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. |
How biocides work? |
| A. | Control the multiplication of insects |
| B. | Kill the insects |
| C. | Manage the original form of material |
| D. | Control the bacteria |
| Answer» E. | |
| 2. |
Which one is not the form of Biocides? |
| A. | Salt |
| B. | Iodine |
| C. | Sugar |
| D. | Bleech |
| Answer» E. | |
| 3. |
Match the following: Set I a. A Fatty Acid b. Potassium Hydroxide c. Non-ionic Surfactants d. Neutralization Set II 1. Better Alkali 2. Process to make detergent 3. Process to make soap 4. Oil and fats Code: |
| A. | 3 4 2 1 |
| B. | 1 2 3 4 |
| C. | 4 1 2 3 |
| D. | 2 3 4 1 |
| Answer» D. 2 3 4 1 | |
| 4. |
Define toxicity? |
| A. | A chemical reaction |
| B. | A process used in the manufacturing of detergents |
| C. | A harmful effect of soaps and detergents required to measure the effectiveness. |
| D. | A process used in the manufacturing of soaps |
| Answer» D. A process used in the manufacturing of soaps | |
| 5. |
Which of the following compound is not used as an an alkali? |
| A. | Sodium hydroxide |
| B. | Potassium hydroxide |
| C. | Carbon hydroxide |
| D. | Nitrogen hydroxide |
| Answer» E. | |
| 6. |
Detergent is defined as..... |
| A. | A liquid surfactant |
| B. | A liquid soluble |
| C. | A liquid sovent |
| D. | A liquid solution |
| Answer» B. A liquid soluble | |
| 7. |
Tell the composition of soap? |
| A. | Sodium salt with fatty acids. |
| B. | Potassium salt with fatty acids |
| C. | Both a & b |
| D. | Sodium and Potassium salt mixed with chemicals |
| Answer» D. Sodium and Potassium salt mixed with chemicals | |
| 8. |
Bio-chemical compounds are used as.... |
| A. | Skin Treatments |
| B. | Food preservatives |
| C. | Cooking Oils |
| D. | All of the above |
| Answer» E. | |
| 9. |
Chemistry is a branch of science which can be used for providing the services to mankind. Comment on the statement |
| A. | 1 |
| B. | |
| C. | May Be |
| D. | Strongly not |
| Answer» E. | |
| 10. |
As a vegetable preservative poly______ foam is used. |
| A. | Uthane |
| B. | Uriathenes |
| C. | Urathanes |
| D. | Urethanes |
| Answer» E. | |
| 11. |
In which form the chemical compound RDX is used? |
| A. | As an composition |
| B. | As an reactor |
| C. | As an explosive |
| D. | As an nuclear weapon |
| Answer» D. As an nuclear weapon | |
| 12. |
The electrochemical cell stops working after some time because ________ |
| A. | Electrode potential of both the electrodes becomes zero |
| B. | One of electrodes completely vanishes |
| C. | Electrode potential of both electrodes equalizes |
| D. | The reaction reverses its direction |
| Answer» D. The reaction reverses its direction | |
| 13. |
Which one of the following elements is essential for construction is nuclear reactors |
| A. | Cobalt |
| B. | Nickel |
| C. | Zirconium |
| D. | Tungsten |
| Answer» D. Tungsten | |
| 14. |
Misch metal ' is widely used in manufacture of which of the following |
| A. | Material of car brake |
| B. | Smoke detectors |
| C. | Cigarette lighters |
| D. | Emergency lights |
| Answer» D. Emergency lights | |
| 15. |
Temporary hardness is due to the presence of |
| A. | Calcium carbonate |
| B. | calcium bicarbonate |
| C. | magnesium sulphate |
| D. | calcium sulphate |
| Answer» C. magnesium sulphate | |
| 16. |
How many electrons are there in Na+ |
| A. | 1 |
| B. | 10 |
| C. | 11 |
| D. | 12 |
| Answer» C. 11 | |
| 17. |
The discovery of neutron became very late because |
| A. | it is present in nucleus |
| B. | it is a fundamental particle |
| C. | it does not move |
| D. | it does not carry any charge |
| Answer» E. | |
| 18. |
The absolute value of charge on electron was determined by |
| A. | J.J.Thomson |
| B. | R.A. Millikan |
| C. | Rutherford |
| D. | Chadwick |
| Answer» C. Rutherford | |
| 19. |
Which one of the following mixture is homogeneous |
| A. | starch and sugar |
| B. | methanol and water |
| C. | graphite and charcoal |
| D. | calcium carbonate and calcium bicarbonate |
| Answer» C. graphite and charcoal | |
| 20. |
Sodium carbonate crystal lose water molecules this property is called |
| A. | hygroscopy |
| B. | deliquescence |
| C. | efflorescence |
| D. | None of these |
| Answer» D. None of these | |
| 21. |
What is the oxidation number of sulfur in H2S? |
| A. | 2 |
| B. | 2 |
| C. | 1 |
| D. | 1 |
| Answer» C. 1 | |
| 22. |
Is C2 Paramagnetic or Diamagnetic? |
| A. | Paramagnetic |
| B. | Diamagnetic |
| C. | Ferromagnetic |
| D. | Can't be determined |
| Answer» C. Ferromagnetic | |
| 23. |
The M.K.S. system was first introduced by |
| A. | archimedes |
| B. | Eienstein |
| C. | Newton |
| D. | Giorgi |
| Answer» E. | |
| 24. |
Which one of the following substances does not have a melting point |
| A. | bromine |
| B. | sodium chloride |
| C. | mercury |
| D. | glass |
| Answer» E. | |
| 25. |
What is the third most common gas found in the air we breathe ? |
| A. | Argon |
| B. | Neon |
| C. | Carbondioxide |
| D. | Carbondioxide |
| Answer» B. Neon | |
| 26. |
Yellow cake ' an item of smuggling across border s |
| A. | A crude form of heroin |
| B. | A crude form of cocaine |
| C. | Uranium oxide |
| D. | Unrefined gold |
| Answer» D. Unrefined gold | |
| 27. |
Cobalt - 60 is commonly used in radiation therapy because it emits |
| A. | alpha - rays |
| B. | beta rays |
| C. | gamma rays |
| D. | X - rays |
| Answer» D. X - rays | |
| 28. |
A mixture of sand and naphthalene can be separated by |
| A. | Fractional distillation |
| B. | Sublimation |
| C. | Chromatography |
| D. | Any of them |
| Answer» C. Chromatography | |
| 29. |
The enzyme that converts glucose to ethyl alcohol is |
| A. | Maltase |
| B. | Zymase |
| C. | Diastase |
| D. | Invertase |
| Answer» C. Diastase | |
| 30. |
When formaldehyde and potassium hydroxide are heated , we get |
| A. | Acetylene |
| B. | Methyl alcohol |
| C. | Methane |
| D. | Ethyl formate |
| Answer» C. Methane | |
| 31. |
Name the Scientist who stated that matter can be converted into energy |
| A. | Boyle |
| B. | Lavoisier |
| C. | Avogadro |
| D. | Einstein |
| Answer» E. | |
| 32. |
A ‘breath test’ used by traffic police to check drunken driving uses ____? |
| A. | Turmeric on filter paper |
| B. | Silica gel coated with silver nitrate |
| C. | potassium permanganate-sulphuric acid |
| D. | Potassium dichromatic-sulphuric acid |
| Answer» E. | |
| 33. |
Among the given nutrients, milk is a poor source of |
| A. | Calcium |
| B. | Protein |
| C. | Vitamin C |
| D. | Carbohydrates |
| Answer» D. Carbohydrates | |
| 34. |
What is the structure of IF7 ? |
| A. | Triagonal bipyramid |
| B. | Pentagonal bipyramid |
| C. | Square pyramid |
| D. | tetrahedral |
| Answer» C. Square pyramid | |
| 35. |
Brass gets discoloured in air because of the presence of which of the following gases in air ? |
| A. | Hydrogen sulphide |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Carbon dioxide |
| Answer» B. Oxygen | |
| 36. |
Which one of the following is not a mixture |
| A. | air |
| B. | mercury |
| C. | milk |
| D. | cement |
| Answer» C. milk | |
| 37. |
SI unit of equivalent conductance |
| A. | ohm/cm |
| B. | Siemens m2/equivalent |
| C. | Siemens/equivalent |
| D. | mho/cm |
| Answer» C. Siemens/equivalent | |
| 38. |
Which of the following is a non metal that remains liquid at room temperature ? |
| A. | Chlorine |
| B. | Phosphorous |
| C. | Bromine |
| D. | Helium |
| Answer» D. Helium | |
| 39. |
Hydrogen bomb is based on the principle of |
| A. | nuclear fission |
| B. | nuclear fusion |
| C. | natural radioactivity |
| D. | artificial radioactivity |
| Answer» C. natural radioactivity | |