Question # 1

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

The temperature in the incineration of industrial and hazardons waster process had a range:

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950 to 1300°C

500 to 900°C

250 to 500°C

900 to 1000°C

Among the following, which one is nucleophile

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H+

Ca2+

OH-

Na+

For every reaction occurring in the body three is at least one type of

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enzyme

vitamin

protein

reactant

A single chlorine free radical can destory how many ozone molecules

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10

100

1000

10000

Which of the following alcohol cannot be produced by treatment of aldehydes or ketones with NaBH4

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I-propanol

2-Methyl-2-propanol

2-propanol

Ethanol

Which of the following is addition polymerization

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PVA

Polystyrene

Both

None

Ozone is usually produced in the

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South polar region

North pole region

Tropical region

Thermosphere zone

In purification of potable water the coagulant used is:

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Nickel sulphate

Copper sulphate

Barium sulphate

Aluminium sulphate

The optimum pH value for the enzyme ''Pepsin'' is:

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2

8

10

1.4

Which pair of elements will have the same type of bonds between their atoms in the solid state?

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carbon and calcium

lithium and boron

aluminium and phosphorus

nitrogen and carbon

Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide?

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Carbon monoxide

Diamond

Ethane

Methane

Which among the following species has the highest ionization energy?

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Ne

F

Li

B

The number of neutrons in the element ⁹₄Be is

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4

5

9

13

In an experiment the concentration of a reactant 'A' is doubled the rate increases four times. If concentration in tripled, then rate increases nint times. Thus the rate is proportional to ______ of concentration of 'A'

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Square root

Square

Twice

Cube

Series starting from57La,42Hf -80Hg is in the period:

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4th

5th

6th

7th

Mg becomes isoelectronic with neon when it

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Loses two electrons

Gains two electrons

Loses 1 electron

Gains 1 electron

When a weak acid is dissolved in water or a weak base dissolved in water, then in both cases the conjugate acid base pair is produced. The ionization constants K_aand K_bof a pair are related with each other as

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K_a= K_b

K_a. K_b= K_w

K_a. K_w= K_b

K_b. K_w= K_a

The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is

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0.5

1.5

2.5

2.0

The unit of the rate constant is the same as that of rate of reaction in :

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Third order reaction

Second order reaction

First order reaction

Zero order reaction

HNO₂acts as an/a

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Acid

Oxidizing agent

Reducing agent

All the three

Which of the following molecules have multiple bonds

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CH₄

C₂H₄

C₂H₆

CCI₄

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