Question # 1

Alcohols react with carboxylic acid to produce the class of compounds known as

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Grignard's reagent

Esters

Amides

None of these

acetylene can be converted into-while passing through a Cu-tube at 300°C:

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Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

The total number of d-bock transition element is

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10

14

40

30

Which class of compound is more reactive

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Alkane

Alkene

Alkyne

None

Mustard gas is a

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Gas

High boiling speed

High melting liquid

Steam

The number of atoms or molecules whose concentrations determine the rate of the reaction is called

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Molecularity

Order

Rate of reaction

Rate constant

Which is litharge or massicot?

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PbO

Pb₂O

Pb₃O₄

PbO₂

The radius of ion while considering it to be spherical in shape is called:

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Covalent radii.

Atomic radii.

Ionic radii.

Both (a) and (C).

A single benzene ring can have ______ ortho position maximally

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One

Two

Three

Four

Which of the following reagent will react with both aldehyde and ketones?

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Grinard's reagent

Tollen's reagent

Fehling's reagent

Benedict's reagent

The energy of the system and surrounding is conserved. This is a statement of

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Law of mass action

Law of definite proportion

Law of conservation of energy

Second law of thermodynamics

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0

1

2

3

For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test

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HCHO and CH₃CHO

CH₃CHO and CH₃COCH

CH₃COCH₃and C₆H₅COCH₃

CH₃COOH and CH₃COOCH₃

Unpleasant smell of carbylamine is obtained when chloroform and alcoholic KOH are heated with

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Any aromatic amine

Any primary amine

Any amine

Any aliphatic amine

For the representative elements from left to right across a period in the periodic table, the electron effinity of the atom generally

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Increases

Remains constant

Decreases

Not clear

Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements

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Transition elements show variable oxidation states

Their salts are coloured

They can be used as catalyst

All of them are metals

Which set of hybrid orbitals has planar triangular shape

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sp³

sp

sp²

dsp²

The method involved for electrolysis of Na or K salts of carboxylic acids

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Sabatier's sendrens reaction

Kolbe's method

Clemmensen

Wolf kishner reduction

denaturing of alcohol is done by adding methanol in ethanol:

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10%

20%

30%

40%

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

A chemical reaction A---------->B is said to be in equilibrium when :

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Rate of transformation of A to B is equal to B to A.

50% reactant has been changed to B.

Conversion of A to B is 50% complete

Complete conversion of A to B has taken place.

Acetic acid is manufactured by the fermentation of

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Ethanol

Methanol

Ethanal

Methanal

Which on of the following compounds does not exist?

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NCl₅

AsF₅

SbCl₅

PF₅

Proteins and amino acid can be separated by:

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Filtration

^Sublimation

Chromatography

Suction

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

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1, 1-Dimethyl-3-butene

1,1,1-Trimethyl-3-propene

3,3,-Dimenthyl-1-butene

3,3,3,-Trimethyl-1-propene

Oxalic acid oxidizes to:

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CO

CO₂

Oxalates

None of these

Coinage metals like Au, Pt, Ag and Cu are the least reactive metals and don't liberate H₂gas when treated with acids because

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These have very high positive values of reduction potentials

These have very high negative values of reduction potentials

Their ionization potentials are lowest

Their reduction potentials are close to SHE

Which has highest 1st I.E.

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Br

Cl

F

l

Which of the following sulphates has the highest solubility in water

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BaSO₄

CaSO₄

MgSO₄

BeSO₄

According to Mendeleev, the properties of the elements are periodic function of their

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Atomic number

Atomic volumes

Atomic masses

Atomic densities

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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Low value

Higher value

Both values

None of these

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