Questions

The purpose of the Preamble is to clarify

1. who has made the Constitution,

2. what is the ultimate sanction behind it,

3. what are its goals and objectives,

4. what is its source (and)

5. what is the nature of the polity which is sought to be established by the Constitution.

Actually, the preamble is the opening statement to the United States Constitution.

The words in the Preamble ::

 'We the people of India, in our Constituent Assembly, do hereby adopt, enact and give to ourselves this Constitution'.

The purines are bases in the DNA. The two purines in DNA are Adenine and Guanine. These two purines forms hydrogen bonds with their complimentary pyrimidines such as Thymine and Cytosine to keep the two rails of the DNA molecule together.

Pascal's law is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.

This principle is stated mathematically as: P= P + rgh

If a micrograph is false-colored, it means that the computer has created the colour for the object since we know that the electron microscopes sees only black and white colours.

The purpose of hydrogenating unsaturated fats is to make them more solid at room temperature as it is easy store the product.

Gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism.

In short it is a piece or segment of chromosome.

Genes undergo mutation when their DNA sequence changes. 

Coagulation is a chemical process that involves neutralization of charge. Coagulation during water treatment is designed to remove particles suspended in water.

We know that, peninsula is a piece of land that surrounded by water on three sides.  Hence, it is what A piece of land almost surrounded by water i.e, three sides water and one side land.