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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.
| 196051. |
Consider the following :1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at thermal power plants ? |
| A. | 1 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1,2 and 3 |
| Answer» E. | |
| 196052. |
Consider the following :1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain ? |
| A. | 1 and 2 only |
| B. | 3 only |
| C. | 2 and 3 only |
| D. | 1,2 and 3 |
| Answer» D. 1,2 and 3 | |
| 196053. |
What is the difference between a CFL and an LED lamp ?1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material.2. The average life span of a CFL is mach longer than that of an LED lamp.3. A CFL is less energy -efficient as compared to an LED lamp.Which of the statements given above is/are correct ? |
| A. | 1 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1,2 and 3 |
| Answer» D. 1,2 and 3 | |
| 196054. |
India-based Neutrino Observatory is included by the Planning Commission as a mega science project under the 11th Five-year Plan. In this context,consider the following statements:1. Neutrinos are chargeless elementary particles that travel close to the speed of light. 2. Neutrinous are created in nuclear reactions of beta decay.3. Neutrinous have a negligible, but non zero mass.4. Trillions of Neutrinous pass through human body every second.Which of the statements given above are correct ? |
| A. | 1 and 3 only |
| B. | 1,2 and 3 only |
| C. | 2,3 and 4 |
| D. | 1,2,3 and 4 |
| Answer» E. | |
| 196055. |
A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop. The food chain is: Food crop-Rat -snake -Hawk. In this food chain, the highest concentration of the pesticide would accumulate in which one of the following? |
| A. | Food crop |
| B. | Rat |
| C. | Snake |
| D. | Hawk |
| Answer» E. | |
| 196056. |
If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven,the potato heats up but the paper plate does not. This is because: |
| A. | Potato is mainly made up of starch where as paper is mainly madeup of cellulose. |
| B. | Potato transmits microwaves where as paper reflects microwaves . |
| C. | Potato contains water where as paper does not contain water. |
| D. | Potato is a fresh organic material where as paper is a dead organic material. |
| Answer» D. Potato is a fresh organic material where as paper is a dead organic material. | |
| 196057. |
Chlorination is a process used for water-purification. The disinfecting action of chlorine is mainly due to |
| A. | The formation of hydrochloric acid when chlorine is added to water. |
| B. | The formation of hypochlorous acid when chlorine is added to water. |
| C. | The formation of nascent oxygenwhen chlorine is added to water. |
| D. | The formation of hydrogenwhen chlorine is added to water. |
| Answer» C. The formation of nascent oxygenwhen chlorine is added to water. | |
| 196058. |
Which one of the following is used as an explosive ? |
| A. | Phosphorus trichloride |
| B. | Mercuric oxide |
| C. | Graphite |
| D. | Nitroglycerine |
| Answer» E. | |
| 196059. |
Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively ? |
| A. | Lithium and mercury |
| B. | Lithium and osmium |
| C. | Aluminium andosmium |
| D. | Aluminium and mercury |
| Answer» C. Aluminium andosmium | |
| 196060. |
What are Rubies and Sapphires chemically known as ? |
| A. | Silicon dioxide |
| B. | Aluminium oxide |
| C. | Lead tetroxide |
| D. | Boron nitride |
| Answer» C. Lead tetroxide | |
| 196061. |
Which one of the following is also called stranger Gas ? |
| A. | Argon |
| B. | Neon |
| C. | Xenon |
| D. | Nitrous oxide |
| Answer» D. Nitrous oxide | |
| 196062. |
Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines ? |
| A. | Hydrogen and Oxygen |
| B. | Oxygen and acetylene |
| C. | Methane and air |
| D. | Carbon dioxide and methane |
| Answer» D. Carbon dioxide and methane | |
| 196063. |
Which of the following types is used by computed tomography employed for visualisation of the internal structure of human body ? |
| A. | X-ray |
| B. | South waves |
| C. | Magnetic resonance |
| D. | Radio isotopes |
| Answer» B. South waves | |
| 196064. |
Which one among the following is called philosopher's wool ? |
| A. | Zinc bromide |
| B. | Zinc nitrate |
| C. | Zinc oxide |
| D. | Zinc chloride |
| Answer» D. Zinc chloride | |
| 196065. |
Which one of the following non-metals is not a poor conductor of electricity ? |
| A. | Sulphur |
| B. | Selenium |
| C. | Bromine |
| D. | Phosphorus |
| Answer» C. Bromine | |
| 196066. |
Consider the following chemicals :1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene Which of the above is/are used as dry cleaning chemicals? |
| A. | 1 only |
| B. | 2 only |
| C. | 1,2 and 4 only |
| D. | 1,2,3 and 4 |
| Answer» D. 1,2,3 and 4 | |
| 196067. |
Which one of the following types of glass can cut off ultraviolet rays ? |
| A. | Soda glass |
| B. | Pyrex glass |
| C. | Jena glass |
| D. | Crookes glass |
| Answer» E. | |
| 196068. |
Which one of the following is another name of RDX ? |
| A. | Cyanohydrin |
| B. | Dextran |
| C. | Cyclohexane |
| D. | Cyclonite |
| Answer» E. | |
| 196069. |
Which are the materials generally employed as solder in soldering operation in electronics ? |
| A. | Iron and tin |
| B. | Lead and tin |
| C. | Aluminium and lead |
| D. | Aluminium and iron |
| Answer» C. Aluminium and lead | |
| 196070. |
Who has most recently been elected u0026 is presently the only Asian member in the World Association of Anti-Doping Scientists’ (WAADS) executive board? |
| A. | Alka Sirohi |
| B. | Alka Beotra |
| C. | Saurabh Raghuvanshi |
| D. | Mrinalini Mukherji |
| Answer» C. Saurabh Raghuvanshi | |
| 196071. |
Burraq and Barq are an all weather armed drone and a laser guided missile respectively. These were recently test fired by which country: |
| A. | Iraq |
| B. | Afghanistan |
| C. | Israel |
| D. | Pakistan |
| Answer» E. | |
| 196072. |
Consider the following statements 1. Anhydrous sodium carbonate is commonly known as baking soda.2. Baking soda is used in fire extinguishers.3. Bleaching powder is manufactured in Hasenclever plant.Which of the statements given above is/are correct ? |
| A. | 1,2 and 3 |
| B. | 2 and 3 |
| C. | 3 only |
| D. | 1 and 2 |
| Answer» C. 3 only | |
| 196073. |
Mohammed Nasheed, the first democratically elected president of which country has most recently been sentenced to 13 years' imprisonment: |
| A. | Maldives |
| B. | Afghanistan |
| C. | Seychelles |
| D. | Iran |
| Answer» B. Afghanistan | |
| 196074. |
Which one of the following is the correct sequence of the given substances in the decreasing order of their densities ? |
| A. | Steelu003e Mercury u003e Gold |
| B. | Goldu003eMercury u003e Steel |
| C. | Steel u003e Gold u003e Mercury |
| D. | Gold u003e Steel u003e Mercury |
| Answer» C. Steel u003e Gold u003e Mercury | |
| 196075. |
The North-South Rail link in Srilanka connects which two locations in the island nation: |
| A. | Galle to Negombo |
| B. | Galle to Bentota |
| C. | Talaimannar to Anuradhapura |
| D. | Talaimannar to Madhu Road |
| Answer» E. | |
| 196076. |
Consider the following statements :1. Baking soda is used in fire extinguishers.2. Quicklime is used in the manufacture of glass.3. Gypsum is used in the manufacture of Plaster of Paris.Which of the statements given above is/are correct ? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 only |
| D. | 1,2 and3 |
| Answer» E. | |
| 196077. |
Match List-I (Fuel Gases) with List-II (Major Constituents) and select the correct answer using the codes given below the lists: List-I List-IIA. CNG 1. Carbon monoxide, Hydrogen B. Coal gas 2. Butane, Propane C. LPG 3. Methane, Ethane D. Water gas 4. Hydrogen, Methane,Carbon monoxide |
| A. | A-(2),B-(1),C-(3),D-(4) |
| B. | A-(3),B-(4),C-(2),D-(1) |
| C. | A-(2),B-(4),C-(3),D-(1) |
| D. | A-(3),B-(1),C-(2),D-(4) |
| Answer» C. A-(2),B-(4),C-(3),D-(1) | |
| 196078. |
Standard 18-carat gold sold in the market contains |
| A. | 82 parts gold and 18 parts other metals |
| B. | 18 parts gold and 82 parts other metals |
| C. | 18 parts gold and 6 parts other metals |
| D. | 9 parts gold and 15 parts other metals |
| Answer» D. 9 parts gold and 15 parts other metals | |
| 196079. |
Regarding the atom of a chemical element,the magnetic quantum number refers to |
| A. | Orientation |
| B. | Shape |
| C. | Size |
| D. | Spin |
| Answer» B. Shape | |
| 196080. |
Consider the following statements:The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is 1. To keep the washing powder dry.2. To maintain the alkalinity of the powder.Which of these statements is/are correct ? |
| A. | only 1 |
| B. | only 2 |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» B. only 2 | |
| 196081. |
Consider the following statements with reference to the Periodic Table of chemical elements:1. Lonisation potential gradually decreases along a period.2. In a group of elements,electron affinity decreases as the atomic weight increases.3. In a given period, electronegativity decreases as the atomic number increases.Which of these statement(S) is/are correct ? |
| A. | 1 only |
| B. | 2 only |
| C. | 1 and 3 |
| D. | 2 and 3 |
| Answer» C. 1 and 3 | |
| 196082. |
With reference to ionic compounds, consider the following statements:1. Ionic compounds are insoluble in alcohol.2. Ionic compounds in the solid state are good conductors of electricity.Which of these statements is/are correct ? |
| A. | only 1 |
| B. | only 2 |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» B. only 2 | |
| 196083. |
In an atom, the order of filling up of the orbitals is governed by |
| A. | Aufbau principle |
| B. | Heisenberg's uncertainty principle |
| C. | Hund's rule |
| D. | Pauli,s exclusion principle |
| Answer» B. Heisenberg's uncertainty principle | |
| 196084. |
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes |
| A. | Dialysis |
| B. | Electrolysis |
| C. | Hydrolysis |
| D. | Photolysis |
| Answer» D. Photolysis | |
| 196085. |
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ? |
| A. | Methane, ethane, propane and butane |
| B. | Propane, butane, ethane and methane |
| C. | Butane,ethane, propane and methane |
| D. | Butane,propane,ethane and methane |
| Answer» B. Propane, butane, ethane and methane | |
| 196086. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II(Characteristic ) (Particle ) A. Zero mass 1. Positron B. Fractional charge 2. Neutrino C. Fractional spin 3. Quark D. Integral spin 4. Phonon |
| A. | A-(2),B-(3),C-(1),D-(4) |
| B. | A-(3),B-(2),C-(4),D-(1)` |
| C. | A-(2),B-(3),C-(4),D-(1) |
| D. | A-(3),B-(2),C-(1),D-(4) |
| Answer» B. A-(3),B-(2),C-(4),D-(1)` | |
| 196087. |
Which one of the following materials very hard and very ductile ? |
| A. | Carborundum |
| B. | Tungsten |
| C. | Cast iron |
| D. | Nichrome |
| Answer» E. | |
| 196088. |
Which one of the following is NOT radioactive ? |
| A. | Astatine |
| B. | Francium |
| C. | Tritium |
| D. | Zirconium |
| Answer» E. | |
| 196089. |
A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel |
| A. | Kills bacteria |
| B. | Kills germs and spores |
| C. | Absorbs moisture |
| D. | Absorbs all gases present inside the bottle |
| Answer» D. Absorbs all gases present inside the bottle | |
| 196090. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-IIA. German silver 1. Tin B. Solder 2. Nickel C. Bleaching Powder 3. Sodium D. Hypo 4. Chlorine |
| A. | A-(1),B-(2),C-(4),D-(3) |
| B. | A-(2),B-(1),C-(3),D-(4) |
| C. | A-(1),B-(2),C-(3),D-(4) |
| D. | A-(2),B-(1),C-(4),D-(3) |
| Answer» E. | |
| 196091. |
Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because |
| A. | Barium allows X-rays to pass through the stomach on account of its transparency to X-rays |
| B. | Barium compound,like magnesium sulphate helps in cleaning the stomach before X-ray examination |
| C. | Barium is a good absorber of X-ray and this helps the stomach to appear clearly in contrast with the other regions in the picture |
| D. | Barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture |
| Answer» D. Barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture | |
| 196092. |
Consider the following statements regarding a motor car battery:1. The voltage is usually 12 V. 2. Electrolyte used is hydrochloric acid.3. Electrodes are lead and copper.4. Capacity is expressed in ampere -hour.What of the above statements are correct ? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 3 and 4 |
| D. | 1 and 4 |
| Answer» E. | |
| 196093. |
Consider the following statements: Hard water is not suitable for 1. Drinking 2. Washing clothes with soap 3. Use in bollers 4. Irrigating crops Which of these statements are correct ? |
| A. | 1 and 3 |
| B. | 2 and 3 |
| C. | 1,2 and 4 |
| D. | 1,2,3 and 4 |
| Answer» C. 1,2 and 4 | |
| 196094. |
Aluminium surfaces are often 'anodized '. Thic means the deposition of a layer of |
| A. | Chromium oxide |
| B. | Aliminium oxide |
| C. | Nickel oxide |
| D. | Zinc oxide |
| Answer» E. | |
| 196095. |
Cobalt -60 is commonly used in radiation therapy because it emits |
| A. | Alpha rays |
| B. | Beta rays |
| C. | Gamma rays |
| D. | X-rays |
| Answer» D. X-rays | |
| 196096. |
Consider the following statements:Glass can be etched or scratched by 1. Diamond 2. Hydrofluoric acid 3. Aquaregia 4. Cone,sulphuric acid Which of these statements are correct ? |
| A. | 1 and 4 |
| B. | 2 and 3 |
| C. | 1 and 2 |
| D. | 2 and 4 |
| Answer» D. 2 and 4 | |
| 196097. |
Which one of the following metals does not form amalgams ? |
| A. | Zinc |
| B. | Copper |
| C. | Magnesium |
| D. | Iron |
| Answer» E. | |
| 196098. |
Match List-I (Naturally occurring substances ) with List-II (Elements )and select the correct answer using the codes given below the lists : List-I List-IIA. Diamond 1.Calcium B. Marble 2. Silicon C. Sand 3. Aluminium D. Ruby 4. Carbon |
| A. | A-(3),B-(1),C-(2),D-(4) |
| B. | A-(4),B-(2),C-(1),D-(3) |
| C. | A-(2),B-(1),C-(3),D-(4) |
| D. | A-(4),B-(1),C-(2),D-(3) |
| Answer» E. | |
| 196099. |
Match List-I with List-II and select the correct answer using the codes given below the lists : List -I List-IIA. Blue Vitriol 1. Sodium bicarbonate B. Epsom salt 2. Sodium hydroxide C. Baking soda 3. Magnesium sulphate D. Caustic soda 4. Copper sulphate |
| A. | A-(3),B-(4),C-(2),D-(1) |
| B. | A-(4),B-(3),C-(2),D-(1) |
| C. | A-(3),B-(4),C-(1),D-(2) |
| D. | A-(4),B-(3),C-(1),D-(3) |
| Answer» E. | |
| 196100. |
Consider the following statements about acetylene: 1. It is used in welding industry 2. It is a raw material for perparing plastics 3. It is easily obtained by mixing silicon carbide and water Of these statements : |
| A. | 1 and 2 are correct |
| B. | 1 and 3 are correct |
| C. | 2 and 3 are correct |
| D. | 1,2 and 3 are correct |
| Answer» B. 1 and 3 are correct | |