MCQOPTIONS
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MCQOPTIONS
This section includes 90 Mcqs, each offering curated multiple-choice questions to sharpen your Basic GK knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The litmus dye is purple in color, which is removed? |
| A. | Red |
| B. | Lichen |
| C. | Cabbage Turmeric |
| D. | Petunia flower |
| Answer» C. Cabbage Turmeric | |
| 52. |
Which of the following are strongly acidic? |
| A. | pH = 7 |
| B. | pH = 14 |
| C. | pH = 0 |
| D. | pH = 3 |
| Answer» D. pH = 3 | |
| 53. |
What is water soluble ashma called? |
| A. | Base |
| B. | Alkali |
| C. | Corrosion |
| D. | corrosion |
| Answer» C. Corrosion | |
| 54. |
An acid must contain mainly one atom which reacts with the metal to produce a gas. |
| A. | Hydrogen |
| B. | oxygen |
| C. | Nitrogen |
| D. | Ammonia |
| Answer» B. oxygen | |
| 55. |
What type of acid is found in curd? |
| A. | lactic acid |
| B. | citric acid |
| C. | Oxalic acid |
| D. | Others |
| Answer» B. citric acid | |
| 56. |
What is the pH value of sodium hydroxide? |
| A. | 11 |
| B. | 12 |
| C. | 13 |
| D. | 14 |
| Answer» E. | |
| 57. |
Herbs- The decomposition of vegetables into compost is an example of which reaction? |
| A. | endothermic |
| B. | exothermic |
| C. | substitution |
| D. | Amphibian |
| Answer» C. substitution | |
| 58. |
On heating copper powder in air, a layer of copper oxide accumulates on its surface. What is the color of this layer? |
| A. | Black |
| B. | White |
| C. | Yellow |
| D. | Brown |
| Answer» B. White | |
| 59. |
What type of chemical reaction is combustion of natural gas? |
| A. | combination reaction |
| B. | decomposition reaction |
| C. | exothermic reaction |
| D. | dissolution reaction |
| Answer» D. dissolution reaction | |
| 60. |
Thin wires can be pulled from a metal piece. For which property of the metal is it responsible? |
| A. | Tensile |
| B. | hardness |
| C. | Malignancy |
| D. | conductivity |
| Answer» B. hardness | |
| 61. |
Which metal starts floating when put in water? |
| A. | calcium |
| B. | Nickel |
| C. | Magnesium |
| D. | Potassium |
| Answer» B. Nickel | |
| 62. |
Which metal does not react with oxygen even at higher temperatures? |
| A. | Iron |
| B. | Gold |
| C. | Potassium |
| D. | Aluminum |
| Answer» C. Potassium | |
| 63. |
Which gas accumulates at the anode after electromagnetic decomposition of alumina? |
| A. | Hydrogen gas |
| B. | nitrogen gas |
| C. | Carbon dioxide gas |
| D. | oxygen gas |
| Answer» E. | |
| 64. |
Is zinc ore? |
| A. | zinc blade |
| B. | Bauxite |
| C. | sodium chloride |
| D. | Sinawar |
| Answer» B. Bauxite | |
| 65. |
Which one of the following fluids is non-metallic? |
| A. | Mercury |
| B. | Alcohol |
| C. | Water |
| D. | Bromine |
| Answer» E. | |
| 66. |
What is the substance of tooth gum which is very hard? |
| A. | Copper chloride |
| B. | calcium phosphate |
| C. | calcium carbide |
| D. | calcium carbonate |
| Answer» C. calcium carbide | |
| 67. |
Which acid is in tamarind? |
| A. | Methanoic acid |
| B. | Tartaric acid |
| C. | lactic acid |
| D. | Oxalic acid |
| Answer» C. lactic acid | |
| 68. |
What is an oxidation-reduction reaction called? |
| A. | endothermic reaction |
| B. | Redox reaction |
| C. | precipitation reaction |
| D. | exothermic reaction |
| Answer» C. precipitation reaction | |
| 69. |
Which gas is emitted by adding dilute sulfuric acid to granulated zinc? |
| A. | Hydrogen gas |
| B. | Sulfur Dioxide |
| C. | Oxygen gas |
| D. | No gas |
| Answer» B. Sulfur Dioxide | |
| 70. |
In the presence of sunlight, plants prepare their food (glucose) with CO2 and water. What is this reaction? |
| A. | Displacement |
| B. | Disintegration |
| C. | Photochemical |
| D. | precipitation |
| Answer» D. precipitation | |
| 71. |
Zinc and lead, than copper? |
| A. | is less active |
| B. | is more active |
| C. | is equally functional |
| D. | Others |
| Answer» C. is equally functional | |
| 72. |
A fermentation of grapes? |
| A. | chemical change is |
| B. | physical change |
| C. | Both chemical and physical changes |
| D. | Others |
| Answer» B. physical change | |
| 73. |
Which nature's flame is emitted when a ribbon of magnesium is combusted? |
| A. | red and bright |
| B. | Blue shiny |
| C. | White luminous |
| D. | bright green |
| Answer» D. bright green | |
| 74. |
Approximate pH value of lemon juice? |
| A. | 10 |
| B. | 2.2 |
| C. | 12 |
| D. | 14 |
| Answer» C. 12 | |
| 75. |
Which of the following is a heterogeneous compound? |
| A. | Plaster of Paris |
| B. | Chalk |
| C. | Marble |
| D. | Limestone |
| Answer» B. Chalk | |
| 76. |
With which substance is it beneficial to treat a bee sting? |
| A. | Baking Soda |
| B. | sodium carbonate |
| C. | sodium chloride |
| D. | Others |
| Answer» B. sodium carbonate | |
| 77. |
What kind of brushing should be done to clean the mouth so that dentistry can be stopped? |
| A. | acidic dentin |
| B. | basic dentistry |
| C. | neutral dentition |
| D. | all |
| Answer» C. neutral dentition | |
| 78. |
Which of the following is the conductor of nonmetal electricity? |
| A. | graphite |
| B. | Copper |
| C. | Sulfur |
| D. | diamond |
| Answer» B. Copper | |
| 79. |
Which of the following metals can be cut with a knife? |
| A. | Magnesium |
| B. | Sulfur |
| C. | Sodium |
| D. | Chromium |
| Answer» D. Chromium | |
| 80. |
Which of the following properties is not often present in organic compounds? |
| A. | soluble in water |
| B. | low melting point |
| C. | flammability |
| D. | all |
| Answer» B. low melting point | |
| 81. |
Gas is produced by the reaction of steam on iron? |
| A. | Hydrogen gas |
| B. | Oxygen gas |
| C. | ammonia gas |
| D. | Nitrogen gas |
| Answer» B. Oxygen gas | |
| 82. |
If an alloy contains a metal mercury, what is it called? |
| A. | mercury alloy |
| B. | Iron Alloy |
| C. | Amalgam |
| D. | Zinc Alloy |
| Answer» D. Zinc Alloy | |
| 83. |
It is easy to make stone by beating metals. Which property of the metal does it indicate? |
| A. | hardness |
| B. | malleability |
| C. | conductivity |
| D. | Activity |
| Answer» C. conductivity | |
| 84. |
is silica? |
| A. | metalloids |
| B. | metal |
| C. | non-metals |
| D. | none of these |
| Answer» B. metal | |
| 85. |
Which allotrope of carbon is more rigid? |
| A. | graphite |
| B. | Diamond |
| C. | Coal |
| D. | Kajal |
| Answer» C. Coal | |
| 86. |
Which compound is formed when copper is burnt in air? |
| A. | copper hydroxide |
| B. | copper hydride |
| C. | Copper Oxide |
| D. | nothing |
| Answer» D. nothing | |
| 87. |
Which of the following metals is available in wire form? |
| A. | Calcium |
| B. | Magnesium |
| C. | Copper |
| D. | Lead |
| Answer» D. Lead | |
| 88. |
Which non-metal is liquid at room temperature? |
| A. | mercury |
| B. | aluminum |
| C. | Bromine |
| D. | Copper |
| Answer» D. Copper | |
| 89. |
What is an alloy of copper and tin called? |
| A. | brass |
| B. | Duralumin |
| C. | Bronze |
| D. | Solder |
| Answer» D. Solder | |
| 90. |
Which of the following are metals found in free state in the earth's crust? |
| A. | Ag |
| B. | Mg |
| C. | Al |
| D. | Zn |
| Answer» B. Mg | |