Which of the following is incorrect with respect to metallurgy of iron in the blast furnace?

(a)

Zone of combustion : \(C+{ O }_{ 2 }\rightarrow { CO }_{ 2 }\)

(b)

Zone of heat absorption : \({ CO }_{ 2 }\rightarrow C+{ O }_{ 2 }\)

(c)

Zone of slag formation : \(CaO+{ SiO }_{ 2 }\rightarrow CaSiO_{ 3 }\)

(d)

Zone of reduction : \({ Fe }_{ 2 }{ O }_{ 3 }3C\rightarrow 3CO+2Fe\)

Which one of the following element is present as a impurity in pig iron?

(a)

Phosphorus

(b)

Manganese

(c)

Carbon

(d)

Silicon

Chemical formula of phosgene is_______.

(a)

COCl₂

(b)

CaOCl₂

(c)

CaCO₃

(d)

COCI

Identify the electron - deficient species

(a)

(BH₃)₂

(b)

(SiH₃)₂

(c)

PH₃

(d)

(CH₃)₂

Hybridisation of chromium ions and dichromate ions is ________.

(a)

Sp²

(b)

Sp³d

(c)

both (a) and (b)

(d)

None of these

Which one of the following exhibits highest oxidation state?

(a)

Ni

(b)

Mn

(c)

V

(d)

Zr

An aqueous solution of (PdCI)₂ 4NH_3, when treated with excess of AgNO₃ precipitated 2 moles of AgCI. Predict the secondary valency of the compound _______.

(a)

2

(b)

3

(c)

4

(d)

6

Naming the ligand in [M(en)₂]ⁿ⁺starts with _______.

(a)

Di

(b)

Bi

(c)

Bis

(d)

any of these

In an octahedral complex, the (n-1) d orbital are involved in hybridization. The complex is called ________ complex.

(a)

inner orbital

(b)

low spin

(c)

spin paired

(d)

all the above

In which of the following arrangements, octahedral voids are formed?

(a)

fcc

(b)

bcc

(c)

simple cubic

(d)

hcp

Which of the following is incorrect statement about the Bragg's equation nλ = 2d sin θ?

(a)

n, represents order of reflection

(b)

λ, represents wave length of uv-rays used

(c)

θ, represents angle of incidence

(d)

d, represents distance between two parallel planes

Crystalline solids are also called as _______.

(a)

supercooled liquids

(b)

true solids

(c)

pseudo solids

(d)

all the above

The number of octahedral void(s) per atom present in a cubic close-packed structure is_________.

(a)

1

(b)

2

(c)

3

(d)

4

The coordination number of ZnS is _______.

(a)

3

(b)

4

(c)

6

(d)

8

The depletion of ozone involves the following steps:
Step 1: O₂ +O \(\overset { { k }_{ 1 } }{ \underset { { k }_{ 2 } }{ \rightleftharpoons } } \) O₃ (fast)
Step 2: O₃ +O \(\overset { k }{ \longrightarrow } \) 2O₂ (slow)
The predicted order of the reaction will be ______.

(a)

I

(b)

II

(c)

III

(d)

Zero

Which of the following statement is not correct?

(a)

Molecularity of a reaction cannot be fractional

(b)

Molecularity of a reaction cannot be more than three

(c)

Molecularity of a reaction can be zero

(d)

Molecularity is assigned for each elementary step of mechanism.

When the E_a of a reaction zero then the rate constant of the reaction is equal to _______.

(a)

2.303 K

(b)

\(\frac { K }{ 2.303 } \)

(c)

\(\left( { t }_{ \frac { 1 }{ 2 } } \right) \)

(d)

A

Analyses the equilibrium
HClO₄ +H₂O ⇌ H₃O+ \({ ClO }_{ 4 }^{ - }\)
and choose the correct statement.

(a)

H₃O⁺ is the conjugate base of H₂O

(b)

CIO₄^- is the conjugate base of HCIO₄

(c)

H₂O is the conjugate acid of H₃O⁺

(d)

HCIO₄ is the conjugate acid of H₃O⁺

Which one of the following is correct?

(a)

pH = H⁺

(b)

pH = -log₁₀ H⁺

(c)

pH = log₁₀H⁺

(d)

pH = 2log₁₀H⁺

Kohlraush's law is applied to calculate ________.

(a)

molar conductance at infinite dilution of a weak electrolyte

(b)

degree of dissociation of weak electrolyte

(c)

solubility of a sparingly soluble salt

(d)

all the above

The laws of electrolysis were enunciated first by

(a)

Dalton

(b)

Faraday

(c)

Kekule

(d)

Avogadro

The metals near the bottom of the electro chemical series are ______.

(a)

strong reducing agents

(b)

strong oxidising agents

(c)

weak reducing agents

(d)

weak oxidising agents

Low molar conductivity at high concentration is due to _______.

(a)

High attractive force between oppositively charged ions

(b)

Viscous drag due to greater solvation

(c)

Both High attractive force between oppositively charged ions and Viscous drag due to greater solvation

(d)

Neither High attractive force between oppositively charged ions and Viscous drag due to greater solvation

Which of the following is true regarding Freundlich adsorption isotherm equation?

(a)

Purely empirical

(b)

Valid only over a limited pressure range

(c)

The value of constants k and n varies with temperature

(d)

All the above

Which one is the correct factor that explains the increase of rate of reaction by a catalyst?

(a)

Shape selectivity

(b)

Particle size

(c)

Increase of free energy

(d)

Lowering of activation energy

For W/O emulsion, the principle emulsifying agent is _______.

(a)

proteins

(b)

synthetic soaps

(c)

lampblack

(d)

gums

Which one of the alcohol cannot be prepared by grignard reagent?

(a)

Methanol

(b)

ethanol

(c)

iso propyl alcohol

(d)

phenyl methanol

The reaction of Lucas reagent is fast with ______.

(a)

(CH₃)₃ COH

(b)

(CH₃)₂ CHOH

(c)

CH₃(CH₂)₂OH

(d)

CH₃CH₂OH

Which among the following has both local anaesthetic and antiseptic properties?

(a)

benzyl benzoate

(b)

phenol

(c)

benzyl alcohol

(d)

n-propyl alcohol

Baeyer's reagent is _______.

(a)

ZnlHg in Cone HCI

(b)

acidified K₂Cr₂O₇

(c)

cold alkaline KMnO₄

(d)

Sodium borohydride

The number of secondary alcoholic group in glycerol is _______.

(a)

1

(b)

2

(c)

3

(d)

0

Isomerism exhibited by ethylene glycol is ________.

(a)

position isomerism

(b)

chain isomerism

(c)

functional isomerism

(d)

both (a) and (c)

The test used to distinguish wish 1^o, 2^o and 3^o alcohol is ________.

(a)

Lucas test

(b)

Victor Meyer's

(c)

dehydrogenation

(d)

all the above

Intermolecular hydrogen bonds are not _______ present in.

(a)

CH₃COOH

(b)

C₂H₅OC₂H₅

(c)

CH₃CH₂OH

(d)

C₂H₅NH₂

Which among the carbonyl compounds cannot be prepared by Rosenmund reduction?

(a)

Ketones

(b)

Formaldehyde

(c)

Acetaldehyde

(d)

Both (a) and (b)

Hydrogenation of benzoyl chloride in the presence of Pd on BaSO₄ gives _______.

(a)

phenol

(b)

benzoic acid

(c)

benzyl alcohol

(d)

benzaldehyde

4 - methyl pent - 3 ene - 2 - one is the IUPAC name of _______.

(a)

mesitylene

(b)

mesityl oxide

(c)

phorone

(d)

chloretone

An example of pinacol is _______.

(a)

CH3-CH₂OH

(b)

\(\underset { \overset { | }{ \underset { \overset { | }{ { CH }_{ 2 }-OH } }{ CH-OH } } }{ { CH }_{ 2 }-OH } \)

(c)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ OH } }{ C } } -\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ OH } }{ C } } -{ CH }_{ 3 }\)

(d)

both (b) and (c)

The most acidic among the following is ________.

(a)

p- nitrophenol

(b)

p- hydroxybenzoicacid

(c)

o- hydroxy benzoic acid

(d)

p- toluic acid

Which among the following reactions will give a secondary amine?

(a)

\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{Br}_{2} / \mathrm{KOH}}{\longrightarrow}\)

(b)

\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)

(c)

\({ CH }_{ 3 }CN\xrightarrow [ Na/{ C }_{ 2 }{ H }_{ 5 }OH ]{ } \)

(d)

\(\mathrm{CH}_{3} \mathrm{NC} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)

Which among the following exists as zwitter ion?

(a)

sulphanilic acid

(b)

salicylic acid

(c)

acetanilide

(d)

all the above

The organic compound that undergoes carbylamine reaction is

(a)

(C₂H₅)₂NH

(b)

C₂H₅NH₂

(c)

(C₂H₅)₃ N

(d)

(C₂H₅)₄ N⁺L^-

CH₃NO₂+6[H] \(\underrightarrow { X? } \) CH₃NH₂+2H₂O. 'X' is

(a)

Sn/HCI

(b)

Zn/NH₄CI

(c)

Glucose + NaOH

(d)

Na₃A₅O₃/NaOH

The isomerism exhibited by 1-nitro butane and 1-nitro - 2- methyl propane is ______

(a)

chain

(b)

tautomerism

(c)

position

(d)

functional

Glucose is not oxidised to gluconic acid by

(a)

Br₂/H₂O

(b)

Fehling's solution

(c)

Tollen's reagent

(d)

Conc.HNO₃

The ultimate product of hydrolysis of starch in the presence of dilute acid is

(a)

dextrin

(b)

maltose

(c)

maltase

(d)

glucose

The formulation of dettol contains ______________.

(a)

chloroxylenol

(b)

terpineol

(c)

alcohol

(d)

all of these