Which of the following is a correct IUPAC name?
A) 1,2-dichloro-4-bromobenzene
B) 1-bromo-3,4-dichlorobenzene
C) 4-bromo-1,2-dichlorobenzene
D) 3,4-dichloro-1-bromobenzene
C
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When we see a half-moon, the position of the Sun is
A. almost directly behind the Moon. B. at right angles to a line from Earth to the Moon. C. almost directly behind the Earth. D. about 45° from a line from Earth to the Moon.
Which of the following igneous rocks is NOT characteristic of mid-ocean ridges?
A. andesite and granodiorite B. gabbro that solidified in a magma chamber C. pillow basalt D. finely crystalline rocks that formed in dikes
Which region of East Asia is amongst the most densely populated in the world, with a population exceeding 100 million people?
A) Taiwan B) Tibet C) Manchuria D) the Korean Peninsula E) the Sichuan Basin
Which of the following was not one of the primary countries to establish colonies around the world?
A) Spain B) Portugal C) Britain D) France E) United States of America