Correct Answer : Option (D) - 7

The pH of pure water (H20) is 7 at 25oC, but when exposed to the carbon dioxide in the atmosphere this equilibrium results in a pH of approximately 5.2.

Correct Answer : Option (C) - Neurons

In the form of electrical impulses, constantly travel back and forth between the brain and other parts of the body. A special cell called a neuron is responsible for carrying these messages. There are about 100 billion neurons in the human brain.

Correct Answer : Option (B) - Seismograph

Correct Answer : Option (C) - Jupiter

Correct Answer : Option (B) - Nitrogen

Correct Answer : Option (A) - Michael Faraday

The Father of Electricity, Michael Faraday was born on September 22, in 1791. The English scientist, who is responsible for the discovery of electromagnetic induction, electrolysis and diamagnetism, hailed from a poor family of a blacksmith.

Correct Answer : Option (D) - 1687

The three laws of motion were first compiled by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687.

Correct Answer : Option (C) - eye

The eye is a region of mostly calm weather at the center of tropical cyclones. ... It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather and highest winds occur.

Correct Answer : Option (D) - Suspended Particulate Matter

Suspended particulate matter (SPM) are finely divided solids or liquids that may be dispersed through the air from combustion processes, industrial activities or natural sources. Source Publication: Glossary of Environment Statistics, Studies in Methods, Series F, No.

Correct Answer : Option (B) - Kunlong

The AVIC AG600 Kunlong (Chinese: 鲲龙; pinyin: kÅ«nlóng; lit. 'Kun Dragon') is a large amphibious aircraft designed by AVIC and assembled by CAIGA. Powered by four WJ-6 turboprops, it is one of the largest flying boats with a 53.5 t (118,000 lb) MTOW.