Chemistry Section 1 - General Knowledge Questions and Answers

51.

The metal does not give H₂ on treatment with dilute HCL is

52.

The number of g-molecule of oxygen in 6.02 x 10²⁴CO molecules is

53.

The most extensive, commercially useful source of thorium as monazite sand occurs in India at

54.

The main active constituent of tea and coffee is

55.

The maximum number of isomers for an alkene with molecular formula C₄H₈ is