Question # 1

Major principle underlying the sustainability of natural ecosystems is that they run on.

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Electric energy

Solar energy

Wind energy

None of the above

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

What is prefix in steel identification means it is made in an electric furnaced.

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E

H

B

Z

In vinyl cyanide, the number of a bonds in

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2

3

1

4

An example of cyclic polyterpenoid is

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Myrcene

Alcoholic

Synthetic rubber

Natural rubber

The nitrogen present in some fertilizers helps plants.

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To fight against diseases

To undergo photosynthesis

To produce protein

Iodine is a grey black solid and its vapours are in color

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Grey

Black

Yellow

Violet

Which of the following is not a component of a gas chromatography system.

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Carrier gas

Capillary column

Packed column

Cathode lamp

Which of the following effects best explains that o-nitro phenol is insoluble in water.

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Inductive effect

Resonance effect

Intramolecular H -bonding

Isomeric effect

2- Butanol is optically active because a contains

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An asymmetric carbon atom

A plane of symmetry

Centre of symmetry

A hydroxyl group

All the strong acids have very close pKas value and they appear to have nearly equal strengths in aqueous solutions. The phenomenon is called as.

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Levelling effect

Differnetiating effect

Levelling solvent

Differnetiating solvent

Which of the following carbides reacts with H2O to form propane.

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Al4C3

CaC2

SiC2

Sic

The action of all the relations of all the organism to their environment is called

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Biology

Botany

Ecology

Archiology

Principal constituents of noble gases is

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Argon

Neon

Xenon

Helium

The dimensions for first order rate constant are.

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s-1

s mol-1

mol-1 s-1

s

Which one of following is non polar

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CH2Cl2

CCl4

CHCl3

CH3Cl

How many stereoisomers are possible for CH3CH = CHCHCH(Br) CH3

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2- geometrical isomers

2- optical isomers

2- geometricla nad 2- optical isomers

2- geometrical and 1 optical isomers

Which of the following process is involved in getting back nitrogen into atomosphere.

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Nitrification

Denitricication

Ammonification

All above

On hybridization of one s and one p orbitals we get.

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Two mutualy perpendicular orbitals

Two orbitals at 180^o

Four orbitals directed tetrahedrally

Three orbitals in a plane

Which of the elements of group II A has the highest value of IE.

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Mg

Be

Ca

Sr

Which group contains elements that exist as monoatomic molecules.

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1

2

14

18

Who coined the word nanotechnology.

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Eric Drexler

Richard Feynamann

Sumio tijma

Richard smalley

Which of the following statement is no true with respect to nitrogen dioxide.

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It is produced by the oxidation of NO

Its small concentration has been detected to lower stratosphere

It is major pollutant

It does not absorb sunlight.

The specific gravity of H2SO4 is

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1.37

1.84

1.17

1.57

What ASTM test for compression is designated for plastics.

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D 638

D 695

D 790

D 732

A covalent bond which is formed between two atoms by the overlap of atomic orbitals along their axis is called.

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Pi bond

Sigma bond

Polar bond

Non polar bond

Which of the following bonds will be non polar.

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N - H

O - H

C - H

C l - Cl

Which of the following sets of quantum number is possible for an electron in a 4f orbital.

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n = 4,l = 3, m = 4, s = +1/2

n = 4, l= 4, m = +4 , s = +1/2

n = 4, l = 3, m = +1, s = -1/2

n = 4, l = 4, m = +1 , s = -1/2

Phosphoric acid is the most important of the phosphorus oxy acids. Industrially phosphoric acid is prepared by.

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The Ostwald process

The Haber's process

The reaction of phosphate rock with sulphuric acid

The reaction P4O10 with water.

At extremely low pressures, the van der Waals equations for one mole may be written as.

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PV = RT + Pb

PV = RT

PV = RT - a/V

(P +a) (V-b) = RT

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