1708 + Interview Questions in Chemistry Page 3 InterviewSolution

101.	In alkaline medium, glycine predominantly exists as/in a/an:
Answer» In alkaline medium, glycine predominantly exists as/in a/an:

Discussion

102.	Antifertity drug is
Answer» Antifertity drug is

Discussion

103.	Predict the pinacol-pinacolone rearrangement product of:
Answer» Predict the pinacol-pinacolone rearrangement product of:

Discussion

104.	The silicate anion given above in a mineral has K+,Ca2+ and Al3+ cations in 2:1:2. Number of moles of Al3+ ions per 4 moles of mineral is
Answer» The silicate anion given above in a mineral has $K^{+}, C a^{2 +}$ and $A l^{3 +}$ cations in 2:1:2. Number of moles of $A l^{3 +}$ ions per 4 moles of mineral is

Discussion

105.	By which reagent alkyne converts to cis-alkene?i.e. C6H11−C≡C−CH3R⟶cis-alkene:
Answer» By which reagent alkyne converts to cis-alkene? i.e. $C_{6} H_{11} - C \equiv C - C H_{3} R ⟶ cis-alkene$ :

Discussion

106.	If Ka=1.8×10−5, calculate the degree of hydrolysis of 0.1 M solution of sodium acetate at 25∘C:
Answer» If $K_{a} = 1.8 \times 10^{- 5}$ , calculate the degree of hydrolysis of 0 $.1 M$ solution of sodium acetate at $25^{\circ} C$ :

Discussion

107.	The product of the reaction sequence that follows is:
Answer» The product of the reaction sequence that follows is:

Discussion

108.	Which of the following is an example of condensation polymer?
Answer» Which of the following is an example of condensation polymer?

Discussion

109.	What volume of 6 M HCl and 2 M HCl should be mixed to get two litre of 3 M HCl?
Answer» What volume of 6 M HCl and 2 M HCl should be mixed to get two litre of 3 M HCl?

Discussion

110.	If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:
Answer» If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:

Discussion

111.	What is the compressibility factor for H2 which behaves as a real gas?
Answer» What is the compressibility factor for $H_{2}$ which behaves as a real gas?

Discussion

112.	Which one of the following statement(s) is incorrect about order of reaction?
Answer» Which one of the following statement(s) is incorrect about order of reaction?

Discussion

113.	Which of the following is/are correct for group 14 elements?
Answer» Which of the following is/are correct for group 14 elements?

Discussion

114.	Identify the wrong statements in the following
Answer» Identify the wrong statements in the following

Discussion

115.	In a F.C.C. arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is
Answer» In a F.C.C. arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is

Discussion

116.	What volume of 0.50 M CaCl2 solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?
Answer» What volume of 0.50 M $C a C l_{2}$ solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?

Discussion

117.	Which of the following sequences represents the increasing order of the polarizing power of the cationic species?
Answer» Which of the following sequences represents the increasing order of the polarizing power of the cationic species?

Discussion

118.	Which of the following are homocyclic aromatic compounds?
Answer» Which of the following are homocyclic aromatic compounds?

Discussion

119.	In the following, the most stable conformation of n-butane is:
Answer» In the following, the most stable conformation of n-butane is:

Discussion

120.	One mole of an ideal monoatomic gas expands reversibly and adiabatically from a volume of x litre to 14 litre at 27∘ C. Then the value of x will be:[Final temperature =189 K and Cv=32 R ]
Answer» One mole of an ideal monoatomic gas expands reversibly and adiabatically from a volume of $x$ litre to 14 litre at $27^{\circ} C$ . Then the value of $x$ will be:[Final temperature $= 189 K$ and $C_{v} = \frac{3}{2} R$ ]

Discussion

121.	The correct sequence of reagents for the following conversion will be:
Answer» The correct sequence of reagents for the following conversion will be:

Discussion

122.	Let, the average molar mass of air is 24.9 g. An open vessel at 27 oC is heated upto t oC until 1/3rd of the air measured at final temperature excapes out. The rms velocity of air molecules at t oC is: (Take R=8.3 JK−1mol−1)
Answer» Let, the average molar mass of air is $24.9 g$ . An open vessel at $27^{o} C$ is heated upto $t^{o} C$ until $1 / 3^{r d}$ of the air measured at final temperature excapes out. The rms velocity of air molecules at $t^{o} C$ is: (Take $R = 8.3 J K^{- 1} m o l^{- 1}$ )

Discussion

123.	The solubility product of a salt having general formula MX2, in water is 4×10−12. The concentration (mol L−1) of M2+ ions in the aqueous solution of the salt is:
Answer» The solubility product of a salt having general formula $M X_{2},$ in water is $4 \times 10^{- 12}$ . The concentration $({mol L}^{- 1})$ of $M^{2 +}$ ions in the aqueous solution of the salt is:

Discussion

124.	The pressure of H2 required to make the potential of H2 electrode zero in pure water at 298 K is
Answer» The pressure of $H_{2}$ required to make the potential of $H_{2}$ electrode zero in pure water at 298 K is

Discussion

125.	Gauche Conformation of butane is:
Answer» Gauche Conformation of butane is:

Discussion

126.	The B—F bond length is the shortest in which of the following species?
Answer» The $B — F$ bond length is the shortest in which of the following species?

Discussion

127.	Cracking of Ethane gives a mixture of
Answer» Cracking of Ethane gives a mixture of

Discussion

128.	The correct order regarding the electronegativity of hybrid orbitals of carbon is?
Answer» The correct order regarding the electronegativity of hybrid orbitals of carbon is?

Discussion

129.	Incorrect order of stability is:
Answer» Incorrect order of stability is:

Discussion

130.	What is the chemical composition of 'slag' formed during smelting in the extraction of copper?
Answer» What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

Discussion

131.	On heating strongly, Lead (II) nitrate yields:
Answer» On heating strongly, Lead (II) nitrate yields:

Discussion

132.	The cell reaction for the given cell is spontaneous if Pt,Cl2(P1)(g)\|Cl−(1.0M)\|\|Cl−(2M)\|Cl2(P2)(g),Pt
Answer» The cell reaction for the given cell is spontaneous if $P t, C l_{2_{(P_{1})}} (g) \| C l^{-} (1.0 M) \| \| C l^{-} (2 M) \| C l_{2_{(P_{2})}} (g), P t$

Discussion

133.	Compounds A, B and C, respectively are:
Answer» Compounds A, B and C, respectively are:

Discussion

134.	How many layers are adsorbed in chemical adsorption?
Answer» How many layers are adsorbed in chemical adsorption?

Discussion

135.	Consider the following reaction and choose the possible product(s):
Answer» Consider the following reaction and choose the possible product(s):

Discussion

136.	The second order Bragg diffraction of X-rays with l =1.0 A0 froma set of parallel planes in a metal occurs at an angle of 600.The distance between the scattering planes in the crystal is
Answer» The second order Bragg diffraction of X-rays with l =1.0 A⁰froma set of parallel planes in a metal occurs at an angle of 60⁰.The distance between the scattering planes in the crystal is

Discussion

137.	2 moles of acetaldehyde are catalyzed by aluminium ethoxide to yield one mole of ethyl acetate. This is:
Answer» 2 moles of acetaldehyde are catalyzed by aluminium ethoxide to yield one mole of ethyl acetate. This is:

Discussion

138.	Two glass bulbs A and B are connected by a very small tube of negligible volume having a stop cock. Volume of bulb A is 100 cm3 and it contains some gas. Bulb B is empty on opening the stop cock, the pressure dropped by 60%. The volume of Bulb B must be____.
Answer» Two glass bulbs A and B are connected by a very small tube of negligible volume having a stop cock. Volume of bulb A is 100 cm³ and it contains some gas. Bulb B is empty on opening the stop cock, the pressure dropped by 60%. The volume of Bulb B must be____.

Discussion

139.	Colour of dipositive Lanthanum (II) cation is due to:
Answer» Colour of dipositive Lanthanum (II) cation is due to:

Discussion

140.	The electronic configuration of a dipositive metal M2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be
Answer» The electronic configuration of a dipositive metal $M^{2 +}$ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be

Discussion

141.	0.02 M solution of H2A has pH=4. If Ka1 for the acid is 5×10−7 M, the concentration of HA− ion in the solution would be :
Answer» $0.02 M$ solution of $H_{2} A$ has $p H = 4$ . If $K_{a_{1}}$ for the acid is $5 \times 10^{- 7} M$ , the concentration of $H A^{-}$ ion in the solution would be :

Discussion

142.	The radii of F,F−,O and O2− are in the order of
Answer» The radii of $F, F^{-}, O$ and $O^{2 -}$ are in the order of

Discussion

143.	The correct order of increasing C−O bond length in CO,CO2−3,CO2 and CO+ is:
Answer» The correct order of increasing $C - O$ bond length in $C O, C O_{3}^{2 -}, C O_{2}$ and $C O^{+}$ is:

Discussion

144.	A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are respectively(IIT-JEE, 1987)
Answer» A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are respectively (IIT-JEE, 1987)

Discussion

145.	Match the polymers given in Column I with the preferred mode of polymerisation followed by their monomers.Column IColumn II(i) Nylon-6(a) free radical polymerisation(ii) PVC(b) Ziegler-Natta plymerisation or coordination polymerisation(iii) HDP(c) Anionic polymerisation(d) Condensation polymerisation
Answer» Match the polymers given in Column I with the preferred mode of polymerisation followed by their monomers. $\begin{matrix} C o l u m n I & C o l u m n I I (i) Nylon-6 & (a) free radical polymerisation (i i) PVC & (b) Ziegler-Natta plymerisation or coordination polymerisation (i i i) HDP & (c) Anionic polymerisation (d) Condensation polymerisation \end{matrix}$

Discussion

146.	In which of the following coordination entities, the magnitude of Δ∘ [CFSE in octahedral field] will be maximum?
Answer» In which of the following coordination entities, the magnitude of $Δ_{\circ}$ [CFSE in octahedral field] will be maximum?

Discussion

147.	Nitric acid is the most important oxi-acid formed by nitrogen. It is one of the major industrial chemicals and is widely used. Nitric acid is manufactured by the catalytic oxidation of ammonia that is known as Ostwald Process which can be represented by sequence of reactions shown below4NH3+5O2(g)Catalyst−−−−−→Pt/Rh4NO(g)+6H2O(g) ...(i)2NO(g)+O2(g)1120 K−−−−→2NO2(g) ...(ii) 3NO2(g)+H2O(l)→2HNO3(aq)+NO(g) ...(iii)The aqueous nitric acid obtained by this method can be concenteated by distillation to 68.5% by weight. Further concentration to 98% acid can be achieved by dehydration with concentrated sulphuric acid.If 180 L of water completely reacts with NO2 produced to form nitric acid according to the above reactions, then the volume of air required at STP containing 20% of NO2 is:(density of water is 1 g/mL)
Answer» Nitric acid is the most important oxi-acid formed by nitrogen. It is one of the major industrial chemicals and is widely used. Nitric acid is manufactured by the catalytic oxidation of ammonia that is known as Ostwald Process which can be represented by sequence of reactions shown below $4 N H_{3} + 5 O_{2} (g) C a t a l y s t - ---- \to P t / R h 4 N O (g) + 6 H_{2} O (g) . . . (i)$ $2 N O (g) + O_{2} (g) 1120 K - --- \to 2 N O_{2} (g) . . . (i i)$ $3 N O_{2} (g) + H_{2} O (l) \to 2 H N O_{3} (a q) + N O (g) . . . (i i i)$ The aqueous nitric acid obtained by this method can be concenteated by distillation to $68.5 %$ by weight. Further concentration to $98 %$ acid can be achieved by dehydration with concentrated sulphuric acid. If $180 L$ of water completely reacts with $N O_{2}$ produced to form nitric acid according to the above reactions, then the volume of air required at STP containing $20 %$ of $N O_{2}$ is: (density of water is 1 g/mL)

Discussion

148.	Which of the following is not an antibiotic
Answer» Which of the following is not an antibiotic

Discussion

149.	In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow.Case 1: In practice shots he always hits the apple. In this case the archer is:
Answer» In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow. Case 1: In practice shots he always hits the apple. In this case the archer is:

149.

In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow.Case 1: In practice shots he always hits the apple. In this case the archer is:

Answer»

In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow.

Case 1: In practice shots he always hits the apple. In this case the archer is:

Discussion

150.	Which compound would give 5-keto-2-methyl hexanal upon ozonolysis?
Answer» Which compound would give 5-keto-2-methyl hexanal upon ozonolysis?

Discussion

Explore topic-wise InterviewSolutions in .

In alkaline medium, glycine predominantly exists as/in a/an:

Antifertity drug is

Predict the pinacol-pinacolone rearrangement product of:

The silicate anion given above in a mineral has K+,Ca2+ and Al3+ cations in 2:1:2. Number of moles of Al3+ ions per 4 moles of mineral is

By which reagent alkyne converts to cis-alkene?i.e. C6H11−C≡C−CH3R⟶cis-alkene:

If Ka=1.8×10−5, calculate the degree of hydrolysis of 0.1 M solution of sodium acetate at 25∘C:

The product of the reaction sequence that follows is:

Which of the following is an example of condensation polymer?

What volume of 6 M HCl and 2 M HCl should be mixed to get two litre of 3 M HCl?

If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:

What is the compressibility factor for H2 which behaves as a real gas?

Which one of the following statement(s) is incorrect about order of reaction?

Which of the following is/are correct for group 14 elements?

Identify the wrong statements in the following

In a F.C.C. arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is

What volume of 0.50 M CaCl2 solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?

Which of the following sequences represents the increasing order of the polarizing power of the cationic species?

Which of the following are homocyclic aromatic compounds?

In the following, the most stable conformation of n-butane is:

One mole of an ideal monoatomic gas expands reversibly and adiabatically from a volume of x litre to 14 litre at 27∘ C. Then the value of x will be:[Final temperature =189 K and Cv=32 R ]

The correct sequence of reagents for the following conversion will be:

Let, the average molar mass of air is 24.9 g. An open vessel at 27 oC is heated upto t oC until 1/3rd of the air measured at final temperature excapes out. The rms velocity of air molecules at t oC is: (Take R=8.3 JK−1mol−1)

The solubility product of a salt having general formula MX2, in water is 4×10−12. The concentration (mol L−1) of M2+ ions in the aqueous solution of the salt is:

The pressure of H2 required to make the potential of H2 electrode zero in pure water at 298 K is

Gauche Conformation of butane is:

The B—F bond length is the shortest in which of the following species?

Cracking of Ethane gives a mixture of

The correct order regarding the electronegativity of hybrid orbitals of carbon is?

Incorrect order of stability is:

What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

On heating strongly, Lead (II) nitrate yields:

The cell reaction for the given cell is spontaneous if Pt,Cl2(P1)(g)|Cl−(1.0M)||Cl−(2M)|Cl2(P2)(g),Pt

Compounds A, B and C, respectively are:

How many layers are adsorbed in chemical adsorption?

Consider the following reaction and choose the possible product(s):

The second order Bragg diffraction of X-rays with l =1.0 A0 froma set of parallel planes in a metal occurs at an angle of 600.The distance between the scattering planes in the crystal is

2 moles of acetaldehyde are catalyzed by aluminium ethoxide to yield one mole of ethyl acetate. This is:

Two glass bulbs A and B are connected by a very small tube of negligible volume having a stop cock. Volume of bulb A is 100 cm3 and it contains some gas. Bulb B is empty on opening the stop cock, the pressure dropped by 60%. The volume of Bulb B must be____.

Colour of dipositive Lanthanum (II) cation is due to:

The electronic configuration of a dipositive metal M2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be

0.02 M solution of H2A has pH=4. If Ka1 for the acid is 5×10−7 M, the concentration of HA− ion in the solution would be :

The radii of F,F−,O and O2− are in the order of

The correct order of increasing C−O bond length in CO,CO2−3,CO2 and CO+ is:

A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are respectively(IIT-JEE, 1987)

In which of the following coordination entities, the magnitude of Δ∘ [CFSE in octahedral field] will be maximum?

Which of the following is not an antibiotic

Which compound would give 5-keto-2-methyl hexanal upon ozonolysis?