Question # 1

The number of carbon atoms present in gasoline or petrol.

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5-10

6-10

7-10

8-10

Extraction of metals from its ores is called.

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Metallurgy

Mining

Griding

All

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Imperial chemical industries was established in.

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1942

1944

1950

1990

Which contains sufficient amount of metal?

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Mineral

Ores

Rocks

Soil

Chemical formula of copper glance is:

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Cu2O

Cu2S

CuFeS2

CuSO4

Petroleum fraction having composition C₅ to C₇ is.

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Petroleum Gas

Petroleum Ether

Kerosine oil

Gasoline or petrol

Formula of Urea is.

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KCNO

H₂N-CO-NH₂

HN-CO₂-NH

H₃N-CO-NH₃

Which one is not the fraction of residual oil?

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Paraffin wax

Asphalt

Fuel oil

Coke

How many percentage blister copper is pure?

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95%

75%

98%

100%

Blonde hair contains compounds of:

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molybdenum

iron

titanium

copper

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

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