Question # 1

All naturally occurring processes spontaneously in a direction leads to.

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Decrease of entropy

Increase of entropy

Decrease in free energy

Increase in free energy

The nutrients which are required in very small amount for the normal growth of plants are called.

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Nitrogenous fertilizers

Micronutrients

Phosphorus fertilizer

All of the above

Which of the following statement is not related with industrial ecology.

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Study of interactions between human activities and its environment

Industrial ecology seeks to optimize the total industrial materials cycle from virgin material to finished product

Industrial impacts on the environment

Economic system are viewed in isolating from their surrounding

A red color gas, on condensing ti gives a dark blue liquid.

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NO

N2O

N2O3

N2O4

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

Red brass contain about how many percent of zinc.

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20 %

15 %

30 %

25 %

Which of the following is not an adsorption indicator.

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Eosin

Bromocrsol green

Fluorescein

Phenolphthalein

D(+) glyceraldebydes has the absolute configurtion.

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E-

S-

E-

Z-

Used in TV sets and sound movies to give ready response to electrical potential

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He

Ne

Ar

Kr

Ground state electronic configuration of valence shell in N2 m lecule is written as (a2s)2, (o*2s)2 , (pi sp)4, (o2p)2, Hence, the bond order of N2 molecule is.

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1

2

3

0

LPG is use this

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Vehicles

Aviation Fuel

Home

All above

The Langmuir theory of unimolecular adsorption is generally valid at.

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Low pressures and low temperature

Low pressures and high temperature

High pressures and low temperature

High pressure and high temperature

A thionic acid

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H2S2O3

H2S2O6

H2S2O8

H2S2O7

The addition of HCl in the presence of poroxule does not follow anti Markovnikov's rule because.

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HCl bond is too strong to be broken homolytically

Cl atom is not reative enough to add on to a double bond

Cl combines with H to give back HCl

HCl is a reducing agent.

Which of the following statement is not true with respect to the role of matter undergoing decomposition.

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Decomposed matter increase soil fertility

They provide a texture which is favorable for plant growth

Organic compounds for complexes with mineral nutrients which enhance uptake by plants.

In high concentration the decomposition product may increase the photosynthesis

Which of the following is not strong electrolytes.

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HCl

H2SO4

HNO3

CH3COOH

Which of the following does not belong in the group of herocyclic dyes.

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Acridine

Cyanine

Methylene blue

Amido black

Molecule is a diatomic

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Nitrogen

Phosphorous

Arsenic

Antimony

If diesel has cetane number of 50 then the diesel index will be.

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36

46

56

66

Which of the following item is not symmetry element.

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Pllane of symmetry

Inversion centre

Improper rotation

Optical activity

Which of the following statement is not related to MOT

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Atomic orbitals lose their identities

MOTgives as idea of denationalization

MOT uses all the orbitals and elections

It treated bond as purely covalent

Magnesium burns in air to give.

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MgO

MgCO3

Mg3N2

Both A and C

Which of the following elements with excess oxygen to form proxides.

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Ca

Mg

Li

Ba

The physical methods of nano roads syntheses involves.

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Top down approach

Bottom up approach

Left right approach

Right left approach

The formula of Tetraboric acid is.

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H2BO3

HBO2

H2B4O7

H6B4O9

RNA is involved int eh synthesis of

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Protein

Nucleic acid

Carbohydrates

Fats

Hot isostatic pressing is not a viable option if the chief criterion is

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Strength without gram growth

Lost cost

Zero porosity

Make it hard

Alkaline hydrolysis of chloroform produces.

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HCCO

HCOO - + CO

H3COH

CHCL2 OH

Copper is mainly extracted from witch of the following ore

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Sulphide ores

Carbonate ores

Oxides ores

Non sulphide ores

The noble gas used or treatment of cancer is

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Helium

Argon

Radon

Krypton

Equivalent conductance is expressed in the units.

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S cm-1 eq -1

S cm eq-1

S cm2 eq-1

S cm2 eq

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