40 ml of methane is completely burnt using 80 ml of oxygen at room temperature The volume of gas left after cooling to room temperature is _______.

(a)

40 ml CO₂ gas

(b)

40 ml CO₂ gas and 80 ml H₂O gas

(c)

60 ml CO₂ gas and 60 ml H₂O gas

(d)

120 ml CO₂ gas

1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is ______________.

(a)

0%

(b)

4.4%

(c)

16%

(d)

8.4%

Total number of electrons present in 1.7 g of ammonia is _____.

(a)

6.022\(\times\)10²³

(b)

\(\frac { 6.022\times { 10 }^{ 22 } }{ 1.7 } \quad \)

(c)

\(\frac { 6.022\times { 10 }^{ 24 } }{ 1.7 } \)

(d)

\(\frac { 6.022\times { 10 }^{ 23 } }{ 1.7 } \)

The energy of light of wavelength 45 nm is _____________.

(a)

6.67 x 10¹⁵J

(b)

6.67 x 10¹¹J

(c)

4.42 x 10^-18J

(d)

4.42 x 10^-15J

Two electrons occupying the same orbital are distinguished by ___________

(a)

azimuthal quantum number

(b)

spin quantum number

(c)

magnetic quantum number

(d)

 orbital quantum number

Electron density in the yz plane of 3d_xy orbital is ___________

(a)

zero

(b)

 0.50

(c)

0.75

(d)

 0.90

Assertion: Number of radial and angular nodes for 3p orbital are 1, 1 respectively.
Reason: Number of radial and angular nodes depends only on principal quantum number.

(a)

both assertion and reason are true and reason is the correct explanation of assertion.

(b)

both assertion and reason are true but reason is not the correct explanation of assertion.

(c)

assertion is true but reason is false

(d)

both assertion and reason are false

The electronic configuration of the elements A and B are 1s², 2s ²,2p⁶,3s² and 1s², 2s²,2p⁵ respectively. The formula of the ionic compound that can be formed between these elements is ___________

(a)

AB

(b)

AB₂

(c)

A₂B

(d)

none of the above

Which one of the following arrangements represent the correct order of least negative to most negative electron gain enthalpy _______________.

(a)

Al < O < C < Ca < F

(b)

Al < Ca < O < C < F

(c)

C < F < O < Al < Ca

(d)

Ca < Al < C < O < F

Which of the following statements about hydrogen is incorrect?

(a)

Hydrogen ion, H₃O⁺ exists freely in solution.

(b)

Dihydrogen acts as a reducing agent.

(c)

Hydrogen has three isotopes of which tritium is the most common.

(d)

Hydrogen never acts as cation in ionic salts.

Zeolite used to soften hardness of water is hydrated _____________

(a)

Sodium aluminium silicate

(b)

Calcium aluminium silicate

(c)

Zinc aluminium borate

(d)

Lithium aluminium hydride

Which of the following compounds will not evolve H₂ gas on reaction with alkali metals ?

(a)

ethanoic acid

(b)

ethanol

(c)

phenol

(d)

none of these

Which is the correct sequence of solubility of  carbonates of alkaline earth metals ?

(a)

BaCO₃ > SrCO₃ > CaCO₃ > MgCO₃

(b)

MgCO₃ > CaCO₃ > SrCO₃ > BaCO₃

(c)

CaCO₃ > BaCO₃ > SrCO₃ > BaCO₃

(d)

BaCO₃ > CaCO₃ > SrCO₃ > MaCO₃

Which of the following is the correct expression for the equation of state of van der Waals gas?

(a)

\(\left( P+\frac { a }{ { n }^{ 2 }{ V }^{ 2 } } \right) (V-nb)=nRT\)

(b)

\(\left( P+\frac { na }{ { n }^{ 2 }{ V }^{ 2 } } \right) (V-nb)=nRT\)

(c)

\(\left( P+\frac { { an }^{ 2 } }{ { V }^{ 2 } } \right) (V-nb)=nRT\)

(d)

\(\left( \frac { P+{ n }^{ 2 }{ a }^{ 2 } }{ { V }^{ 2 } } \right) (V-ab)=nRT\)

The table indicates the value of van der Waals constant 'a' in (dm³)² atm. mol^-2.

Gas	O2	N2	NH3	CH4
a	1.360	1.390	4.170	2.253

The gas which can be most easily liquefied is ______________

(a)

O₂

(b)

N₂

(c)

NH₃

(d)

CH₄

In an adiabatic process, which of the following is true ?

(a)

q = w

(b)

q = 0

(c)

ΔE = q

(d)

PΔV= 0

The bond dissociation energy of methane and ethane are 360 kJ mol^-1 and 620 kJ mol^-1 respectively. Then, the bond dissociation energy of C-C bond is ______________.

(a)

170 kJ mol^-1

(b)

50 kJ mol^-1

(c)

80 kJ mol^-1

(d)

220 kJ mol^-1

At a given temperature and pressure, the equilibrium constant values for the equilibria
\({ 3A }_{ 2 }+{ B }_{ 2 }+2C\overset { { K }_{ 1 } }{ \rightleftharpoons } { 2A }_{ 3 }BC\) and
\({ A }_{ 3 }BC\overset { { K }_{ 2 } }{ \rightleftharpoons } 3/2\left[ { A }_{ 2 } \right] +\frac { 1 }{ 2 } { B }_{ 2 }+C\)
The relation between K₁ and K₂ is ___________

(a)

\(K_1={1\over \sqrt{K_2}}\)

(b)

\(K_2=K_1^{-1/2}\)

(c)

\(K_1^2=2K_2\)

(d)

\({K_1\over 2}=K_2\)

In the equilibrium,
2A(g) ⇌ 2B(g) + C₂(g)
the equilibrium concentrations of A, B and C₂ at 400 K are 1\(\times\)10^–4 M, 2.0 \(\times\)10^–3 M, 1.5 \(\times\)10^–4 M respectively. The value of K_C for the equilibrium at 400 K is ________

(a)

0.06

(b)

0.09

(c)

0.62

(d)

3 x 10^-2

The equilibrium constants of the following reactions are:

N2 + 3H2 ⇌ 2NH3   :	K1
N2 + O2 ⇌ 2NO      :	K2
H2 + ½O2 ⇌ H2O   :	K3

The equilibrium constant (K) for the reaction ;
\({ 2NH }_{ 3 }+5/2{ O }_{ 2 }\overset { K }{ \rightleftharpoons } 2NO+{ 3H }_{ 2 }{ O },\) will be

(a)

\(K_2^3{K_3\over K_1}\)

(b)

\(K_1{K_3^3\over K_2}\)

(c)

\(K_2{K_3^3\over K_1}\)

(d)

\(K_2{K_3\over K_1}\)

Osometic pressure (p) of a solution is given by the relation ____________

(a)

 = nRT

(b)

V = nRT

(c)

\(\pi\)RT = n

(d)

none of these

The correct equation for the degree of an associating solute, 'n' molecules of which undergoes association in solution, is _____________

(a)

\(\alpha=\frac{n(i-1)}{n-1}\)

(b)

\(\alpha^2=\frac{n(1-i)}{(n-1)}\)

(c)

\(\alpha=\frac{n(i-1)}{1-\mathrm{n}}\)

(d)

\(\alpha=\frac{n(1-i)}{n(1-i)}\)

Which one of the following is diamagnetic ?

(a)

O₂

(b)

\(O_2^{2-}\)

(c)

\(O_2^+\)

(d)

None of these

IUPAC name of \({ CH }_{ 3 }-\overset { \underset { | }{ H } }{ \underset { \overset { | }{ { C }_{ 2 }{ H }_{ 5 } } }{ C } } -\overset { \underset { | }{ { C }_{ 4 }{ H }_{ 9 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } -{ CH }_{ 3 }\) is ________

(a)

3, 4, 4 – Trimethylheptane

(b)

2 – Ethyl –3, 3– dimethyl heptane

(c)

3, 4, 4 – Trimethyloctane

(d)

2 – Butyl -2 –methyl – 3 – ethyl-butane

The size of isoelectronic species- F^-, Ne and Na⁺ is affected by _____________

(a)

nuclear charge (Z)

(b)

valence principal quantum number (n)

(c)

electron-electron interaction in the outer orbitals

(d)

none of the factors becausetheir size is the same

Considering the elements F, CI, O and N, the correct order of their chemical reactivity in terms of oxidizing property is_____

(a)

F > CI > O > N

(b)

F > O > CI > N

(c)

CI > F > O > N

(d)

0 > F > N > CI

Which one of the following is used to build the beam pipe in accelerators?

(a)

Be

(b)

Ca

(c)

Mg

(d)

Sr

Beryllium is _________ in nature.

(a)

paramagnetic

(b)

diamagnetic

(c)

ferromagnetic

(d)

none

The compressibility factor for an ideal gas is ______________.

(a)

1.5

(b)

2

(c)

1

(d)

\(\propto \)

The rate of diffusion of a gas is ____________.

(a)

directly proportional to its density

(b)

directly proportional to its molecular mass

(c)

directly proportional to its square root of its molecular mass

(d)

inversely proportional to its square root of its molecular mass

How many structural isomers are possible for the molecular formula C₄H₈ which can undergo ozonolysis?

(a)

2

(b)

4

(c)

3

(d)

1

2-butene shows geometrical isomerism due to ________

(a)

Restricted rotation about double bond

(b)

Free rotation about double bond

(c)

Free rotation about single bond

(d)

Chiral carbon

Consider the following statements.
(i) The process of reduction using sodium in liquid ammonia is called as Birch reduction.
(ii) Birch reduction is stereospecific in reaction.
(iii) Alkynes can be reduced to cis - alkenes using Birch reduction. Which of the above statement is/are correct?

(a)

(i) and (ii)

(b)

(ii) and (iii)

(c)

(iii) only

(d)

(ii) only

Fine the odd one out:

(a)

Benzene

(b)

Ethane

(c)

Ethene

(d)

Propyne

\(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}_{2}+\mathrm{H}_{2} \stackrel{\mathrm{Pt}}{\longrightarrow} ?\)

(a)

CH₃ - CH₂ - CH₂ - CH₃

(b)

CH₃ CH₂ CH₃

(c)

CH₃ CH = CH₂

(d)

\({ CH }_{ 3 }-\underset { \overset { | }{ { CH }_{ 3 } } }{ C } H-{ CH }_{ 2 }\)

The type of substitution reaction that takes place when methane, is treated with Cl₂ in presence of light is _____. 

(a)

ionic

(b)

electrophilic

(c)

nucleophilic

(d)

radical

C₆ - C₁₂ are used as _____.

(a)

lubricants

(b)

petrollium jelly

(c)

diesel fuels

(d)

gasoline

The colour of Br₂ / H₂O is _____.

(a)

orange

(b)

green

(c)

reddish yellow

(d)

reddish brown

Propylene is treated with ozone to give _____.

(a)

HCHO + CH₃CHO

(b)

HCHO + CH₃COOH

(c)

CH₃COCH₃

(d)

CH₃COCH₃ + CH₃COOH

Polystyrene is used in _____.

(a)

foam cups

(b)

toys

(c)

flexible items

(d)

yars

In alkynes the % of s - Character in sp hybrid orbital is ____.

(a)

50%

(b)

55%

(c)

33%

(d)

25%

According to Huckel's rule presence of _______ electrons in the ring, which is explained by Aromaticity.

(a)

(4n+2)

(b)

(4n+3)\(\sigma\)

(c)

(4n+2)\(\pi\)

(d)

(2n+1)\(\pi\)

Benzene is in involved in _______ reaction.

(a)

Nucleophilic substitution

(b)

electrophilic substitution

(c)

Elimination

(d)

None

______ shaped polynuclear hydrocarbon are much more toxic & carcinogenic.

(a)

T

(b)

H

(c)

A

(d)

L

The best reagent for converting an alcohol into the corresponding chloride is

(a)

PCl₃

(b)

PCl₅

(c)

SOCl₂

(d)

HCl/ZnCl₂

Which of the following is secondary alkyl halide?

(a)

Iso butyl chloride

(b)

Isopentyl chloride

(c)

Neopentyl chloride

(d)

Isopropyl chloride

Which one of the following react with gringnard reagent followed by hydrolysis will yield primary alcohol?

(a)

CH₃CHO

(b)

HCHO

(c)

CH₃COCH₃

(d)

CO₂

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}+\stackrel{\mathrm{Warm}}{\longrightarrow} ?\)

(a)

C₆H₅I

(b)

C₆H₅Kl

(c)

C₆H₆

(d)

C₆H₅OH

Identify the component of photechemical smog which is not the common one.

(a)

Acrolein

(b)

Ozone

(c)

Peroxyacetyl nitrate

(d)

CFCs

'DO' value of a water sample is 6 ppm. Calculate the weight of dissolved oxygen present in 100 kg of water sample?

(a)

0.9 g

(b)

0.6 g

(c)

0.1 g

(d)

0.5 g