MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which gas emitted by power stations causes acid rain? |
| A. | arbon dioxide |
| B. | ulphur dioxide |
| C. | elium |
| D. | itrogen |
| Answer» C. elium | |
| 2. |
What are the components responsible for acid rain? |
| A. | itrogen monoxide (NO) and Carbon monoxide (CO) |
| B. | ulphur dioxide (SO2) and Nitrogen oxides (NOx) |
| C. | arbon dioxide (CO2) and Carbon monoxide (CO) |
| D. | xides of carbon (COx) and Oxides of nitrogen (NOx) |
| Answer» C. arbon dioxide (CO2) and Carbon monoxide (CO) | |
| 3. |
Permanent hardness of water may be removed by addition of |
| A. | lum |
| B. | odium carbonate |
| C. | ime |
| D. | otassium Permangante |
| Answer» C. ime | |
| 4. |
Water cycle refers to |
| A. | n integrated attempt to recycle water in relatively arid regions |
| B. | onstant movement of water from ocean to land and back to ocean once again |
| C. | cientific management of water in areas excessively plagued with water-logging |
| D. | ater distribution in relatively dry areas |
| Answer» C. cientific management of water in areas excessively plagued with water-logging | |
| 5. |
Which of the following is a man-made source of air pollution ? |
| A. | utomobile exhaust |
| B. | orest fire |
| C. | acterial action in soil and swamp areas |
| D. | ll of the above |
| Answer» B. orest fire | |
| 6. |
White lung cancer is caused by |
| A. | sbestos |
| B. | ilica |
| C. | extiles |
| D. | aper |
| Answer» D. aper | |
| 7. |
Higher concentration of nitrogen dioxide in atmosphere air causes |
| A. | ancer |
| B. | ronchitis |
| C. | sphyxiation |
| D. | orrosion |
| Answer» C. sphyxiation | |
| 8. |
Which of the following appeared to be with a significant potential for accumulation through food chains ? |
| A. | DT |
| B. | arathion |
| C. | indane |
| D. | arbaryl |
| Answer» B. arathion | |
| 9. |
The purest form of water is |
| A. | ap water |
| B. | ain water |
| C. | round water |
| D. | istilled water |
| Answer» C. round water | |
| 10. |
Hard water and soft water can be distinguished by using |
| A. | ilute acid |
| B. | rdinary soap |
| C. | etergent |
| D. | iquid soap |
| Answer» D. iquid soap | |
| 11. |
The process of removing calcium and magnesium from hard water is known as |
| A. | edimentation |
| B. | iltration |
| C. | locculation |
| D. | ater softening |
| Answer» E. | |
| 12. |
Silk fibre chemically is : |
| A. | arbohydrate |
| B. | at |
| C. | rotein |
| D. | ellulose |
| Answer» D. ellulose | |
| 13. |
Glycol is used to manufacture which of the following ? |
| A. | ylon |
| B. | rtificial silk |
| C. | erylene |
| D. | ubber |
| Answer» D. ubber | |
| 14. |
Polythene is polymer of |
| A. | thylene |
| B. | ropylene |
| C. | cetylene |
| D. | niline |
| Answer» B. ropylene | |
| 15. |
Which of the following does the nucleus of an atom consists of? |
| A. | rotons and neutrons |
| B. | rotons and electrons |
| C. | lectrons |
| D. | rotons |
| Answer» B. rotons and electrons | |
| 16. |
Chemical properties of isotopes |
| A. | ust be same |
| B. | ust be different |
| C. | eed not be same |
| D. | eed not be different |
| Answer» B. ust be different | |
| 17. |
Atoms having the same number of protons but different number of neutrons are called : |
| A. | sotopes |
| B. | ations |
| C. | iggs-boson |
| D. | nions |
| Answer» B. ations | |
| 18. |
Nylon is made up of : |
| A. | olyamide |
| B. | olyester |
| C. | olyethylene |
| D. | olypropylene |
| Answer» B. olyester | |
| 19. |
The material known in commerce as Terylene is a |
| A. | ynthetic fibre |
| B. | atural fibre |
| C. | odified natural fibre |
| D. | lend of cotton and silk |
| Answer» B. atural fibre | |
| 20. |
All isotopes of the same element have ______________ |
| A. | ifferent atomic numbers and different atomic mass |
| B. | ifferent atomic numbers and the same atomic mass |
| C. | he same atomic number but different atomic masses |
| D. | he same atomic number and the atomic mass |
| Answer» D. he same atomic number and the atomic mass | |
| 21. |
What particles move around the nucleus of an atom and are negatively charged? |
| A. | lectrons |
| B. | rotons |
| C. | ositrons |
| D. | eutrons |
| Answer» B. rotons | |
| 22. |
J.J. Thomson’s proposed model of atom is generally called ________ model. |
| A. | ream and cake |
| B. | lum and pudding |
| C. | lum and cake |
| D. | ream and pudding |
| Answer» C. lum and cake | |
| 23. |
The fundamental particles present in the nucleus of an atom are |
| A. | lectron, proton |
| B. | roton, neutron |
| C. | eutron, electron |
| D. | eutron, positron |
| Answer» C. eutron, electron | |
| 24. |
All isotopes of the same element have ________ |
| A. | ifferent atomic numbers and different atomic mass |
| B. | ifferent atomic numbers and the same atomic mass |
| C. | he same atomic number but different atomic masses |
| D. | he same atomic number and the atomic mass |
| Answer» D. he same atomic number and the atomic mass | |
| 25. |
Atoms of different elements have |
| A. | ame atomic number and same electronic configuration |
| B. | ifferent atomic number and same eletronic configu-ration |
| C. | ifferent atomic number and different number of valence electrons |
| D. | ame number of electrons and neutrons |
| Answer» D. ame number of electrons and neutrons | |
| 26. |
The depletion in Ozone layer is caused by ________ . |
| A. | itrous oxide |
| B. | arbon dioxide |
| C. | hlorofluorocarbons |
| D. | ethane |
| Answer» D. ethane | |
| 27. |
Which of the following pollutants is main product of automobile exhaust ? |
| A. | O |
| B. | O2 |
| C. | O |
| D. | ydrocarbons |
| Answer» D. ydrocarbons | |
| 28. |
Which of the following is usually not an air-pollutant? |
| A. | ydrocarbons |
| B. | ulphur dioxide |
| C. | arbon dioxide |
| D. | itrous oxide |
| Answer» E. | |
| 29. |
Of the following which one pollutes the air of a big city ? |
| A. | opper |
| B. | hromium |
| C. | ead |
| D. | alcium |
| Answer» D. alcium | |
| 30. |
Of the following, which one pollutes the air of a big city ? |
| A. | opper |
| B. | hromium |
| C. | ead |
| D. | admium |
| Answer» D. admium | |
| 31. |
The acid rain destroys vegetations because it contains |
| A. | itric acid |
| B. | zone |
| C. | arbon monoxide |
| D. | ulphuric acid |
| Answer» E. | |
| 32. |
The constituents of automobile exhaust that can cause cancer is/are : |
| A. | xides of nitrogen |
| B. | arbon monoxide |
| C. | olycyclic hydrocarbons |
| D. | ead |
| Answer» E. | |
| 33. |
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.(A) Arsenic (B) Sorbitol (C) Fluoride (D) Formaldehyde (E) Uranium |
| A. | , D and E |
| B. | , B, C, D and E |
| C. | , C and E |
| D. | and C |
| Answer» D. and C | |
| 34. |
Most poisonous pollutant in water is |
| A. | inc |
| B. | hosphate |
| C. | rsenic |
| D. | etergent |
| Answer» D. etergent | |
| 35. |
The liquid waste from kitchens and baths, of residences is known as : |
| A. | omestic sewage |
| B. | torm water |
| C. | ullage |
| D. | efuse |
| Answer» D. efuse | |
| 36. |
Non-stick kitchenwares are coated with |
| A. | VC |
| B. | raphite |
| C. | eflon |
| D. | ilicon |
| Answer» D. ilicon | |
| 37. |
Which of the following fibres catches fire least ? |
| A. | ylon |
| B. | otton |
| C. | ayon |
| D. | erricot |
| Answer» C. ayon | |
| 38. |
Which of the following is used to make light weight, but strong plastic ? |
| A. | ylon |
| B. | olythene |
| C. | olyvinyl Chloride |
| D. | ethyl Methacrylate |
| Answer» D. ethyl Methacrylate | |
| 39. |
The fibre least prone to catch fire is |
| A. | ylon |
| B. | olyester |
| C. | otton |
| D. | erylene |
| Answer» D. erylene | |
| 40. |
Which of the following is used as non-stick coating for cooking utensils? |
| A. | erspex |
| B. | tyrofoam |
| C. | olystyrene |
| D. | eflon |
| Answer» E. | |
| 41. |
Which one of the following is also known as solution ? |
| A. | compound |
| B. | homogeneous mixture |
| C. | heterogeneous mixture |
| D. | suspension |
| Answer» C. heterogeneous mixture | |
| 42. |
A balloon filled with helium rises in air because |
| A. | ir exerts an upward force on the balloon |
| B. | he balloon is weightless |
| C. | elium is less dense than air |
| D. | elium pushes down on the air below the balloon |
| Answer» D. elium pushes down on the air below the balloon | |
| 43. |
The most abundant element is |
| A. | alcium |
| B. | ilicon |
| C. | xygen |
| D. | itrogen |
| Answer» D. itrogen | |
| 44. |
The gas used for filling weather balloons is |
| A. | elium |
| B. | ydrogen |
| C. | ir |
| D. | itrogen |
| Answer» B. ydrogen | |
| 45. |
Element 106 was discovered by |
| A. | utherford |
| B. | eaborg |
| C. | awrence |
| D. | urchatove |
| Answer» C. awrence | |
| 46. |
Except mercury which is the other metal that is liquid at standard conditions for temperature and pressure? |
| A. | ead |
| B. | romine |
| C. | arium |
| D. | agnesium |
| Answer» C. arium | |
| 47. |
Which one out of the following helps in burning ? |
| A. | xygen |
| B. | arbon monoxide |
| C. | itrogen |
| D. | arbon dioxide |
| Answer» B. arbon monoxide | |
| 48. |
Mixture can be |
| A. | omogeneous |
| B. | eterogeneous |
| C. | oth A and B |
| D. | ure substance |
| Answer» D. ure substance | |
| 49. |
Which of the following is not a noble gas ? |
| A. | ydrogen |
| B. | elium |
| C. | eon |
| D. | rgon |
| Answer» B. elium | |
| 50. |
The coloured discharge tubes for advertisement mainly contain |
| A. | enon |
| B. | rgon |
| C. | elium |
| D. | eon |
| Answer» E. | |