Chemistry Interveinal necrotic spots on leaves appear due to O3injury HF injury SO2injury NO2injury O3injury HF injury SO2injury NO2injury ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the most commonly used substance in fluorescent tubes? Sodium vapour and neon Mercury oxide and neon Mercury vapour and argon Sodium oxide and argon Sodium vapour and neon Mercury oxide and neon Mercury vapour and argon Sodium oxide and argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of fire extinguisher is used for petroleum fire ? None of these Soda acid type Powder type Foam type None of these Soda acid type Powder type Foam type ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which emits from rice field is Methane Ethane Nitrogen All of these Methane Ethane Nitrogen All of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of same element having different mass numbers are called________ Isomers Isobars Isotones Isotopes Isomers Isobars Isotones Isotopes ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by the pollution of environment by Nitrous oxide and Sulphur dioxide Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Carbon dioxide and Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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