Chemistry Which one of the following elements is an example of noble gas ? Nitrogen Chlorine Helium Hydrogen Nitrogen Chlorine Helium Hydrogen 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 Platinum Mercury Lead Zinc Platinum Mercury 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 Copper Zinc Silver Aluminium Copper Zinc Silver Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is very reactive and kept in kerosene? Sodium Bromine Iodine Potassium Sodium Bromine Iodine Potassium ANSWER DOWNLOAD EXAMIANS APP
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