Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Ozone Barium peroxide Sodium peroxide Hydrogen peroxide Ozone Barium peroxide Sodium peroxide Hydrogen peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following mineral does not contain oxygen ? Bauxite Haematite Cryolite Calcite Bauxite Haematite Cryolite Calcite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical used in embalming biological materials is Formaldehyde in methanol Formaldehyde in water Ethylene glycol Gaseous formaldehyde Formaldehyde in methanol Formaldehyde in water Ethylene glycol Gaseous formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Chemistry The pH of lemon juice is expected to be More than 7 Nothing can be predicted Equal to 7 Less than 7 More than 7 Nothing can be predicted Equal to 7 Less than 7 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in solar cells contains Thallium Silicon Caesium Tin Thallium Silicon Caesium Tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Biofertilizers convert nitrogen to ________ . Ammonia Nitrogenase Nitrates Amino acids Ammonia Nitrogenase Nitrates Amino acids ANSWER DOWNLOAD EXAMIANS APP
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