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