Chemistry Poison used for killing rats is Calcium phosphide (Ca3P2) Magnesium phosphide (Mg3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Calcium phosphide (Ca3P2) Magnesium phosphide (Mg3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry An important green-house gas other than methane being produced from the agricultural fields is Nitrous oxide Sulphur dioxide Arsine Ammonia Nitrous oxide Sulphur dioxide Arsine Ammonia ANSWER DOWNLOAD EXAMIANS APP
Chemistry The oxidation number of nickel in K4[Ni(CN)4] is 4 8 –4 Zero 4 8 –4 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium sublimation of sodium to emit yellow colour ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Nitrogen Carbon dioxide Carbon monoxide Neon Nitrogen Carbon dioxide Carbon monoxide Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The sewage obtained from water closets and urinals is known as Garbage Sanitary waste Industrial waste Sullage Garbage Sanitary waste Industrial waste Sullage ANSWER DOWNLOAD EXAMIANS APP
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