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