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Chemistry

Chemistry
Lead pencil contains

Ferrous sulphide
Lead sulphide
Graphite
Lead

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Chemistry
Cement is made hard with

Polymerisation
Dehydration
Dissociation of water
Hydration and dissociation of water

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Chemistry
Malathion is a/an

Insecticide
Preservative
Fumigant
Pesticide

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Chemistry
Which of the following gases will effuse out of football bladder most quickly ?

N 2
H2
He
O2

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Chemistry
Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition

UV absorption spectroscopy
Rotational spectroscopy
UV photoelectron spectroscopy
Infrared absorption spectroscopy

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Chemistry
Which one of the following vegetable oils is used in the manufacture of paints?

Sunflower oil
Cottonseed oil
Linseed oil
Palm oil

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