Question # 1

In the formation of H2O molecule, the oxygen atom makes use of.

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2p orbitals

sp hybrid orbitals

Sp2 hybrid orbitals

Sp3 hybrid orbitals

Molecule is a diatomic

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Nitrogen

Phosphorous

Arsenic

Antimony

The following oxo acids have been arranged in the order decreasir acid strength identify the correct order.

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III > IV > II > I

III > II > I >IV

I > II >III > IV

IV > III > II > I

Which one of the following elements shows the most stable oxidation state of +1

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AI

Ga

In

TI

Pick out the incorrect statement regarding ozone.

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O3 is an unstbale dark blue diamagnetic gas

The central oxygen in O3 is sp3 hybridized

It cause the tailing of mercury

It does not react with KOH

The pH of the 0.0032 M H2SO4 is.

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3.2

4.0

2.198

1.0

The electrolysis of molten metal hydride will produce dihydrogen gas.

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At cathode

At anode

At both the electrodes

At none of the electrodes

Stainless steel consists of which elements.

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Fe only

Cr only

Fe and Ni

Fe ,Ni and Cr

The configuration of valence shell of certain atom X is 3s2 , 3p5, which valences can it exhibit.

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1,3 only

1,5 only

1,3,5,7

1,3,4

The types of coordinate compounds.

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Labila

Inert

Both A and B

None of above

Major achievement of CFT is

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Interpreting the color

Adsorption spectra

Both A and B

None of above

H2SO4 is manufactured by

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The lead chamber process

The contact process

Both A and B

The Ostwald's process

Which of the following elements has the highest value of second ionization energy.

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Lithum

Beryllium

Boron

Magnesium

Which of the following elements has the highest value of IE.

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Na

K

Mg

Ca

The variable valency is generally observed in case of.

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Transition elements

Inert gases

Normal elements

Non- metallic elements

Which of the following process is involved in the purification of crude metals.

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Liquation process

Oxidation process

Distillation process

Electro refining

HCIO evolves Cl2 and O2 when dissolve

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Ca

Ni

Cu

Any of above

Which one of the following has the biggest electron affinity.

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F2

Cl2

Br2

I2

Oxalic acid when heated withe conc. H2SO4 it gives out.

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H2O and CO2

CO and CO2

CO2 and H2S

Oxalic sulphate

Any substance which has solidified from the liquid state with crystallization is known as

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Steel

Fibre

Glass

Asbestos

Elements of group 14 have the electronic configuration of their outer shell as

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ns2 np3

ns2 np2

ns2 np6

ns2

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