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