Question # 1

Terylene is madeby polymerization of terephthalic acid with

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Ethylene glycol

Phenol

Ethanol

Catechol

3-d series elements are present in:

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First period

Second Period

Third period

4th period

Chemical reactivity of elements depends upon their characteristic:

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Shape.

Color.

Electronic configuration.

Sizes

Which of the following is an ortho-para directing group

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Keeping in view the size of atoms, which order is the correct one

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > l

Benzene is not prepared from

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Acetylene

Phenol

Benzoic acid

Bromo benzene

Natural rubber is a polymer of

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Butadiene

Ethyne

Styrene

Isoprene

The fourteen elements following actinium are known as

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Lanthanones

Lanthanides

Rare earths

Actinides

If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a

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primary alcohol

Secondary alcohol

Tertiary alcohol

Aromatic alcohol

Chloroflurocarbon releases a chemical harmful to ozone

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Fluorine

Chlorine

Nitrogen peroxide

Sulphure dioxdie

Which of the following statements is correct?

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Phenol is less acidic than ethyl alcohol

Phenol is more acidic than ethanol

Phenol is more acidic than carbonic acid

Phenol is more acidic than CH₃COOH

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

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Na₂CO₃

NaHCO₃

Ca(OH)₂

CaCO₃

The quantum number which determines the shape of the orbital is

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principal

azimuthal

magnetic

spin

Most hazardous metal pollutant of automobile exhaust is

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Mercury

Lead

Cadmium

Copper

The reaction-method that does not give an alkane is

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Catalytic hydrogenation of alkanes

Wurtz reaction

Hydrolysis of alkyl magnesium bromide

Dehydrohalogenation of an alkyl halide

Orthophosphoric acid is

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Monobasic

Dibasic

Tribasic

Tetrabasic

The amount of electricity that can deposit 108 g of silver from silver nitrate solution is

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1 ampere

1 coulomb

1 faraday

2 ampere

The reaction rate is expressed in the units of

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Mol dm^-3S^-

Mol dm^-3

Mol dm^-3N^-

dm^-3S^-

In the reaction of oxalic acid with KMnO₄and H₂SO₄is slow at the beginning but after sometimes the reaction becomes faster due to

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Formation of MnSO₄which acts as 'Auto catalyst

Formation of CO₂which acts as 'Auto catalyst

Formation of K₂SO₄which acts as 'Auto catalyst

Evolution of O₂gas which acts as 'Auto catalyst

The value of K_pis greater than K_cfor a gaseous reaction when

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Number of molecules of products is greater than the reactants

Number of molecules of reactants is greater than those of products

Number of molecules of reactants and products equal

Catalyst is added

The empirical formula of benzene is determined by

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IR spectra

U.V

Elemental analysis

NMR spectra

Oleum is

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Castor oil

Oil of vitriol

Fuming of H₂SO₄

None of them

Replacement of hydrogen by NO₂group is called

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Sulphonatioin

Hydration

Nitration

Cracking

Alkynes are colourless & odouless except

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Acetylene

Propyne

Butyne

Pentyne

On the basis of VSEPR theory SO₂is a

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Liner molecule

A bent molecule

A strong molecule

A gaseous molecule

Which metal of Group-II A of the periodic Table, will form the least ionic chloride

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Be

Mg

Ca

Sr

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

Reactivity of alkyl halides with magnisium is of the order:

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Rl > RBr> RCl > RF

RBr > RCl >RF > Rl

RCL > RF > Rl > RBr

RF >RI >RBr > RII

Which of the following is not a sub-atomic particle

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Electron

Proton

Neutron

Deuteron

Which carbohydrates is an essential constituent of plant cells?

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Starch

Cellulose

Sucrose

Vitamins

For a chemical reaction to take place the particles must have sufficient energy for the effective collisions, the energy is called

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Average energy

Activation energy

Potential energy

Collision energy

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