Q. An Element Atomic number 17 and Mass number 36, then number of neutrons present in it
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Q. Which of the following gas does not form the part of atmosphere -
Q. Which of the following one of the following is used to restore the colour of old oil paintings
Q. Uranium eventually decays into a stable isotope of -
Q. Atomic clock transitions depends upon the –
Q. Quartz crystals normally used in quartz clocks etc. is chemically
Q. The enzyme “Diastase” is secreted in which among the following?
Q. The average kinetic energy of the molecules of an ideal gas is directly proportional to
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