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Direction: A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives.
PASSAGE
Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over millions of years, these dead creatures form large deposits under sea-bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen, thus preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rocks become thicker, and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.
SOME IMPORTANT WORDS
(1) carcasses (N.) : the dead body of an animal
(2) silt (N.) : sand, mud, etc. that is carried by flowing water and is left at the mouth of river

  1. How does crude oil come out of the earth?
    1. As a thick brown or black liquid with mild smell
    2. As a thick red-brown liquid with strong smell
    3. As a mixture of different colours
    4. As a thick brown or black liquid with a strong smell
Correct Option: D

As a thick brown/black liquid with a strong smell.



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