Question # 1

The three dimensional silicate anion (Si2O5^2-)n is present in

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Beryl

Silica

Asbestos

Clays

The ionization potential of K would be numerically equal to.

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Electron affinity of Ar

Electromagnetically of K

Electron affinity of K+

ionization energy of Ca

The commonly used catalyst in the manufacture of H2SO4

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Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

On the basic of CFT the bonding between the metal and ligand is totally

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Ionic

Covalent

Coordinate

Metallic

The gases that are responsible for green house effect are.

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CO2 & CH4

CFC

N2O

All above

Among sodium phosphate, sodium sulphate and sodium chloride the solubility in water increases as.

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Chloride > Phosphate > Sulphate

Sulphate > Pohosphate> Chloride

Chloride > Sulphate > Phosphate

Phosphate > Chloride > Sulphate

Hydrogen gas will not redue

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Heated cupric oxide

Headed ferric oxide

Heated stannic oxide

Heated aluminium oxide

Bromine is soluble in

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Alcohol

Water

Chloroform

All above

Excluding H-atom , Hydrogen bond never involves more than atoms.

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One

Two

Three

Four

Which of the following statement is not correct.

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The element with highest IE belongs to group 18

In each period the element with lowest IE belongs to group I

In each period the element with highest IE is a noble gas

In the second period as we move from left to right, ionization energy increases reqularly.

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

"Acids are substance whose aqueous solutions turned blue litmus red and tasted sour" stated by

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Davy

Liebig

Boyle

Rouelle

Which of the following halogen exist in solid state.

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F2

I2

Cl2

Br2

According to Usanovich concept a base is defined as any species.

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Capable of giving up anions

Combining with cations

Neutralizing an acid to give a salt

All of above

NH3 has a not dipole moment while BF3 has zero dipole moment Thsi is because.

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NH3 is not a planar molecule while BF3 is a planar molecule.

NH3 is a planar molecule, while BF3 is a planner molecule.

Fluorine is more electronetative than nitrogen

Born is more electronegative than nitrogen

The ions Sc3+ , Ca2+ and K+ have same electronic configuration as that of.

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Neon

Argon

Krypton

Xenon

In which pair of species, the Lewis formula contain same number of Lone pairs and bond pairs but they are not iso electronci.

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O2 B2

SO2, O3

PCl3, BF3

SOCl2, COCl2

Pick out the ideal conditions needed for the manufacture of H2SO4 by contact process.

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Low temperature high pressure and high concentration of reactants

Low temperature , low concentration of reactants and low pressure

High temperature high pressure and high concentration of reactants

Low temperature, low pressure and high concentration of reactants.

Stainless steel contains

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Fe+Cr+Ni

Fe+Ni+Cu

Fe + Cr+ Cu

Cu + C + Ni

Copper is resistant to

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Air

Water

Acid and Alkali

All of the above

Separation of isotopes of uranium is carried out by

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CaF2

SF6

HF

All above

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