Question # 1

For what value of Kc almost forward reaction is complete

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Kc.=10(-30)

Kc.=1

Kc = 10(30)

Kc,=0

Carboxylic acid having three carboxyl groups are:

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Mono carboxylic acid

Di-carboxylic acid

Tri-carboxylic acid

Tetra carboxylic acid

Which of the following tests helps to distinguish between alkyne and alkene?

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Lucas test

Tollen's reagent test

Baeyer's test

Fehling's solution test

Dehydrogenase is an example of

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ligase

oxidoreductase

lyase

hydrolase

Catalyst used for ammonia synthesis is

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Cu

Co

Zn

Fe

Macromolecular hypothesis acceptance due to efforts of standinger came about in:

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1910

1920

1930

1940

Which one of the following enzymes brings about the hydrolysis of fats?

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urease

maltase

zymase

lypase

Which substance among the following used in points to improve the mechanical properties?

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filter

binder

pigment

stablizer

Glucose and gulose are ____ for each other

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Geometrical isomers

Metamers

Apimers

None

A complete food contains at least:

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three nutrients

ten nutrients

six nutrients

eight nutrients

Kinetic energy of one mole of an ideal gas at 300 K in kJ is

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34.8

3.48

3.74

348

A solution is a homogeneous mixture of two or more kinds different :

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Molecular.

Covalent substance

Ionic Substances

Both (a) and (c)

Freezing point depression is measured by

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Beckmann's apparatus

Lands Berger's method

Antifreeze apparatus

All of the above

The range of UV-B is:

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320 to 400 nm

200 to 280 nm

280 to 320 nm

50 to 400 nm

The coinage metals are

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Ni, Pd, Pt

Cu, Ag, Au

Zn, Al, Pb

Fe, Si, Sn

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Acidified AgNO_3(aq)

Fehling's solution

Na

Na₂XO_3(aq)

The substance which increases rate of reaction but remains unchanged at the end of reaction is called :

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Catalyst.

Indicator.

Promoter.

Activator.

Which reagent is used to reduce a carboxylic group to an alcohol

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H₂/Ni

H₂/Pt

NaBH₄

LiAIH₄

Which of the following is hypnotic?

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Acetaldehyde

Metaldehyde

Paraldehyde

None

During electrolysis of KNO₃, H₂is evolved

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Anode

Cathode

Both a and b

None

Which of the followings is not a nulceophile

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OH^-

NH₃

C₂H₅O^-

Br₂

Alkyl halides are considered to be very reactive compounds towards nucleophiles because

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They have an electrophilic carbon

They have an electrophilic carbon and a good leaving group

They have an electrophilic carbon and a bad leaving group

They have a nucleophilic carbon and a good leaving group

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