Question # 1

In metals, the hold of nucieus over the valence shell elecrons is veak due to.

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Highlectron affinity

Large sized atoms

High ionization energies

All of the above

In chemical reaction, the substances that combine are called.

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Masses

Materials

Products

Reactants

The haviest metal is

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Iron

Lead

Osmium

Platinum

Emperical Formula of Glucose is

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CH2O

CHO

CHO2

C2HO

Which one of the example of colloid.

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Paints

Milk of magnesia

Jelly

None of these

Without stoichiometry which industry cannot exist.

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It helps detemine whether the matter is radioactie or not

It helps determine the age of organic matter

It helps determine the composition of matter

It helps deterime the usefulness of matter

Whcih of the following atoms willnot form cation or anion.

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Atomic no. 16

Atomic no. 18

Atomic no. 17

Atomic No. 19

Which area of chemistry imoroves to gauge the behavior of pollutants and develp techniques for polution control?

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analytical chemistry

geochemistry

Organic chemistry

Environmental Chemsitry

How many atoic mass units (amu) are there in one gram.

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1 amu

6.022 x 10²³

10 amu

6.022 x 10²²

Building block of all matter is.

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element

Compound

Mixture

Atom

No reaction occurs if the energy of reacting particles.......activation energy.

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Lower than

Greather than

Nearest to

Equal to

Quantum means.

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Virable energy

Fixed energy

High energy

Minimum energy

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