3. Polymer formation from monomers starts by

Answer

Conversion of monomer to monomer ions by protons

Answer

Coordination reaction between monomers

Answer

Hydrolysis of monomers

Answer

Condensation reaction between monomers

Question 4

4. Fresh sewage is ____________ in nature

Answer

Highly acidic

Question 5

5. Lithosphere has amount of silicon

Question 6

6. Incineration of municipal waste is carried out in the temperature range of

Answer

500 to 900°C

Answer

950 to 1300°C

Answer

900 to 1000°C

Answer

250 to 500°C

Question 7

7. Vegetables oils are

Answer

Glycerides of saturated fatty acids

Answer

Unsaturated fatty acids

Answer

Essential oils obtained from plants

Answer

Glycerides of unsaturated fatty acids

Question 8

8. In human liver, which substance cause cancer

Answer

Caron dioxide

Answer

Chloroform

Question 9

9. Which of the following is not an air pollutant?

Question 10

10. As it passes into food chain, the concentration of DDT

Answer

Remains same

Answer

Unpredictable

Question 11

11. Chief air pollutant which is likely to deplete ozone layer

Answer

Nitrogen oxides and chloro fluorocarbon

Answer

Carbon dioxide

Answer

Sulphure dioxide

Answer

Carbon dioxide

Question 12

12. Atmospheric pollutant is

Question 13

13. Which of the following is not present in nucleotide?

Question 14

14. Ozone hole refers to

Answer

Increase concentration of ozone

Answer

Reduction of thickness of ozone in troposphere

Answer

Reduction in thickness of ozone layer in stratosphere

Answer

Hole in ozone layers

Question 15

15. Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to

Answer

Destruction of hemoglobin

Answer

Preventing reaction between oxygen and hemoglobin

Answer

Forming stable compound with hemoglobin

Answer

Combining with oxygen to form carbon dioxide

Question 16

16. The cause of Minamata disease in the pollution of

Answer

Industrial waste Having Hg

Answer

Oil spills in H₂O

Answer

Organic waste in drinking H₂O

Answer

Arsenic (As) into atmosphere

Question 17

17. Which of the following fibers are made of polyamides?

Question 18

18. Carbon monoxide is harmful to human beings as it

Answer

Is antagonistic to CO₂

Answer

Is destructive to O₃

Answer

Is carcinogenic

Answer

Has higher affinity for hemoglobin as compared to oxygen

Question 19

19. Which of the following groups of plants can be used as indicators of SO pollution of air?

Answer

Liver worts

Answer

Epiphytic lichens

Answer

Home worts

Question 20

20. Cyclone collector is used to reduce

Answer

Noise pollution

Answer

Radioactive pollution

Answer

Water pollution

Answer

Air pollution

Question 21

21. Which of the following is a non-point source of water pollution?

Answer

All of these

Answer

Urban and suburban lands

Answer

Sewage treatment plants

Question 22

22. Sulphure dioxide affects

Answer

All membrane systems

Answer

Plasmodesmata

Question 23

23. Classical smog occurs in places of

Answer

Excess SO₂

Answer

Low temperature

Answer

High temperature

Answer

Excess NH₃

Question 24

24. Pick up the correct statement

Answer

Classical smog has an oxidizing character while the photochemical smog is reducing in character

Answer

During formation of smog the level of ozone in the atmosphere goes down

Answer

Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours

Answer

CO which is major pollutant resulting from the combustion of fuels in automobiles plays a major role in photochemical smog

Question 25

25. Spraying of DDT produces pollution of

Answer

Air, water and soil

Answer

Air and soil

Answer

Air and water

Question 26

26. The metal present in blood is

Question 27

27. BOD is

Answer

None of these

Answer

Biological oxygen deficit

Answer

Biosphere oxygen demand

Answer

Biological oxygen demand

Question 28

28. A person is affected with carbon monoxide gas. How can we save him/her by adverse effect of the poisonous gas?

Answer

Supply pure O₂ for breathing

Answer

Drink dilute solution of NaHCO₃

Answer

Drink dilute solution of CH₃COOH

Answer

All are correct

Question 29

29. Depletion of ozone layer is due to

Answer

Oxides of sulphur

Answer

Oxides of carbon

Answer

Oxides of nitrogen

Answer

None of these

Question 30

30. Ozone hole is maximum over

Answer

Antarctica

Question 31

31. Ozone hole is

Answer

Decomposition of O₂ to O₃ in sunlight

Answer

Formation of a complex of O₃ with hydrocarbons

Answer

Depletion in total amount of O₃ in particular region

Answer

Increase of concentration of O₃ in tropical region

Question 32

32. Increasing skin cancer and high mutation rate are due to

Answer

CO₂ Pollution

Answer

Ozone depletion

Answer

CO pollution

Question 33

33. The main pollutant of leather tanneries in the waste water is

Answer

Chromium III

Answer

Chromium VI

Answer

Chromium IV

Answer

Chromium V

Question 34

34. Choose the crop for which ammonium nitrate is nit used

Answer

Paddy rice

Answer

Sugar cane

Question 35

35. Chemical oxygen demand of water (COD) is measure by reacting water with

Answer

Permanganate ion (MnO₄)

Answer

Dichromate ion (Cr₂O₇²¯)

Answer

Chromate ion (CrO₄²¯)

Answer

Sulphate ion (SO₄²¯)

Question 36

36. Which statement is incorrect about starch and cellulose?

Answer

Both are polysaccharides

Answer

Both can be found in living things

Answer

Both are formed by same type of monomers

Answer

Cellulose is greater in amount on earth as compared to starch

Question 37

37. Carbon monoxide is pollutant as it

Answer

Combines with oxygen

Answer

Combines with hemoglobin

Answer

Inhibits glycolysis

Answer

Inactivates nerves

Question 38

38. Environmental pollution affects

Answer

Plants only

Answer

Biotic and abiotic components of environment

Answer

Biotic components

Question 39

39. Most of the fertilizer are in prilled form because it is

Answer

Assimilated in the root hairs of plants

Answer

Less toxic

Answer

Easy to spread in the field

Answer

More soluble as compared to smaller crystals

Question 40

40. The product of addition polymerization reaction is

Question 41

41. Which one is not a pollutant normally?

Answer

Hydrocarbons

Answer

Sulphur dioxide

Answer

Carbon dioxide

Answer

Carbon monoxide

Question 42

42. Pollution is

Answer

Release of toxic/undesirable materials in environment

Answer

Conservation of energy

Answer

All the above

Answer

Removal of top soil

Question 43

43. How much percentage of total water is available as fresh water?

Question 44

44. Drained sewage has B.OD.

Answer

None of these

Answer

Less than that of water

Answer

Equal to that of water

Answer

More than that of water

Question 45

45. Glyptal polymer is obtained from glycerol on reacting with

Answer

Malonic acid

Answer

Maleic acid

Answer

Acetic acid

Answer

Phthalic acid

Question 46

46. Which one of the following macromolecules contains carbon, hydrogen, nitrogen and oxygen in it?

Question 47

47. The yellowish colour in photochemical smog is due to the presence of

Question 48

48. Newspapers can be recycled again and again by how many times?

Question 49

49. Biodegradable pollutant is

Question 50

50. Excess fluoride in drinking water is likely to cause:

Answer

Intestinal irritation

Answer

Blue baby syndrome

Answer

Change in taste and odour

Question 51

51. Colloidal material in the raw water is removed by

Answer

Purification

Answer

Chlorination

Answer

Coagulation

Answer

Combustion

Question 52

52. Phosphate pollution is caused by

Answer

Phosphate rocks and sewage

Answer

Weathering of phosphate rocks only

Answer

Sewage and agricultural fertilizers

Answer

Agricultural fertilizers

Question 53

53. Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Answer

Stratosphere

Question 54

54. The pH range of the acid rain is

Answer

Less than 5.6

Question 55

55. Pick out the wrong statement.

Answer

Mesosphere is characterized by very low atmospheric pressure and low temperature.

Answer

The radio waves used in the long distance radio communication are reflected back to earth by stratosphere.

Answer

The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone.

Answer

Troposhere is a dusty zone containing water vapor and clouds.

Question 56

56. Which field produces significant amount of methane in the atmosphere?

Answer

Paddy field

Answer

Cotton field

Answer

Wheat field

Answer

Can sugar field

Question 57

57. When urea is applied to crop it quickly hydrolysis to give ammonium carbonate, which is unstable and decomposes to release the gas

Question 58

58. What do you see as the main problem of Pakistan?

Answer

Clean drinking water

Answer

Shortage of food

Answer

Unemployment

Answer

Growing population

Question 59

59. Which sequence of steps is correct in paper making from pulp?

Answer

Flow spreader, Drying, pressing, calendar stock

Answer

Calendar stock, flow spreader, pressing drying

Answer

Calendar stock, Drying, pressing, flow spreader

Answer

Flow spreader, pressing, drying, calendar stock

Question 60

60. Which of the following is a major source of thermal pollution in water bodies?

Answer

Thermal power plant

Answer

Sewage treatment plant

Answer

Solid waste disposal sites

Answer

All of the above

Question 61

61. The equality of raw water is improved when it is chlorinated because

Answer

Hardness of water decreases

Answer

Cl₂ kills the pathogenic bacteria

Answer

pH of water is controlled

Answer

Dissolved oxygen increases

Question 62

62. Which of the following is an example of ketohexose?

Question 63

63. Fossil fuels like coal, oil, natural gas and metals are the examples of _________ resources.

Answer

Non-renewable

Question 64

64. Soft drinks and baby feeding bottles are generally made up of

Answer

Polystyrene

Answer

Polyurethane

Answer 166

Secondary structure

Answer 167

Quaternary structure

Answer 168

Tertiary structure

Answer 169

Primary structure

Answer 170

Chromium (VI)

Answer 171

Chromium (III)

Answer 172

950 to 1300+C

Answer 173

250 to 500°C

Answer 174

500 to 900°C

Answer 175

900 to 1000°C

Answer 176

None of these

Answer 177

Plastic toys

Answer 178

Epoxy resin

Answer 179

Chloramines

Answer 180

Na₂SO₃

Answer 181

Polyethene

Answer 182

Polyvinyl chloride

Answer 183

Sulphur oxide

Answer 184

Nitrogen oxide

Answer 185

CO₂ and CO

Answer 186

Ozone and dust

Answer 187

SO₂ and NO₂

Answer 188

SO₃ and CO

Answer 189

Urbanization

Answer 190

Increase of plantation

Answer 191

Rapid growth of population

Answer 192

Industrialization

Answer 193

Household waste

Answer 194

Radio-active fall out

Answer 195

Automobile exhausts

Answer 196

Pesticide residue

Answer 197

Polyhalogens

Answer 198

Fullerenes

Answer 199

One primary alcoholic group

Answer 200

One – CHO group

Answer 201

Four secondary alcoholic group

Answer 202

All are correct

Answer 203

Carbon dioxide

Answer 204

Carbon monoxide

Answer 205

Fossil fuel

Answer 206

Heat dispersion

Answer 207

None of these

Answer 208

Automobiles

Answer 209

Industries

Answer 210

Hydroelectric power

Answer 211

Pollen grains

Answer 212

Control the growth of fungus

Answer 213

Kill plants

Answer 214

Kill insects

Answer 215

Kill herbs

Answer 216

To help plant to undergo photosynthesis

Answer 217

To help in fixing of bacteria

Answer 218

To help to clean the atmosphere

Answer 219

To destroy nitrogen oxide from the atmosphere

Answer 220

Carbohydrate

Answer 221

Nucleic acid

Answer 222

Non-biodegradable foam

Answer 223

Undesirable plant growth

Answer 224

An aerobic attached growth treatment system

Answer 225

An aerobic suspended growth biological treatment system

Answer 226

An anaerobic suspended growth treatment system

Answer 227

An anaerobic attached growth biological treatment system

Answer 228

Buffer action

Answer 229

Neutrality

Answer 230

Alkalinity

Answer 231

Peroxy acetyl nitrate

Answer 232

Chlorine nitrate

Answer 233

SO₂ and SO₃

Answer 234

Carbon dioxide

Answer 235

Carbon monoxide

Answer 236

Sulphur oxide

Answer 237

Chlorofluorocarbons and nitrogen oxides

Answer 238

Hydrosphere

Answer 239

Lithosphere

Answer 240

Stratosphere

Answer 241

Keeping pH 7.35

Answer 242

Heat protein

Answer 243

Oxidizing agent

Answer 244

pH changes

Answer 245

Carbon monoxide

Answer 246

Sulphure dioxide

Answer 247

Air pollution

Answer 248

Non-biodegradable pollution

Answer 249

Biodegradable pollution

Answer 250

Usually less than COD

Answer 251

A measure of the organic matter presents in water

Answer 252

All of these

Answer 253

Biochemical oxygen demand

Answer 254

Increased shinning

Answer 255

Becoming dirty

Answer 256

Harmful stress

Answer 257

Dissolved oxygen

Answer 258

Dissolved hydrogen

Answer 259

Dissolved salts

Answer 260

All of these

Answer 261

Xanthoproteic test

Answer 262

Hopkins-cole

Answer 263

All of these

Answer 264

Calorimeter

Answer 265

Conductivity meter

Answer 266

Sulphure dioxide

Answer 267

Carbon monoxide

Answer 268

Nitrous oxide

Answer 269

Polyethylene

Answer 270

Smoke/fly ash

Answer 271

2, 4-D and pesticides

Answer 272

Automobile exhausts

Answer 273

Carbon dioxide

Answer 274

Sulphure dioxide

Answer 275

Industrial discharges

Answer 276

Nitrons oxide and unburnt hydrocarbons

Answer 277

NO and burnt hydrocarbons

Answer 278

N₂O and burnt hydrocarbons

Answer 279

Nilric oxide and unburnt hydrocarbons

Answer 280

Nitrogen peroxide

Answer 281

Sulphure dioxide

Answer 282

Chlorobenzene

Answer 283

Formaldehyde

Answer 284

Acetaldehyde

Answer 285

Excess production of NH₃ by industry and coal gas

Answer 286

Excess release of carbon monoxide by incomplete combustion

Answer 287

Excess NO₂ and SO₂ from burning fossil fuels

Answer 288

Excess formation of CO₂ by combustion and animal respiration

Answer 289

Coagulation

Answer 290

Self-oxidation reduction

Answer 291

Chlorination

Answer 292

Sulphur dioxide

Answer 293

Carbon monoxide

Answer 294

Carbon dioxide

Answer 295

Carbon monoxide

Answer 296

Carbon dioxide

Answer 297

Low temperature

Answer 298

Eating of seasonal vegetables

Answer 299

Inhalation of seasonal pollen

Answer 300

Wet and dry environment

Answer 301

Non-renewable

Answer 302

Global warming

Answer 303

None of these

Answer 304

Global warming

Answer 305

Increased incidence of skin cancer

Answer 306

Forest fires

Answer 307

Increases sulphur contents of soil

Answer 308

Acts pesticide

Answer 309

Increases nitrogen contents of soil

Answer 310

Increases oxygen contents of soil

Answer 311

Eucalyptus

Answer 312

Corn straw

Answer 313

Both b & c

Answer 314

Greater than 4 ppm

Answer 315

4 – 8 ppm

Answer 316

Greater than 8 ppm

Answer 317

Less than 4 ppm

Answer 318

Safe for human consumption

Answer 319

The Surface water

Answer 320

Now safe or human consumption

Answer 321

The ground water

Answer 322

Three dimensional twisting and folding of peptide chain

Answer 323

Hydrolysis of protein

Answer 324

Developing hydrogen bonding in peptide chain

Answer 325

Unfolding of protein

Answer 326

Paper thickness in reduced

Answer 327

Paper is wounded in the form of reel

Answer 328

Moisture is removed

Answer 329

Pulp is spread over fabric or screen

Answer 330

Glucose and fructose

Answer 331

Glucose and maltose

Answer 332

Fructose and maltose

Answer 333

Fructose and lactose

Answer 334

Neutrality

Answer 335

Buffer action

Answer 336

Pressed to remove moisture

Answer 337

Mechanical beating of fibers

Answer 338

Pulp is dispersed in water and slurry is obtained

Answer 339

Addition of chemical additives

Answer 340

Aquatic plants

Answer 341

Microorganisms

Answer 342

Manufacturing process

Answer 343

Chemical composition

Answer 344

Physical properties

Answer 345

All of these

Answer 346

Atomic explosions and industrial wastes

Answer 347

Aerosols and high flying jets

Answer 348

Fungicides, insecticides, bactericides and

Answer 349

Balloons and turbo-prop airplanes

Answer 350

Lithosphere

Answer 351

Hydrosphere

Answer 352

Atmosphere

Answer 353

250 to 500°C

Answer 354

500 to 900°C

Answer 355

950 to 1300°C

Answer 356

900 to 100°C

Answer 357

2ppm – 6ppm

Answer 358

2ppm – 4ppm

Answer 359

4ppm – 8ppm

Answer 360

2ppm – 3ppm

Answer 361

Animal fiber

Answer 362

None of these

Answer 363

Mineral fiber

Answer 364

Vegetable fiber

Answer 365

Air pollution

Answer 366

Radioactive pollution

Answer 367

Water pollution

Answer 368

Noise pollution

Answer 369

Temperature mediated spoilage of marble

Answer 370

All of these

Answer 371

Flood in Ravi

Answer 372

Air pollutants from Lahore chemical industries

Answer 373

Barium Sulphate

Answer 374

Nickel Sulphate

Answer 375

Copper Sulphate

Answer 376

Basic elements

Answer 377

Nutrient elements

Answer 378

Trace elements

Answer 379

Cross linked or inter connected polymer

Answer 380

Synthetic polymer

Answer 381

Linear polymer

Answer 382

The chlorine atom is larger than the fluorine atom

Answer 383

The C – F bond is stronger than C – Cl bond

Answer 384

The C – F bond is stronger than the C – Cl bond

Answer 385

Fluorine is more electronegative than chlorine

Answer 386

Homopolymer

Answer 387

Heteropolymer

Answer 388

Terpolymer

Answer 389

C₃H₃O₃

Answer 390

C₁₈H₃₆O₁₈

Answer 391

C₁₈H₃₂O₁₆

Answer 392

C₃H₆O₃

Answer 393

Non-renewable

Answer 394

Are very inflammable

Answer 395

Decompose to produce toxic products

Answer 396

Burn to produce toxic fumes

Answer 397

Are made from petroleum

Answer 398

Its high cost

Answer 399

It is less effective than others

Answer 400

It becomes ineffective after some time

Answer 401

It is not easily/rapidly degraded on nature

Answer 402

Remove hardness

Answer 403

Remove suspended particles

Answer 404

Increase oxygen content

Answer 405

Kill germs

Answer 406

Wet scrubber

Answer 407

Electrostatic precipitator

Answer 408

Cyclone separator

Answer 409

Fabric filter

Answer 410

Thermosphere

Answer 411

Stratosphere

Answer 412

Mesosphere

Answer 413

Trophosphere

Answer 414

All the above

Answer 415

Thermal power plant

Answer 416

Agro-industry

Answer 417

None of these

Answer 418

Ionosphere

Answer 419

Stratosphere

Answer 420

Troposphere

Answer 421

Is colourless

Answer 422

A combination of smoke and fog

Answer 423

All of these

Answer 424

A natural phenomenon

Answer 425

Global warming

Answer 426

Greenhouse effect

Answer 427

UV rays reach the earth

Answer 428

Photochemical oxidants

Answer 429

Sulphur dioxide

Answer 430

Chlorofluorocarbon

Answer 431

Household waste

Answer 432

Pesticide residue

Answer 433

Radioactive fall out

Answer 434

Automobile exhausts

Answer 435

Ascorbic acid

Answer 436

Riboflavin

Answer 437

Polystyrene

Answer 438

Primary pollutant

Answer 439

Secondary pollutant

Answer 440

Coagulation

Answer 441

Carbonic anhydrase

Answer 442

Vitamin B₁₂

Answer 443

Chlorophyll

Answer 444

Haemocyanin

Answer 445

Cement industry

Answer 446

Leather tanning

Answer 447

Water purification

Answer 448

Fertilizer industry

Answer 449

Neutrality

Answer 450

Buffer action

Answer 451

Industrial waste containing mercury into fishing water

Answer 452

Organic waste into drinking water

Answer 453

Oil spill in water

Answer 454

Arsenic into the atmosphere

Answer 455

Hydrocarbons

Answer 456

Carbohydrates

Answer 457

Polyester fiber

Answer 458

Dissolved oxygen

Answer 459

All of these

Answer 460

Allotropes

Answer 461

It reduces the thickness of paper

Answer 462

It dry the paper

Answer 463

It discharge the pulp at the screen of Fourdriner table

Answer 464

Web structure is consolidated

Answer 465

More than 1

Answer 466

Less than 1

Answer 467

Equal to 1

Answer 468

None of these

Answer 469

Lung cancer

Answer 470

Mouth cancer

Answer 471

Skin cancer

Answer 472

Liver cancer

Answer 473

Nitrogen oxide

Answer 474

Sulphure dioxide

Answer 475

Nitric oxide

Answer 476

Nitrous oxide

Answer 477

Which depends on the amount of dust in air

Answer 478

Slightly higher than that when the thunderstorm is not there

Answer 479

Uninfluenced by occurrence of thunderstorm

Answer 480

Slightly lower than that of rain water without thunderstorm

Answer 481

Adipic acid

Answer 482

Livestock waste

Answer 483

Oil leaks and spills

Answer 484

Disposal of industrial effluents

Answer 485

Treatment with chlorine

Answer 486

Treatment with Iodine

Answer 487

Coagulation

Answer 488

Sodium (I)

Answer 489

Chromium (VI)

Answer 490

Calcium (II)

Answer 491

Chromium (III)

Answer 492

Organic matter

Answer 493

None of these

Answer 494

Microbes and organic matter

Answer 495

Elastomers

Answer 496

Thermosetting polymers

Answer 497

Thermoplastics

Answer 498

Acidification of soil

Answer 499

Drying of soil

Answer 500

Combustion of soil

Answer 501

Neutralization of soil

Total Questions:	201
Time Allowed:	60 Minutes
Total Marks:	201
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	ECAT Entry Test Chemistry Online Test Interview Questions about Chemisttry All Universities Entrance Test Recruitments Tests

Environmental Chemistry Online Mcqs Test

Important Environmental Chemistry Question and Answer

Environmental Chemistry Practice Test Online With Explanation

How to Score High in Environmental Chemistry Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Mustansar Khan

Leave a Reply Cancel reply

Important Environmental Chemistry Question and Answer

Environmental Chemistry Practice Test Online With Explanation

How to Score High in Environmental Chemistry Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Latest Updates

Mustansar Khan

Leave a Reply Cancel reply