Question # 1

Which of the following is the second anciently known metal.

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Nickel

Copper

Gold

Silver

XeF4 is obtained, when a mixture of Xenon and fluorine in the ratio is heated in a nickle vessel at 400 ^oC

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1 : 3

5 :1

1 :20

1 :5

Which of the following is branch chain polymer.

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Glycogen

Terylene

PVC

Orlen

Which trihalide is not hydrolysed by water

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NF3

NCl3

PCl3

AsCl3

Which of the following is an azo dye.

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Congo red

Rhodamine B

Ertythroein

Paraosaniline

Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking.

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cyclic hydrocarbon chain

Shorter hydrocarbon chain

Unbranched hydrocarbon chain

Benzenoid hydrocarbons

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

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Ca

Mg

Li

Ba

Stable metal ions strictures are.

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Noble gas structure

Is electron group structure

Transition metal in structure

All of the above

The polarity of bonds can lead to polarity of molecules and affect

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Melting point

Boiling point

Solubility

All of above

Which of the following is the active ingredient in ordinary household bleach.

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HCl

Cl2

NaCl

NaCIO

Used for sterilizationof drinking water

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F

Br

Cl

I

Which of the following detector is used in GC analysis

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Thermal conductivity detector

Flame ionization detector

Mass spectrometer

All above

The change in the concentration of the reactant of product per units time is called.

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Order of the reaction

Melecularity of the reaction

Rate of reaction

None of the above

Which of the following is the correct order of interactions.

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Covalent < hydrogen bonding < Van Der Waal's < dipole -dipole

Van der Waal's < hydrogen bonding < dipole -dipole < covalent

Van der Waal's < dipole -dipole < hydrogen bonding < covalent

Dipole-dipole < Van der Waal's < hydrogen bonding < covalent

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 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%

The name hydrogen was proposed by.

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Lavoisier

Rutherford

Henry Cavandish

Scheele

Which of the following statements is false about enantiomers.

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Rotate plane of polarized light

Are superimposable mirror images

Nbonsuperimposable mirror images

All of the above

Which of the following statement is not true for carbon.

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Its forms compounds with multiple bonds

Its ionization energy is very high

It undergoes catanation

It shows inert pair effect

Opticla tweezers

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Are used to remove facial hair with miniaturized laser beams

use light to manipulate particles as small as single atom

Are a nanotechnology bases tool for stamp collectors

Don't exist

NH3 has a not dipole moment while BF3 has zero dipole moment Thsi is because.

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NH3 is not a planar molecule while BF3 is a planar molecule.

NH3 is a planar molecule, while BF3 is a planner molecule.

Fluorine is more electronetative than nitrogen

Born is more electronegative than nitrogen

The diameter of fly ash particles is._________ micro meter

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5-10

10-20

20-30

100

If steel is heated to a temperature well below red heated and is then cooled slowly the process is called.

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Annealing

Quenching

Tempering

Nitriding

Which of the following process is not sorbent separation technolgy.

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Penex

Parex

Molex

Olex

__________ are the extensions of bucky balls.

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Goodesic domes

Hexagons

Carbon nanotubes

AFM and STM

The number used in cancer therapy is.

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Fe

Co

Ni

Rn

Which of the following pollutants results from chemicals petroleum and paper industries.

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SO2

CO

Hydrocarbons

All above

What group of steels are molybdenum high sped steels.

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Group A

Group D

Group M

Group H

In order to give strength and elasticity natural rubber is heated with.

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Sulphur

Oxygen

Nitrogen

Chlorine

Which of the following statement is not correct n respect of Arrhenius concept.

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The concept is applicable only for aqueous systems.

Neutralization takes place in aqueous mediam only

TH+ ion cannot remain as such in water

This concept is applicable for non aqueous system only.

The state of hybridization of carbon in CO2 is

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sp2

sp

sp3

dsp2

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