Question # 1

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

The most electronegative element of group V-A is

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N

P

Sb

Bi

An element that has a high ionization energy and tends to be chemically inactive would most likely to be

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An alkali metal

A transition element

A noble gas

A halogen

Which is an aromatic compound

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Anthracene

Naphthalene

Toluene

All of the these

When hydrolyzed, protein yields.

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Fatty acid

Glycerol

Amino acid

Nucleosides

Which one of the following polymers is called a polyamide

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Nylon

Rayon

Terylene

Orlon

Which of the following noble gas is used for arc welding and cutting

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Helium

Argon

Xenon

Radon

Formula of marsh gas is

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CH₄

C₂H₆

C₃H₆

C₄H₁₀

Grignard 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

Which one of the following alkanes will be formed by the hydrolysis of ethyl magnesium bromide

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Methane

Ethane

Butane

do not hydrolysed

A polymeric substance that is formed in the liquid state and then hardened to a right solid is called a

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Fiber

Plastic

Varnish

Polyamid resin

Corundum is

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Al2O3

Na2AlF6

Quartz

Calcium

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

Formula of chloroform is

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CH₃Cl

CCl₄

CH₂Cl₂

CHCl₃

Essential amino acids are those which

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Are present in every protein

Must be supplied to body through diet

Contain two carbocyclic acid and one amino group

Is syntherised by our body

The nitrogen present in some fertilizers helps plants

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to fight against diseases

to produce fat

to undergo photosynthesis

to produce protien

The Milk of magnesia is used for the treatment of

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Basicity

Rancidity

Acidity

Jaundance

Which one of the following gases is used welding purpose usualy.

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Methane

Ethane

Ethene

Acetylene

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