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. |
Soap is a mixture of sodium or potassium salts of-- |
| A. | Monocarboxylic acid |
| B. | Glycerols |
| C. | Dicarboxylic acid |
| D. | Tricarboxylic acid |
| Answer» B. Glycerols | |
| 2. |
The combustible material at the tip of a safety match stick is -- |
| A. | Sulphur |
| B. | Manganese dioxide |
| C. | Phosphorus |
| D. | Antimony sulphide |
| Answer» E. | |
| 3. |
Paper is manufactured by -- |
| A. | Wood and resin |
| B. | Wood, Sodium and Bleaching powder |
| C. | Wood and bleaching powder |
| D. | Wood, Calcium, hydrogen sulphate and resin |
| Answer» E. | |
| 4. |
Which of the following roofs provide better protection against fire ? |
| A. | Cement slab |
| B. | Asbestos sheet |
| C. | Reinforced concrete |
| D. | None of these |
| Answer» C. Reinforced concrete | |
| 5. |
Deep blue colour is imparted to glass by the presence of -- |
| A. | Iron oxide |
| B. | Cupric oxide |
| C. | Nickel oxide |
| D. | Cobalt oxide |
| Answer» E. | |
| 6. |
Rubber is coagulated from latex by adding -- |
| A. | Hydrochloric acid |
| B. | Acetic acid |
| C. | Sulphuric acid |
| D. | Carbonic acid |
| Answer» C. Sulphuric acid | |
| 7. |
Which of the following fibres is generally preferred for making gauze and lint ? |
| A. | Cotton |
| B. | Rayon |
| C. | Nylon |
| D. | Terylene |
| Answer» C. Nylon | |
| 8. |
Which synthetic fibre is known as artificial silk ? |
| A. | Cotton |
| B. | Rayon |
| C. | Terylene |
| D. | Nylon |
| Answer» C. Terylene | |
| 9. |
Which of following is used as a filter in rubber tyres? |
| A. | Graphite |
| B. | Coal |
| C. | Coke |
| D. | Carbon Black |
| Answer» E. | |
| 10. |
In vulcanization, natural rubber is heated with -- |
| A. | Carbon |
| B. | Sulphur |
| C. | Silicon |
| D. | Phosphorus |
| Answer» C. Silicon | |
| 11. |
Which of the following is used for removing air bubbles from glass during its manufacture ? |
| A. | Fledspar |
| B. | Arsenic oxide |
| C. | Potassium Carbonate |
| D. | Soda Ash |
| Answer» C. Potassium Carbonate | |
| 12. |
Which is/ are the important raw materials in cement industry ? |
| A. | Limestone |
| B. | Gypsum u0026 Clay |
| C. | Clay |
| D. | Limestone u0026 Clay |
| Answer» E. | |
| 13. |
Which variety of glass is heat resistant ? |
| A. | Hard glass |
| B. | Flint glass |
| C. | Pyrex glass |
| D. | Bottle glass |
| Answer» D. Bottle glass | |
| 14. |
Which of the following is used in making artificial sweetener saccharine ? |
| A. | Benzene |
| B. | Toluene |
| C. | Phenol |
| D. | Aniline |
| Answer» C. Phenol | |
| 15. |
What are soaps ? |
| A. | Salts of silicates |
| B. | Ester of heavy fatty acids |
| C. | Sodium or potassium salts of heavier fatty acids |
| D. | Mixture of glycerol and alcohol |
| Answer» D. Mixture of glycerol and alcohol | |
| 16. |
The first synthetic fibre made by man was -- |
| A. | Rayon |
| B. | Nylon |
| C. | Polyester |
| D. | Terycott |
| Answer» C. Polyester | |
| 17. |
The neutral atom's two isotopes differ in the number of - |
| A. | Electron shells |
| B. | Protons |
| C. | Valence electrons |
| D. | Neutrons |
| Answer» E. | |
| 18. |
According to Dalton's atomic theory the smallest particle which can exist independently is - |
| A. | An atom |
| B. | A molecule |
| C. | A cation |
| D. | An anion |
| Answer» B. A molecule | |
| 19. |
The recent atomic weight scale is based on - |
| A. | 1H1 |
| B. | 1H2 |
| C. | 6C12 |
| D. | 8O16 |
| Answer» D. 8O16 | |
| 20. |
Optical fibres are mainly used in - |
| A. | Communication |
| B. | Weaving |
| C. | Musical Instruments |
| D. | Food Industry |
| Answer» B. Weaving | |
| 21. |
Which of the following elements is non-radioactive? |
| A. | Uranium |
| B. | Thorium |
| C. | Plutonium |
| D. | Zirconium |
| Answer» E. | |
| 22. |
In an atomic nucleus, neutrons and protons are held together by - |
| A. | Gravitational forces |
| B. | Magnetic forces |
| C. | Exchange forces |
| D. | Coulombic forces |
| Answer» D. Coulombic forces | |
| 23. |
Old-written material, which cannot be read easily can be read by - |
| A. | Cosmic Rays |
| B. | Ultraviolet rays |
| C. | Infra Red rays |
| D. | None of these |
| Answer» D. None of these | |
| 24. |
The location and energy of an electron in an atom can be specified by - |
| A. | Atomic mass |
| B. | Atomic number |
| C. | Quantum numbers |
| D. | None of these |
| Answer» D. None of these | |
| 25. |
Who suggested that the most of the mass of atom is located in nucleus ? |
| A. | Bohr |
| B. | Thomson |
| C. | Rutherford |
| D. | Avogadro |
| Answer» D. Avogadro | |
| 26. |
An atom of an element with mass number 23 and atomic number 11 will have - |
| A. | 11 neutrons, 12 protons and 11 electrons |
| B. | 11 protons, 12 neutrons and 11 electrons |
| C. | 11 protons, 12 electrons and 11 neutrons |
| D. | 23 protons and 11 electrons |
| Answer» C. 11 protons, 12 electrons and 11 neutrons | |
| 27. |
Meson particles are found in - |
| A. | R-rays |
| B. | X-rays |
| C. | Laser beam |
| D. | Cosmic rays |
| Answer» E. | |
| 28. |
The age of most ancient geological formation is estimated by - |
| A. | Potassium-Argon method |
| B. | Ra-Si method |
| C. | C14 method |
| D. | Uranium-lead method |
| Answer» D. Uranium-lead method | |
| 29. |
Atoms are composed of - |
| A. | Electrons only |
| B. | Protons only |
| C. | Electrons u0026 Protons |
| D. | Electrons u0026 Nuclei |
| Answer» E. | |
| 30. |
Isotopes are separated by - |
| A. | Filtration |
| B. | Sublimation |
| C. | Distillation |
| D. | Crystalization |
| Answer» D. Crystalization | |
| 31. |
Which of the following is used as a moderator in nuclear reactor ? |
| A. | Ordinary water |
| B. | Radium |
| C. | Thorium |
| D. | Graphite |
| Answer» E. | |
| 32. |
Radioactive disintegration of Uranium ultimately results in formation of - |
| A. | Radium |
| B. | Thorium |
| C. | Polonium |
| D. | Lead |
| Answer» E. | |
| 33. |
What is increasing order of the wave lengths of the following colours -1. Orange2. Indigo3. Yellow4. Violet |
| A. | 1, 2, 3, 4 |
| B. | 3, 4, 1, 2 |
| C. | 4, 3, 2, 1 |
| D. | 4, 2, 3, 1 |
| Answer» E. | |
| 34. |
Atom bomb is made on the basis of - |
| A. | Nuclear fusion |
| B. | Nuclear fission |
| C. | Both |
| D. | None of these |
| Answer» C. Both | |
| 35. |
Which radioactive pollutant has recently drawn the attention of the public due to its occurance in the building materials ? |
| A. | Radium |
| B. | Radon |
| C. | Thorium |
| D. | Plutonium |
| Answer» D. Plutonium | |
| 36. |
In an atomic explosion enormous energy is released which is due to the - |
| A. | Conversions of neutrons into protons |
| B. | Conversion of chemical energy into nuclear energy |
| C. | Conversion of mechanical energy into nuclear energy |
| D. | Conversion of mass into energy |
| Answer» E. | |
| 37. |
Which of the following is used as a coolant in nuclear reactors ? |
| A. | Heavy water |
| B. | Cadmium |
| C. | Liquid sodium |
| D. | Graphite |
| Answer» D. Graphite | |
| 38. |
Which of the following has least penetrating power? |
| A. | Alpha particles |
| B. | Beta particles |
| C. | Gamma particles |
| D. | All have same power |
| Answer» B. Beta particles | |
| 39. |
The isotope of Uranium capable of sustaining chain reaction is - |
| A. | U 235 |
| B. | U 238 |
| C. | U 239 |
| D. | None of these |
| Answer» B. U 238 | |
| 40. |
Long distance photography is facilitated by - |
| A. | Visible light |
| B. | X-rays |
| C. | Infra Red rays |
| D. | Ultra violet rays |
| Answer» D. Ultra violet rays | |
| 41. |
Which is a good nuclear fuel ? |
| A. | Uranium - 238 |
| B. | Neptunium - 239 |
| C. | Thorium - 236 |
| D. | Plutonium - 236 |
| Answer» D. Plutonium - 236 | |
| 42. |
MGNREGA was launched in Uttar Pradesh in which year ? |
| A. | 2005 |
| B. | 2006 |
| C. | 2007 |
| D. | 2008 |
| Answer» E. | |
| 43. |
Starch hydrolysing enzyme is - |
| A. | sucrose |
| B. | invertase |
| C. | amylase |
| D. | cellulase |
| Answer» D. cellulase | |
| 44. |
The enzyme used for the formation of RNA on DNA is - |
| A. | DNA polymerase |
| B. | endonuclease |
| C. | topoisomerase |
| D. | RNA polymerase |
| Answer» E. | |
| 45. |
Sterility in some animals is caused due to deficiency of - |
| A. | vitamin B |
| B. | vitamin D |
| C. | vitamin B12 |
| D. | vitamin E |
| Answer» C. vitamin B12 | |
| 46. |
The vitamin which can be synthesized in the gut by bacterial action is - |
| A. | vitamin B1 |
| B. | vitmain B2 |
| C. | vitmain B12 |
| D. | All above |
| Answer» B. vitmain B2 | |
| 47. |
At the boiling temperature an enzyme becomes - |
| A. | killed |
| B. | denatured |
| C. | uneffected |
| D. | inactivated |
| Answer» C. uneffected | |
| 48. |
Which one of the following is the best source of vitamin A? |
| A. | Apple |
| B. | Carrot |
| C. | Amla |
| D. | Raddish |
| Answer» E. | |
| 49. |
Richest source of vitamin B1 (thiamine) is - |
| A. | cod liver oil |
| B. | curd |
| C. | whole bread meal |
| D. | eggs |
| Answer» E. | |
| 50. |
Deficiency of vitamin D causes - |
| A. | rickets |
| B. | beri-beri |
| C. | scurvy |
| D. | night blindness |
| Answer» C. scurvy | |