A. An amorphous carbon form from the incomplete combustion of animal or vegetable matter
B. Charcoal is an energy source for cooking
C. Charcoal is a purifying agent
D. Charcoal is a fossil fuel
Answer: A
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A. To separate two solid of different melting point
B. To separate to liquid of different vaporization point
C. To separate the two liquid of different boiling point
D. None of the above
Answer: C
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A. To add solvent to a solution
B. To purify a solid
C. To isolate a pure compound
D. To purify a liquid
Answer: D
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A. Warm the joint in a small flame, then tap gently
B. Tap the joint gently
C. Lubricate the joint with grease then tap gently
D. Rock the cone in the socket
Answer: C
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A. Dissolve in solvents to reduce size
B. Grind to reduce particle size
C. Heat to melt to reduce size
D. Estimate the weight in a container
Answer: B
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The Flemish Ministry of Education and Training awards scholarships to highly talented international students who want to study a master's programme at a Flemish university, a school of arts or ...
Universities of the Coimbra Group offer short-term visits (generally 1 to maximum 3 months) to young African researchers from higher education institutions from Sub-Saharan Africa. The main aim of ...
