Question # 1

Atomic volume of C, N, O and F are in the order

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C > N > F > O

C > N > O > F

F > O > N >C

N > C > O >F

The law of trinds was proposed by

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Dobereiner

Newlands

Lother Mayer

Chancourtois

Which of the following state is not true with respect to copper.

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it is malleable and ductile

It is a best conductor of heat and electricity

It forms alloys easily

Moltan copper absorbed carbon dioxide

Pick out the incorrect statement.

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Red phosphorus consists of a complied chain structure and black phosphorus has a layer structure.

Nitrogen shows a little tendency for catenation, because N-N a single bond is very strong.

The xamimum number of covalent bonds formed by nitrogen is four, since it has no d-orbitals in its valence shell

The group 15 elements do not form M5+ ions, but +5 oxidatin state is realized only through covalent bonding.

The types of coordinate compounds.

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Labila

Inert

Both A and B

None of above

Lithium shows diagonal relationship with

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Beryllium

Sodium

Magnesium

Calcium

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

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Tempering

Annealing

Quenching

Hardening

LiAIH4 is most useful reducing agent It reduce to alcohol

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Aldehydes

Ketone

Carboxylic acid

Any of above

Which of the following carbonates decomposes at the highest temperature.

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Mg CO3

CaCO3

Sr CO3

Ba CO3

The correct order of ionic radii for the following ions is.

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S²- < P^3- < Cl- < K+

Cl- > S2+ > P3- > k+

K+ > Cr > S2+ > P3-

P3+ > S2 > Cl - > K+

Which of the following represents the correct order of ionic radii

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La+ < Na+ < K+ < Rb+

Li+ > Na + > K+ >Rb+

Li = Na + = K+ = Rb+

Rb +> Na+> K+ > Li+

A combination of atomic orbitals produces a large number of closely special energy states brown as.

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Packet of energy

Band of energy

Botha a and b

None of the above

Which of the following is most soluble in water

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CaSO4

Sr SO4

MgSO4

BaSO4

Aluminum is usually extracted from

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Bauxite

Corundum

Feldepar

Alumite

The type of bonding in HCl is

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Pure covalent

Polar covalent

Highly polar

Hydrogen bonding

Hybridization involves.

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Orbitals of same atom with slightly different energies.

Orbitals of different atoms, but with equal energies.

Orbitals of the same atom but with widely different energies.

Orbitals of different atoms with different energies.

Among the elements A,B,C and D having atomic numbers 9,10,11, and 12 respectively, the correct order of ionization energies is.

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A > B > C >D

B > A > D > C

B > A > C > D

D > C > B > A

The structure of SO2

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Linear

Angular

V-shaped

Planner

The carbonate of which of the following will have highest lattice energy.

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Barium

Magnesium

Calcium

Strontium

Which show maximum number of oxidation states in 3d series.

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Mn

Ni

Co

Zn

The penultimate shells have pscudo inert gas type configuration.

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Ga

In

TI

All above

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