Question # 1

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

Which of following is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

At the time of partition, How many industries wee present in Pakistan.

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30

32

34

40

Water molecule show structure.

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Tetrahedral

Trigonal

Pentagonal

All of them

Which of one the following is Lewis base?

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BF3

H+

NH3

Ag+

Which one of the following is not air pollutant.

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CO₂

CO

NO₂

O₂

The process of removal of gangue form the ore is technically known as:

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concentration

purification process

metallurgy

refining

How many % age of urea is used as fertilizers?

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80%

90%

95%

98%

Which one of the following statements about glucose and sucrose is incorrect.

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Soluble in water

Naturally occuring.

Carbohydrates

Disaccharides

The order or reactivity of hydrogen halides with alkenes is.

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HI/Br

HBr > HI

HCl > HBr

HBr>HCl

Dehydrohalogenation of vicinal-dihalides take place in the presence of.

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NaOH

KOH

NaCl

None of these

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Lipids are macromolecules made up of.

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Fetty acids

Amino acids

Nucleotides

None of them

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