Question # 1

Which compound show hydrogen bonding

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C₂H₆

C₂H₅Cl

CH₃OCH₃

C₂H₅OH

The strength of binding energy of transition elements depend upon

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number of electron pairs

number of unpaired electron pairs

number of neutrons

number of protons

When CO2 is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is.

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Propane

Propanoic acid

Propanal

Propanol

In which process, an amino acid is produced

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Wurtz synthesis

Strecker synthesis

Kolbe synthesis

Cannizzaro reaction

Micro nutrients are required in quantity ranging from

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4 g - 40 g

6 g -200 g

6kg - 200 kg

4 kg - 40 kg

Which of the following are alkaline earth metals?

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Be, Mg, Ca

Li, Na, K

Fe, CO, Ni

B, Al, Ga

Which compound is the most reactive

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Benzene

Ethene

Ethane

Ethyne

Grignard's reagent is reactive due to

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the presence of halogen atom

the presence of Mg atom

the polarity of C-Mg bond

none of the above

The percentage of clay and liem stone in cement is in the ratio of.

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1 : 1

1 :2

1:3

3:1

Acetamide is prepared by

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Heating ammonium acetate

Heating methyl cyanide

Heating ethyl acetate

The hydrolysis of methyl cyanide

Which of the following is a typical transition metal

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Sc

Y

Ra

Co

Geometrical isomerism in alkene is due to.

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C = C free rotation of bond

No C = C free rotation of bond

Presence of multiple bond only

Opticla rotation due to multiple bond

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

Sulphur is essential constituent for plants. Which is not role of sulphur

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Chlorophyll development

Development of root system

Constituents of some proteins

Increase transpiration force

Arsenic impurities in contact process are removed.

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By prolong heating the gases

By treatment with Fe(OH)3

In scrubbing tower

In absorption tower

Which oxide is amphoteric in nature.

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BeO

MgO

CaO

BaO

Common names of aldehydes are derived from the common names of.

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Alcohol

Ketones

Carboxylic acids

Alkenes

Which of the following is non-typical transition metal

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Fe

Mn

Zn

Ni

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