Question # 1

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

In t-butyl alcohol, the tertiary carbon is bonded to:

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Two hydrogen atom

Three hydrogen atoms

One hydrogen atoms

No hydrogen atoms

Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

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XY

X₂Y

X₂Y₃

XY₂

Caroxyl group has functional in it.

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one

two

three

four

Which are used as essences (flowers)?

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Aldehydes

Ketones

Alcohols

Esters

Which of the following will be good conductor of electricity

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Pure distilled water

Molten NaCl

Dilute solution of glucose

Chloroform

Which element has highest oxidation potential

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Li

Be

Ba

Ra

Statement enthalpy of combustion of H₂is -285.8 KJ mole^-1then which is the standard enthalpy of formation of water

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+285.8 KH mole^-1

-285.5 KJ mole^-1

Zero

-218 KJ mole^-1

Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point

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Methanol + CCI₄

Methanol + acetone

Ether + HCI

Acetone + chloroform

Which of the following has the maximum number of unpaired d-electrons?

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Zn

Fe²⁺

Ni³⁺

Cu⁺

According to modern theory of chemical bonding atoms form bonds as it leads to a:

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Increase in energy.

No energy change.

Decrease in energy.

First decrease then increase in energy.

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

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Tetracarbonylnickel (o)

Tetracabonylnickel

Tetracabonylnickel (II)

Tetracabonylnickel (IV)

Which is litharge or massicot?

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PbO

Pb₂O

Pb₃O₄

PbO₂

How many structural acid cis-trans isomers are there for dichloroprepe, C₃H₄Cl₂

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3

5

6

7

Which of the following derivative can not be prepared directly from acetic acid

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Acetamide

Acetyl chloride

Acetic anhydride

Ethyl acetate

Atmosphere of big/metropolitan cities is polluted most by

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Automobile exhausts

Pesticide residue

Household waste

Radio-active fall out

How many monochlorobutanes will be possible on chlorination of n-butane?

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1

2

3

5

Which of the following waste material is not recycled for use again

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Paper

Plastic

Hides of animals

Glass

Which one of the following is not a buffer

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H₂CO₃+ NaHCO₃solution

H₃PO₄+ NaH₂PO₄solution

Hl + Nal solution

NH₄OH + NH₄CI solution

For which system does the equilibrium constant, kc has units of (concentration) ?

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N₂+3H_2-------2NH₃

H₂+L₂---------2HL

2NO₂----------N₂O₄

2HF--------H2+F₂

Which one of the following is a water soluble vitamin

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D

K

A

Ascorbic acid (Vic C)

Which of all following compound is not possible

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Azeotropic mixture of HCl and water has

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48% HCl

22.2% HCl

36% HCl

20.2% HCl

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

Cyclone collector is used for minimizing

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Radioactive pollution

Air pollution

Noise pollution

Water pollution

The specific conductance of a 0.1 N KCl solution at 23°C is 0.012 ohm^-1cm^-1. The resistance of cell containing the solution at the same temperature was found to be 55 ohm. The cell constant will be

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0.142 cm^-1

0.66 cm^-1

0.916 cm^-1

1.12 cm^-1

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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Propane

Propanoic acid

Propanal

Propanol

The heat of formation of graphite and P(white) is ______ KJ/mole

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0.00

-273.0

+8.7

813.99

______ gives peroxide

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Li

Ba

Sr

Be

Which element form group 15 gives most basic compound with hydrogen?

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Nitrogen

Bismuth

Arsenic

Phosphorus

According to MO Theory, the species O₂+ possesses

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bond order of 2.5

three unpaired

diamagnetic character

stability lower then O₂

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