Chemistry Which of the following is not a greenhouse gas ? Carbon dioxide Nitric oxide Chlorofluorocarbon Hydrogen Carbon dioxide Nitric oxide Chlorofluorocarbon Hydrogen 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 brown to orange-red From blue to pink From brown to blue-black From pink to blue-green From brown to orange-red From blue to pink From brown to blue-black From pink to blue-green ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance most commonly used as a food preservative is Sodium carbonate Tartaric acid Sodium salt of benzoic acid Acetic acid Sodium carbonate Tartaric acid Sodium salt of benzoic acid Acetic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Radium Tritium Carbon-14 Phosphorus-31 Radium Tritium Carbon-14 Phosphorus-31 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following alkali metals has highest specific heat? Lithium Potassium Caesium Rubidium Lithium Potassium Caesium Rubidium ANSWER DOWNLOAD EXAMIANS APP
Chemistry When cathode rays strike a target of high atomic weight, they give rise to ?-rays Positive rays X-rays ? and ? rays ?-rays Positive rays X-rays ? and ? rays ANSWER DOWNLOAD EXAMIANS APP
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