Question # 1

The variation of enthalpy of reaction with temperature is given by.

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Hesse's law

Clasisus Clapayron equation

Kirchoffs equation

Arrhenious equation.

An acid base titration involves a neutralization reaction in which an acid is reacted with an equivalent amount of base The titrant is always a strong acid or base The analyte may be

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Strong acid

Strong base

Weak acid and Weak base

All above

Which of the following statements is not related with joule Thomson effect.

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Joule Thomson is 0 isenthalpic in nature

H2 and He show heating effect

All gases show change in temperature

The change in temperature depends on initial temperature and nature of the gas.

Joule Thomson coefficient is defined as meo= (op/oT)H

Which of the following steps is not involved in chemical analysis.

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Separation of sample in pure form

Separation of the sample in the mixture form

Preparation of sample for the analyisis

Validity of experimental results

Which of the following statements is not correct with respect to applications of Hammett equations.

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It develops a quantitative relationship between structure and reactivity

This equation on can be used to calculate the value of pK_a

This equation does not help to calculate the rate of some reactions

This equation has mechanistic implications

Coulometry is based on the measurement of

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Electrical current

Electrical potential

Electrical conductance

Dielectric constant

Strength of H bond in inter mediate between

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Van der Waals forces and covalent bond

Ionic and covalent bond

Ionic and metallic bond

Metallic and covalent

Arrange the hydrides group 15 in the order of increasing boiling point.

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PH3 < AsH3 <SbH3 < BiH3 <NH3

PH3 <AsH3< SbH3< NH3 < BiH3

PH3 < AsH3<NH3 <SbH3<BiH3

NH3 < PH3 < AsH3 < Sb H3 < BiH3

BCl3 is a planar molecule because B atom is.

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sp2 hybridized

Sp3 hybridized

sp hybridzed

sp3 d hybridized

CNG is stored under

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Power genertion

Electric Generators

Solvent

All of above

The element Uuu has atomic numebr

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102

111

101

110

Which of the following elements has the highest density.

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Mg

Na

K

Rb

In a period, the element with biggest electron affinity belong to.

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Group 1

Group 2

Group 17

Group 18

The soap and detergent are source of organic pollutants like.

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Glycerol

Polyphosphates

Sulphonated hydrocarbons

All of these

In order to increase the rate of the reaction one should.

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Increase the concentration of products

Decrease the concentration of reactants

Decreases the concentration of products

Both C and D statement are correct

The rays emitted by the cathode in a gas discharge tube under low pressure and high voltage of electricity are called cathode rays. Which of the following properties are not related to cathode rays.

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These travel in a straight lines.

These are deflected by magnetic and electric field.

Minerals Fluoreace with a characteristic color when placed in a beam of cathode rays.

These are dependent of the material used for the electrode.

Equilibrium constant Kp and Kc are related as

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Kc = Kp (RT)delta n

Kp = Kc (RT)an

Kp = (Kc/RT)delta n

Kp -Kc = (RT)delta n

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

The phase rule was deduced by

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Gibbs

Thomson

Troution

Henry

Hydrolith is the common name of

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NaH

CaH2

NaF

CaF2

20 micron =____________________ nm

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20 x10^-9

20000

200

20x10⁹

Which of the following is not true of ozone.

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It is a strong electilizing agent

It attacks organic compounds containing carbon carbon double bond

Its molecular is linear and has two different O-O bond lengths

It is more powerful oxidising agent at molecular oxygen

Keeping in view the periodic law and periodic table, suggest which of the following elements should have maximum electronegative character.

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Oxygen

Nitrogen

Fluorine

Astatine

Which of the following elements has the highest third ionization energy.

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Sodium

Magnesium

Aluminum

Silicon

Which of the following method is based on the solubility difference between the analyte and the unwanted components.

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Distillation

Complex formation

Electrodepostion

Precipitation

Group IV A consist of elements.

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3

4

5

6

The compound which does not act as Lewis acid is.

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BF3

AlCl3

BeCl2

SnCl4

Egyptians were using ________ to prepare make up for eyes.

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Nanoaluminium

Nanocopper

Nanosteel

Nanolead

Colour in transition metal compounds in attributed to

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Small sized metal ions

Absorption of light in UV region

Complete ns sub shell

incomplete (n-1) sub shell

Example of inter molecular H-bonding is

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NH3 and H2O

HF

CH3COOH

All of abvoe

In XeF2 molecules, Xe atom undergoes hybridization

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spd

sp2

sp3

sp3d

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