Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 12 Zero 6 18 12 Zero 6 18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is not a pollutant ? Arsenic Mercury Lead Aluminium Arsenic Mercury Lead Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between 10 and 20 km 5 and 10 km 20 and 50 km 50 and 100 km 10 and 20 km 5 and 10 km 20 and 50 km 50 and 100 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is used in photography ? Silver bromide Aluminium hydroxide Potassium nitrate Sodium chloride Silver bromide Aluminium hydroxide Potassium nitrate Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry "Paramagnetism" is the property of Completely vacant electronic subshells Paired electrons Completely filled electronics subshells Unpaired electrons Completely vacant electronic subshells Paired electrons Completely filled electronics subshells Unpaired electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Colloids can be purified by Dialysis Condensation Condensation Condensation Dialysis Condensation Condensation Condensation ANSWER DOWNLOAD EXAMIANS APP