Chemistry mcq questions and answers for competitive exams
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Chemistry mcq questions and answers for competitive exams UPSC SSC , SSC CGL, SSC CHSL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
19.
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
22.
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
25.
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
26.
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
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