Question # 1

An amion acid exists in the form of Zwitter-ioin which has:

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one + ve charge

one - ve charge

one +ve and -ve charge

two +ve charge

Choose the chief air pollutant among the following which depletes ozone layer:

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carbon monoxide

carbon dioxide

chloroflurocarbons and nitrogen oxides

sulphur dioxide

The fibre which is made form acrylonitrile as monomer

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PVC

rayon fibre

acrylic fibre

polyester fibre

The actual volume of gas molecules is considered negligible at following pressures

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2atm

4atm

6 atm

8 atm

Which one of the following is an organic compound?

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Calcium carbide

Calcium cyanide

Carbon disulphide

None of these

The temperature in the incineration of industrial and hazardous waste process has a range of:

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950-1300C

250-500C

500-900C

900-1000C

Which of the following is the unit for pressure of a gas in system international

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Nm^-2

mm of Hg

atmosphere

torrr

Thrombin is locally used to stop

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Heart disease

Bleeding

Blood

None of these

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

Which of the following is addition polymerization

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PVA

Polystyrene

Both

None

Which of the following statement about ribose is incorrect

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Poly hydroxyl compound

It is an aldo sugar

Contain six carbon atoms

It exhibit optical activity

Of the given alkali metals, the one with smallest size is

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Rb

Cs

K

Na

What mass of NaOH is required to prepare 2.5 dm³of 1.5 M NaOH solution

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130 g

140 g

150 g

160 g

At what pH glycine shows the structure H_3N⁺-- CH₂-- COOH

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2

7

10

14

Which statement about an atom is true ?

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The number of neutrons is not equal to number of electrons

Mass number is less than atomic number

All the elements have only one mass number

Mass number can be equal to atomic number

The molar boiling point constant is the ration of elevation in boiling point to :

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Molarity

Mole fraction of solvent

Mole fraction of solute.

Orthophosphoric acid is

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Monobasic

Dibasic

Tribasic

Tetrabasic

Mercury is the only metal which is liquid at 0°C. this is due to its

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Very high ionization energy and weak metallic bond

Low ionization potential

High atomic weight

High vapour pressure

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The toxic organic compounds and heavy metals and metalloids results in contamination of

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Surface water

Ground water

Both surface and ground water

Neither surface nor ground waters

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The other name for distribution law is

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Dispersive law

Partition law

Avogadro's law

separation law

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