Chemistry The element used for making solar cells is Sodium Calcium Silicon Magnesium Sodium Calcium Silicon Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 17 53 36 19 17 53 36 19 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Water vapour Ozone Carbon monoxide Carbon dioxide Water vapour Ozone Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stalactites and Stalagmites form due to the precipitation of : CaCl2 CaCO3 MgCl2 MgCO3 CaCl2 CaCO3 MgCl2 MgCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a characteristic feature of alloys? They are Solutions Homogeneous systems Mixtures Compounds Solutions Homogeneous systems Mixtures Compounds ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which amidst the following is not a gem stone ? Opal Topaz Pearl Cat's-eye Opal Topaz Pearl Cat's-eye ANSWER DOWNLOAD EXAMIANS APP
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