General Knowledge MCQ - English
The gases used in different types of welding would include
oxygen and hydrogen
oxygen, hydrogen, acetylene and nitrogen
oxygen, acetylene and argon
oxygen and acetylene
Answer : D
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alloys which contain mercury as one of the contents
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2) Which of the following is commonly called a 'polyamide'?
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atomic number and electronic configuration
number of neutrons and number of valence electrons
atomic number and number of valence electrons
number of neutrons and electronic configuration
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4) The average salinity of sea water is
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