Question # 1

The energy gap between tag and eg sets in denoted by

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A-

10 Dq

Both A and B

None of above

The carbonate of which of the following will have highest lattice energy.

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Barium

Magnesium

Calcium

Strontium

According to CFT the metal ligand bond is considered to be ionic to presentage.

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100%

90%

50%

70%

Is an instate able colourles gas with a sticky sweet odor and is extremely toxic.

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B2 H6

B4 H10

B3 H9

B6 H10

Which of the following compounds combines with hemoglobin.

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CO2

CO

NO

N2

The formula of Bauxite is.

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Al2O3

Al2 O3. 2H2O

AL2O3, H2O

Na3AIF6

The noble gas which was discovered first in the sun and then on the earth is.

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Helium

Neon

Argon

Xenon

Among the elements of third period, the element with lowest boiling point belongs to group.

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1

14

16

18

Sodium react more vigorously than lithium because.

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It is a metal

It has higher atomic mass

It is more electronegative

It is more electropositive

In their ionic compounds halogens exhinit the oxidation states of.

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-1

-2

-3

-4

Among group IA elements, melting point

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Increases down the group

Decreases down the group

Do not show any regular trend

Remains constant

Commercial or the phosphoric acid is pure.

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37.0%

82.98%

88.25%

90.12%

Which of the following pentahalides is not formed.

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NF5

PF5

AsF5

BiF5

In average composition of a good sample of cement the percentage of silica is.

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18.5%

20.5%

22.5%

24.5%

The noble gases are found in the atmosphere to the extent of about some percent by volume.

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0.5%

1.0%

1.5%

2.0%

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

Type of hybrid orbitals used by the chlroine atom in CIO2 is.

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sp2

sp3

sp

None of these

All the member of group III A are metals except.

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B

Ai

Ga

In

Has the highest value of electronegativity

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F

Cl

Br

I

The silicate chains are present in

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Silica

asbestos

Beryl

Clays

The geometry of Xe F2 is

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Triangular planar

Square planar

Linear

Trigonal bipyramidal

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