MCQOPTIONS
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MCQOPTIONS
This section includes 217 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which of the following is the chemical name of the lime stone? |
| A. | Calcium chloride |
| B. | Calcium oxide |
| C. | Calcium carbonate |
| D. | Calcium sulphate |
| Answer» D. Calcium sulphate | |
| 102. |
The chemical formula of the plaster of Paris is: |
| A. | CaS04.5H2O |
| B. | 2CaS04. H2O |
| C. | (CaS04)2. 2H2O |
| D. | CaSO4. MgO |
| Answer» C. (CaS04)2. 2H2O | |
| 103. |
Which of the following statement is true regarding the aluminium? |
| A. | Aluminium hydroxide is amphoteric in nature |
| B. | Aluminium exists in the Free State in nature |
| C. | Nitric acid does not react with the aluminium |
| D. | Hot and concentrated H2SO4 directly react with oxygen in which SO2 gas is released |
| Answer» C. Nitric acid does not react with the aluminium | |
| 104. |
For the installation of aluminium plants in India, the minimum required parameter other than bauxite is: |
| A. | Coke |
| B. | Electricity |
| C. | Labour |
| D. | Market |
| Answer» C. Labour | |
| 105. |
In the earth crust although the amount of aluminium is more than iron, however aluminium is costly than iron because: |
| A. | Aluminium is more useful than iron |
| B. | Aluminium forms more alloys than iron |
| C. | Aluminium made equipments are more acceptable then iron equipments |
| D. | The extraction processes of aluminium is more costly than extraction processes of iron |
| Answer» E. | |
| 106. |
The extremely soft mineral, talk (soap stone) is mainly: |
| A. | Manganese silicate |
| B. | Sodium silicate |
| C. | Sodium phosphate |
| D. | Magnesium silicate |
| Answer» E. | |
| 107. |
The chemical utilized and employed as fixer in the photography is: |
| A. | Sodium sulphate |
| B. | Sodium thiosulphate |
| C. | Ammonium per-sulphate |
| D. | Borax |
| Answer» C. Ammonium per-sulphate | |
| 108. |
In the ocean-water which of the following salt has its maximum contribution in the salinity: |
| A. | Calcium sulphate |
| B. | Magnesium chloride |
| C. | Magnesium iodide |
| D. | Sodium chloride |
| Answer» E. | |
| 109. |
The chemical formula of washing soda is : |
| A. | NaOH |
| B. | Ca (OH)2 |
| C. | NaOHC03 |
| D. | Na2C03.10H2O |
| Answer» E. | |
| 110. |
Monozite is the ore of: |
| A. | Zirconium |
| B. | Thorium |
| C. | Titanium |
| D. | Iron |
| Answer» C. Titanium | |
| 111. |
Galena is the ore of the metal: |
| A. | Silver |
| B. | Lead |
| C. | Mercury |
| D. | Aluminium |
| Answer» C. Mercury | |
| 112. |
Aluminium metal is extracted mainly from its ore: |
| A. | Magnetite |
| B. | Bauxite |
| C. | Dolomite |
| D. | Lime Pigment |
| Answer» C. Dolomite | |
| 113. |
The element radium was extracted from: |
| A. | Lime stone |
| B. | Pinch blend |
| C. | Retile |
| D. | Haematite |
| Answer» C. Retile | |
| 114. |
The main ore of the mercury is: |
| A. | Cinnabar |
| B. | Pyrite |
| C. | Bauxite |
| D. | Pyrolusite |
| Answer» B. Pyrite | |
| 115. |
The concentration process of sulphide ores is: |
| A. | Gravity separation process |
| B. | Magnetic separation process |
| C. | Forth floatation process |
| D. | Physical process |
| Answer» D. Physical process | |
| 116. |
The process employed to remove the magnetic impurities from the Ores is called: |
| A. | Gravity separation process |
| B. | Magnetic separation process |
| C. | Forth floatation process |
| D. | Physical process |
| Answer» C. Forth floatation process | |
| 117. |
Which of the following is the most fundamental property of the element? |
| A. | Atomic weight |
| B. | Molecular weight |
| C. | Atomic number |
| D. | Atomic density |
| Answer» D. Atomic density | |
| 118. |
Which of the following is the lightest element? |
| A. | Hydrogen |
| B. | Helium |
| C. | Mercury |
| D. | Platinum |
| Answer» B. Helium | |
| 119. |
Which of the following is the heaviest metal? |
| A. | Silver |
| B. | Gold |
| C. | Mercury |
| D. | Platinum |
| Answer» E. | |
| 120. |
The basis of the classification of the element in the modern periodic table is: |
| A. | Atomic number |
| B. | Atomic mass |
| C. | Atomic volume |
| D. | Atomic density |
| Answer» B. Atomic mass | |
| 121. |
Who propounded the modern periodic law? |
| A. | Newlands |
| B. | Dobrenor |
| C. | Mendeleev |
| D. | Moseley |
| Answer» E. | |
| 122. |
On what basis, the Mendeleev periodic table is classified? |
| A. | Atomic mass |
| B. | Atomic number |
| C. | Atomic volume |
| D. | Atomic density |
| Answer» B. Atomic number | |
| 123. |
The anti-knocking properties of any fuel exhibit: |
| A. | Golden number |
| B. | Natural number |
| C. | Octane number |
| D. | Mach number |
| Answer» D. Mach number | |
| 124. |
Which of the following is called as the brown coal? |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» C. Bituminous | |
| 125. |
The percentage amount of carbon in the various types of coal is different, in which of the following its percentage would be the most: |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» E. | |
| 126. |
Which of the following would produce minimum environmental pollution? |
| A. | Diesel |
| B. | Coal |
| C. | Hydrogen |
| D. | Kerosene |
| Answer» D. Kerosene | |
| 127. |
Which of the following has the maximum calorific value? |
| A. | Hydrogen |
| B. | Charcoal |
| C. | Natural gas |
| D. | Gasoline |
| Answer» B. Charcoal | |
| 128. |
In L.P.G. the main component is: |
| A. | Methane |
| B. | Carbon dioxide |
| C. | Butane |
| D. | Sulphur dioxide |
| Answer» D. Sulphur dioxide | |
| 129. |
The main component of the natural gas is: |
| A. | Methane |
| B. | Ethane |
| C. | Propane |
| D. | Butane |
| Answer» B. Ethane | |
| 130. |
The gaseous mixture of carbon monoxide and nitrogen is called: |
| A. | Coal gas |
| B. | Water gas |
| C. | Producer gas |
| D. | Natural gas |
| Answer» D. Natural gas | |
| 131. |
When the water vapour is poured on the red heated coke then the mixture of carbon monoxide and hydrogen gas is obtained which is: |
| A. | Coal gas |
| B. | Water gas |
| C. | Producer gas |
| D. | Bio gas |
| Answer» C. Producer gas | |
| 132. |
In the contest of an alternative sources of energy and practical bio-fuel ethanol can be obtained from-which of the following? |
| A. | Potato |
| B. | Paddy |
| C. | Sugarcane |
| D. | Wheat |
| Answer» D. Wheat | |
| 133. |
The employed catalyst in the production of ammonia through the Haber's process is: |
| A. | Nickel |
| B. | Iron |
| C. | Platinum |
| D. | Molybdenum |
| Answer» E. | |
| 134. |
The catalyst employed in the production of H2S04 by the Contact process is: |
| A. | The pieces (powder) of iron |
| B. | The pieces (powder) of platinum |
| C. | Oxide of nitrogen |
| D. | Nickel metal |
| Answer» C. Oxide of nitrogen | |
| 135. |
The catalyst used in the lead chamber process is: |
| A. | Oxide of the nitrogen |
| B. | Platinum |
| C. | Nickel |
| D. | MnO2 |
| Answer» B. Platinum | |
| 136. |
The catalyst employed in the hydrogenation process of the oils is: |
| A. | Fe |
| B. | Ni |
| C. | Mo |
| D. | Pt |
| Answer» C. Mo | |
| 137. |
Who is the inventor of the catalyst? |
| A. | Berzeleous |
| B. | Rutherford |
| C. | Louis |
| D. | Kosell |
| Answer» B. Rutherford | |
| 138. |
The catalyst is a substance through which the rates of chemical reactions are: |
| A. | Increased |
| B. | Decreased |
| C. | Changed |
| D. | None of these |
| Answer» D. None of these | |
| 139. |
The chemical reactions which occur in one direction (from left to right) are called: |
| A. | Reversible reaction |
| B. | Irreversible reactions |
| C. | Endothermic reactions |
| D. | Exothermic reactions |
| Answer» B. Irreversible reactions | |
| 140. |
In the endothermic reaction: |
| A. | Heat is absorbed |
| B. | Heat is evolved |
| C. | Heat doesn't change |
| D. | Temperature remains constant |
| Answer» B. Heat is evolved | |
| 141. |
Match the following: Set I a. A Fatty Acid b. Potassium Hydroxide c. Non-ionic Surfactants d. Neutralization Set II 1. Better Alkali 2. Process to make detergent 3. Process to make soap 4. Oil and fats Code: |
| A. | 3 4 2 1 |
| B. | 1 2 3 4 |
| C. | 4 1 2 3 |
| D. | 2 3 4 1 |
| Answer» D. 2 3 4 1 | |
| 142. |
Ozone layer of atmosphere absorbs:~! |
| A. | Ultraviolet rays |
| B. | Infra-red rays |
| C. | All radiations of Light |
| D. | Cosmic rays. |
| Answer» B. Infra-red rays | |
| 143. |
Ozone layer of atmosphere absorbs:~! |
| A. | Ultraviolet rays |
| B. | Infra-red rays |
| C. | All radiations of Light |
| D. | Cosmic rays. |
| Answer» B. Infra-red rays | |
| 144. |
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of%! |
| A. | atomic structure |
| B. | metallurgy |
| C. | periodic table of contents |
| D. | discovery of elements |
| Answer» D. discovery of elements | |
| 145. |
The formula C6H5-CO-CH3 represents%! |
| A. | Acetone |
| B. | Acetic acid |
| C. | Acetophenone |
| D. | Phenyl acetate |
| Answer» D. Phenyl acetate | |
| 146. |
*/*_The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of? |
| A. | atomic structure |
| B. | metallurgy |
| C. | periodic table of contents |
| D. | discovery of elements |
| Answer» D. discovery of elements | |
| 147. |
*/*_The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?? |
| A. | 3 billion years |
| B. | 100 years |
| C. | 0.01 minute |
| D. | 13 days |
| Answer» D. 13 days | |
| 148. |
*/*_The heat required to raise the temperature of body by 1 K is called? |
| A. | specific heat |
| B. | thermal capacity |
| C. | water equivalent |
| D. | None of the above |
| Answer» C. water equivalent | |
| 149. |
*/*_The most abundant rare gas in the atmosphere is? |
| A. | He |
| B. | Ne |
| C. | Ar |
| D. | Xe |
| Answer» D. Xe | |
| 150. |
*/*_The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in? |
| A. | 1.8 gram of H2O |
| B. | 12 moles of KMnO4 |
| C. | 0.6N H2SO4 |
| D. | 4.6 gram of C2H5OH |
| Answer» C. 0.6N H2SO4 | |