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Chemistry

Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O2
O-22
O+2
O-2

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Chemistry
The metal that is used as a catalyst in the hydrogenation of oils is

Pb
Cu
Pt
Ni

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Chemistry
Silver halides are used in photographic plates because they are

Oxidised in air
Totally colourless
Soluble in hyposolution
Reduced by light

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Chemistry
Which of the following does the Nucleus of an atom consist of?

Protons and neutrons
Protons and electrons
Electrons
Protons

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Chemistry
The cathode of a lead storage battery is made up of

Lead
Zinc
Lead oxide
Manganese dioxide

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Chemistry
Highest percentage of carbon is found in which form of coal?

Lignite
Bituminous
Anthracite
Peat

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