Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 19 53 36 17 19 53 36 17 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The method of concentrating the ore which makes use of the difference in density between ore and impurities is called magnetic separation leaching levigation liquation magnetic separation leaching levigation liquation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Collection of dust Lack of aeration Oxidation of cellulose Frequent use Collection of dust Lack of aeration Oxidation of cellulose Frequent use ANSWER DOWNLOAD EXAMIANS APP
Chemistry Interveinal necrotic spots on leaves appear due to HF injury O3injury SO2injury NO2injury HF injury O3injury SO2injury NO2injury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Glycol is added to aviation gasoline because it Increases efficiency of petrol Prevents freezing of petrol Reduces consumption of petrol Reduces evaporation of petrol Increases efficiency of petrol Prevents freezing of petrol Reduces consumption of petrol Reduces evaporation of petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of hydrogen bonds between guanine and cytosine in DNA is 3 2 4 1 3 2 4 1 ANSWER DOWNLOAD EXAMIANS APP
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