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CHEMISTRY

Chemistry
The most malleable metal is

platinum
gold
silver
iron

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Chemistry
The oil used in the froth floatation process is

pine oil
kerosene oil
olive oil
coconut oil

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Chemistry
The number of waves in n x 10th Bohr's orbit are

n-2
n3
n
n2

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Chemistry
The mass of one Avogadro number of helium atom is

8.00 gram
4.00 gram
1.00 gram
4 x 6.02 x 1023 gram

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Chemistry
The items amenable to detection by soft x-rays are

narcotics
lead in bullets
genuine coins from counterfeit coins
contrabands

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