Question # 1

Electrons in degenerate orbitals are placed in separate orbitals with same spin according to

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Hund's rule

Pauli exclusion principle

Aufbau principle

Mosley's law

The proteins which are derived by conjugated proteins are called as

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Simple protein

Complex protein

Derived protein

None

The avtive mass of 64 g of HI in a two litre flask would be

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2

1

5

0.25

Increasing skin cancer and high mutation rate are due to

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Acid rain

Ozone depletion

CO pollution

CO₂Pollution

Electronic configuration of Cu⁺²is

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4S², 3d⁹

4s^-1, 3d¹⁰

4S⁰, 3d⁹

None of these

During oxidation in k₂Cr₂O_{7, Cr VI changes to :}

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I

II

III

IV

Phenol was discovered by:

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Hofmann

Runge

Henderson

Bakelite

[Ti(H₂O)₆]⁺³ion absorbs colour:

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Blue

Yellow

Green

Red

Oceans cove ______ percent of the surface of the earth

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60

70

80

97

Which is liquid among the following alkenes?

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Ethane

Propene

Butene

Pentene

All are ortho & Para directing except

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X

OH

NR₃

NH₂

The pH of 10^-3mole dm^-3of an aqueous solution of H₂SO₄is

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3.0

2.7

2.0

1.5

A single benzene ring can have ______ ortho position maximally

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One

Two

Three

Four

Hemoglobin contains nearly:

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10,000 atoms

100 atoms

1000 atoms

1 atom

How many zones through which the charge passes in a rotary kiln

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4

3

2

5

In aldol condensation reaction, a double bond is formed between ______ and ______ carbon atoms

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αandβ

αandα

αand Y

None of these

Cotton has cellulose in it:

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96%

97%

98%

99%

When chloroform is boiled with NaOH, it gives

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Formic acid

Trihydroxymethane

Acetylene

Sodium formate

In the manufacture of NH₃by Haber's process catalyst used is iron its catalytic efficiency is poisoned by

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Presence of Al₂O₃

Presence of Cr₂O₃

MnO₂

CO present with H₂gas

Atoms and molecules can either gain or lose electrons, forming charge particles called:

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Positrons

Photons

Ions

Electrons

The uncertainty principle was stated only

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De Brogilie

Heinsenberg

Einstein

Schrodinger

Ethyl alcohol prepared during fermentation is pure:

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20%

10%

11%

12%

The chemical formula of Epson salt is

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MgSO₄

MgCl₂

MgSO₄. 7H₂O

MgCl₂. 7H₂O

1.1 mol of A is mixed with 2.2 mol of B and the mixture is kept in on litre flask till the equilibrium is reached. At equilibrium, 0.2 mol of C is formed. If the equilibrium reaction is A+2B 2C+D, the value of equilibrium constant is

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0.002

0.004

0.001

0.003

Pro stand for

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Valine

Alamine

Glycine

Proline

Most common oxidation states shownby cerium are

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+2, +4

+3, +4

+3, +5

+2, +3

Which of the following compounds contains the highest percentage by mass of nitrogen?

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Ammonia, NH₃

Ammonium carbamate, NH₂CO₂NH₄

Ammonium carbonate, (NH₄)₂CO₃

Hydrazine, N₂H₄

Acidification of the soils due to addition of synthetic nitrogen fertilizer, is corrected by using

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Gypsum

Sodium nitrate

Limestone

Potassium nitrate

A species having positive or negative charge is called:

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Electron

Ion

Proton

Atom

Which is not a colligative property?

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Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

Heat absorbed or released during the chemical reaction of physical process at constant pressure is equal to

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