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