In a mixture of gases which do not react chemically together, the pressure of the individual gas is?

Biotechnology is applied in the? 

which of the following organic compounds has the lowest boiling point?

Consider the following reaction represented by the following equation:

C\(_2\)H\(_2\) \(^{H_2}_{→}\) X  \(^{H_2}_{→}\) Y.           X and Y respectively are?

Which of the following substances can be classified as heavy chemicals?