Question # 1

Hexamethylene reacts with _______ to prepare nylon 6,6

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acetic acid

adipic acid

formic acid

none of above

d-d transition cannot be observed in

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Cr

Cu

Mn

Zn

A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is

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50kJ

100 kJ

150kJ

5000 kJ

Stability of Cu-metal is due to filled of d-orbital

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Half

Completely

Partially

Quarterly

The energy produced by a carbohydrate is:

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3 kcal/gm

2kcal/gm

6kcal/gm

4kcal/gm

A covalent bond may be

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100% covalent

Partial ionic

100% ionic

Both a and b

Choose the correct statement:

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SO₂ affects the nucleus

SO₂ affects plasmodesmate

SO₂ affects cell wall

SO₂ affects all membrane systems

Liquid crystals are used for the early diagnosis of breast cancer by

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injecting liquid crystals

taking liquid crystals as diet

painting liquid crystals on the surface of breast

inhaling the smell of liquid crystals

Joule is a unit of energy which is defied as

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Kgm^-2s^-2

Kgm²s^-1

Kgms^-2

Kgm²s^-2

Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect

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Nose

Stomach

Eyes

Ears

A pressure of 1Nm^-2 is equal to:

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one bar

one pascal

stalagmometer

one aomosphere

Polyester resins have special use in:

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Clothing

Paints

Emulsion

Floor covering

If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required

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0.5

1.0

1.5

2.0

For what value ofK_{c almost forward reaction is complete :}

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K_{c =}10³⁰

K_{c =}10^-30

K_{c =}0

K_{c =}1

Neutrons was discovered by

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Mosely

Milliken

Chadwick

Ruherford

Potassium hexacyanoferrate (II) has the formula

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K₄[Fe(CN)₆]

K₃[Fe(CN)₆]

K₂[Fe(CN)₆]

K [Fe(CN)₆]

Which shows maximum catenation property?

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S

Se

Te

O

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Identify the compound which has a bond angle of 109.5°

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Ethyne

Ethere

Methane

Benzene

Alkyl halides on treatment with Zn and HCI gives

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Alkanes

Alkenes

Alkynes

Alcohols

10% aqueous solution of NaCI has molarity

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1.7 M

2.7 M

0.17 M

3.7 M

The quantum number which describe the orientation of the orbitals is

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Spin quantum number

Principle quantum number

Azimathal quantum number

Magnetic quantum number

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