Explanation

WHO’s 1948 Constitution declared that “the enjoyment of the highest attainable standard of health is one of the fundamental rights of every human being,” 

World Bank Important question:

World Bank established: July 1944

World Bank was established during: the Bretton Woods Conference

World Bank Members: 189

World Bank's aim: to provide loans and grants for various projects

World Bank headquarters: Washington, USA

Explanation

Sandwich Islands was the name given to the Hawaiian Islands by James Cook in 1778.

Sandwich Island may also refer to Manuae (Cook Islands), named Sandwich Island by Cook.

Efate in the Republic of Vanuatu, named Sandwich Island by Cook

Explanation

Volgograd is the sixteenth-largest city by population size in Russia

The city was founded as the fortress of Tsaritsyn in 1589. 

City status since 1780

The city lies on the western bank of the Volga, covering an area of 859.4 square kilometers (331.8 square miles),

Explanation

In given ratio 3 : 4

3 is antecedent 

4 is consequent.

Explanation

Polynomials are sums of terms of the form k⋅xⁿ, where k is any number and n is a positive integer.

For example, 3x+2x-5 is a polynomial.

Explanation

40/20 = 2 

60/20 = 3

The 40:60 ratio simplified is 2:3 or 2/3 

Explanation

Solve 7n + 12 = 4n + 27

= 7n - 4n + 12 - 27

= 3n + 12 

= 3n - 15 

15 = 3n

15/ 3 = n 

n =  5 

Explanation

The angular momentum of an electron by Bohr is given by mvr or nh/2π

where v is the velocity,

n is the orbit in which the electron is revolving, m is the mass of the electron,

and r is the radius of the nth orbit

Explanation

A transformer operates on the principles of “electromagnetic induction”, in the form of Mutual Induction.

Mutual induction is the process by which a coil of wire magnetically induces a voltage into another coil located in close proximity to it.

Explanation

The study of the interaction between organisms and their surroundings is called ecology.

ecology that deals with the study of interactions between biotic and abiotic factors of the environment