Question # 1

Ethylene glycol can be prepared with the reaction of KMnO₄ and _____

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CH = CH

CH₃ - CH₃

CH₃CH₂CH₃

CH₂= CH₃

The order or reactivity of hydrogen halides with alkenes is.

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HI/Br

HBr > HI

HCl > HBr

HBr>HCl

Almost all aircrafts fly in:

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troposphere

mesosphere

stratosphere

themosphere

The % age of nitrogen and oxygen in our atmosphere is:

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80

90

95

99

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

The waste products driven out because of the combustion of fossil fuels.

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Primary pollutant

Secondary pollutant

Tertiary pollutant.

None of them

In which of the following groups, oxygen is attached on both sides with carbon atoms?

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Ketone

Ether

Aldehyde

Ester

Functional group of Alcohols is

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-COOH

-C=0

C-O-C

-OH

Amont the followign substitution reaction is characteristics of.

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Alkanes

Alkenes

Alkynes

None of these

Forest fires and burning of wood emit.

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CO₂

NO₂

SO₂

Cl₂

Which base is more corrosive?

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NH₄OH

NaOH

Ca(OH)₂

AL(OH)₂

___________ is not green house effect.

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Increase of food chain

increase atmospheric pressure

Increase of sea level

Increase of flood risks

About 99% of atmospheric mass lies in.

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35 km

30 km

15 km

16 km

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