McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) , Union Public Service Commission (UPSC) , Indian Administrative Service (IAS) , Staff Selection Commission (SSC) .
Chapters
| 251. |
Which among the following is the lowest atomic number element without any stable isotopes? |
| A. | Technetium |
| B. | Molybdenum |
| C. | Ruthenium |
| D. | Niobium |
| Answer» A. Technetium | |
| 252. |
Which among the following is the main constituent of malleable metal alloy Pewter ? |
| A. | Copper |
| B. | Zinc |
| C. | Tin |
| D. | Bismuth |
| Answer» C. Tin | |
| 253. |
How many parts are of other metals in a 17 carat Gold? |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» C. 7 | |
| 254. |
Which among the following does not come under carbon Group of Periodic Table? |
| A. | silicon |
| B. | germanium |
| C. | tin |
| D. | selenium |
| Answer» D. selenium | |
| 255. |
Which among the following is not correctly matched? |
| A. | Sodium: Natrium |
| B. | Pottassium : Kalium |
| C. | Mercury :Hydrargyrum |
| D. | Arsenic : Stibium |
| Answer» D. Arsenic : Stibium | |
| 256. |
The chemical oxygen demand COD test is commonly used to measure which of the following? |
| A. | amount of organic compounds in water |
| B. | amount of oxygen in water |
| C. | amount of oxygen in a chemical |
| D. | amount of oxygen used in a oxygenation process |
| Answer» A. amount of organic compounds in water | |
| 257. |
Which among the following is an organic mineral? |
| A. | Amber |
| B. | Hornblende |
| C. | Angite |
| D. | Analcime |
| Answer» A. Amber | |
| 258. |
Liming is the application of calcium and magnesium rich materials to soil in various forms, including marl, chalk, limestone, or hydrated lime. What is the purpose of liming? |
| A. | Increase the Soil pH |
| B. | Increase the bacteria activity |
| C. | Both A & B |
| D. | Decrease the bacterial activity |
| Answer» C. Both A & B | |
| 259. |
Who among the following established that genetic code of all organisms is spelled out in three-letter words, each set of three nucleotides codes for a specific amino acid? |
| A. | Hargobind Khorana |
| B. | Barbara McClintock |
| C. | Theodor O. Diener |
| D. | Joseph L. Goldstein |
| Answer» A. Hargobind Khorana | |
| 260. |
Which among the following is a main component of some alert tablets such as Alert, No Doz, Stay Awake & Vivarin? |
| A. | Thein |
| B. | Caffeine |
| C. | Nicotine |
| D. | catechins |
| Answer» B. Caffeine | |
| 261. |
Which among the following compound of barium is used as radio contrast agent for X-ray imaging and other diagnostic procedures and also commonly called as Barium Food? |
| A. | Barium Carbonate |
| B. | Barium Sulphate |
| C. | Barium Bromide |
| D. | Barium hydroxide |
| Answer» B. Barium Sulphate | |
| 262. |
Which among the following is used as an antidote? |
| A. | Paracetamol |
| B. | Nicotine |
| C. | Thiamine |
| D. | Activated Charcoal |
| Answer» D. Activated Charcoal | |
| 263. |
Which among the following will undergo a chemical reaction depending on the pH of the solution? |
| A. | Calcium Oxide |
| B. | Zinc Oxide |
| C. | Ferric Oxide |
| D. | Ferrous Oxide |
| Answer» B. Zinc Oxide | |
| 264. |
Bring out the statement which is wrong: |
| A. | Acetone is used as a solvent |
| B. | Adrenaline is used in the event of heart failure |
| C. | graphite is an example of allotropy |
| D. | All are correct |
| Answer» D. All are correct | |
| 265. |
Which among the following basic atoms are must in an Alkaloid? |
| A. | Sodium |
| B. | Nitrogen |
| C. | Magnesium |
| D. | Potassium |
| Answer» B. Nitrogen | |
| 266. |
F block elements in the periodic table which are commonly called Lanthanides have the following atomic numbers: |
| A. | 57-70 |
| B. | 58-71 |
| C. | 59-72 |
| D. | 58-70 |
| Answer» B. 58-71 | |
| 267. |
The volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules regardless of the nature of the gas. This concept is called as___? |
| A. | Avogadro‘s law |
| B. | Dalton‘s law |
| C. | Henry‘s law |
| D. | Ideal gas law |
| Answer» A. Avogadro‘s law | |
| 268. |
Who among the following is known to manufacture first Cyclotron? |
| A. | Ernest Lawrence |
| B. | Niels Bohr |
| C. | Rutherford |
| D. | Max Born |
| Answer» A. Ernest Lawrence | |
| 269. |
British Scientist JJ Thomson was awarded Nobel prize in Physics in 1906 for discovery of which of the following particle? |
| A. | Electron |
| B. | Proton |
| C. | Neutron |
| D. | Radio activity |
| Answer» A. Electron | |
| 270. |
Charles Goodyear is known for which of the following? |
| A. | Experiments on Rubber Plants |
| B. | Vulcanization of Rubber |
| C. | Invention of Radial Tyres |
| D. | Invention of Artificial Rubber |
| Answer» B. Vulcanization of Rubber | |
| 271. |
Which among the following gas is used in Balloons? |
| A. | Hydrogen |
| B. | Helium |
| C. | Nitrogen |
| D. | Oxygen |
| Answer» B. Helium | |
| 272. |
Which among the following is the most important characteristic of Noble metals? |
| A. | Luster |
| B. | Non reactive nature |
| C. | Preciousness |
| D. | Rare availability |
| Answer» B. Non reactive nature | |
| 273. |
What is the atomic number of Transuranic elements? |
| A. | Greater than 90 |
| B. | Greater than 92 |
| C. | Greater than 91 |
| D. | Greater than 93 |
| Answer» B. Greater than 92 | |
| 274. |
A Cyclotron is ___? |
| A. | A charged particle |
| B. | A particle Accelerator |
| C. | A magnetic particle |
| D. | A radioactive particle |
| Answer» B. A particle Accelerator | |
| 275. |
Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight. An increasing amount of Iron will result in which of the following? |
| A. | Increase Hardening |
| B. | Decrease Hardening |
| C. | Increase ductility |
| D. | Increase melting Point |
| Answer» A. Increase Hardening | |
| 276. |
Cassiterite is an ore of which of the following ? |
| A. | Iron |
| B. | Zinc |
| C. | Copper |
| D. | Tin |
| Answer» D. Tin | |
| 277. |
Which of the following are found in nucleus of Deuterium |
| A. | 1 proton & 1 neutron |
| B. | 2 protons |
| C. | 1 proton and 1 electron |
| D. | 2 neutrons only |
| Answer» A. 1 proton & 1 neutron | |
| 278. |
Which among the following provides the centripetal force to an electron circulating around the nucleus? |
| A. | electrostatic forces of repulsion |
| B. | electrostatic force of attraction |
| C. | speed of the electron |
| D. | nuclear charge |
| Answer» B. electrostatic force of attraction | |
| 279. |
Which among the following of a catalyst does not change at the end of a reaction? |
| A. | Quantity |
| B. | Chemical Composition |
| C. | Both Quantity and Chemical com position |
| D. | None of the above |
| Answer» C. Both Quantity and Chemical com position | |
| 280. |
The noble gases are a group of chemical elements with very similar properties: under standard conditions, they are all odorless, colorless, monatomic gases, with a very low chemical reactivity. How many Noble gases occur naturally? |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» B. 6 | |
| 281. |
Hard Water contains which of the following? |
| A. | Aluminum |
| B. | Chlorine |
| C. | Calcium |
| D. | Zinc |
| Answer» C. Calcium | |
| 282. |
Which among the following is an ionic solid? |
| A. | Diamond |
| B. | Dry ice |
| C. | Table salt |
| D. | All are ionic solids |
| Answer» C. Table salt | |
| 283. |
Which among the following statements about Ozone is INCORRECT? |
| A. | It is found in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth‘s surface |
| B. | It is lighter than oxygen that is why it is found in the upper atmosphere |
| C. | It is an allotrope of oxygen |
| D. | All are correct |
| Answer» B. It is lighter than oxygen that is why it is found in the upper atmosphere | |
| 284. |
Which among the following is correct ? |
| A. | Oxidation takes place at Cathode and Reduction Takes Place at Anode |
| B. | Oxidation takes place at Anode and Reduction Takes place at Cathode |
| C. | Both Oxidation and Reduction takes place at cathode |
| D. | Both Oxidation and Reduction takes place at Anode |
| Answer» B. Oxidation takes place at Anode and Reduction Takes place at Cathode | |
| 285. |
The atomic weight of Chlorine is 35. It consists of _______? |
| A. | 17 Protons + 18 Neutrons |
| B. | 17 Neutrons + 18 protons |
| C. | 17 Neutrons + 17 Protons + 1 electron |
| D. | None of the above |
| Answer» A. 17 Protons + 18 Neutrons | |
| 286. |
When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______? |
| A. | 90% |
| B. | 91.67% |
| C. | 95.5% |
| D. | 98% |
| Answer» B. 91.67% | |
| 287. |
An Jewellery was left exposed to the atmosphere for some time and it becomes coated with green carbonate. The Jewellery is made up of which of the following? |
| A. | Copper |
| B. | Silver |
| C. | Zinc |
| D. | Gold |
| Answer» A. Copper | |
| 288. |
The process of purifying water by spraying water on to a bed of stones where microorganism live so that the microorganisms feed on the pathogens in water and make the water free from harmful pathogens is called? |
| A. | Stone bed method |
| B. | biofilter method |
| C. | aerobic filtration |
| D. | anerobic filtration |
| Answer» B. biofilter method | |
| 289. |
As per Avogadro‘s hypothesis , equal volumes of different gases at the same temperature and pressure contain equal number of ______? |
| A. | Atoms |
| B. | Molecules |
| C. | Particles |
| D. | Electrons |
| Answer» B. Molecules | |
| 290. |
Duralumin which is used in making aero planes is an alloy consisting of _____? |
| A. | Aluminum & Copper |
| B. | Aluminum, Copper & Manganese |
| C. | Aluminum, Copper, Manganese & Magnesium |
| D. | Aluminum and zinc |
| Answer» C. Aluminum, Copper, Manganese & Magnesium | |
| 291. |
Which among the following was the first artificially produced element? |
| A. | Neptunium |
| B. | Ununbium |
| C. | Technetium |
| D. | none of the above |
| Answer» C. Technetium | |
| 292. |
Froth & Foams are examples of which of the following ? |
| A. | solid suspended in gas |
| B. | liquid suspended in gas |
| C. | gas suspended in liquid |
| D. | gas suspended in solid |
| Answer» C. gas suspended in liquid | |
| 293. |
Which among the following is most electronegative element? |
| A. | Chlorine |
| B. | FLourine |
| C. | Bromine |
| D. | All of them have same electronegativity |
| Answer» B. FLourine | |
| 294. |
What is the main use of Bisphenol A drug ? |
| A. | A drug which was used by sports persons for doping |
| B. | A chemical compound which is used in plastics used for food packaging |
| C. | An alloy which is used in cans of cola drinks |
| D. | None of the above |
| Answer» B. A chemical compound which is used in plastics used for food packaging | |
| 295. |
Which among the following is not a constituent of gobar gas? |
| A. | Methane |
| B. | Propane |
| C. | Carbondioxide |
| D. | All are constiuents of Gobar gas |
| Answer» B. Propane | |
| 296. |
Which among the following is incorrect regarding the chemical nature of Diamond & Graphite? |
| A. | Density of Diamond is higher than that of Graphite |
| B. | Diamond is chemically unreactive while graphite is mild reactive |
| C. | Both Diamond and Graphite are good conductors of electricity |
| D. | None of the above |
| Answer» C. Both Diamond and Graphite are good conductors of electricity | |
| 297. |
Galvanizing is a metallurgical process that is used to coat steel or iron with which of the following? |
| A. | Zinc |
| B. | Lead |
| C. | Chromium |
| D. | Copper |
| Answer» A. Zinc | |
| 298. |
Which among the following is Quick Silver? |
| A. | Aluminium |
| B. | Mercury |
| C. | Lead |
| D. | Zinc |
| Answer» B. Mercury | |
| 299. |
The primary part of Liquefied Petroleum Gas LPG is ______? |
| A. | Butance |
| B. | Methane |
| C. | Propane |
| D. | Ethane |
| Answer» C. Propane | |
| 300. |
Which among the following explains the radiation emitted by black bodies? |
| A. | Big-bang theory |
| B. | Quantum Theory |
| C. | Piezoelectric Effect |
| D. | None of the above |
| Answer» B. Quantum Theory | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.