Question # 1

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

The vapour pressure of a liquid increase with the:

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increase pressure

increase of temperature

increase of intermolecular forces

increase of polarity of molecules

Which one is moderate reactive metal?

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Pb

Na

Ca

Mg

Which molecules is donor in nature?

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H₂

NH₃

O₂

HF

All ionic compound are ________________ at room temperature.

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Liquid

Solids

Gas

Plasma

Who discovered the proton?

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Goldstein

J.J Thomson

Neil Bohr

Ruther Ford

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

The formula of benzene is _________

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C6H6O3

C6H6

C12H22

Nil

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

Non-metals do not reaction with

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Strong bases

Concentrated acids

Dilute acids

Salts

It is an ionic compound

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H2O

NaCI

CH4

HF

The example of solid solute in gas solvent is

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butter

Sugar in water

Smoke in air

Opals

The absolute zero means:

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273.15 °C

-273.15 °C

0 °C

-373.15 °C

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