Question # 1

Attaining two electrons in the valence shell is called.

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Octet rule

Duplet rule

Triplet rule

All of these

A reaction between an acid and a base produces

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Salt and an acid

Sald and base

Salt and water

Salt and gas

Metal have the tendency to lose elecrons due to.

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High ionization energies

Low ionization energies

Low electron affinity

None of the above

M shell has sub sheels.

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1s , 2s

1s,2s,3s

2s,2p

3s,3p,3d

Which liquid among the followingis a colloidal solution.

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Milk

Slaked lime used for white wash

Vinegar solution

Mixtur eof AgCl in water

--------------- of the energy used by traditional electric bulb is wasted in producing heat.

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60%

50%

70%

90%

Bond dissocialation for H2 is

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435 kJ/mol

440 kJ/mol

430 kJ/mol

445 kJ/mol

If reversibe reaction useful for preparing compounds on large scale.

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Yes

No

They are useful only when equilirbium lies far to the left side

They are useful only when equilibrium lies far to the right side

Noble gases are non -reactive, because they do not.

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Gain electrons

Lose electrons

Share electrons

All of these

Chlorine has two isotopes, both of which have

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Same mass Number

Same number of electrons

Same number of neurtons

Different number of protons

In chemical reaction, the substances that combine are called.

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Masses

Materials

Products

Reactants

According to Arrhenius concept acid is a substance which dissociates in aqueious solutin to give.

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Proton

Pair of Electron

Hydrogen Ions

Hydroxide ion

Which acid is used in he preparation of soaf.

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Oxalic Acid

Citric Acid

Stearic Acid

Tartaric Acid

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