MCQOPTIONS
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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
The two elements that exist as liquids at 25°C are? |
| A. | mercury and lithium |
| B. | mercury and Caesium |
| C. | bromine and mercury |
| D. | mercury and argon |
| Answer» D. mercury and argon | |
| 252. |
Until the nineteenth Century, aluminium was almost as expensive as gold. The invention of an inexpensive way to extract this metal by a 22-year old American made this metal inexpensive subsequently. The inventor was? |
| A. | Goldschmidt |
| B. | Mond |
| C. | Charles-Martin Hall |
| D. | Parkes |
| Answer» D. Parkes | |
| 253. |
The term 'Carat' is used to express the purity of gold. The purest form of gold is? |
| A. | 18 carats |
| B. | 20 carats |
| C. | 22 carats |
| D. | 24 carats |
| Answer» E. | |
| 254. |
The substance that is least prone to catch and spread fire is? |
| A. | Nylon |
| B. | Terycot |
| C. | Cotton |
| D. | Polyester |
| Answer» D. Polyester | |
| 255. |
What is commonly called limestone is? |
| A. | CaO |
| B. | CaC2 |
| C. | CaSO4 |
| D. | CaCO3 |
| Answer» E. | |
| 256. |
Which of the following elements behave chemically,both as a metal and a non metal? |
| A. | argon |
| B. | carbon |
| C. | xenon |
| D. | boron |
| Answer» E. | |
| 257. |
Which among the following elements (metals) pollutes the air of a city having large number of automobiles? |
| A. | Cadmium |
| B. | Chromium |
| C. | Lead |
| D. | Nickel |
| Answer» D. Nickel | |
| 258. |
Which of the following is likely to reach our body via the food chain in the event of an atomic bomb explosion? |
| A. | U-235 |
| B. | Sr-90 |
| C. | K-40 |
| D. | H-3 |
| Answer» C. K-40 | |
| 259. |
Chemical name of bleaching powder is? |
| A. | Calcium Chlorate |
| B. | Calcium Chloro hypochlorite |
| C. | Calcium hypochlorite |
| D. | Calcium bi Chloride |
| Answer» D. Calcium bi Chloride | |
| 260. |
Denatured spirit is ethanol mixed with? |
| A. | Pyridine |
| B. | Kerosene |
| C. | Petrol |
| D. | Water |
| Answer» B. Kerosene | |
| 261. |
Percentage of lead in pencils is? |
| A. | 31-66 |
| B. | 0 |
| C. | 40 |
| D. | 80 |
| Answer» C. 40 | |
| 262. |
To chemical name of 'Commom salt' is? |
| A. | Sodium chloride |
| B. | Sodium nitrate |
| C. | Ammonium chloride |
| D. | Calcium chloride |
| Answer» B. Sodium nitrate | |
| 263. |
Coke is obtained by burning? |
| A. | Iron |
| B. | Benzol |
| C. | Naphthalene |
| D. | Coal |
| Answer» E. | |
| 264. |
An important ancillary product used in the petrochemicals industry is — |
| A. | Naphtha |
| B. | Petrol |
| C. | Kerosene |
| D. | Mobil |
| Answer» B. Petrol | |
| 265. |
The source of hydrogen for carbon assimilation ? |
| A. | FADH2 |
| B. | NADPH2 |
| C. | H2O |
| D. | RuBP |
| Answer» C. H2O | |
| 266. |
Concentrated, HNO3 can be stored in container made up of? |
| A. | Cu |
| B. | Al |
| C. | Sn |
| D. | Zn |
| Answer» C. Sn | |
| 267. |
The most reactive among the halogens is? |
| A. | Bromine |
| B. | Chlorine |
| C. | Iodine |
| D. | Fluorine |
| Answer» E. | |
| 268. |
A solution of zinc chloride cannot be stored in a vessel made of? |
| A. | Lead |
| B. | Aluminium |
| C. | Silver |
| D. | Gold |
| Answer» D. Gold | |
| 269. |
When water itself combines chemically with some element or mineral it is called? |
| A. | Carbonation |
| B. | Oxidation |
| C. | Desilication |
| D. | Hydration |
| Answer» E. | |
| 270. |
KMnO4 can be used as a/an? |
| A. | fertiliser |
| B. | insecticide |
| C. | disinfectant |
| D. | pesticide |
| Answer» D. pesticide | |
| 271. |
The major component in the LPG is? |
| A. | butane |
| B. | methane |
| C. | propane |
| D. | ethane |
| Answer» D. ethane | |
| 272. |
Acute lead poisoning is also known as? |
| A. | Byssinosis |
| B. | Neuralgia |
| C. | Itai-itai |
| D. | Plumbism |
| Answer» E. | |
| 273. |
Match List-I with List-II and select the correct answer using the code given below the Lists-I List-II(a) Lactic acid 1. Tamarind(b) Tartaric acid 2. Orange (c) Oxalic acid 3. Tomato(d)Citric acid 4. Citric acid Codes:(a)(b)(c)(d)(A) 2 3 1 4(B) 2 1 3 4(C) 4 3 1 2(D) 4 1 |
| A. | (D) |
| B. | (A) |
| C. | (B) |
| D. | (C) |
| Answer» D. (C) | |
| 274. |
Sodium thiosulphate (Na2S2O3) solution is used in photography to ..... |
| A. | remove undecomposed (AgBr) as a soluble silver thiosulphatecomplex. |
| B. | remove reduced silver |
| C. | reduce silver bromide (AgBr) grain to silver |
| D. | convert the metallic silver to silver salt |
| Answer» B. remove reduced silver | |
| 275. |
Which of the following statements about diamond are correct?1. It is used as a gem in jewellery because of its ability to reflect light.2. It is a good conductor of electricity3. It is used for cutting glass, marble stones and other hard materials4. It is used for drilling of rocksSelect the correct answer using the code given below: |
| A. | 1, 3 and 4 |
| B. | 2, 3 and 4 |
| C. | 1, 2 and 3 |
| D. | 2 and 4 only |
| Answer» B. 2, 3 and 4 | |
| 276. |
Which of the statements given below is/are correct?1. chloride of calcium2. bicarbonate of calcium3. sulphate of magnesium4. bicarbonate of magnesiumSelect the correct answer using the code given below: |
| A. | 1 and 3 only |
| B. | 1 only |
| C. | 2 and 4 |
| D. | 1, 2 and 3 |
| Answer» B. 1 only | |
| 277. |
Bronze is often used to make statues and medals whereas brass is used in making utensils, scientific apparatus and cartridges. Both brass and bronze are copper containing alloys, yet they differ in their chemical composition for additionally containing: |
| A. | Zinc in brass and tin in bronze |
| B. | Chromium in brass and nickel in bronze |
| C. | Nickel in brass and tin in bronze |
| D. | Iron in brass and nickel in bronze |
| Answer» B. Chromium in brass and nickel in bronze | |
| 278. |
Which one among the following methods is not effective in removing arsenic from contaminated ground water? |
| A. | Boiling |
| B. | Reverse osmosis |
| C. | Ton exchange |
| D. | Coagulation-adsorption |
| Answer» B. Reverse osmosis | |
| 279. |
When concentrated H2SO4 spills on the surface, it should be immediately cleaned.... |
| A. | with a piece of cloth |
| B. | by adding cold water |
| C. | by adding solid Na2Co3 |
| D. | by adding solid BaCl2 |
| Answer» D. by adding solid BaCl2 | |
| 280. |
Glass is actually.... |
| A. | a vitrifies liquid |
| B. | a crystalline solid |
| C. | an ionic solid |
| D. | an elastic solid |
| Answer» B. a crystalline solid | |
| 281. |
Rainwater collected after 30 to 40 minutes of raining is not suitable for drinking because it? |
| A. | contains dissolved toxic chemicals |
| B. | contains bacteria and dirt |
| C. | is deficient in minerals |
| D. | is acidic |
| Answer» E. | |
| 282. |
Solutions in test tubes containing H2O and aqueous NaOH can be differentiated with the help of? |
| A. | red litmus |
| B. | blue litmus |
| C. | Na2CO3 |
| D. | HCl (aqueous) |
| Answer» B. blue litmus | |
| 283. |
When items of jewellery made of metals such as copper or nickel are placed in a solution having a salt of gold, a thin film of gold is deposited by..... |
| A. | passing an electric current |
| B. | cooling to below 0 degree C |
| C. | heating above 100 degree C |
| D. | just keeping it for 10 minutes |
| Answer» B. cooling to below 0 degree C | |
| 284. |
A student heated some sulphur in a spatula and collected the gas 'X'. Which one among the following is correct about 'X'? |
| A. | X is SO2 and it turns moist litmus to blue |
| B. | X is SO3 and it turns moist litmus to red |
| C. | X is SO2 and it turns moist litmus to red |
| D. | X is SO3 and it turns dry litmus to blue |
| Answer» D. X is SO3 and it turns dry litmus to blue | |
| 285. |
Dead organs are generally stored in formalin. Formalin is? |
| A. | aqueous formaldehyde |
| B. | aqueous ferrous sulphate |
| C. | aqueous formic acid |
| D. | aqueous ferric alum |
| Answer» B. aqueous ferrous sulphate | |
| 286. |
Which one among the following is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage? |
| A. | Thioethanol |
| B. | Ethanol |
| C. | Methane |
| D. | Chloroform |
| Answer» B. Ethanol | |
| 287. |
Which one among the following substances evolves heat when dissolved in water? |
| A. | Calcium oxide |
| B. | Potassium nitrate |
| C. | Sodium chloride |
| D. | Glucose |
| Answer» B. Potassium nitrate | |
| 288. |
Heavy water implies? |
| A. | deuterated water |
| B. | water which is used in heavy industries such as thermalpower |
| C. | water which contains SO2-4 and CI- od calcium and magnesium |
| D. | water which has maximum density |
| Answer» B. water which is used in heavy industries such as thermalpower | |
| 289. |
Photochemical smog occurs in? |
| A. | warm, dry and sunny climate |
| B. | cool and humid climate |
| C. | cool, dry and sunny climate |
| D. | warm and humid climate |
| Answer» B. cool and humid climate | |
| 290. |
Contact lenses are made from? |
| A. | Teflon |
| B. | Polyvinyl chloride |
| C. | polystyrene |
| D. | Lucite |
| Answer» C. polystyrene | |
| 291. |
Which one among the following metals is used for making boats because it does no corrode by seawater? |
| A. | Nickel |
| B. | Tungsten |
| C. | Antimony |
| D. | Titanium |
| Answer» E. | |
| 292. |
Gypsum (CaSO4.2H2O) is added to clinker during cement manufacturing to....... |
| A. | decrease the rate of setting of cement |
| B. | bind the particles of calcium silicate |
| C. | facilitate the formation of colloidal gel |
| D. | impart strength to cement |
| Answer» B. bind the particles of calcium silicate | |
| 293. |
Which one among the following elements/ions is essential in small quantities for development of healthy teeth but causes mottling of the teeth if consumed in higher quantities? |
| A. | Fluoride |
| B. | Iron |
| C. | Chloride |
| D. | Potassium |
| Answer» B. Iron | |
| 294. |
Which of the following is an example of intellectual property? |
| A. | A business owner buys new computersforthe office. |
| B. | An inventor obtains a patentfor a new product. |
| C. | A restaurant kitchen isstocked with food |
| D. | Amanufacturing company buys a newmachine. |
| Answer» C. A restaurant kitchen isstocked with food | |
| 295. |
In an effective information management system, all information is..... |
| A. | abstract. |
| B. | accessible to everyone. |
| C. | quantitative in nature. |
| D. | accurate. |
| Answer» E. | |
| 296. |
Which one of the following is an air pollutant gas and is released by burning of fossil fuel? |
| A. | Nitrogen |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Sulphur dioxide |
| Answer» E. | |
| 297. |
Which marketing function helps businesses answer questions like, “Who are our customers?” and “Where are they located?” |
| A. | Marketing‐informationmanagement |
| B. | Product/servicemanagement |
| C. | Pricing |
| D. | Promotion |
| Answer» C. Pricing | |
| 298. |
Sheila decides to invest some of her money. She doesn'tlike to take big risks, and she wants to be able to access all of her money at all times. She also doesn' tmind not earning much interest. Sheilashould invest her money in a.... |
| A. | stock. |
| B. | savings account. |
| C. | certificate of deposit(CD). |
| D. | moneymarket account(MMA). |
| Answer» C. certificate of deposit(CD). | |
| 299. |
In a consensus‐building group,the facilitator is the person who.... |
| A. | takes notes. |
| B. | isin charge ofthe group. |
| C. | keeps the discussion on track. |
| D. | makessure everyone has equaltime to speak. |
| Answer» C. keeps the discussion on track. | |
| 300. |
Which of the following is a human resources staffing activity? |
| A. | Recruiting qualified workers |
| B. | Revising a training program |
| C. | Ensuring legal compliance |
| D. | Negotiating benefit packages |
| Answer» B. Revising a training program | |