Question # 1

Which of the following is component of the ecosystem.

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Inorganic substances

ORGANIC Substances

Animal and plants only

All above

The phase rule was deduced by

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Gibbs

Thomson

Troution

Henry

Pick out the incorrect statement regarding ozone.

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O3 is an unstbale dark blue diamagnetic gas

The central oxygen in O3 is sp3 hybridized

It cause the tailing of mercury

It does not react with KOH

A trend which is common to elements of both the group IA and group VII A ongoing from top to bottom.

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Boiling point increases

Electron affinity increases

Oxidizing power increases

Ionization energy decrease

The number of optically active compounds in the isomers of C3H5Br3 is.

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1

2

3

4

The number 7.65 is rounded to.

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7.6

7.7

7.5

7.8

iodine is used as

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Tincture of iodine

Iodex and antiseptic

Treatment of goiter

All above

Glass obtained by placing a layer of butyral plastic with a suitable adhesive between two layers of glass and cementing them by heat and pressure is called.

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Glass wool

Safety glass

Optical glass

Jena glass

Which of the following statement is not true in case of catalytic reforming.

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High temperature results in loss of reformate yield

High naphthenic stock require high space velocity

Presence of water decrease the hydrocracking activity.

None of above

The greater stability of bonzyl carbonium ion as compared to t-butyl carbonium ion is due to.

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Inductive effect

Resonance effect

Electrometric effect

All above

Aluminum occurs in nature as.

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Native

Combined form

Both native and combined

Free

The experimental relationship between rate of the reaction and concentration of the reactants is called.

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Rate law

Law of mass action

Le-Chatelier's principle

Rate constant

Which type of polymer the Nylon -06 is

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Polyamide

Polyester

Addition

Homopolymer

In 1952 who popularized the use of CFT for inorganic chemist

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Bethe

Orge

Van Vleck

Werner

Valences bond theory was put forward by

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Pauling and Slatter

Heitler and London

Lewis

Pauli

Both the elements shows allotropy

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B & Ai

B & Si

Al & Si

Any of above

Biogical role of nucleic acid doe snot include

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Genetic continuity

Protein syathesis

Hybridization

Mutation

Which of the following statements is not true with respect to atomic spectroscopy.

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Atoms are simplest form of matter

Atoms cannot rotate or vibrate as molecules do

Only electronic transitions within atoms take place

Band spectra are observed

CFT was originally applied to.

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Ionic crystal

Liquid crystal

Solid crystal

All above

Solid sodium chloride does not conduct electricity be cause.

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In solid NaCl, no ions are present

Solid NaCl is covalent in nature

In solid NaCl, there is no mobility of ions

In solid NaCl, there are no electrons.

What corrosion occurs under organic coating on metals as fine wavy hairlines?

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Stray current corrosion

Microbiological corrosion

Filiform corrosion

Simple corrosion

Which of the following elements has the highest value of IE.

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Na

K

Mg

Ca

The size of iso electronic species - F- , Ne, and Na+ is affected by

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Nuclear charge (Z)

Valence principal quantum number (n)

Electron electron interaction in the outer orbital

None of the factors because their size to the same.

Combination of a -amino acid through which linkages results result in formation of protein

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Ester linkage

Glycosidic linkage

Lactum linkage

Peptide linkage

The relative populations of gourd state and excited state populations at a given flame temperature can be estimated using.

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Boltzmann distribution law

Maxwell law

Lambertie law

Beer's law

Which treatment is done with pulp before delivering it to paper making machine.

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Pulp is disperse din water to make slurry

Mechanical refining or heating of the fibers

Addition of chemical additives and recycled fibres from the waste paper plant

All above

When steam is passed over red bot coke The product formed is

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Hydrogen and carbon dioxide

Mixture of hydrogen and carbon monoxide

Mixture of hydrogen and oxygen

Heavy hydrogen

Alkaline hydrolysis of chloroform produces.

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HCCO

HCOO - + CO

H3COH

CHCL2 OH

Which of the following statement is not correct with reference to cell constant.

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The dimensions of cell constant is cm-1

It is used to determine the specific conductance

It is measured with KCl solution

Specific conductance does not vary with concentration.

A catalyst increases the rate of a reaction because.

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It provides the necessary energy to the colliding molecules to cross energy barrier

It decreases the heat of the reaction

It decreases the order of the reaction

It provides a different path of lower activation energy.

The diameter of hydrogen atom is.______________nm

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10

1

0.1

0.01

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