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 pink to blue-green From brown to blue-black From blue to pink From brown to orange-red From pink to blue-green From brown to blue-black From blue to pink ANSWER DOWNLOAD EXAMIANS APP
Chemistry The wire of flash bulb is made of: Barium Copper Magnesium Silver Barium Copper Magnesium Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Peat Bitumen Anthracite Lignite Peat Bitumen Anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vulcanization of rubber is carried out by adding Ozone Sulphur Carbon Phosphorus Ozone Sulphur Carbon Phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? 13 days 100 years 0.01 minute 3 billion years 13 days 100 years 0.01 minute 3 billion years ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer used in making plastic crockery is Decron Nylon Melamine Bakelite Decron Nylon Melamine Bakelite ANSWER DOWNLOAD EXAMIANS APP
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