Chemistry Which one of the following elements is an example of noble gas ? Helium Chlorine Nitrogen Hydrogen Helium Chlorine Nitrogen Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because It is lighter than air It is one of the constitutents of water Its atomic number is 2 It is a noble gas It is lighter than air It is one of the constitutents of water Its atomic number is 2 It is a noble gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry At room temperature, the metal that remains liquid is: Zinc Platinum Lead Mercury Zinc Platinum Lead Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Copper Silver Aluminium Zinc Copper Silver Aluminium Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is very reactive and kept in kerosene? Bromine Potassium Iodine Sodium Bromine Potassium Iodine Sodium ANSWER DOWNLOAD EXAMIANS APP
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