Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 200 km 100 km 300 km 150 km 200 km 100 km 300 km 150 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is: Hydroxy phenyl alanine Amino phenyl alanine Dihydroxy phenyl alanine Phenyl alanine Hydroxy phenyl alanine Amino phenyl alanine Dihydroxy phenyl alanine Phenyl alanine ANSWER DOWNLOAD EXAMIANS APP
Chemistry When Hydrogen starts burning in air, it produces ? Carbonic Acid Water Methane Ammonia Carbonic Acid Water Methane Ammonia ANSWER DOWNLOAD EXAMIANS APP
Chemistry Of the following commonly used materials, the one that is not an alloy is Steel Copper Brass Bronze Steel Copper Brass Bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrochemical change Physical change Electrical change None of these Electrochemical change Physical change Electrical change None of these 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
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