Chemistry Silicon is used in All of these Transistors Semiconductors Solar energy devices All of these Transistors Semiconductors Solar energy devices ANSWER DOWNLOAD EXAMIANS APP
Chemistry Of the following, which one pollutes the air of a big city ? Cadmium Chromium Copper Lead Cadmium Chromium Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is used as fire extinguisher ? Carbon dioxide Carbon suboxide Sulphur dioxide Carbon monoxide Carbon dioxide Carbon suboxide Sulphur dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conversion of chemical energy into electrical energy occurs in Electric heaters Dynamo Atomic bombs A battery Electric heaters Dynamo Atomic bombs A battery ANSWER DOWNLOAD EXAMIANS APP
Chemistry Laughing gas is Nitrogen pentoxide Nitrous oxide Nitrogen trioxide Nitric oxide Nitrogen pentoxide Nitrous oxide Nitrogen trioxide Nitric oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal is extracted from sea water? Magnesium Aluminium Beryllium Potassium Magnesium Aluminium Beryllium Potassium ANSWER DOWNLOAD EXAMIANS APP
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