Question # 1

Which of the following is the correct order of interactions.

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Covalent < hydrogen bonding < Van Der Waal's < dipole -dipole

Van der Waal's < hydrogen bonding < dipole -dipole < covalent

Van der Waal's < dipole -dipole < hydrogen bonding < covalent

Dipole-dipole < Van der Waal's < hydrogen bonding < covalent

The ionization potential of K would be numerically equal to.

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Electron affinity of Ar

Electromagnetically of K

Electron affinity of K+

ionization energy of Ca

Which of the following would decompose at lowest temperature.

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MgCO3

SrCO3

BaCO3

CaCO3

The correct order of second ionization potential of carbon , nitrogen, oxygen and fluorine is.

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C > N > O > F

O > N > F > C

O > F > N > C

F > O > N > C

The three isotopes of hydrogen differ from one another in

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Atomic number

Number of protons

Nuclear charge

Nuclear mass

If the absorbed light is green the transmitted light will be

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Purple

Orange

Violet

Black

The principal ores of copper are

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Copper sulphides

Copper oxides

Both sulphides and oxides

Copper carbonate

Principal constituents of noble gases is

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Argon

Neon

Xenon

Helium

Inter halogens are of types.

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3

4

5

6

The variable valency is generally observed in case of.

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Transition elements

Inert gases

Normal elements

Non- metallic elements

The first noble gas compound was

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XeO3

XeF4

XeF6

Xe +[PtF6]

Is a peroxy acid

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H2SO5

H2S2O6

H2SO4

H2S2O7

What types of bonding occurs in d-block elements.

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Ionic

Covalent

Metallic

Both B and C

The acetylene molecule contain a

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Single bond

Double bond

Triple bond

Co ordinate bond

Nitric acid is used in the manufacturing of.

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Dyes

Drugs

Artificial silk

All above

The process of heating to redness and then slow cooling in known as

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Tempering

Annealing

Quenching

Hardening

Bases and reducing agents are electron giving agents and also called as.

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Electrodotic

Electrophile

Nucleophile

None of above

Consider to violet colored compund.[Cr(OH)2)6 Cl3 and the yellow compound. [Cr(NH3)6]C;2 which of the following statements is false.

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Both chromium metal ions are paramagnetic with 3 unpaired electrons.

[Cr(NH3)6)3+ is calculated directly form the energy of yellow light

For [Cr(OH)2)6]3+ is less than for [Cr(NH3)6]3+

The two complexes absorb their complementary colors.

The bromine produced on commercial scale may contain impurities of.

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Water

Chloride

iodine

All above

Which of the following configuration of an ionic species represents psedue noble gas configuration.

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ns2

ns2 np6

ns2 np6 nd 10

ns2 np3

The ionization energy of N is more than that of oxygen becasue.

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Nitrogen has half filled p orbitals

Nitrogen atom is smaller in size than oxygen atom

Nitrogen contains less number of electrons

Nitrogen is less electronegative

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