Which one of the following minerals contain mostly silica?

The atomic theory of matter was first proposed by

Which one of the following is not true for diamond?

Which one of the following statements is not correct?

Which of the following is not a gaseous air pollutant?

Match List I with List II and select the correct answer using the codes below

A)John Dalton                         1)Law of definite proportion by volume

B)Joseph Proust                      2)Law of multiple proportion

C)Antoine Lavoisier                 3)Law of definite proportion by weight

D)Joseph Louis Gay Lussac      4)Law of conservation of mass

A    B    C     D