Question # 1

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Increase 2 times

Decrease to half

Increase 4 times

Decrease 4 times

The elements in the periodic table with atomic number 30is expected to be present in:

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IA

IIB

IIA

IB

If K_spvalue is large, the salt in water is:

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More soluble

Less soluble

Moderately soluble

No Concentration

The pair of atomic number that represents elements which are both s-block elements is:

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3, 2

7, 15

6, 12

9, 17

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0.004

0.080

0.016

0.160

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Positive

Negative

Zero

Cannot be predicted

The most acidic oxide among the following is:

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CI₂O₇

Na₂O

AI₂O₃

P₄O₁₀

The sum of pH and P^OHis

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2

7

14

11

How does the ionization energy of 1st group elements vary?

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Increases down the group

Decreases down the group

Remains unchanged

Variation is not regular

The element with highest electron affinity among the halogen is

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F

CI

Br

I

Which of the following alkali metals does not exist naturally

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Francium

Rubidium

Lithium

Cesium

point out the correct statement:

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covalent character of metal halides increase from left to right in a period

boiling points of group IVS hydrides decrease down the group

ionic character of group IIA oxides decreases on descending the group

the basicity of group IIA oxides decreases on descending the group

In the formation of Hl the change of pressure result

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Shift toward forward direction

Shift toward backward direction

Equilibrium will not be effected

First shift forward then backward

Who introduced the term pH

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Henderson

Sorenson

Thomson

Goldstein

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0.61

0.57

0.83

0.46

Which of the following is least soluble in water

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AgCl

AgBr

Agl

CH₃COOAg

Which among the following elements have lowest value of IE₁?

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Pb

Sn

Si

C

Mark the element having greatest value of electronegativity on combination with hydrogen:

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chlorine

sodium

silicon

sulphur

Which of the following elements is most metallic

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P

Sb

As

Bi

The element with atomic number 26 will be found in group

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2

8

6

10

In order to classify the elements, Newland gave the idea of:

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atomic mass

atomic volume

triads

octaves

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