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Chemistry > Organic Chemistry > Flashcards

Organic Chemistry Flashcards

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1
Q

Chemist who synthesized urea

A

Friedrick wohler in 1828

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2
Q

Vital force theory was proposed by

A

Berzelius in 1809

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3
Q

Features of organic compounds

A

Catenation
Non-ionic character (covalent bond)
Similarity in behavior
Complexity of structures
Isomerism
Rate of organic reactions
Solubility

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4
Q

C2H5OH

A

Ethyl alcohol

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5
Q

CH3-O-CH3

A

Dimethyl ether

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6
Q

Sources of organic compounds

A

Coal
Natural gas
Petroleum

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7
Q

Percentage of coal to bake bricks in line kilns

A

80%

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8
Q

Major portion of natural gas is

A

Methane

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9
Q

% of ethane in natural gas

A

8-10%

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10
Q

Natural gas consists of

A

Methane, ethane, propane, butane and small amount of CO2, N2, H2S and He.

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11
Q

Total number of oil refineries in Pakistan

A

4

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12
Q

Name of oil refineries in Pakistan

A

Attock oil refinery
National refinery Ltd.
Pakistan refinery Ltd.
Pak-Arab Refinery

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13
Q

Total coal resources of Pakistan are estimated to be

A

184 billion tonnes

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14
Q

Types of cracking

A

Thermal cracking
Catalyst cracking
Steam cracking

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15
Q

Thermal cracking is used to produce

A

Unsaturated hydrocarbons such as ethene and propene

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16
Q

Catalytic cracking produces

A

Gasoline

17
Q

Steam cracking is used to produce

A

Lower unsaturated hydrocarbons

18
Q

Properties of a fuel having octane number

A

Less knocking
Burns smoothly in combustion engine
Increase the efficiency of engine

19
Q

Knocking order

A

Straight chain paraffins>branched chain paraffins>olefins>naphthalene>arenes

20
Q

N-octane after reforming produces

A

2,2,4-Trimethyl pentane (iso-octane)

21
Q

Octane number of 2,2,4-Trimethyl pentane (iso-octane) is

A

100

22
Q

Knocking number of n-heptane is

A

0

23
Q

Reforming increases

A

The quality of fuel

24
Q

Cracking increases

A

The quantity of gasoline

25
Q

Which agent acts as a negative catalyst as an anti knocking agent

A

Tetraethyl lead (C2H5)4Pb

26
Q

The crude petroleum is separated in fractions by:

A

Fractional distillation

27
Q

The compound that burns smoothly in an engine having octane number of 100 is

A

2,2,4-Trimethyl pentane

28
Q

Friendrick wohler synthesized urea by heating

A

NH4CNO

Chemistry (4 decks)

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