Chemistry Which one of the following elements is an example of noble gas ? Chlorine Hydrogen Helium Nitrogen Chlorine Hydrogen Helium Nitrogen 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 Lead Mercury Platinum Zinc Lead Mercury Platinum ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Silver Zinc Aluminium Copper Silver Zinc Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is very reactive and kept in kerosene? Potassium Iodine Bromine Sodium Potassium Iodine Bromine Sodium ANSWER DOWNLOAD EXAMIANS APP
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