MCQOPTIONS
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MCQOPTIONS
This section includes 621 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The charcoal used to decolorize brown sugar solution is |
| A. | Wood charcoal |
| B. | Coconut charcoal |
| C. | Animal charcoal |
| D. | Sugar charcoal |
| Answer» D. Sugar charcoal | |
| 102. |
Which of the following substance is highly plastic? |
| A. | Quartz |
| B. | Mica |
| C. | Granite |
| D. | Clay |
| Answer» E. | |
| 103. |
The residue left after extracting juice from sugar beet and sugarcane is called |
| A. | molasses |
| B. | bagasse |
| C. | whey |
| D. | biomass |
| Answer» C. whey | |
| 104. |
Indane gas is a mixture of which gases? |
| A. | butane and hydrogen |
| B. | butane and propane |
| C. | butane and oxygen |
| D. | methane and oxygen |
| Answer» C. butane and oxygen | |
| 105. |
An acid having basicity one is - |
| A. | Sodium dihydrogen phosphate |
| B. | Disodium hydrogen phosphate |
| C. | Sodium phosphate |
| D. | Phosphoric acid |
| Answer» C. Sodium phosphate | |
| 106. |
Thermal electricity is generated by using which of these? |
| A. | Coal only |
| B. | Coal and Natural Gas only |
| C. | Coal, Natural Gas and Petroleum |
| D. | None of these |
| Answer» D. None of these | |
| 107. |
Chemical name of vinegar is - |
| A. | Acetone |
| B. | Acetic acid |
| C. | Formaldehyde |
| D. | Ethanol |
| Answer» C. Formaldehyde | |
| 108. |
Vinegar is used as a condiment, and in the pickling of vegetables and other foods. What is the constituent of vinegar? |
| A. | Butanoic acid |
| B. | Methanoic acid |
| C. | Ethanoic acid |
| D. | Hexanoic acid |
| Answer» D. Hexanoic acid | |
| 109. |
The aqueous solution of which acids is called Vinegar - |
| A. | Citric acid |
| B. | Hydrochloric acid |
| C. | Acetic acid |
| D. | Oxalic acid |
| Answer» D. Oxalic acid | |
| 110. |
Which one of the following is found in Vinegar? |
| A. | Acetic acid |
| B. | Propionic acid |
| C. | Formic acid |
| D. | Butyric acid |
| Answer» B. Propionic acid | |
| 111. |
is used for making vinegar. |
| A. | Tartaric acid |
| B. | Mahe acid |
| C. | Oxalic acid |
| D. | Acetic acid |
| Answer» E. | |
| 112. |
Vinegar is . |
| A. | diluted acetic acid |
| B. | glacial acetic acid |
| C. | glacial formic acid |
| D. | diluted formic acid |
| Answer» B. glacial acetic acid | |
| 113. |
In arc welding, Argon is used because of its - |
| A. | Low reactivity with metal |
| B. | Ability to lower the melting point of the metal |
| C. | High flammability |
| D. | High calorific value |
| Answer» B. Ability to lower the melting point of the metal | |
| 114. |
The radioactive element used in heart pacemakers is |
| A. | Uranium |
| B. | Deuterium |
| C. | Plutonium |
| D. | Radium |
| Answer» B. Deuterium | |
| 115. |
Which amidst the following is not a gem stone? |
| A. | Cat's-eye |
| B. | Topaz |
| C. | Opal |
| D. | Pearl |
| Answer» B. Topaz | |
| 116. |
Which of the following vegetable oils does not contain essential fatty acids? |
| A. | Sunflower oil |
| B. | Mustard oil |
| C. | Coconut oil |
| D. | Gmundnut oil |
| Answer» B. Mustard oil | |
| 117. |
Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes? |
| A. | Borax |
| B. | Saltpetre |
| C. | Hydrogen peroxide |
| D. | Sodium chloride |
| Answer» E. | |
| 118. |
Which one of the following is used to restore the colour of old oil-paintings? |
| A. | Ozone |
| B. | Hydrogen peroxide |
| C. | Barium peroxide |
| D. | Sodium peroxide |
| Answer» C. Barium peroxide | |
| 119. |
What happens to its potential energy when an object is taken to high altitude? |
| A. | Its potential energy increases |
| B. | Its potential energy decreases |
| C. | Its potential energy remain same |
| D. | None of the above |
| Answer» B. Its potential energy decreases | |
| 120. |
Mortar is a mixture of water sand and |
| A. | Slaked lime |
| B. | Quick lime |
| C. | Limestone |
| D. | Gypsum |
| Answer» B. Quick lime | |
| 121. |
Which of the following is responsible for the extra strength of pyrex glass? |
| A. | Potassium Carbonate |
| B. | Lead Oxide |
| C. | Borax |
| D. | Ferric Oxide |
| Answer» D. Ferric Oxide | |
| 122. |
Chemically 'Quick Silver is known as |
| A. | Mercury |
| B. | Silver |
| C. | Gold |
| D. | Copper |
| Answer» B. Silver | |
| 123. |
Silver halides are used in photographic plates because they are - |
| A. | oxidised in air |
| B. | soluble in hyposolution |
| C. | reduced by light |
| D. | totally colourless |
| Answer» D. totally colourless | |
| 124. |
Which one of the following metals does not form amalgam? |
| A. | Zinc |
| B. | Copper |
| C. | Magnesium |
| D. | Iron |
| Answer» E. | |
| 125. |
Which one of the following is a mixture of carbon monoxide and hydrogen? |
| A. | coal gas |
| B. | producer gas |
| C. | water gas |
| D. | gobar gas |
| Answer» D. gobar gas | |
| 126. |
Nitric acid does not react with - |
| A. | Gold |
| B. | Copper |
| C. | Zinc |
| D. | Iron |
| Answer» B. Copper | |
| 127. |
Which one of the following metals occurs in nature in free state? |
| A. | Gold |
| B. | Sodium |
| C. | Aluminium |
| D. | Copper |
| Answer» B. Sodium | |
| 128. |
gives hardness to stainless steel. |
| A. | Zinc |
| B. | Lead |
| C. | Carbon |
| D. | Tin |
| Answer» D. Tin | |
| 129. |
Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps? |
| A. | Sodium |
| B. | Neon |
| C. | Hydrogen |
| D. | Nitrogen |
| Answer» B. Neon | |
| 130. |
Preparation of `Dalda or Vanaspati' ghee from vegetable oil utilizes the following process : |
| A. | Hydrolysis |
| B. | Qxidation |
| C. | Hydrogenation |
| D. | Ozonolysis |
| Answer» D. Ozonolysis | |
| 131. |
Which gas is used to manufacture vanaspati from vegetable oil is - |
| A. | carbon dioxide |
| B. | nitrogen |
| C. | oxygen |
| D. | hydrogen |
| Answer» E. | |
| 132. |
Which among the following is used to dilute oxygen in the gas cylinders used by divers? |
| A. | Krypton |
| B. | Argon |
| C. | Helium |
| D. | Neon |
| Answer» D. Neon | |
| 133. |
For determination of the age of which among the following is carbon dating method used? |
| A. | Fossils |
| B. | Rocks |
| C. | Trees |
| D. | 1 & 2 above |
| Answer» E. | |
| 134. |
The gas that causes suffocation and death when coal or coke is burnt in a closed room is - |
| A. | Methane |
| B. | Ethane |
| C. | Carbon monoxide |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 135. |
The Bhopal gas tragedy was caused by the gas - |
| A. | Methyl chloride |
| B. | Methyl Iso Cyanide |
| C. | Methyl Iso Cyanate |
| D. | Methyl Cyanide |
| Answer» D. Methyl Cyanide | |
| 136. |
Cokking gas is a mixture of - |
| A. | methane and ethylene |
| B. | carbon dioxide and oxygen |
| C. | butane and propane |
| D. | carbon monoxide and carbon dioxide |
| Answer» D. carbon monoxide and carbon dioxide | |
| 137. |
Which of the following auto mobile gases is not considered to be an air pollutant? |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Sulfur dioxide |
| D. | Nitrogen dioxide |
| Answer» B. Carbon monoxide | |
| 138. |
Which adioactive pollutant has recently drawn the attention of the public due to its occurrence in the building materials? |
| A. | Radium |
| B. | Radon |
| C. | Thorium |
| D. | Rlutonium |
| Answer» D. Rlutonium | |
| 139. |
The Bhopal tragedy was caused by the gas - |
| A. | phosgene |
| B. | carbon monoxide |
| C. | methyl isocyanate |
| D. | chlorine |
| Answer» D. chlorine | |
| 140. |
"Bhopal gas tragedy" 1984 is related to |
| A. | Aluminium Phosphide |
| B. | Methyl bromide |
| C. | Methyl isocyanate |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 141. |
Bhopal has tragedy is associated with leakage of |
| A. | carbon dioxide |
| B. | nitrogen dioxide |
| C. | sulphur dioxide |
| D. | methyl isocyanate |
| Answer» E. | |
| 142. |
The gas involved in Bhopal incident was - |
| A. | Hydrogen sulphide |
| B. | Nitrogen dioxide |
| C. | Methyl chloride |
| D. | Methyl isocyanide |
| Answer» E. | |
| 143. |
Glycol is used to manufacture which of the following? |
| A. | Nylon |
| B. | Artificial silk |
| C. | Terylene |
| D. | Rubber |
| Answer» D. Rubber | |
| 144. |
The bubbles in Chanmpagne and Soda are - |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | Hydrogen |
| Answer» E. | |
| 145. |
Which one of the following elements is used in the manufacture of fertilizers? |
| A. | Fluorine |
| B. | Potassium |
| C. | Lead |
| D. | Aluminium |
| Answer» C. Lead | |
| 146. |
The gas that is used in the manufacture of vanaspati ghee is - |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Hydrogen |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 147. |
Lead pencil contains - |
| A. | Lead nitrate |
| B. | Graphite |
| C. | Lead peroxide |
| D. | Lead Sulphate |
| Answer» C. Lead peroxide | |
| 148. |
Kidney stones are mainly formed by which of the following compound - |
| A. | Sodium chloride |
| B. | Silicates |
| C. | Calcium bicarbonate |
| D. | Calcium oxalate |
| Answer» E. | |
| 149. |
Mark the compound which possesses ionic, covalent and coordinate bonds. |
| A. | NH4C1 |
| B. | SO3 |
| C. | SO2 |
| D. | H2O |
| Answer» B. SO3 | |
| 150. |
Which one of the following can be oxidized to the corresponding carbonyl compound - |
| A. | O-Nitrophenol |
| B. | Phenol |
| C. | 2-methyl-2-hydroxy propane |
| D. | 2-hydroxy propane |
| Answer» E. | |