Question # 1

The electrolytic method super passes all other methods due to.

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Furity

Cheapness

Easy available

All above

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

A molecule the cannot be susperimposed on its mirror image is said to exhibit which of the following.

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Geometrical isomerism

Optical isomerism

Linkage isomerism

Reactive isomerism

The interactions in HF are.

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dipole dipole interasctions

Hydrogen bonds

dipole -dipole and dispersion forces

Hydrogen bond and diapersin forces

Valences bond theory was put forward by

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Pauling and Slatter

Heitler and London

Lewis

Pauli

Which compound among the following does not contain an ionic bond.

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NaOH

HCl

KaS

LiH

HCIO2 gives the structure of a.

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Linear

Angular

trigonal pyramidal

Tetra hddral

Four elements A, B,C,D have atomic numbers Z , 1 ,Z, Z +1 and Z +2 Respectively If Z is 9, then bond between which pair of elements will be ionic.

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A and C

D and C

D and B

B and C

Monel metal is a alloy of Ni which constrains Ni uptown

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50%

60%

70%

80%

The role of the mineral cryolite Na2AlF6 in the Hall process for aluminum production is.

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It is the source of aluminum

it is a chemical reducing agent

It forms a slag to remove impuriteis

In the molten state, it is a solvent for alumina Al2O3

Law of octaves was proposed by

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Lother meyer

D.I.Mendeleev

J.A.R. Newlands

J.W. Dobereiner

Metallic bond is treated essentially as in character

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Ionic

Covalent

Polar

Non polar

Aluminum is usually extracted from

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Bauxite

Corundum

Feldepar

Alumite

The magnitude of electron affinity depends on.

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Atomic size

Nuclear charge

Electronic configuration

All of the above

Cryolite is used in the electrolytic extraction of aluminium to.

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Obtain more aluminium

Reduce alumina

Protective electrodes

Dissolve bauxite and increase the electrical conductivity

The geometry of the molecule is primarily decided by

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Bond pairs around the central atom

No of k bond around the central atom

No of bond pairs as well as lone pairs around the central atom

No. of lone pairs on central atom

The formula of sulphur sesquioxide

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SO4

S2O7

S2O3

SO3

Aluminium reacts with boiling water to liberatedi hydrogen gas along with the formation of.

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Aluminium oxide

Aluminium hydroxide

Aluminium suboxide

Aluminium superoxide

Acid rain effects

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Human being

Crops

Aquatic life

All above

The formula of copper pyrite is.

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CuFeS

CuFeS2

Cu2FEs

Cu Fe2S

The concept is also known as proton donor acceptor system.

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Bronsted Lowery

Lewis

Lux Flood

Usanovich

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