Chemistry The compound to which H2 does not add is Tetra –9 – phenanthrylethylene Tetraphenyl ethylene Biphenyl ethylene Tetra – a –naphthylethylene Tetra –9 – phenanthrylethylene Tetraphenyl ethylene Biphenyl ethylene Tetra – a –naphthylethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of neutrons present in an element having mass number 226 and atomic number 88 is : 138 88 50 314 138 88 50 314 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical substance present in bones and teeth is Calcium borate Calcium phosphate Calcium sulphate Calcium chloride Calcium borate Calcium phosphate Calcium sulphate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 200 km 150 km 300 km 100 km 200 km 150 km 300 km 100 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Tar roads get damaged if there is Heavy traffic Stagnation of water on road No sloping No maintenance Heavy traffic Stagnation of water on road No sloping No maintenance ANSWER DOWNLOAD EXAMIANS APP
Chemistry Carbon footprint can be reduced by Commuting by public transport Using energy efficient appliances All of these Recycling waste materials Commuting by public transport Using energy efficient appliances All of these Recycling waste materials ANSWER DOWNLOAD EXAMIANS APP
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