The property of crystalline solid is not

1

(a)

anisotropic

(b)

isotropic

(c)

hard

(d)

dense

The crystal with metal deficiency defect is

1

(a)

NaCl

(b)

FeO

(c)

KCl

(d)

ZnO

(e)

LiCl

Which of the following is not a characteristic of a crystalline solid?

1

(a)

Definite and characteristic heat of fusion.

(b)

Isotropic nature

(c)

A regular periodically repeated pattern of arrangement of constituent repeated pattern of arrangement of constituent particles in the entire crystal.

(d)

A true solid.

Which of the following is true about the value of refractive index of Quartz glass?

1

(a)

Same in all directions

(b)

Different in different directions

(c)

Cannot be measured

(d)

Always zero

KCl crystallises in the same type of lattice as does NaCl.Given that r_Na⁺/r_Cl^-=0.55 and r_K⁺/r_Cl^-=0.74.Calculate the side of the unit cell of KCl to that of NaCl

1

(a)

1.123

(b)

0.891

(c)

1.414

(d)

0.414

(e)

1.732

The molal freezing point constant of water is 1.86^o C/M. Therefore the freezing point of 0.1 M NaCl solution in water is expected to be

1

(a)

- 1.86^oC

(b)

- 0.186^oC

(c)

- 0.372^oC

(d)

+ 0.372^oC

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water \((\Delta { T }_{ f })\), when 0.01 mol of sodium sulphate is dissolved in 1 kg of water, is (K_f = 1.86 K kg mol^-1).

1

(a)

0.0744K

(b)

0.0186K

(c)

0.0372K

(d)

0.0558K

K_H value for Ar(g), CO₂(g), HCHO (g) and CH₄ (g) are 4.39,1.67,1.83 x 10^-5 and 0.413 respectively. Arrange these gases in the order of their increasing solubility.

1

(a)

HCHO42

(b)

HCHO24

(c)

Ar24

(d)

Ar42

\(6.02\times { 10 }^{ 20 }\) molecules of urea are present in 100 mL of its solution. The concentration of the solution is

1

(a)

0.02 M

(b)

0.01 M

(c)

0.001 M

(d)

0.1 M

A solution containing 0.10 g of non - volatile solute X (molar mass : 100) in 200 g of benzene depresses the freezing point of benzene by 0.25^oC while 0.50g of another non - volatile solute Y in 100 g of benzene also depresses by 0.25^oC. What is the molecular mass of Y ?

1

(a)

50

(b)

100

(c)

150

(d)

1000

Which of the following statements are correct concerning redox properties ?
(i) A metal M for which E⁰ for the half life reaction \({ M }^{ n+ }+{ ne }^{ - }\rightleftharpoons M\) is very negative will be a good reducing agent.
(ii) The oxidizing power of the halogen decreases from chlorine to iodine
(iii) The reducing power of hydrogen halides increases from hydrogen chloride to hydrogen iodide

1

(a)

(i), (ii) and (iii)

(b)

(i) and (ii)

(c)

(i) only

(d)

(ii) and (iii) only

(e)

(iii) only

For the half-cell reaction, \(2{ H }_{ 2 }O+{ 2e }^{ - }\longrightarrow { H }_{ 2 }+2{ OH }^{ - },{ E }^{ 0 }=-0.8277V\) at 298 K. Autoprotolysis constant of water calculated from this value will be

1

(a)

1 x 10^-10

(b)

1 x 10^-12

(c)

1 x 10^-13

(d)

1 x 10^-14

A lead storage battery has been used for one month (30 days) at the rate of one hour per day by drawing a constant current of 2 amperes. H₂SO₄ consumed by the battery is

1

(a)

1.12 mole

(b)

2.24 mole

(c)

3.36 mole

(d)

4.48 mole

Given the data at 25°C,
\(Ag+{ I }^{ - }\longrightarrow AgI+{ e }^{ - };{ E }^{ 0 }=0.152V\)
\(Ag\longrightarrow { Ag }^{ + }+{ e }^{ - };{ E }^{ 0 }=-0.800V\)
What is the value of log K_sp for AgI ? (2.303 RT/F = 0.059 V)

1

(a)

- 37.83

(b)

- 16.13

(c)

- 8.12

(d)

+ 8.612

The Gibbs energy for the decomposition of Al₂O₃ at 500°C is as follows :
\(\frac { 2 }{ 3 } { Al }_{ 2 }{ O }_{ 3 }\longrightarrow \frac { 4 }{ 3 } Al+{ O }_{ 2 },{ \Delta }_{ r }G=+966 \ kJ \ { mol }^{ -1 }\)
The potential difference needed for electrolytic reduction of Al₂O₃ at 500°C is at least

1

(a)

2.5 V

(b)

5.0 V

(c)

4.5 V

(d)

3.0 V

In the reaction BrO^-₃ (aq) + 5 Br ^- (aq) + 6 H⁺ \(\longrightarrow\) 3 Br₂(I) + 3 H₂O (l), the rate of apperance of bromine (BHr₂) is related to the disapearance of bromide uions as follows :

1

(a)

\(\frac { d[{ Br }_{ 2 }] }{ dt } =-\frac { 5 }{ 3 } \frac { d[{ Br }^{ - }] }{ dt } \)

(b)

\(\frac { d[{ Br }_{ 2 }] }{ dt } =\frac { 5 }{ 3 } \frac { d[{ Br }^{ - }] }{ dt } \)

(c)

\(\frac { d[{ Br }_{ 2 }] }{ dt } =\frac {3 }{ 5} \frac { d[{ Br }^{ - }] }{ dt } \)

(d)

\(\frac { d[{ Br }_{ 2 }] }{ dt } =-\frac { 3 }{ 5 } \frac { d[{ Br }^{ - }] }{ dt } \)

Consider a first order gas phase decomposition reaction given below : A(g) \(\longrightarrow\) B(g) + C(g) The initial pressure of the system before decomposition of A was pi . After lapse of time 't' , total pressure of the system increased by x the reaction is given as ............... .

1

(a)

k = \(\frac {2.303}{t} log \frac {p_i}{p_i - x}\)

(b)

k = \(\frac {2.303}{t} log \frac {p_i}{2p_i - p_i}\)

(c)

k = \(\frac {2.303}{t} log \frac {p_i}{2p_i + p_i}\)

(d)

k = \(\frac {2.303}{t} log \frac {p_i}{p_i +x}\)

Which of the following statements is not correct about order of a reaction ?

1

(a)

The order of a reaction can be a fractional number

(b)

Order of a reaction is experimentally determined quantity.

(c)

The order of a reaction is always equal to the sum of the stoichiometric coeffecients of reactants in the balanced chemnical equation for reaction.

(d)

The order of a reaction is the sum of the powers of molar concentration of the reaction in the rate law expression.

Rate law cannot be determined from balanced chemical equation if ........ .

1

(a)

reverse reaction is involved

(b)

it is an elementary reaction

(c)

it is a sequence of elementary reactions

(d)

any of the reactants is in excess.

In the synthesis of ammonia from nitrogen and hydrogen gases, if 6\(\times 10 ^{-2 }\) mole of hydrogen disappears in 10 minutes, the number of moles of ammonia formed in 0.3 minutes is 

1

(a)

1.8\(\times 10 ^{-2 }\)

(b)

1.2\(\times 10 ^{-2 }\)

(c)

4\(\times 10 ^{-2 }\)

(d)

3.6\(\times 10 ^{-2 }\)

Half -lives of a first order and a zero order reaction are same. Then the ratio of the initial rates of the first order reaction to that of zero order reaction is 

1

(a)

\(\frac {1}{0.693}\)

(b)

2\(\times\) 0.693

(c)

0.693

(d)

\(\frac {2 }{0.693}\)

The rate constant of a second order reaction, 2A\(\longrightarrow\) Products, is 10^-4 lit mol^-1 min^-1. The initial concentration of the reactant is 10^-2 mol lit^-1. What is the half-life (in min) ?

1

(a)

10

(b)

1000

(c)

100

(d)

10⁶

At 500 K, the half-life period of a gaseous reaction at the initial pressure of 80 kPa is 350 sec. When the pressure is 40 kPa, the half-life period is 175 sec. The order of reaction is 

1

(a)

second

(b)

more than zero but less than first

(c)

zero

(d)

first

Under the same reaction conditions, initial concentration of 1.386 mol dm^-3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero kinetices respectively. Ratio (k₁/k₀) of the rate constants for first order (k₁) and zero order (k₀) of the reactions is 

1

(a)

0.5 mol^-1 dm³

(b)

1.0 mol^-1 dm^-3

(c)

1.5 mol^-1 dm^-3

(d)

2.0 mol^-1 dm³

For an endothermic reaction, where \(\triangle H\) represents the enthalpy of the reaction in kJ/mol. The minimum value for the energy of activation will be

1

(a)

 less than \(\triangle H\)

(b)

zero

(c)

more than \(\triangle H\)

(d)

equal to \(\triangle H\)

The emulsifying agent present in milk that makes it stable is

1

(a)

lactose

(b)

maltose

(c)

casein

(d)

lactic bacilli

Adsorption is accompanied by

1

(a)

decrease in enthalpy and increase in entropy

(b)

increase in enthalpy and increase in entropy

(c)

decrease in enthalpy and decrease in entropy 

(d)

no change in enthalpy and entropy

Which property of colloidal solution is independent of charge on the colloidal particles ?

1

(a)

Electro - osmosis

(b)

Tyndall effect

(c)

Coagulation

(d)

Electrophoresis

Which of the following is not a favourable condition for physical adsorption?

1

(a)

high pressure

(b)

negative \(\triangle H\)

(c)

higher critical temperature of adsorbate

(d)

high temperature

The method of zone refining of metals is based on the principle of 

1

(a)

greater mobility of the pure metal than that of the impurity

(b)

higher melting point of the impurity than that of the pure metal

(c)

greater noble character of the solid metal than that of the impurity

(d)

greater solubility of the impurity in the molten state than the solid

Which of the following reactions occur during calcination?

1

(a)

CaCO₃\(\longrightarrow\)CaO+CO₂

(b)

2FeS₂+\(1\over2\)O₂\(\longrightarrow\)Fe₂O₃+4SO₂

(c)

Al₂O₃.xH₂O\(\longrightarrow\)Al₂O₃+xH₂O

(d)

ZnS+\(3\over2\)O₂\(\longrightarrow\)ZnO+SO₂

Sulphide ores of metals are usually concentrated by Froth Floatation process.Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?

1

(a)

Sphalerite

(b)

Argentite

(c)

Galena

(d)

Copper pyrite

Which of the following reaction is an example of calcination process?

1

(a)

2Ag + 2HCl + [O]\(\longrightarrow\)2AgCl + H₂O

(b)

2Zn + O₂\(\longrightarrow\) 2ZnO

(c)

2ZnS + 3O₂\(\longrightarrow\) 2ZnO + 2SO₂

(d)

MgCO₃ \(\longrightarrow\) MgO + CO

Cryolite is

1

(a)

Na₃AlF₆ and is used in the electrolysis of alumina for lowering the melting point of alumina only

(b)

Na₃AlF₆ and is used in the electrolytic refining of alumina

(c)

Na₃AlF₆ and is used in the electrolysis of alumina for decreasing electrical conductivity

(d)

Na₃AlF₆ and is used in the electrolysis of alumina for lowering the melting point and increasing the conductivity of alumina

For H₃PO₃ and H₃PO₄, the correct choice is 

1

(a)

H₃PO₃ is dibasic and reducing

(b)

H₃PO₄ is dibasic and non-reducing

(c)

H₃PO₄ is tribasic and reducing

(d)

H₃PO₃ is tribasic and non-reducing

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

1

(a)

F<Cl<O<S

(b)

S<O<Cl>F

(c)

O<S<F<Cl

(d)

Cl<F<S<O

On heating ammonium dichromate and barium azide separately we get

1

(a)

N₂ in both cases

(b)

N₂ with ammonium dichromate and NO with barium azide

(c)

N₂O with ammonium dichromate and N₂ with barium azide.

(d)

N₂O with ammonium dichromate and NO₂ with barium azide.

Hot conc. H₂SO₄ acts as moderately strong oxidising agent. It oxidises both metals and nonmetals. Which of the following element is oxidised by conc. H₂SO₄ into two gaseous products?

1

(a)

Cu

(b)

S

(c)

C

(d)

Zn

In which of the following reactions, conc. H₂SO₄ is used as an oxidising reagent?

1

(a)

CaF₂ + H₂SO₄  \(\rightarrow\)  CaSO₄ + 2HF

(b)

2HI + H₂SO4 \(\rightarrow\) I₂ + SO₂ + 2H₂O

(c)

Cu + 2H₂SO₄ \(\rightarrow\) CuSO₄ + SO₂ + 2H₂O

(d)

NaCl + H₂SO₄ \(\rightarrow\) NaHSO₄ + HCl

The orange solid on heating gives a colourless gas and a green solid which cab be reduced to metal by aluminum powder.  The orange and the green solids are, respectively,

1

(a)

(NH₄)₂Cr₂O₇ and Cr₂O₃

(b)

Na₂Cr₂O₇ and Cr₂O₃

(c)

K₂Cr₂O₇ and CrO₃

(d)

(NH₄)₂CrO₄ and CrO₃

Nitric acid can be obtained from ammonia via the formation of the intermediate compounds

1

(a)

nitric oxide and nitrogen dioxide

(b)

nitrogen and nitric oxide

(c)

nitric oxide and dinitrogen pentoxide

(d)

nitrogen and nitrous oxide

Nitrogen dioxide and sulphur dioxide have some properties in common.  Which property is shown by one of these compounds, but not by the other?

1

(a)

Is soluble in water

(b)

Is used as a food preservatives

(c)

Forms 'acid rain'

(d)

Is a reducing agent

In which of the following arrangements, the given sequence is not strictly according to the property indicated against it ?

1

(a)

HF<HCl<HBr<HI : increasing acid strength

(b)

H₂O<H₂S<H₂Se<H₂Te : increasing pK_a values

(c)

NH₃<PH₃<AsH₃<SbH₃ : increasing acidic character

(d)

CO₂<SiO₂<SnO₂<PbO₂ : increasing oxidising power

If I₂ is dissolved in aqueous KI, the intense yellow species, I\(\overset{-}{3}\) is formed.  The structure of I\(\overset{-}{3}\) ion is 

1

(a)

square pyramidal

(b)

trigonal bipyramidal

(c)

octahedral

(d)

pentagonal bipyramidal

KMnO₄ acts as an oxidising agent in acidic medium. The number of moles of KMnO₄ that will be needed to react with one mole of sulphide ions in acidic solution is

1

(a)

\(\frac { 2 }{ 5 } \)

(b)

\(\frac { 3 }{ 5 } \)

(c)

\(\frac { 4 }{ 5 } \)

(d)

\(\frac { 1 }{ 5 } \)

Among the following pairs of ions, the lower oxidation state in aqueous solution is more stable than the other, in

1

(a)

Ti⁺,Ti³⁺

(b)

Cu⁺,Cu²⁺

(c)

Cr²⁺,Cr³⁺

(d)

V²⁺,VO²⁺

A student accidently added conc . H₂SO₄ to potassium permanganate and it exploded due to the formation of an explosive which is 

1

(a)

MnO

(b)

Mn₂O₃

(c)

Mn₂O₅

(d)

Mn₂O₇

In context of the lanthanoids, which of the following statements is not correct ?

1

(a)

All the members exhibit +3 oxidation state

(b)

Because of similar properties, the separation of lanthanoids is not easy.

(c)

Availability of 4f electrons results in the formation of compounds in +4 state for all the members of series.

 

(d)

There is a gradual decrease in the radii of the members with increasing atomic number in the series.

Pick out the correct statements from the following
1. Cobalt (III) is more stable in octahedral complexes.
2. Zinc forms coloured ions or complexes.
3. Most of the d - block elements and their compounds are ferromagnetic.
4. Osmium shows (VIII) oxidation state.
5. Cobalt (II) is more stable in octahedral complexes.

1

(a)

1 and 2

(b)

1 and 3

(c)

2 and 4

(d)

1 and 4

(e)

2 and 5

Which kind of isomerism is exhibited by octahedral [Co(NH₃)₄Br₂] Cl? 

1

(a)

Geometrical and ionisation 

(b)

Geometrical and Optical

(c)

Optical and ionization

(d)

Geometrical only

\({ Ag }^{ + }+{ NH }_{ 3 }\rightleftharpoons \left[ Ag\left( { NH }_{ 3 } \right) \right] ^{ + }\) ; K₁= 6.8 x 10^-3
\(\left[ Ag\left( { NH }_{ 3 } \right) \right] ^{ + }+{ NH }_{ 3 }\rightleftharpoons \left[ Ag\left( { NH }_{ 3 } \right) _{ 2 } \right] ^{ + }\)
then the formation constant of [Ag(NH₃)₂]⁺ is 

1

(a)

\(1.08\times { 10 }^{ -7 }\)

(b)

\(1.08\times { 10 }^{ -5 }\)

(c)

\(1.08\times { 10 }^{ -9 }\)

(d)

none of these

Which of the following is diamagnetic in nature?

1

(a)

Co³⁺, octahedral complex with weak field ligands

(b)

Co³⁺, octahedral complex with strong field ligands

(c)

Co²⁺ in tetrahedral complex

(d)

Co²⁺ in square planar complex

CuCl is insoluble in water but it dissolves in KCl solution. This is due to the formation of the complex

1

(a)

K₂[CuCl₃]

(b)

K₃[CuCl₄]

(c)

K[CuCl₂]

(d)

All of these

The compounds [Co(SO₄)(NH₃)₅]Br and [Co(SO₄)(NH₃)]Cl represent

1

(a)

Linkage isomerism

(b)

ionisation isomerism

(c)

Coordination isomerism

(d)

no isomerism

Addition of HBr gives same product in the presence or absence of peroxide when alkene is

1

(a)

1-butene

(b)

2-methylpropene

(c)

propene

(d)

2-butene

Best reagent for nuclear iodination of aromatic compounds is

1

(a)

KI/CH₃COCH₃

(b)

I₂/CH₃CN

(c)

KI/CH₃COOH

(d)

I₂/HNO₃

The compound,

C₇H₈  \(\xrightarrow { 3{ CI }_{ 2 }/\triangle } A\xrightarrow { Br_{ 2 }/Fe } B\xrightarrow { Zn/HCI } C\)

The compound C is

1

(a)

o-Bromotoluene

(b)

m-Bromotoluene

(c)

p-Bromotoluene

(d)

3-Bromo-2,4,6-trichlorotoluene

Alkyl halides are prepared from alcohols by treating with

1

(a)

HCl+ZnCl₂

(b)

Red P+Br₂

(c)

H₂SO₄+KI

(d)

All the above

Out of the following the alkene that exhibits optical isomerism is

1

(a)

3-methyl-1-pentene

(b)

2-methyl-2-pentene

(c)

3-methyl-2-pentene

(d)

4-methyl-1-pentene

The compound (C) in the following series of reactions is:
\(Aceton+{ CH }_{ 3 }MgBr\overset { Dry\ ether }{ \longrightarrow } A\overset { { H }_{ 3 }{ O }^{ + } }{ \longrightarrow } B\overset { 363K }{ \underset { 20%{ H }_{ 2 }{ SO }_{ 4 } }{ \longrightarrow } } C+H_{ 2 }O\)

1

(a)

2-Methylpropene

(b)

but-2-ene

(c)

but-1-ene

(d)

propene

Phenol can be distinguished from ethanol by the following reagents except

1

(a)

sodium

(b)

NaOH/I₂

(c)

neutral FeCl₃

(d)

Br₂/H₂O

Products obtained when HI reacts with isopropyl methyl ether at 373 K are

1

(a)

isopropyl iodide and methyl alcihol

(b)

isopropyl alcohol and methyl iodide

(c)

isopropyl iodide and water

(d)

methyl iodide and water

CH₃OC₂H₅ and (CH₃)₃ COCH₃ are treated with hydriodic acid. The fragments after reactions obtaind are:

1

(a)

CH₃I+HOC₂H₅ ; (CH₃)₃C-I+HOCH₃

(b)

CH₃HO+C₂H₅I; (CH₃)₃C-I+HOCH₃

(c)

CH₃OH+C₂H₅I; (CH₃)₃C-OH+CH₃I

(d)

CH₃I+HOC₂H₅; CH₃I+(CH₃)₃C-O H

Consider the following reaction, ethanol \(\overset{PCl_5}\longrightarrow\) X \(\overset{alc.KOH}\longrightarrow\) Y \(\overset{H_2SO_4}{\underset {(ii)H_2O,room temperature}{\longrightarrow}}\) Z The product Z is:

1

(a)

CH₃CH₂ - O - CH₂CH₃

(b)

CH₃CH₂ - O-SO₃H

(c)

CH₃CH₂OH

(d)

CH₂ = CH₂

Which among the following compounds will give a secondary alcohol on reacting with Grignard reagent followed by acid hydrolysis?
I. HCHO
II. C₂H₅CHO
III. CH₃COCH₃ IV.RCOOC₂H₅
Select the correct answer using the code given below:

1

(a)

Only II

(b)

Only III

(c)

II and IV

(d)

III and IV

Phenylmagnesium bromide reacts with methanol to give

1

(a)

a mixture of anisole and Mg(OH)Br

(b)

a mixture of benzene and Mg(OMe)Br

(c)

a mixture of toluene and Mh(OH)Br

(d)

a mixture of phenol and Mg(OH)Br

Isopropyl benzene is oxidised in the presence of air to compound 'A'. When compound 'A' is treated with dilute mineral acid,the aromatic product formed is

1

(a)

phenol

(b)

benzene

(c)

benzaldehyde

(d)

acetophenone

(e)

toluene

Ortho-nitrophenol is less soluble in water than p-and m-nitrophenols because

1

(a)

o-nitrophenol shows intramolecular H-bonding

(b)

o-nitrophenol shows intramolecular H-bonding

(c)

melting point of o-nitrophenols is lower than those of m- and p-nitrophenol

(d)

o-nitrophenol is more volatile in steam than those of m- and p-isomers

Among the following sets of reactants which one produces anisole?

1

(a)

CH₃CHO; RMgX

(b)

C₆H₅OH; CH₃I

(c)

C₆H₅OH; neutral FeCl₃

(d)

C₆H₅CH₃; CH₃COCl; AlCl₃

The product formed in Aldol condensation is

1

(a)

an alpha, beta unsaturated ester

(b)

a beta hydroxy acid

(c)

a beta hydroxyaldehyde or ketone

(d)

an alpha hydroxy aldehyde or ketone

When propionic acid is treated with aqueous sodium bicarbonate, CO₂ is liberated. The 'C' of CO₂ comes from

1

(a)

methyl group

(b)

carboxylic acid group

(c)

methylene group

(d)

bicarbonate

Which of the following is the industrial method of preparation of acetaldeyde ?

1

(a)

CH3CN \(\xrightarrow [ HCI ]{ Sn{ CI }_{ 2 } } \) CH3CH = NH \(\xrightarrow {H_3O^{+}}\)

(b)

CH3COCI + H2 \(\xrightarrow [ BaSO_4 ]{Pd } \) CH3CHO + HCI

(c)

CH2 = CH2 + H2O \(\xrightarrow {Pd ^{2+}}\)

(d)

All of the above.

Reaction of Carbonyl compound with one of the following reagents involves nucleophilic addition followed by elemination of water. The reagent is 

1

(a)

hydrazine in presence of feelby acidic solution

(b)

hydrocyanic acid

(c)

sodium hydrogen sulphite

(d)

Grignard reagent

Amoung the following compounds. most acidic is 

1

(a)

p-nitrophenol

(b)

p-hydroxybenzoic acid

(c)

o-hydroxybenzoic acid

(d)

p-toluic acid

Ethylamine on heating with CS₂ in presence of HgCl₂ forms

1

(a)

\({ C }_{ 2 }{ H }_{ 5 }NCS\)

(b)

\(\left( { C }_{ 2 }{ H }_{ 5 } \right) _{ 2 }S\)

(c)

\(\left( { C }_{ 2 }{ H }_{ 5 } \right) _{ 2 }CS\)

(d)

\({ C }_{ 2 }{ H }_{ 5 }\left( CS \right) _{ 2 }\)

m-Bromoaniline can be prepared by

1

(a)

\({ C }_{ 6 }{ H }_{ 6 }\quad \overset { { HNO }_{ 3 } }{ \underset { { H }_{ 2 }{ SO }_{ 4 } }{ \longrightarrow } } \quad \overset { 1.Sn-HCI }{ \underset { { 2.NaOH,H }_{ 2 }O }{ \longrightarrow } } \quad \overset { { Br }_{ 2 } }{ \underset { H_{ 2 }O }{ \longrightarrow } } \)

(b)

\({ C }_{ 6 }{ H }_{ 6 }\ \overset { { Br }_{ 2 } }{ \underset { { FeBr }_{ 3 } }{ \longrightarrow } } \quad \overset { { HNO }_{ 3 } }{ \underset { H_{ 2 }{ SO }_{ 4 } }{ \longrightarrow } } \quad \overset { { H }_{ 2 } }{ \underset { Pt }{ \longrightarrow } } \)

(c)

\(m-Br{ C }_{ 6 }{ H }_{ 4 }COOH\ \overset{ SOCI_{ 2 } }{ \longrightarrow } \quad \overset { NH_{ 3 } }{ \longrightarrow } \quad \overset { Br_{ 2 },NaOH }{ \longrightarrow } \)

(d)

\({ C }_{ 6 }{ H }_{ 5 }{ NH }_{ 2 }\quad \overset { { NaNO }_{ 2 },HCI }{ \underset { { Cu }_{ 2 }Br_{ 2 } }{ \longrightarrow } } \overset { SOCI_{ 2 } }{ \longrightarrow } \quad \overset { NaNH_{ 2 } }{ \longrightarrow } \)

Whaich of the following exist as zwitterion?

1

(a)

p-aminophenol

(b)

salicylic acid

(c)

sulphanilic acid

(d)

Ethanolamine

(e)

p-aminoacetophenon

Which of the following diazonium salt is most stable?

1

(a)

p-Nitrobenzenediazonium chloride

(b)

2, 4-Dinitrobenzenediazonium chloride

(c)

2, 4, 6-Trinitrobenzenediazonium chloride

(d)

p-Methoxybenzenediazonium chloride

Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute HCI. The compound so formed is converted into tetrafluoroborate which is subsequently heated dry. The final product is

1

(a)

p-bromofluorobenzene

(b)

p-bromoaniline

(c)

2, 4, 6-tribromofluorobenzene

(d)

1, 3, 5-tribromobenzene

The number of chiral carbons in \(\beta \) -D (+)- glucose is 

1

(a)

five 

(b)

six

(c)

three

(d)

four

Which of the following is a steroid hormone? 

1

(a)

Progesterone 

(b)

Insulin

(c)

Thyoxine

(d)

Oxytocin

Glucose molecule reacts with X number of molecules of phenydrazine to yield osazone. The value of X is

1

(a)

three

(b)

two

(c)

one

(d)

four

The hormone which controls the processes of burning of fast, proteins and carbohydrates and liberates energy in the body is

1

(a)

thyroxine

(b)

adrenaline

(c)

insulin

(d)

cortisone

In DNA, the complimentary bases are

1

(a)

adenine and guanine ; thymine and cytosine

(b)

uracil and adenine ; cytosine and guanine

(c)

adenine and thymine ; guanine and cytosine

(d)

adenine and thymine ; guanine and uracil

Which of the following is a branched polymer?

1

(a)

Low density polythene

(b)

Polyester

(c)

Nylon

(d)

PVC

Which of the following is a step-growth polymer?

1

(a)

Polyacrylonitrile

(b)

Polyisoprene

(c)

Nylon

(d)

Polythene

Which of the following polymers of the glucose is stored by animals?

Cellulose Amylose  Amylopectin  Glycogen

1

(a)

Cellulose

(b)

Amylose

(c)

Amylopectin

(d)

Glycogen

Which of the following statements is not true about low density polythene?

1

(a)

Tough

(b)

Hard

(c)

Poor conductor of electricity

(d)

Highly branched structure

Which of the following monomers form biodegradable polymers?

1

(a)

3-hydroxybutanoic acid + 3-hydroxypentanoic acid

(b)

Glycine + \(\epsilon\)-aminocaproic acid

(c)

Ethylene glycol + phthalic acid

(d)

Caprolactum

Which of the following are examples of synthetic rubber?

1

(a)

Polychloroprene

(b)

Polyacrylonitrile

(c)

Buna-N

(d)

cis-Polyisoprene

Which of the following is a chain growth polymer?

1

(a)

Starch

(b)

Nucleic acid

(c)

Polystyrene

(d)

Proteiuns

The species which can best serve as an initiator for the cationic polymerization is

1

(a)

HNO₃

(b)

AlCl₃

(c)

BuLi

(d)

LiAlH₄

Terylene is a condensation polymer of ethylene glycol and

1

(a)

benzoic acid

(b)

phthalic acid

(c)

salicylic acid

(d)

terephthalic acid

Which of the following are biodegradable polymers?

1

(a)

Nylon-6,6

(b)

PHBV

(c)

Nylon-2-Nylon-6

(d)

Polychloroprene

Which of the following antacids is an antihistamine ?

1

(a)

Ranitidine

(b)

Lansoprazole

(c)

Terfenadine

(d)

Luminal

Compound which is added to soap to impart antiseptic properties is ............. .

1

(a)

sodium lauryl suphate

(b)

sodium dodecylbenzenesulphonate

(c)

rosin

(d)

bithional

Use of chemicals for therapeutic effect is called

1

(a)

medicines 

(b)

chemotheraphy

(c)

drug target interaction

(d)

phototheraphy

The sweetest artificial sugar among the following is 

1

(a)

aspartane

(b)

sucrolose

(c)

alitame

(d)

sucrose

Which one of the following is a cationic detergent ?

1

(a)

Sodium lauryl sulphate

(b)

Cetyltrimethylammonium bromide

(c)

Sodium dodecylbenzenesulphonate

(d)

Glyceryl palmitate

(e)

Glyceryl oleate