Chemistry Which one of the following is used for dating very old objects of archaeological importance? Tritium Carbon-14 Radium Phosphorus-31 Tritium Carbon-14 Radium Phosphorus-31 ANSWER DOWNLOAD EXAMIANS APP
Chemistry A solution is A solid dissolved i water A homogeneous mixture of two or more substances A mixture of two liquids A solid dissolved in a liquid A solid dissolved i water A homogeneous mixture of two or more substances A mixture of two liquids A solid dissolved in a liquid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who modified Bohr's theory by introducing elliptical orbits for electron path Sommerfeld Rutherford Hund Thomson Sommerfeld Rutherford Hund Thomson ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Ultraviolet Radio-waves Visible Infrared Ultraviolet Radio-waves Visible Infrared ANSWER DOWNLOAD EXAMIANS APP
Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From pink to blue-green From brown to blue-black From brown to orange-red From blue to pink From pink to blue-green From brown to blue-black From brown to orange-red From blue to pink ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one element from below list is liquid at room temperature Zinc Lead Bromine Argon Zinc Lead Bromine Argon ANSWER DOWNLOAD EXAMIANS APP
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