Question # 1

Aluminum reacts with nitrogen to form

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AIN

Al₂N

Al₂N₃

Al₄N₆

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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propane

propanoic acid

propanal

propanol

Which halogen occurs naturally in a positive oxidation state.

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Fluorine

Chlorine

Bromine

Iodine

S_N2 mechanism involves

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1st order kinetics

2nd order kinetics

3rd kinetics

zero order kinetics

Which one of the followings is major product when HBr reacts with 2-butene

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2- bromobutane

1- bromobutane

1-1 di bromobutane

1,2 di bromobutane

Which is used in the leather industry

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Borax

Boric acid

Boric oxide

Tetra Boric acid

Ionization energy of calcium is.

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Lower than that of barium

Lower than that of magnesium

Higher than that of beryllium

Lower than that of strontium

In Pakistan pulp is usually bleached with Cl2. The residual chlorine is removed from pulp by an antichlor which is

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dil HCl

dil NaOH

Water

NaCl

Fluorine is in group VIIA of periodic table. Its chemistry will most closely resembles that of.

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Argon

Boron

Iodine

Sulphur

Acetaldehyde react, with Grignard reagent to form

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Primary alcohol

Secondary alcohol

Ter alcohol

Carboxylic acids

Which one of the following has lowest first ionization energy.

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Li

Na

Rb

Cs

The disease can be eradicated by using pesticides.

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Malaria

Yellow fever

Sleeping sickness

All of these

Which process is used to convert vegetable oil to vegetable ghee.

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Hydrolysis

Oxidation

Esterification

Hydrogenation

Which element shows highest oxidation state among these

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Zn

Fe

Mn

Sc

Which compound will have the maximum repulsion with water

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C₆H₆

C₂H₅OH

C₃H₇OH

CH₃OCH₃

The reactivity order of alkyl halides for a particular alkyl group is

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Fluoride > Chloride > Bromide > iodide

Chloride > Bromide > Fluoride > iodide

Bromide > iodide > chloride > Fluoride

Iodide > Bromide > Chloride > Fluoride

In [Co(NH3)6]+3 the coordination number of cobalt is.

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Zero

Two

Four

Six

Which one of the following compounds show geometrical isomerism in it.

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1- pentene

1,1 dichloro ethane

all of these

2- Pentene

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