Question # 1

They hydrolysis of methly acetate is a reaction of.

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First order

Second order

Third oirder

Fourth order

Which of the following statement is not true regarding Open Hearth process.

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No iron is lost

The process is economical and simple

Steel obtained is of high quality

Scrap iron cannot be used in this process.

The noble gases are found in the atmosphere to the extent of about some percent by volume.

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0.5%

1.0%

1.5%

2.0%

Aluminum occurs in nature as.

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Native

Combined form

Both native and combined

Free

The bonding of transition metal complex was not well understand until the pioneer work of.

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Ps JAISWAL

GS MANKU

BR thukral

Alfred Weriner

The principal ores of copper are

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Copper sulphides

Copper oxides

Both sulphides and oxides

Copper carbonate

Each fat or oil in made up of

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A distinctive mixture of several different triglycorides

A distinctive mixture of several aldehydes

Mixture of above both

None of above

Among oxides of nitrogen all are gases except.

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N2O5

N2O

NO

N2O3

Which of the following is not a ligand or complexing agent.

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NH3

CH3COOH

EDTA

CN-

The electrode Pt/Fe2+ (C1) Fe 3+ (C2) belong to the type.

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Gas electrodes

Inert metal electrodes

Magam electrodes

Metal metal insoluble salt electrode

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

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.

Ozone layer of stratosphere requires protection from indiscriminate use of.

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Weather ballons

According to Usanovich concept a base is defined as any species.

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Capable of giving up anions

Combining with cations

Neutralizing an acid to give a salt

All of above

Ozone is stratosphere is depleted by

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CF2Cl2

C7F16

C6H6Cl6

C6F6

Which of the following cast irons is a high carbon silicon alloy.

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Gray iron

White iron

Malleable iron

Alloy iron

Aluminothermy used for on the spot welding of large iron structures is based upon the fact that.

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As compared to iron, aluminium has greatest affinity for oxygen.

As compared to aluminium, iron has greater affinity for oxygen

Reaction between aluminim and oxygen endothermic

Reaction between iron and oxygen is endothermic

A group that causes deepning of the colour is known as

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Bathchromic

Hypsochromic

Hypochromic

Hyperchromic

Which of the following statements is not related to the decomposition phenomenon occurring in nature.

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Decomposition is due to autotrophic organisms

Decomposition involves bacteria and fungi

During decomposition organisms carry out specific reactions

Many species of decomposer are present in the biosphere

Granulated sugar also known as.

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Brown sugar

Refined sugar

White sugar

None of these

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

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Mg

Na

Ca

Sr

______ is used for Annealing

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Klin

Batch

Converter

Oven

Ozone layer of upper atmosphere is being destroyed by

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chlorofluorocarbons

SO2

Photochemical oxidants O2 and CO2

Smog

Which of the following technique is useful to remove metal ions from an interfering matrix.

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Solvent extraction

Electrophorests

Cataphorests

Gel permeation

The pH Value 4.2 is of

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Vinegar

Lemons

Oranges

Tomatoes

Which of the following statement is not related with the advantages of TLC.

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A variety of adsorbents can be used

The thickness of adsorbent can be varied

Fluorescence can be introduced

Different detectors can be used

Commercial detergents contain mainly ___________

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RCOON

RONa

RSNa

All above

BCl3 is an example of hybridization

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sp

sp2

sp3

None of above

Which of the following metals is the most abundant in the earth's crust.

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Mg

Ca

K

Na

The ions Sc3+ , Ca2+ and K+ have same electronic configuration as that of.

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Neon

Argon

Krypton

Xenon

According to systematic nomenclature which hydrogen compound is sulphane.

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HF

Si H4

SF4

H2S

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