Questions

Norway is the top most country in the world's happiest country's list 2017 and India ranks 122nd in the list below than the Pakistan and Bangladesh. 

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

Any factor limiting the size of a population whose effect is not dependent on the number of individuals in the population, then such factor is called Density Independent Factor. It is things that the organisms have no control over.

Here in the given options, food shortage and disease are factors that are dependent on the number of population but Floods have no dependency.

Some examples of density independent factors are :: Earth quake, fires, volcanic eruptions, floods, and  all natural calamities.

In 1952, Waksman was awarded the Nobel Prize in Physiology or Medicine in recognition "for his discovery of streptomycin," the first antibiotic active against tuberculosis.

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 device which is used to measure air pressure is called as barometer. If the barometer reading is rising, it indicates that the air pressure is increasing and if the reading is falling the air pressure is decreaing.

Study of Life in outer space or search of life external to Earth is known as Exobiology.