Chemistry The element used for making solar cells is Silicon Magnesium Sodium Calcium Silicon Magnesium Sodium Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultraviolet radiation striking the earth is due to the depletion of Oxygen Carbon monoxide Carbon dioxide Ozone Oxygen Carbon monoxide Carbon dioxide Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following species has the highest bond order, shortest bond length and maximum bond strength O-2 O2 O+2 O-22 O-2 O2 O+2 O-22 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between 5 and 10 km 10 and 20 km 20 and 50 km 50 and 100 km 5 and 10 km 10 and 20 km 20 and 50 km 50 and 100 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The maximum number of covalent formed by nitrogen is 3 1 4 2 3 1 4 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrical change Electrochemical change Physical change None of these Electrical change Electrochemical change Physical change None of these ANSWER DOWNLOAD EXAMIANS APP
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