Exercise: Chemistry

Questions for: Chemistry

The material which can be deformed permanently by heat and pressure is called a
A:
thermoplastic
B:
thermoset
C:
chemical compound
D:
polymer
Answer: B
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The items amenable to detection by soft x-rays are
A:
contrabands
B:
lead in bullets
C:
narcotics
D:
genuine coins from counterfeit coins
Answer: D
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The mass of one Avogadro number of helium atom is
A:
1.00 gram
B:
4.00 gram
C:
8.00 gram
D:
4 x 6.02 x 1023 gram
Answer: B
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The number of waves in n x 10th Bohr's orbit are
A:
n2
B:
n
C:
n-2
D:
n3
Answer: B
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The oil used in the froth floatation process is
A:
coconut oil
B:
olive oil
C:
kerosene oil
D:
pine oil
Answer: D
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