Question # 1

Which is a Lewis base?

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H⁺

NH₄

BF₃

AlCl₃

Lavoisier named binary compounds of oxygen acids in .

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1787

1790

1815

1828

pH of neutral solution is always.

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6

5

7

10

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

The product of Lewis acid-base reaction is called adduct. The bond between the adduct species is.

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Ionic

Covalent

Metallic

Co-ordinate covalent

Water of crystallization is responsible for.

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Melting points of crystals2

Boiling point of crystal

Shape of crystal

Transition points of crystals

The word acid is derived from the.

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Greek word

Latin word

English word

Arabic word.

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

Which one is used for alkaline batteries?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

Acidic solutions have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

Which base is more corrosive?

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NH₄OH

NaOH

Ca(OH)₂

AL(OH)₂

Which of one the following is Lewis base?

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BF3

H+

NH3

Ag+

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