Chemistry Which of the following is used to increase the anti-knocking property of petrol ? Trimethyl lead Triethyl lead Tetraethyl lead Tetramethyl lead Trimethyl lead Triethyl lead Tetraethyl lead Tetramethyl lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer of atmosphere absorbs: Cosmic rays. All radiations of Light Ultraviolet rays Infra-red rays Cosmic rays. All radiations of Light Ultraviolet rays Infra-red rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry Interveinal necrotic spots on leaves appear due to NO2injury HF injury O3injury SO2injury NO2injury HF injury O3injury SO2injury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Coloured impurities Nitrogen dioxide Nitrous oxide Oxygen Coloured impurities Nitrogen dioxide Nitrous oxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iodine value is used to estimate Carboxylic groups in oil Alkali content in oil Unsaturation in oil Hydroxyl groups in oil Carboxylic groups in oil Alkali content in oil Unsaturation in oil Hydroxyl groups in oil ANSWER DOWNLOAD EXAMIANS APP
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