Question # 1

Which librates H2 with NaOH

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B

AI

Zn

All

Which of the following iso electronic spices has the highest IE.

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Ne

Na+

F

O2-

Consider the coordination compound Na2[Pt(CN)4] the Lewis and is

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[Pr(CN)4]2

Na+

Pt

Pt2+

A combination of atomic orbitals produces a large number of closely special energy states brown as.

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Packet of energy

Band of energy

Botha a and b

None of the above

Select the correct IUPAC nae for [Co(NH3)6 ]2+

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Hexammoniacobaltate (II) ion

Hexaamminecobaltate (II) ion

Hexammoniacobalt (II) ion

Hexaamminecobalt (II) ion

Which of the following halide has lowest melting point.

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NaCl

NaF

NaBr

NaI

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

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Davy

Liebig

Boyle

Rouelle

Lithium shows diagonal relationship with

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Beryllium

Sodium

Magnesium

Calcium

Used for sterilizationof drinking water

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F

Br

Cl

I

Al2Cl6 is an example of

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Ionic bond

Covalent bond

Co ordinate bond

Metallic bond

Blue color of glass of due to the presence of .

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Cobalt (II)

Chromium (III)

Iron (III)

copper (II)

Which of the following is not an ore of Cr.

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Chrome iron

Nicollite

Crocisite

Chrome ochre

The rising world temperature will have serious effect on.

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Agriculture

Animal production

Human being

All above

Which of the following represent the fuming sulphuric acid

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H2S2O4

H2S2O3

H2S2O6

H2S2O7

Ferrochrum contains Cr up to

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60-70%

70-80%

80-90%

40-50%

Explosive trioxide XeO3 is produced when

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XeOF4 reacts with water

XeOF4 reacts with silica

XeF4 reacts with water

Any of above statements

Are used as water repellents

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Carbides

Silicon

Silicones

Silicates

Oxidation state of the chromium [Cr(NH3)6]3+ complex ion is

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+2

+3

+4

+5

Hybridization involves.

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Orbitals of same atom with slightly different energies.

Orbitals of different atoms, but with equal energies.

Orbitals of the same atom but with widely different energies.

Orbitals of different atoms with different energies.

Consider the coordination compound K2[Cu(CN)4] A coordinate covalent bond exists between

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K+ and CN-

Cu2+ and CN-

K_ and [Cu(CN)4]2+

C and N in Cn

The variable valency is generally observed in case of.

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Transition elements

Inert gases

Normal elements

Non- metallic elements

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