Question : Which element of Group 17 has two isotopes of masses 35 and 37 amu with an average abundance of 75.77% and 24.23%, respectively?

Option 1: Chlorine

Option 2: lodine

Option 3: Fluorine

Option 4: Astatine

Question : Which artificial element has been provisionally named seaborgium by American researchers in honour of Nobel Laureate Glenn T. Seaborg?

Option 1: Element 97

Option 2: Element 106

Option 3: Element 90

Option 4: Element 103

Question : Which of the following is used to chemically test starch?

Option 1: Chlorine solution

Option 2: lodine solution

Option 3: Sulphur solution

Option 4: Bromine solution

Question : When did Linus Carl Pauling receive the Nobel Prize in Chemistry for his research into the nature of the chemical bond and its applications to the elucidation of the structure of complex substances'?

Option 1: 1954

Option 2: 1950

Option 3: 1956

Option 4: 1958

Question : In 1955, which synthetic element was provisionally named Mendelevium in honour of Dmitri Mendeleev, who created one of the first periodic tables?

Option 1: Element 90

Option 2: Element 101

Option 3: Element 103

Option 4: Element 106