Question # 1

Select a basic amino acid.

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Glycine

Cystine

Alanine

Lysine

The state of hybridization of carbon in CO2 is

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sp2

sp

sp3

dsp2

The process of removing disolved impurities from a colloidal system, by means of diffusion through a suitable membrane under the influence of an electric field , is called.

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Electrosmosis

Electrodialysis

Electrophoresis

Peptization

Among sodium phosphate, sodium sulphate and sodium chloride the solubility in water increases as.

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Chloride > Phosphate > Sulphate

Sulphate > Pohosphate> Chloride

Chloride > Sulphate > Phosphate

Phosphate > Chloride > Sulphate

Which of the following cells is used to produce electricity from chemical reaction

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Electroytic cell

Galvanic cell

Voltaic cell

Fuel cell

Both C and D

In the extraction of iron, the furnace change consists of iron ore, coke and limestone. The function of limestone is to act as.

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An oxidizing agent

A reducing agent

Flux

Slag

Which of the following process is used for the removal of gases.

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Precipitation

Chemical reaction in the atmosphere

Absorption

All above

Which of the following reacts with excess oxygen to form a normal oxide.

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Li

Na

K

Rb

Which of the following statements not correct with the concept of Bronsted concept of acids and bases.

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An acid can donate a proton

A base can accept a proton

This concept has many bases that have OH- ions

This concept is more general

Which element out of the following can ehibit a maximum con valency of seven.

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Chlorine

Sulphur

Fluorine

both Cl and F

How pig iron is usually obtained from

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iron pyrite

Limonite

Hematite

Siderite

a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.

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Citral

Myrcene

Linalool

Limonene

Soft drinks and baby feeding bottles are generally made up

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Polyeater

Polyurethens

Polyamide

Polyetyrene

The angle of rotation in a polarimeter depends on.

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Nature of the compound

Nature of the solvent

Wavelength of the light used

All above factors.

Pauling has suggested that the calculate of energy can be improved by considering.

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Screening effect

Polarization effect

Both A and B

None of abvoe

Nano technology in other words is.

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Carbon engineering

Atomic engineering

Small technology

Microphysics

Oxygen and sulphur exist in state

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Free

Combined

_{Both free & combined}

None of above

Which of the following solution has highest normality.

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1 N H2PO4

0.5 N H2SO4

6 g NaOH per 100 cm3

4 g NaOH PER 1000 cm3

The commonly used catalyst in the manufacture of H2SO4

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Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

The half life for a first order reactions 32 s, What was the original concertation if after 2.0 minutes, the reactant concentration is 0.062 M.

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0.84 M

0.069 M

0.091 M

0.075 M

Which of the following statements is incorrect.

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The elements of group 18 are known as aerogens.

Group 2 elements are all metals

Metallic character increase on going down a group

All the elements belonging to a particular period have same valence shell configuration.

A theoretical link between quantum mechanics and thermodynamic is.

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Electrochemistry

Kinetic theory of gases

Spectroscopic analysis

Statistical thermodynamics

The one in which the acceptor atom is of low positive charge, Large size and has several outer electrons which can be easily excited is a.

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Soft base

Hard Base

Soft acid

Hard acid

The use of acids to remove oxides and acids on hot worked steels is known as

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Tempering

Picking

Machining

Sizing

In Glass of vitreous state solid the atoms are arranged in.

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Regular fashion

Random fashion

linear fashion

All of these

_____ remove the remaining color producing a water white sugar syrup

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Carbon filters

Centrifuge

Annealing

Refining

Setting of plaster of Paris volves.

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Oxidation with atmospheric oxygen

Combination with atmosphere CO2

Dehydration

Hydration to yield another hydrate

Metal crystallize is system having co ordination number

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8

12

14

any one of above

The point group of XeOF4 is.

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C6v

C4h

D4h

D2h

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

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Mg

Na

Ca

Sr

Explosive trioxide XeO3 is produced when

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XeOF4 reacts with water

XeOF4 reacts with silica

XeF4 reacts with water

Any of above statements

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