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. |
What do you understand by the term Espuma ? |
| A. | oam |
| B. | oap |
| C. | alt |
| D. | alcium |
| Answer» B. oap | |
| 2. |
A substance which readily forms colloidal solution in contact with water is called |
| A. | xtrinsic colloid |
| B. | ssociated colloid |
| C. | ydrophobic colloid |
| D. | ydrophilic colloid |
| Answer» E. | |
| 3. |
Which one of the following is an example of a gel ? |
| A. | heese |
| B. | ilk |
| C. | ace cream |
| D. | having cream |
| Answer» D. having cream | |
| 4. |
The scientist who experimentally proved the existence of positron is |
| A. | ermi |
| B. | nderson |
| C. | ohr |
| D. | ethe |
| Answer» C. ohr | |
| 5. |
When cathode rays strike a target of high atomic weight, they give rise to |
| A. | lpha-rays |
| B. | eta and gamma rays |
| C. | -rays |
| D. | ositive rays |
| Answer» D. ositive rays | |
| 6. |
Two electrons in an orbital are differentiated by which of the following ? |
| A. | agnetic quantum number |
| B. | pin quantum number |
| C. | rincipal quantum number |
| D. | zimuthal quantum number |
| Answer» C. rincipal quantum number | |
| 7. |
A subshell with l = 2 can take up |
| A. | electron |
| B. | electron |
| C. | electron |
| D. | 0 electron |
| Answer» E. | |
| 8. |
Commercially, sodium bicarbonate is known as |
| A. | ashing soda |
| B. | aking soda |
| C. | leaching powder |
| D. | oda ash |
| Answer» C. leaching powder | |
| 9. |
Cement containing excess amount of lime |
| A. | racks during setting |
| B. | ecomes more strong |
| C. | s slow setting |
| D. | s quick setting |
| Answer» C. s slow setting | |
| 10. |
The element absorbed both in cation and anion form is |
| A. | ulphur |
| B. | itrogen |
| C. | alcium |
| D. | hosphorus |
| Answer» C. alcium | |
| 11. |
The chemical name of 'Plaster of Paris' commonly used for setting broken bones is |
| A. | alcium nitrate |
| B. | alcium sulphate |
| C. | alcium carbonate |
| D. | alcium chloride |
| Answer» C. alcium carbonate | |
| 12. |
Setting of plaster of paris involves |
| A. | ehydration process |
| B. | ydration to form other hydrates |
| C. | xidation process |
| D. | eduction process |
| Answer» C. xidation process | |
| 13. |
Chile saltpeter is the common name of: |
| A. | odium nitrate |
| B. | otassium nitrite |
| C. | otassium nitrate |
| D. | odium nitrite |
| Answer» B. otassium nitrite | |
| 14. |
Baryllium Sulphate is less soluble in water due to |
| A. | igh inflammable energy |
| B. | ow Energy of dissociation |
| C. | ow inflammable energy |
| D. | onic band |
| Answer» B. ow Energy of dissociation | |
| 15. |
The chemical substance present in bones and teeth is |
| A. | alcium phosphate |
| B. | alcium chloride |
| C. | alcium sulphate |
| D. | alcium borate |
| Answer» B. alcium chloride | |
| 16. |
Which of the following is not a precious/semi-precious stone? |
| A. | apphire |
| B. | uby |
| C. | earl |
| D. | merald |
| Answer» D. merald | |
| 17. |
Stalactites and Stalagmites form due to the precipitation of : |
| A. | aCO3 |
| B. | aCl2 |
| C. | gCl2 |
| D. | gCO3 |
| Answer» B. aCl2 | |
| 18. |
'Plaster of Paris' is made by partial dehydration of |
| A. | psom salt |
| B. | ypsum salt |
| C. | lue vitriol |
| D. | reen vitriol |
| Answer» C. lue vitriol | |
| 19. |
Cement is made hard with |
| A. | ehydration |
| B. | ydration and dissociation of water |
| C. | issociation of water |
| D. | olymerisation |
| Answer» C. issociation of water | |
| 20. |
Bone ash contains |
| A. | alcium sulphate |
| B. | hosphoric sulphate |
| C. | alcium phosphate |
| D. | alcium hypophosphate |
| Answer» D. alcium hypophosphate | |
| 21. |
Bayer's reagent is |
| A. | lkaline potassium permanganate |
| B. | cidified potassium permanganate |
| C. | ydrogen peroxide |
| D. | romine water |
| Answer» B. cidified potassium permanganate | |
| 22. |
Asbestos is formed of : |
| A. | alcium and Magnesium |
| B. | opper, Zinc and Manganese |
| C. | ead and Iron |
| D. | alcium and Zinc |
| Answer» B. opper, Zinc and Manganese | |
| 23. |
Which one of the following elements is used in the manufacture of fertilizers ? |
| A. | luorine |
| B. | otassium |
| C. | ead |
| D. | luminium |
| Answer» C. ead | |
| 24. |
Which of the following is used as a preservative to protect processed food? |
| A. | odium sulphate |
| B. | accharin |
| C. | HT |
| D. | odium metabisulphite |
| Answer» E. | |
| 25. |
Which gas is most stable at room temperature? |
| A. | 2 |
| B. | 2 |
| C. | 2 |
| D. | 2 |
| Answer» C. 2 | |
| 26. |
The addition of gypsum to portland cement helps in : |
| A. | ncreasing the strength of cement |
| B. | apid setting of cement |
| C. | reventing rapid setting of cement |
| D. | eduction in the cost of cement |
| Answer» D. eduction in the cost of cement | |
| 27. |
Which one of the following is not present in cement ? |
| A. | lay |
| B. | lumina |
| C. | lum |
| D. | ypsum |
| Answer» D. ypsum | |
| 28. |
Which one of the following is found in kidney stones? |
| A. | odium oxalate |
| B. | alcium oxalate |
| C. | odium chloride |
| D. | alcium acetate |
| Answer» C. odium chloride | |
| 29. |
Fertiliser having high nitrogen content is : |
| A. | rea |
| B. | mmonium sulphate |
| C. | mmonium nitrate |
| D. | alcium citrate |
| Answer» D. alcium citrate | |
| 30. |
What is the most common salt in sea water ? |
| A. | alcium carbonate |
| B. | otassium chloride |
| C. | odium chloride |
| D. | agnesium sulphate |
| Answer» D. agnesium sulphate | |
| 31. |
Ruby and sapphire are oxides of |
| A. | opper |
| B. | in |
| C. | ron |
| D. | luminium |
| Answer» E. | |
| 32. |
Which metal is the heaviest in periodic table among the following ? |
| A. | s |
| B. | t |
| C. | b |
| Answer» B. t | |
| 33. |
An element of atomic no. 29 belongs to |
| A. | -block |
| B. | -block |
| C. | -block |
| D. | -block |
| Answer» C. -block | |
| 34. |
Which of the following molecules has a bond order of 2.5? |
| A. | CL |
| B. | O |
| C. | 2 |
| D. | O |
| Answer» D. O | |
| 35. |
What is the atomic number of mercury? |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 0 |
| Answer» E. | |
| 36. |
Which one is heaviest naturally occurring element of the periodic element? |
| A. | ron |
| B. | horium |
| C. | hodium |
| D. | ranium |
| Answer» E. | |
| 37. |
Which one of the following elements exhibits the greatest tendency to lose electrons ? |
| A. | luorine |
| B. | ithium |
| C. | xygen |
| D. | inc |
| Answer» C. xygen | |
| 38. |
Heavy metals got their name because compared to other atoms they have |
| A. | igher densities |
| B. | igher atomic masses |
| C. | igher atomic numbers |
| D. | igher atomic radii |
| Answer» C. igher atomic numbers | |
| 39. |
An example of heterocyclic compound is |
| A. | aphthalene |
| B. | uran |
| C. | enzene |
| D. | nthracene |
| Answer» C. enzene | |
| 40. |
Who modified Bohr's theory by introducing elliptical orbits for electron path? |
| A. | und |
| B. | homson |
| C. | utherford |
| D. | ommerfeld |
| Answer» E. | |
| 41. |
The number of neutrons present in an element having mass number 226 and atomic number 88 is : |
| A. | 8 |
| B. | 38 |
| C. | 14 |
| D. | 0 |
| Answer» C. 14 | |
| 42. |
How many neutrons are there in 92U238 atom ? |
| A. | 2 |
| B. | 38 |
| C. | 46 |
| D. | 30 |
| Answer» D. 30 | |
| 43. |
The oxidation number of nickel in K4[Ni(CN)4] is |
| A. | ero |
| B. | 4 |
| C. | 4 |
| D. | 8 |
| Answer» B. 4 | |
| 44. |
Oxygen has (+) oxidation number only in |
| A. | F2 |
| B. | 12O |
| C. | 2O (2) |
| D. | 2O |
| Answer» B. 12O | |
| 45. |
Urea is a |
| A. | odium fertilizer |
| B. | hosphatic fertilizer |
| C. | itrogenous fertilizer |
| D. | otassium fertilizer |
| Answer» D. otassium fertilizer | |
| 46. |
Quartz is a crystalline form of |
| A. | lumina |
| B. | lass |
| C. | ilica |
| D. | imestone |
| Answer» D. imestone | |
| 47. |
Which of the following is the main nitrogenous waste in humans ? |
| A. | mmonia |
| B. | rea |
| C. | ric Acid |
| D. | mmonium Nitrate |
| Answer» D. mmonium Nitrate | |
| 48. |
Sodium bicarbonate is commercially known as |
| A. | ashing soda |
| B. | aking soda |
| C. | austic soda |
| D. | oda lime |
| Answer» C. austic soda | |
| 49. |
Cement is usually a mixture of : |
| A. | alcium silicate and calcium aluminate |
| B. | alcium silicate and calcium ferrate |
| C. | alcium aluminate and calcium ferrate |
| D. | ime stone and silicon dioxide |
| Answer» B. alcium silicate and calcium ferrate | |
| 50. |
Interveinal necrotic spots on leaves appear due to |
| A. | F injury |
| B. | O2 injury |
| C. | O2 injury |
| D. | 3 injury |
| Answer» C. O2 injury | |