Question # 1

Men residence time of methane in atmosphere in years is:

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1-7

2-7

3-7

4-7

The nature of the attractive force in acetone and chloroform are

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dipole-induced dipole forces

dipole-dipole forces

ion-dipole forces

instantaneous forces

Example of basic essential amino acids

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Arginine

Histidine

Lysine

All of the above

Which one of the following statements about glucose and sucrose is incorrect:

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both are soluble in water

both are naturally occurring

both are carbohydrates

both are disacharides

According to Avogadros law 1 mole of gas at S.T.P has a volume of

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22.4 dm³

24 dm³

24000 cm³

2m³

If the pressure of gas reduced to one half and temperature is increased twice then density of gas will be

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4 times

2 times

1/2 times

1/4 times

The main source of natural fibre is

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animal fibres

vegetables fibres

mineral fibres

all of the above

At constant pressure, if the original volume is 546 cm³at which temperature the volume of gas 552 cm³

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1°C

2°C

3°C

4°C

Rancidification of facts and oils is due to:

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oxidation reaction

hydrolysis reaction

both a and b

hydrogenation reaction

Variable Oxidation state of is related to transition elements

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empty d-subshells

Completely filled

Partially filled d-subshell

d-d transition

Ethane nitrile can be converted into ethanoic acid through......intermediate

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Ethyl alcohol

AcetyI chloride

Acetamide

Methyl cyanide

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Elimination Esterification

Elimination Isomerisation

Oxidation Exterification

Oxidation Oxidation

Grignard reagent is prepared by the reaction of magnesium metal with alkyl halide in the presence of

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Alcohol

Water

Suephuric acid

Dry ether

The number of atoms present in molecule determines its:

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Molecularity

Atomicity

Basicity

Acidity

Which of the following half molar solutions will have lowest freezing point

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Solution of non-volatile, none electrolyte

Solution of non volatile, weak electrolyte

Solution of non volatile strong electrolyte

Solution of volatile, non electrolyte

In macromolecules DP stands for

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Dissociation parameter

Dissociation polymer

Degree of polymerization

None of these

Stainless steel contains Cr upto

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12%

18%

10%

5%

Amino acids are bifunctional organic compounds what are the two function groups

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Carboxylic acid and alcohol

Alcohol and aldehyde

Carboxylic acids and ketone

Amino group and carboxylic acid

Ether show the phenomenon of :

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Position isomerism

Functional group isomerism

Metamerism

Cis-trans isomerism

When CO₂is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

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Propane

Propanoic acid

Propanal

Propanol

What is the name of the comlex [Ni(CO)₄]

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Tetracarbonylnickel (o)

Tetracabonylnickel

Tetracabonylnickel (II)

Tetracabonylnickel (IV)

Odour of alkene is:

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Fruity

Odourless

Zarlic like

Irritating

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