GS One‑Liners

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# Question & Answer
176
Which blood group is rarest in the world? - AB Negative
177
What is the largest vein in the human body? - Inferior Vena Cava
178
Which vitamin is also known as Folic Acid? - Vitamin B9
179
What is the site of lipid synthesis in a cell? - Smooth Endoplasmic Reticulum
180
Which organ is known as the graveyard of RBCs? - Spleen
181
Which gas is used in the preparation of Nitric Acid by Ostwald process? - Ammonia
182
What is the pH value of Seawater? - About 8.1
183
Which metal is used in the making of coins along with copper? - Nickel
184
What is the chemical formula of Oxalic Acid? - C₂H₂O₄
185
Which process is used for the extraction of Aluminium? - Hall-Heroult process
186
What is the most reactive metal? - Caesium or Francium
187
Which acid is present in Grapes? - Tartaric acid
188
What is the chemical name of Milk of Magnesia? - Magnesium Hydroxide
189
Which gas is known as Coal Gas? - Mixture of Hydrogen, Methane and Carbon monoxide
190
What is the chemical formula of Caustic Potash? - KOH
191
Which colour of light has the least deviation in a prism? - Red
192
What is the value of 1 kWh in Joules? - 3.6 × 10⁶ J
193
Which instrument is used to measure the density of liquids? - Hydrometer
194
What is the unit of Work done by electric current? - Joule
195
Who discovered the Nucleus of the atom? - Ernest Rutherford
196
What is the SI unit of Electric Charge? - Coulomb
197
Which mirror is used in solar cookers? - Concave mirror
198
What is the speed of sound in water? - Approximately 1480 m/s
199
Who invented the Electric Motor? - Michael Faraday
200
What is the SI unit of Power of a Lens? - Dioptre