Question # 1

Which of the following has highest M.P

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Aluminium

Silicon

Phosphorus

Sulphur

Which the correct statement

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Cl^-is smaller than Cl atom

Cl^-(Ion) and Cl (atom) are equal in size

Na⁺is smaller than Na atom

Na⁺is larger than Na atom

The first ionization energy of Na, Mg, Al and Si are in theorder of.

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Na < Mg < Al < Si

Na > Mg> Al> Si

Na > Mg< Al< Si

Na< Mg> Al< Si

Across a period from left to right in the periodic table, the melting and boiling point.

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Decrease

Increase

Remain constant

First increase upto the middle of period and then decrease

Keeping in view size of atoms ,which order is the correct one.

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > I

In which compound, oxidation state of sulphur is +6

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H2S

H2SO4

H2SO3

SO3

Number of elements in the first period of the periodic table is

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2

8

14

18

Fluorine is in group VII A of periodic table. Its chemistry will most closely resembles that of.

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Argon

Boron

Iodine

Sulphur

Elements of Groups IIA are called

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Alkali metals

Alkaline earth metals

Coinage metals

Halogens

What criteria did Mendeleev use in arranging his periodic table.

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Atomic mass

Atomic number

Mass number

Density

Which one of the following sets has coinage metaals is it.

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Cu, Hg, Au

Cu, Ag, Au

Ag, Au, Hg

Cu, Fe, Au

The oxides of metal sare generally

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Acidic

Basic

Neutral

Amphoteric

In modern periodic table VI period contains elements

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8

18

10

32

Electron affinity is measure of energy

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Required to remover the electron

Released by adding an electron

Required to excite an electron

Released by removing an electron

In a period, from left to right in the periodic table, the size of atom generally.

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Increases

decreases

Remains constant

First increase upto the middle of period and then decreases

Which one of the following oxides is amphoteric in nature.

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MgO

Na2O

SO2

ZnO

Which oxide is more basic in nature.

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Beo

MgO

CaO

BaO

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