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
| 51. |
Pearl is mainly made up of which among the following? |
| A. | Protein |
| B. | Calcium Carbonate |
| C. | Silica |
| D. | Sodium Carbonate |
| Answer» B. Calcium Carbonate | |
| 52. |
As we all know that, Gunpowder is a mixture of sulfur, charcoal, and potassium nitrate. Which among these components adds in speeding up the burning of the Gun Powder? |
| A. | Only Potassium Nitrate |
| B. | Only Charcoal |
| C. | Only Sulphur |
| D. | Both Sulphur and Potassium Nitrate |
| Answer» C. Only Sulphur | |
| 53. |
Normal‖ rainfall is slightly acidic (and a pH of 5.6 has been assigned which might be somewhere near 5 ) because of the presence of _______? |
| A. | Nitric Oxide |
| B. | Sulphuric Acid |
| C. | Nitric Acid |
| D. | Carbonic Acid |
| Answer» D. Carbonic Acid | |
| 54. |
Which among the following is not correctly matched? |
| A. | Brass: copper and zinc |
| B. | Duralumin : Copper and aluminum |
| C. | Constantan: Copper and Nickel |
| D. | White Gold- Gold and Silver |
| Answer» D. White Gold- Gold and Silver | |
| 55. |
Bring out the incorrect usage |
| A. | Heavy water – Moderator |
| B. | DDT – Insecticide |
| C. | Methyl Alcohol – Beverage |
| D. | Liquid Ammonia – Refrigerant |
| Answer» C. Methyl Alcohol – Beverage | |
| 56. |
What is Carbamide? |
| A. | A Pesticide |
| B. | A Fertilizer |
| C. | A Textile Dye |
| D. | An Explosive |
| Answer» B. A Fertilizer | |
| 57. |
Which among the following is the main constituent of vegetable oil and animal fats? |
| A. | Glycogen |
| B. | Triglyceride |
| C. | Galactose |
| D. | Diglyceride |
| Answer» B. Triglyceride | |
| 58. |
Which among the following can be used as a preservative in Tomato Juice? |
| A. | Sodium Chloride |
| B. | Sodium carbonate |
| C. | Sodium benzoate |
| D. | Sodium Lauril Sulphate |
| Answer» C. Sodium benzoate | |
| 59. |
Which among the following gas has lowest auto-ignition temperature? |
| A. | Methane |
| B. | Hydrogen |
| C. | Ethylene |
| D. | Carbon Di Sulphide |
| Answer» D. Carbon Di Sulphide | |
| 60. |
Which among the following is the most stable form of carbon under standard conditions? |
| A. | Charcoal |
| B. | Graphite |
| C. | Diamond |
| D. | Amorphous carbon |
| Answer» B. Graphite | |
| 61. |
Which among the following statement is correct? |
| A. | Both Melting point & Boiling Point of Heavy water are higher than normal water |
| B. | Both Melting point & Boiling Point of Heavy water are lower than normal water |
| C. | Melting point is higher and Boiling Point is lower than normal water |
| D. | Melting point is lower and Boiling Point is higher than normal water |
| Answer» A. Both Melting point & Boiling Point of Heavy water are higher than normal water | |
| 62. |
Which among the following gives hissing sound when dissolved into H2O? |
| A. | CaCO2 |
| B. | Ca(OH)2 |
| C. | CaO |
| D. | CaCl2 |
| Answer» C. CaO | |
| 63. |
What is the number of naturally occurring Halogens in the periodic table? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 64. |
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 | |
| 65. |
Which among the following is the main constituent of malleable metal alloy Pewter ? |
| A. | Copper |
| B. | Zinc |
| C. | Tin |
| D. | Bismuth |
| Answer» C. Tin | |
| 66. |
How many parts are of other metals in a 17 carat Gold? |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» C. 7 | |
| 67. |
Which among the following does not come under carbon Group of Periodic Table? |
| A. | silicon |
| B. | germanium |
| C. | tin |
| D. | selenium |
| Answer» D. selenium | |
| 68. |
Which among the following is not correctly matched? |
| A. | Sodium: Natrium |
| B. | Pottassium : Kalium |
| C. | Mercury :Hydrargyrum |
| D. | Arsenic : Stibium |
| Answer» D. Arsenic : Stibium | |
| 69. |
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 | |
| 70. |
Which among the following is an organic mineral? |
| A. | Amber |
| B. | Hornblende |
| C. | Angite |
| D. | Analcime |
| Answer» A. Amber | |
| 71. |
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 | |
| 72. |
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 | |
| 73. |
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 | |
| 74. |
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 | |
| 75. |
Which among the following is used as an antidote? |
| A. | Paracetamol |
| B. | Nicotine |
| C. | Thiamine |
| D. | Activated Charcoal |
| Answer» D. Activated Charcoal | |
| 76. |
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 | |
| 77. |
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 | |
| 78. |
Which among the following basic atoms are must in an Alkaloid? |
| A. | Sodium |
| B. | Nitrogen |
| C. | Magnesium |
| D. | Potassium |
| Answer» B. Nitrogen | |
| 79. |
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 | |
| 80. |
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 | |
| 81. |
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 | |
| 82. |
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 | |
| 83. |
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 | |
| 84. |
Which among the following gas is used in Balloons? |
| A. | Hydrogen |
| B. | Helium |
| C. | Nitrogen |
| D. | Oxygen |
| Answer» B. Helium | |
| 85. |
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 | |
| 86. |
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 | |
| 87. |
A Cyclotron is ___? |
| A. | A charged particle |
| B. | A particle Accelerator |
| C. | A magnetic particle |
| D. | A radioactive particle |
| Answer» B. A particle Accelerator | |
| 88. |
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 | |
| 89. |
Cassiterite is an ore of which of the following ? |
| A. | Iron |
| B. | Zinc |
| C. | Copper |
| D. | Tin |
| Answer» D. Tin | |
| 90. |
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 | |
| 91. |
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 | |
| 92. |
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 | |
| 93. |
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 | |
| 94. |
Hard Water contains which of the following? |
| A. | Aluminum |
| B. | Chlorine |
| C. | Calcium |
| D. | Zinc |
| Answer» C. Calcium | |
| 95. |
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 | |
| 96. |
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 | |
| 97. |
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 | |
| 98. |
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 | |
| 99. |
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% | |
| 100. |
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 | |
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