Question # 1

Which name is associated with the rules which help in predicting the portability of anion.

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Soddy

Slater

Fajan

Linus pauling

The boiling point of water is unexpectedly high because.

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H2O molecule in linear

Sp3 hydrogen bonding is involved in the formation of water

There is hydrogen bonding and consequent association of H2O molecules.

Oxygen is the first member of the VI group

in monel metal copper is alloyed wiht which metal.

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Fe

Mn

Ni

All

The pH of the tears is

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7.0

7.4

7.8

8.2

Which of the following metals is the most abundant in the earth's crust.

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Mg

Ca

K

Na

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

Titanium dioxide shows the lattice strcuture.

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Flluorite

Rutile

Wurtzite

Zeolite

The compound insoluble in acetic acid is.

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Calcium oxide

Calcium carbonate

Calcium oxalate

Calcium hydroxide

The hybridization of S in SO2 is.

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sp

sp2

sp3

dsp2

[Ti(OH2)6]3+ gives colour

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Green

Red

Purple

Blue

Group IV A consist of elements

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3

4

5

6

Al Cl3 is used in

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Manufacturing of petrol

In borax bead test

Prezervation of food

All above

The bond order for BO molecule is.

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2.5

3.0

2.0

3.5

After assimilation urea leaves behind in the soil

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NH3

CO2

Both A and B

None of above

Which of the following has the maximum ionic character.

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HF

HCl

HI

HBr

The total number of bond pairs around sulphur and total number of lone pairs around oxygen atoms in the Lewis structure of sulphate ion are respectively.

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4, 12

8,12

12,4

6 ,12

The process in which ore is heated generally in the presence of air, at temperature below their melting points is called.

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Calcination

Roasting

Fourth floatation

besemerization

Which of the following is not an ore of iron.

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Haematite

Magnetite

Siderite

Monazite

Which of the following steps are involved in the extraction of copper.

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Roasting

Smelting

Refining

All

Which are not considered member of d-block elements.

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Zn

Cd

Hg

All above

Which of the following is the strongest oxidant.

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F2

Cl2

br2

I2

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