Question # 1

Which of the following is not a biodegradable polymer.

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Protein

PVC

Cellulose

Nucleic acid

The electrode Pt/Fe2+ (C1) Fe 3+ (C2) belong to the type.

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Gas electrodes

Inert metal electrodes

Magam electrodes

Metal metal insoluble salt electrode

Which property is not exhibited by carbon in its compounds.

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Forming bounds to other carbon atoms

Formation multiple forms

Exhibiting allotropic forms

Forming compounds with coordination number beyond four

Which of the following process is used for the removal of gases.

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Precipitation

Chemical reaction in the atmosphere

Absorption

All above

A thionic acid

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H2S2O3

H2S2O6

H2S2O8

H2S2O7

Which of the following element has six electrons in the valence shell but cannot exhibit a maximum co valency of six.

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Sulphur

Oxygen

Selenium

Both A and B

Pick out incorrect statement.

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NF3 molecule has trigonal pyramidal structure.

It is practically incoluble in water and is only hydrolyzed, an electric spark is passed through a mixture with water vapour.

Dipole moment of NF3 is more than that of NH3

Nitrogn (III) oxide (N2O3) is an acidic oxide.

The alkaline hydrolysis of fat is know as

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Condensation

Esterification

Saponification

Emulsification

The alpha iron will become paramagnetic at temperature above

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770 C

550 C

660 C

440 C

A catalyst increases the rate of a reaction because.

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It provides the necessary energy to the colliding molecules to cross energy barrier

It decreases the heat of the reaction

It decreases the order of the reaction

It provides a different path of lower activation energy.

Which of the following compound will be optically active.

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Suceinic acid

Meso tartaric acid

Acetic acid

Lactic acid

A^o or 10 Dq is called crystal field.

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Energy

Splitting energy

Stabilization energy

None of above

What prefix in steel identification means composition varies from normal limits.

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E

B

X

F

Which of the following is the most stable towards heat.

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CaCO3

BaCO3

Na2CO3

MgCO3

Fullerene or bucky ball is made up of ________ carbon atoms.

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100

20

75

60

Which of the following statements is not relevant to the Plank's quantum Theory.

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Radiant energy is not absorbed or emitted continuously

Radiant energy is emitted or absorbed in the form of small packets of energy.

The quantum oflight energy is called photon

The energy associated with photon of radiation is directly proportional to the wavelength.

Which of the following has the highest melting poing.

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NaCl

Li Cl

KCl

Rb Cl

The valence shell electronic configuration of group III A is.

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ns1 p2

ns2 p1

ns3p2

ns2p2

Linear molecules have ____________ axis of rotation

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C1

C2

C

C3

Which of the following configuration of an ionic species represents psedue noble gas configuration.

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ns2

ns2 np6

ns2 np6 nd 10

ns2 np3

The IUPAC name of C2H3, CO , OC OC2H5 in

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Prepanoic anhydride

Ethanoic anhydride

Diketoethoxy ether

None of the above

Which cast iron is hard and wear resistant.

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Grey iron

White iron

Melleable iron

None of these

Which of the following are anionic detergents.

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Sodium salts of sulfonated long chain alcohol

Ester of stearic acid and polythlene glycol

Quaternary ammonium salt of amine with acetate ion

Sodium salts of sulfonated long chain hydrocarbons

Potentiometry is based on the measurement of which physical property.

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Electrical conductance

Electrical potential

Thermal conductance

Current

Which of the following proportion is associated with the covalent nature of the compound.

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It conducts electricity in molten stater or aqueous state

It is a non electrolyte

It has high m.p.

It is a compound of a metal and non metal.

Which of the following device is used to measure the surface tension.

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Polarimeter

Viscometer

Refractometer

Stalagnameter

Bases and reducing agents are electron giving agents and also called as.

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Electrodotic

Electrophile

Nucleophile

None of above

The size of E coli bacteria is._____________ nm

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75000

2000

200

5

Which of the following methods gives the number average molecular weight of a polymer.

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Light scattering method

Osmotic method

Sedimentation equilibrium method

Viscosity method

VBT is unable to explain the nature of some of the complexes of.

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Cobalt

Copper

Nickle

Manganese

Vet days are generally applied to the fabric in the form of.

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Mordants

Leuco base

Oxidised base

Dispersed dyes.

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