UGC NET Paper1 Previous Year Solved Papers - 21th June 2019 Morning
42. Which of the following belongs to the category of geophysical hazards?
- Option : B
- Explanation : Geophysical hazards encompass geological and meteorological phenomena such as earthquakes, volcanic eruptions, wildfires, cyclonic storms, floods, droughts, avalanches and landslides. An avalanche is a geological phenomenon which occurs during winter. It is the movement of a large mass of ice or snow down a sloppy terrain.
43. Which of the following best describes a wiki?
- A
A system that allows users to add infonnation onto a website but does not change any pre-existing information.
- B
A system that allows collaborative modification of its content and structure directly from the web browser.
- C
A system that serves as a publically personal journal for an individual.
- D
A system that monitors the modification of content within a blog.
- Option : B
- Explanation : The term comes from the word "wikiwiki," which means "fast" in the Hawaiian language. A wiki is a knowledge base website on which users collaboratively modify content and structure directly from the web browser.
- Option : B
- Explanation : ICT Stands for "Information and Communication Technologies." ICT refers to technologies that provide access to information through telecommunications. It is similar to Information Technology (IT), but focuses primarily on communication technologies. This includes the Internet, wireless networks, cell phones, and other communication mediums.
- Option : C
- Explanation : The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight.
