GS One‑Liners

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# Question & Answer
126
Which blood group has neither A nor B antibodies? - AB
127
What is the strongest muscle in the human body? - Masseter (jaw muscle)
128
Which vitamin is also known as Biotin? - Vitamin B7
129
What is the site of packaging of proteins in a cell? - Golgi apparatus
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Which organ is known as the thermostat of the body? - Hypothalamus
131
Which gas is responsible for photochemical smog? - Nitrogen oxides and Hydrocarbons
132
What is the pH value of Human tears? - About 7.4
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Which metal is used in the making of galvanised iron? - Zinc
134
What is the chemical formula of Toluene? - C₇H₈
135
Which process is used for the purification of copper? - Electrolytic refining
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What is the second most abundant element in the Earth’s crust? - Silicon
137
Which acid is present in Tamarind? - Tartaric acid
138
What is the chemical name of Formalin? - Formaldehyde solution
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Which gas is known as Marsh Gas? - Methane
140
What is the chemical formula of Sodium Carbonate? - Na₂CO₃
141
Which ray is used in night vision devices? - Infrared rays
142
What is the value of 1 torr in Pascal? - 133.3 Pa
143
Which instrument is used to measure the diameter of a wire? - Screw gauge or Vernier calipers
144
What is the unit of Electric Conductance? - Siemens
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Who discovered the Law of Electromagnetic Induction? - Michael Faraday
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What is the SI unit of Magnetic Moment? - Ampere metre squared
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Which lens is used to correct Presbyopia? - Bifocal lens
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What is the refractive index of Benzene? - Approximately 1.50
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Who invented the Spectroscope? - Joseph von Fraunhofer
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What is the SI unit of Heat Capacity? - Joule per Kelvin