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 of the following metals does not react with water to produce hydrogen? |
| A. | potassium |
| B. | cadmium |
| C. | lithium |
| D. | sodium |
| Answer» C. lithium | |
| 2. |
The phenomenon of excitation of electrons when light of a suitable wavelength falls on the surface of metals is called |
| A. | galvanic isolation |
| B. | volume |
| C. | photoelectric effect |
| D. | none of these |
| Answer» D. none of these | |
| 3. |
Which alloy is used to make thermal components for electrothermal equipment? |
| A. | solder |
| B. | Metal Alloys |
| C. | nichrome |
| D. | German Silver |
| Answer» D. German Silver | |
| 4. |
Which metal melts when kept on the palm? |
| A. | gallium |
| B. | sodium |
| C. | aluminum |
| D. | potassium |
| Answer» B. sodium | |
| 5. |
How is the constitution of India? |
| A. | developed constitution |
| B. | medium size constitution |
| C. | The most concise constitution |
| D. | most comprehensive constitution |
| E. | |
| Answer» E. | |
| 6. |
The alloy made from which metal is used to make parts of airplanes and railway coaches? |
| A. | copper |
| B. | Iron |
| C. | aluminum |
| D. | none of these |
| Answer» D. none of these | |
| 7. |
Brass is a mixture of which of the following - |
| A. | copper and zinc |
| B. | copper and tin |
| C. | copper and silver |
| D. | copper and nickel |
| Answer» B. copper and tin | |
| 8. |
Which of the following glass is used for sunglasses? |
| A. | crooks glass |
| B. | pyrex glass |
| C. | crystal glass |
| D. | none of the above |
| Answer» B. pyrex glass | |
| 9. |
Evidence of only fossil was found in India - |
| A. | Maharashtra |
| B. | Shivalik Hill |
| C. | Madhya Pradesh |
| D. | Tamil Nadu |
| Answer» C. Madhya Pradesh | |
| 10. |
Identify the metal which is non-toxic type |
| A. | Chromium |
| B. | Gold |
| C. | cadmium |
| D. | cobalt |
| Answer» C. cadmium | |
| 11. |
The non-metal found in liquid state is - |
| A. | fluorine |
| B. | nitrogen |
| C. | bromine |
| D. | chlorine |
| Answer» D. chlorine | |
| 12. |
Mercury is used in ordinary thermometers because of its characteristic - |
| A. | high density |
| B. | high melting point |
| C. | high operating power |
| D. | high specific heat |
| Answer» D. high specific heat | |
| 13. |
Bronze is an alloy of which of the following - |
| A. | copper and zinc |
| B. | tin and zinc |
| C. | copper and tin |
| D. | iron and zinc |
| Answer» D. iron and zinc | |
| 14. |
Rule of law prevails in- |
| A. | dictatorship |
| B. | aristocracy |
| C. | Democracy |
| D. | Clan system |
| Answer» D. Clan system | |
| 15. |
Copper is purified by- |
| A. | by heating |
| B. | from oxidation |
| C. | electrolysis |
| D. | by polishing |
| Answer» D. by polishing | |
| 16. |
In which iron ore 72 percent iron is found? |
| A. | magnetite |
| B. | limonite |
| C. | hematite |
| D. | Ciderite |
| Answer» B. limonite | |
| 17. |
Galvanized iron sheets are protected from rust because they are coated with the following: |
| A. | lead |
| B. | War |
| C. | Yashad |
| D. | Chromium |
| Answer» D. Chromium | |
| 18. |
Which of the following is not an alloy - |
| A. | steel |
| B. | Brass |
| C. | bronze |
| D. | copper |
| Answer» E. | |
| 19. |
Aluminum surfaces are usually anodized. This means depositing on it - |
| A. | layer of chromium oxide |
| B. | layer of aluminum oxide |
| C. | nickel oxide layer |
| D. | layer of zinc oxide |
| Answer» C. nickel oxide layer | |
| 20. |
The type metal used in printing is an alloy of |
| A. | lead and copper |
| B. | lead and antimony |
| C. | lead and bismuth |
| D. | lead and zinc |
| Answer» C. lead and bismuth | |
| 21. |
What is the main difference between parliamentary and presidential system of government? |
| A. | its federal form |
| B. | employer-employee relationship |
| C. | legislative-executive relations |
| D. | firmness of the constitution |
| Answer» D. firmness of the constitution | |
| 22. |
Which of the following is the hardest element? |
| A. | Diamond |
| B. | lead |
| C. | Platinum |
| D. | tungsten |
| Answer» B. lead | |
| 23. |
When copper utensils are kept open in humid air for a long time, a light green substance accumulates on them. Which of the following is this green substance? |
| A. | copper hydroxide |
| B. | copper carbonate |
| C. | 1 और 2 का मिश्रण |
| D. | none of these |
| Answer» D. none of these | |
| 24. |
Mercury metal mixture is - |
| A. | ultra colored alloys |
| B. | carbon-containing alloys |
| C. | Mercury alloy |
| D. | high resistance to abrasion |
| Answer» D. high resistance to abrasion | |
| 25. |
Yellow lamps are being used in abundance in street lighting. What is used in these lamps? |
| A. | sodium |
| B. | neon |
| C. | hydrogen |
| D. | nitrogen |
| Answer» B. neon | |
| 26. |
Which of the following metals start burning when kept in open atmosphere - 1- Sodium 2- Potassium 3- Lithium |
| A. | केवल 1 और 2 |
| B. | केवल 2 और 3 |
| C. | केवल 3 |
| D. | 1, 2 और 3 |
| Answer» B. केवल 2 और 3 | |
| 27. |
Which of the following material has the highest electrical conductivity? |
| A. | Diamond |
| B. | silver |
| C. | graphite |
| D. | wood |
| Answer» C. graphite | |
| 28. |
Stitch is an alloy of - |
| A. | tin and lead |
| B. | tin and copper |
| C. | tin, copper and zinc |
| D. | tin, lead and zinc |
| Answer» B. tin and copper | |
| 29. |
Which of the following does not react with water at all? |
| A. | Iron |
| B. | lead |
| C. | magnesium |
| D. | aluminum |
| Answer» C. magnesium | |
| 30. |
Which main mineral is used to make aluminum? |
| A. | lignite |
| B. | Hematite |
| C. | magnetite |
| D. | bauxite |
| Answer» E. | |
| 31. |
There is no reaction when steam passes from above - |
| A. | aluminum |
| B. | of copper |
| C. | of carbon |
| D. | of iron |
| Answer» C. of carbon | |
| 32. |
Iron is obtained from - |
| A. | limestone |
| B. | pinch blend |
| C. | monazite |
| D. | Hematite |
| Answer» E. | |
| 33. |
How many carats is pure gold? |
| A. | 22 |
| B. | 24 |
| C. | 28 |
| D. | 23 |
| Answer» C. 28 | |
| 34. |
The salt which absorbs water is called |
| A. | hygroscopic salts |
| B. | anhydrous salts |
| C. | hydrophilic salts |
| D. | hydrophobic salts |
| Answer» B. anhydrous salts | |
| 35. |
The concept of rule of law is a special feature of the constitutional system of |
| A. | Switzerland |
| B. | France |
| C. | USA |
| D. | Britain |
| Answer» E. | |
| 36. |
Hydrochloric acid is stronger than acetic acid because - |
| A. | It has less number of hydrogen molecules. |
| B. | It gets completely ionized to produce hydrogen ions. |
| C. | It contains chlorine. |
| D. | It does not contain oxygen. |
| Answer» C. It contains chlorine. | |
| 37. |
An aqueous solution of copper sulphate is acidic in nature, because the salt contains - |
| A. | dialysis |
| B. | electrolysis |
| C. | hydrolysis |
| D. | Photolysis |
| Answer» D. Photolysis | |
| 38. |
The pH level of blood of a normal person is |
| A. | 4.4-4.5 |
| B. | 6.45-6.55 |
| C. | 7.35-7.45 |
| D. | 8.25-8.35 |
| Answer» D. 8.25-8.35 | |
| 39. |
Hydrogen is an essential component of all acids, who said it for the first time? |
| A. | Arrhenius |
| B. | by bronsted |
| C. | Davy |
| D. | by lorry |
| Answer» D. by lorry | |
| 40. |
Mohr salt is |
| A. | simple salts |
| B. | hybrid salt |
| C. | double salt |
| D. | complex salts |
| Answer» D. complex salts | |
| 41. |
Aqueous solution of ammonia chloride is - |
| A. | acidic |
| B. | alkaline |
| C. | Moody |
| D. | colorful |
| Answer» C. Moody | |
| 42. |
The pH value of neutral solution is |
| A. | 7 से कम |
| B. | 14 |
| C. | 7 |
| D. | 7 से अधिक |
| Answer» D. 7 से अधिक | |
| 43. |
The ash soluble in the following is called - |
| A. | It has a lubricity like soluble in alkali. |
| B. | The alkali turns red litmus blue. |
| C. | All alkalis are ashes but not all ashes are alkalis. |
| D. | all of the above |
| Answer» E. | |
| 44. |
The pH value of an acidic solution is |
| A. | 7 |
| B. | 7 से कम |
| C. | 7 से अधिक |
| D. | 14 |
| Answer» C. 7 से अधिक | |
| 45. |
The pH value of alkaline solution is - |
| A. | 7 से कम |
| B. | 7 से अधिक |
| C. | Zero |
| D. | 7 |
| Answer» C. Zero | |
| 46. |
The taste of the ashes is - |
| A. | saline |
| B. | Tart taste |
| C. | Sweet |
| D. | tasteless |
| Answer» B. Tart taste | |
| 47. |
The pH value of milk is |
| A. | 6.1 |
| B. | 6.6 |
| C. | 7.4 |
| D. | 8.0 |
| Answer» C. 7.4 | |
| 48. |
All salts are |
| A. | electrolytic |
| B. | electrolyte |
| C. | permanent electrolytes |
| D. | Moody |
| Answer» C. permanent electrolytes | |
| 49. |
Sovereignty is an essential element of- |
| A. | Nation |
| B. | free nation |
| C. | Association |
| D. | state |
| Answer» C. Association | |
| 50. |
Which is used to test for acid and ash? |
| A. | litmus paper |
| B. | cobalt letter |
| C. | ammonia letter |
| D. | none of these |
| Answer» B. cobalt letter | |