Chemistry Highly toxic gas which causes headache, visual difficulty, paralysis and even death is CO CO2 All of these O3 CO CO2 All of these O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used for filling weather balloons is Nitrogen Air Hydrogen Helium Nitrogen Air Hydrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Elimination reaction Substitution reaction Addition reaction None of the options Elimination reaction Substitution reaction Addition reaction None of the options ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrical change None of these Electrochemical change Physical change Electrical change None of these Electrochemical change Physical change ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following type of coal has the lowest proportion of volatile matter ? Bituminous Anthracite Peat Lignite Bituminous Anthracite Peat Lignite ANSWER DOWNLOAD EXAMIANS APP
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