Question # 1

Which of the following statement is not true regarding Open Hearth process.

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No iron is lost

The process is economical and simple

Steel obtained is of high quality

Scrap iron cannot be used in this process.

pH of pure water at 25 ^oC. kw = 1 x 10^-4

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0

7

14

None of above

The element having highest ionization energy and least electron affinity belong to

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Period 1 , group 18

Period 2, group 17

Period 2, group 1

Period 2, group 2

Elements in the same vertical group of the periodical have same

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Number of electron

Atomic number

Number of valence elections

Electronic configuration

An sp3 hybrid orbital contains

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1/4 a character

1/2 a character

2/3 a character

3/4 a character

In 1952 who popularized the use of CFT for inorganic chemist

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Bethe

Orge

Van Vleck

Werner

The solution of NaOH pH -10.46 contain [OH-]

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2.0 X. 10^-4

4.6 X 10^-4

4.6 X 10^-2

4.6 X 10^-3

Among the elements A,B,C and D having atomic numbers 9,10,11, and 12 respectively, the correct order of ionization energies is.

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A > B > C >D

B > A > D > C

B > A > C > D

D > C > B > A

Which one of the following statements if false with respect to CFT.

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In an octahederal crystal field. the d electron on a metal ion occupy the ex of orbitals before they occupy the t98 not of orbitals.

Diamagnetic metal ions cannot have an odd number of electrons

Low spin complexes can be paramagnetic

Low spin complexes contain strong field ligands.

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

The common oxidation state of elements of group V A is.

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-3

+3

+5

Any above

The number used in cancer therapy is.

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Fe

Co

Ni

Rn

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

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Ionic

Covalent

Coordinate

Metallic

Borax exist in the form

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Ordinary borax

Octahdral borax

Borax glass

All above

Diamond and carbon are the _________ forms of carbon

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Isotropic

amorphous

Allotropic

Isomeric

Which of the following compounds is must acdic.

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H2O

H2S

H2Se

H2Te

Which of the group 13 element does not form M (III) idodie.

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Al

Ga

Ti

In

Which show maximum number of oxidation states in 3d series.

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Mn

Ni

Co

Zn

The hybridization of S in SO2 is.

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sp

sp2

sp3

dsp2

Which element are non metals.

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N & P

Sb & Bi

As & Sb

N & Bi

Which one of the following is not correct.

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Ar is used in electric bulbs

Kr is obtained during radioactive decay

Boiling point of H2 is lowest among all noble gases.

Xe forms Xe OF4

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