Questões de Concurso Público UFRR 2015 para Vestibular - Primeiro Semestre - Seriado - E1

O momento de dipolo elétrico (µ) é uma propriedade relacionada à distribuição de cargas elétricas nas moléculas, o qual pode ser representado por: µ = Q x d, sendo Q a carga, em Coulomb, e d a distância entre as -8 cargas, em Å (10 cm). Quando o valor do momento de dipolo elétrico for igual a zero (µ = 0), a molécula é considerada apolar e, quando diferente de zero (µ ≠ 0), é polar.
Assinale a alternativa que apresenta apenas moléculas com momento de dipolo elétrico diferente de zero (µ ≠0)

Mount Roraima is a fascinating lost world
It's a real lost world. On this flat-topped mountain in Venezuela, cut off from civilisation, prehistoric castaways have evolved into unique species found nowhere else on the planet.
Welcome to the Mount Roraima, a spectacular sight which Lonely Planet has explored for the new book The World's Great Wonders.
Waterfalls spilling down sheer cliff faces into clouds. Labyrinths of stone pinnacles. Valleys carpeted with crystals. Carnivorous pitcher plants. Exquisite rare orchids.
When you gazed up at the fortress of stone from the base of the mountain, you didn't know what to expect from this plateau floating high above the Amazon jungle. Now that you're on the summit, it feels as if you've stepped into some archaic land. A world untouched by humankind. A forgotten world.
Pitching your tent for the night inside the caves, you hunker down, your dreams filled with images of gushing waterfalls, strange shifting landscapes and prehistoric creatures.
http://www.news.com.au/travel/world-travel/mount-roraima-is-a-fascinating-lostworld/story-e6frfqcr-1226928325804 Acesso em 01/09/2015.
The word CUT OFF highlighted in the text may be substituted by:

Roraima is an interesting mountain located in the Guiana Highlands. The peak actually shares the border with Venezuela, Brazil, and Guyana, but the mountain is almost always approached from the Venezuela side. The Brazil and Guyana sides are much more difficult. The mountain's highest point is Maverick Rock which is at and on the Venezuela side (though some other sources may differ on this). The Guiana Highlands is a very unusual mountain range covering parts of Venezuela, Brazil, Guyana, Suriname and French Guiana. The highlands are made of ancient sedimentary rock that is over two billion years old and are some of the oldest sedimentary rocks on the planet.
The mountain is known as a Tepui, which describes a flattopped mountain with vertical sides. Many waterfalls spill off Roraima, and the other Tepuis; nearly everyone has heard of Angel Falls, which spills off another nearby Tepui. There are many interesting plants that grow on the summit, including many carnivorous plants, i.e., ones that eat insects. There is little soil on top because the constant rains wash it away.
Monte Roraima was the first of the Tepuis to be climbed and the credit goes to English botanist Everard Im Thurn on an expedition sponsored by the Royal Geographical Society in 1884. It was his subsequent lectures in England, that are believed to have inspired Sir Arthur Conan Doyle's book 'The Lost World'.
Which word below, extracted from the text, is NOT a verb? 

Mount Roraima, a Mystified Hiking Experience

Hiking here is not hard and you can also get help from the indigenous population, as they organize tour guides in exchange for a small sum of money. If you are on your own however, try to reserve at least four days for this fantastic journey, as there are plenty of things to see and enjoy up there. Mount Roraima is said to have some of _____________________ hiking trails in the world.

You should not leave after 2 p.m. from the village as trekkers are no longer allowed after this hour. At the beginning of your climb, your baggages will be strictly checked and you can not take more than 15 kilos with you. So careful how you organize things. Being given that this is a national park , you are not permitted to take rocks or plants along the way.

The top of the mountain measures 2772m, it offers amazing landscapes and establishing a tent around here is possible. However, you should know the weather changes suddenly in this area so be prepared.

http://www.tourismontheedge.com/best-of/mount-roraima-a-mystified-hikingexperience.html Acesso em 01/09/2015.

Which alternative below contains an adjective in the superlative form that best complete the gap in the text?