Question # 1

The maximum number of electrons in a subshell for which / = 3 is

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14

10

8

4

Carbon atom holding halogen in aryl halides is

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Sp²-hybridesed

Sp³-hybridesed

Sp-hybridesed

Sp³d -hybridesed

The symbol of the element whose atoms have the outer most electronic configuration 2s² 2p³ is

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N

Li

P

Na

Which of the following belongs to the halogen family?

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Francium

Polonium

Radium

Astatine

The weight of 11.2 liters of CO₂ at S.T.P. would be

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88 g

44 g

32 g

22 g

According to MO Theory the species O⁺₂ possesses

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Bond order of 2.5

Three unpaired electrons

Diamagnetic character

Stability lower then O₂

Which is the most volatile compound?

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HI

HCI

HBr

HF

The last orbit of argon would have electrons

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8

18

2

6

At 500 K the equilibrium constant for reaction cis-C₂H₂CI₂ trans-C₂H₂CI₂ is 0.6. At the same temperature the equilibrium constant for the reaction trans-C₂H₂CI₂ cis-C₂H₂CI₂ will be

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0.60

1.67

0.66

2.6

Sodium metal cannot be stored under

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Benzene

Kerosene oil

Alcohol

Toluene

Benzene + Ozone → Y. in this sequence Y is

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Benzene monoozonide

Benzene diozonide

Benzene triozonide

Succinic acid

The structure of XeF6

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Distorted octahedral

Pyramidal

Tetrahedral

None of the above

According to MO theory, the species O⁺₂

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Bond order of 2.5

Three unpaired electrons

Diamagnetic character

Stability lower then O₂

Which has largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reduction

Nitration, Chlorination, reduction

Nitration, reduction, chlorination

Nitration, reduction, acylation, chorination, hydrolysis

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

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1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol.

DDT is formed from

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Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and benzene

Chlorobenzene and chlorine

The total pressure exerted by a number of non-reacting gases is equal to the sum of partial pressure of the gases under the same conditions is known as

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

The number of atoms contained in 11.2 L of SO₂at S.T.P are

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3/2 x 6.02 x 10²³

2 x 6.02 x 10²³

6.02 x 10²³

4 x 6.02 x 10²³

In N.W.F.P the phosphate fertilizers are produced at

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D.I.Khan

Haripur

Nowshera

Dargai

Toluene can be oxidized to benzoic acid by

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KMnO₄(alk)

K₂Cr₂O₇(acidic)

Both

None

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

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