Question # 1

Which substances haveΔH =ΔE

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Solids

Liquids

Gases

Liquids and solids

Diversity of organic compounds in millions is:

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Four

Five

Six

Seven

In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?

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Two

Three

One

Four

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Which of the following polymers is used for weather resistant paints

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Arcylic resins

Polyvinyl acetate

Polystyrene

PVC

Ethanol can be converted into ethanoic acid :

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Hydrogenation

Hydration

Oxidation

Fermentation

Under what condition of temperature and pressure the formation of atomic hydrogen from molecular hydrogen will be favourd

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High temperature and high pressure

Low temperature and low pressure

High temperature and low pressure

:Low temperature and high pressure

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Fe is reduced

Fe is oxidized

Cl₂is oxidized

None of these

Which carbonate of alkali metals is insoluble in water

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Na₂CO₃

K₂CO₃

Li₂CO₃

Cs₂CO₃

Dehydrohalogenation of alkyl halides produces

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Alcohol

Alkane

Alkene

Alkyne

Hypo is used in photography for

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Developing picture

Picture printed

The colour of picture

The fixation of picture

Which has soapy touch?

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Na2B4O7

H3BO3

Ca2B6O11

HBO2

In which of the following cases, the reaction goes farthest to completion

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K = 10³

K = 10^-2

K = 10

K = 10⁰

Zeotropic mixture

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Obey Henry's law

Obey Raoult's law

Does not obey Raoult's law

Obey Dalton's law

When acetic acid and ethanol react together an ester is formed which is called

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Ethyl ester

Ethanoic acid

Ethyl acetate

Smallest particle of an element which may or may not have independent existence is known as:

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A molecule

An ion

An atom

An electron

A compound contains one atom of oxygen and % of O 34.78, then molecular mass of compound is

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46

78

110

180

For which system does the equilibrium constant. K_chas units of

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Vinegar made form cane sugar, now a days synthetically contains

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Citric acid

Lactic acid

Acetic acid

Palmitic acid

Which statement is incorrect about standard hydrogen electrode

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Its oxidation and reduction potential is zero

It consists of Pt wire dipped on 1 molar HCI solution

The electrolyte is 1 molar NaOH solution

H₂gas is passes in it at 1 atmospheric pressure

Which among the following species has the highest ionization energy?

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Ne

F

Li

B

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

Al

Which is not a method for solid waste management

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Landfill

Incinerating

Recycling

None of these

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

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Tetracarbonylnickel (o)

Tetracabonylnickel

Tetracabonylnickel (II)

Tetracabonylnickel (IV)

In KO₂the oxidation state of oxygen is

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-2

-1

+1/2

-1/2

Ascorbic acid contains 40.92% carbon, 4.58%, hydrogen and 54.4% oxygen. The empirical formula is

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C₃H₄O₃

C₂H₄O₃

C₃H₅O₄

C₂H₃O₁

Derivative of water is:

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Alcohals

Phenols

Either

Phenol

______ gives peroxide

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Li

Ba

Sr

Be

______ is used in breathing equipments for mountaineers and in space craft

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Li₂O

BeO

N₂

KO₂

Peat contains about

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60% carbon

80% carbon

78% carbon

50% carbon

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

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