Question : Which odourless, colourless, tasteless and chemically unreactive gas was invented by Daniel Rutherford in 1772 and was independently isolated at the same time by Carl Wilhelm Scheele and Henry Cavendish?
Option 1: Nitrogen
Option 2: Argon
Option 3: Fluorine
Option 4: Oxygen
Correct Answer: Nitrogen
Solution : The correct answer is nitrogen.
The Scottish physician Daniel Rutherford discovered nitrogen. By isolating the particle in 1772, Rutherford found nitrogen. The element nitrogen has an atomic number of seven and the letter N as its symbol.
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Question : Which of the following is odourless, tasteless, and non-toxic and is made up of 93.05% methane, nitrogen, carbon dioxide, propane, and traces of ethane?
Option 1: LPG
Option 2: Chlorine
Option 3: CNG
Option 4: Gobar gas
Question : Ozone consists of which of the following?
Option 1: Oxygen only
Option 2: Oxygen and Nitrogen
Option 3: Hydrogen and Carbon
Option 4: Oxygen and Carbon
Question : Which element behaves chemically both as metal and non-metal?
Option 1: Argon
Option 2: Boron
Option 3: Xenon
Option 4: Carbon
Question : Which of the following is colourless?
Option 1: Chlorine
Option 2: Oxygen
Option 3: Phosphorus
Option 4: Sulphur
Question : The discovery and understanding of electromagnetic induction is based on a long series of experiments carried out by ______.
Option 1: Planck and Fermi
Option 2: Einstein
Option 3: Faraday and Henry
Option 4: Rutherford
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