46295 + Interview Questions in Chemistry

1.	Bordeaux mixture consists of lime and ___:
Answer» Bordeaux mixture consists of lime and ___:

Discussion

2.	Name the shape selective catalyst used in the petroleum industry.
Answer» Name the shape selective catalyst used in the petroleum industry.

Discussion

3.	Cis-trans isomerism is shown by:
Answer» Cis-trans isomerism is shown by:

Discussion

4.	Which of the following is the weakest Bronsted base?
Answer» Which of the following is the weakest Bronsted base?

Discussion

5.	How many plane of symmetry does the CH4 molecule contain?
Answer» How many plane of symmetry does the $C H_{4}$ molecule contain?

Discussion

6.	Major product of the following reaction is
Answer» Major product of the following reaction is

6.

Major product of the following reaction is

Answer»

Major product of the following reaction is

Discussion

7.	Molarity of a solution that has 50 milli moles of a solute dissolved in 10 mL of solution is .
Answer» Molarity of a solution that has $50 m i l l i m o l e s$ of a solute dissolved in $10 m L$ of solution is .

Discussion

8.	In the reactions of water with F2, water acts as
Answer» In the reactions of water with $F_{2}$ , water acts as

Discussion

9.	Ions given out by Carnallite in solution are
Answer» Ions given out by Carnallite in solution are

Discussion

10.	What is the correct IUPAC name of the compound? CH2=CH−CH2−C≡ CH?
Answer» What is the correct IUPAC name of the compound? $C H_{2} = C H - C H_{2} - C \equiv C H$ ?

10.

What is the correct IUPAC name of the compound? CH2=CH−CH2−C≡ CH?

Answer»

What is the correct IUPAC name of the compound?

$C H_{2} = C H - C H_{2} - C \equiv C H$ ?

Discussion

11.	In a first order reaction, the concentration of the reactant is reduced to 12.5% in one hour. When was it half completed?
Answer» In a first order reaction, the concentration of the reactant is reduced to $12.5 %$ in one hour. When was it half completed?

Discussion

12.	Zn+2H+→Zn2++H2 Half – life period is independent of concentration of constant pH. For the constant concentration of Zn, rate becomes 100 times when pH is decreased from 3 to 2. Hence,
Answer» $Z n + 2 H^{+} \to Z n^{2 +} + H_{2}$ Half – life period is independent of concentration of constant pH. For the constant concentration of Zn, rate becomes 100 times when pH is decreased from 3 to 2. Hence,

12.

Zn+2H+→Zn2++H2 Half – life period is independent of concentration of constant pH. For the constant concentration of Zn, rate becomes 100 times when pH is decreased from 3 to 2. Hence,

Answer»

$Z n + 2 H^{+} \to Z n^{2 +} + H_{2}$

Half – life period is independent of concentration of constant pH. For the constant concentration of Zn, rate becomes 100 times when pH is decreased from 3 to 2. Hence,

Discussion

13.	Is there any change in the hybridisation of B and N atoms as a result of the following reaction? BF3+NH3→F3B.NH3
Answer» Is there any change in the hybridisation of B and N atoms as a result of the following reaction? $B F_{3} + N H_{3} \to F_{3} B . N H_{3}$

13.

Is there any change in the hybridisation of B and N atoms as a result of the following reaction? BF3+NH3→F3B.NH3

Answer»

Is there any change in the hybridisation of B and N atoms as a result of the following reaction?

$B F_{3} + N H_{3} \to F_{3} B . N H_{3}$

Discussion

14.	The electronic configurations of the elements X, Y, Z and J are given below. Which element has the highest metallic character? X=2, 8, 4 Y=2, 8, 8 Z=2, 8, 8, 1 J=2, 8, 8, 7
Answer» The electronic configurations of the elements $X, Y, Z$ and $J$ are given below. Which element has the highest metallic character? $X = 2, 8, 4$ $Y = 2, 8, 8$ $Z = 2, 8, 8, 1$ $J = 2, 8, 8, 7$

Discussion

15.	Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is(γ=CpCv)
Answer» Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as $V^{q}$ , where $V$ is the volume of the gas. The value of q is $(γ = \frac{C_{p}}{C_{v}})$

Discussion

16.	The equilibrium constant for the reaction given below is 2.0×10−7 at 300 K. Calculate the standard free energy change for the reaction. PCl5(g)⇌PCl3(g)+Cl2(g) Also, calculate the standard entropy change if, ΔH∘=28.40 kJ mol−1
Answer» The equilibrium constant for the reaction given below is $2.0 \times 10^{- 7}$ at 300 K. Calculate the standard free energy change for the reaction. $P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$ Also, calculate the standard entropy change if, $Δ H^{\circ} = 28.40 k J m o l^{- 1}$

Discussion

17.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

Discussion

18.	For a 3s− orbital Ψ(3s)=19√3(1a0)32(6−6σ+σ2)e−σ2;where σ=2r.Z3a0 What is the maxium radial distance of node from nucleus?
Answer» For a $3 s -$ orbital $Ψ (3 s) = \frac{1}{9 \sqrt{3}} {(\frac{1}{a_{0}})}^{\frac{3}{2}} (6 - 6 σ + σ^{2}) e^{\frac{- σ}{2}}; where σ = \frac{2 r . Z}{3 a_{0}}$ What is the maxium radial distance of node from nucleus?

Discussion

19.	For a reaction, N2O5⟶2NO2+12O2 Given: −d[N2O5]dt=k1[N2O5] d[NO2]dt=k2[N2O5] d[O2]dt=k3[N2O5] The relation between k1,k2 and k3 are:
Answer» For a reaction, $N_{2} O_{5} ⟶ 2 N O_{2} + \frac{1}{2} O_{2}$ Given: $\frac{- d [N_{2} O_{5}]}{d t} = k_{1} [N_{2} O_{5}]$ $\frac{d [N O_{2}]}{d t} = k_{2} [N_{2} O_{5}]$ $\frac{d [O_{2}]}{d t} = k_{3} [N_{2} O_{5}]$ The relation between $k_{1}, k_{2}$ and $k_{3}$ are:

Discussion

20.	Small air bubble of radius r is found to form at a depth of H from the open surface of the liquid contained in a beaker. If S is the surface tension and ρ , the density of the liquid and ρ0, the atmospheric pressure the pressure inside the bubble is
Answer» Small air bubble of radius r is found to form at a depth of H from the open surface of the liquid contained in a beaker. If S is the surface tension and $ρ$ , the density of the liquid and $ρ_{0}$ , the atmospheric pressure the pressure inside the bubble is

Discussion

21.	In the Cannizzaro's reaction given below, The slowest step is:
Answer» In the Cannizzaro's reaction given below, The slowest step is:

21.

In the Cannizzaro's reaction given below, The slowest step is:

Answer»

In the Cannizzaro's reaction given below,

The slowest step is:

Discussion

22.	When MnO2 is fused with KOH, a coloured compound is formed. The compound and its colour are:
Answer» When $M n O_{2}$ is fused with $K O H$ , a coloured compound is formed. The compound and its colour are:

Discussion

23.	A certain amount of ideal monoatomic gas undergoes a process given by UV=K where U is the internal energy of the gas, V is volume and K is a constant. The molar specific heat of the gas for the process will be
Answer» A certain amount of ideal monoatomic gas undergoes a process given by $U V = K$ where $U$ is the internal energy of the gas, $V$ is volume and $K$ is a constant. The molar specific heat of the gas for the process will be

Discussion

24.	1.A method of estimating size of a molecule is: 2. A method of estimating mass of a molecule is: 3. A method of estimating mass of a heavenly body is:
Answer» 1.A method of estimating size of a molecule is: 2. A method of estimating mass of a molecule is: 3. A method of estimating mass of a heavenly body is:

24.

1.A method of estimating size of a molecule is: 2. A method of estimating mass of a molecule is: 3. A method of estimating mass of a heavenly body is:

Answer»

1.A method of estimating size of a molecule is:

2. A method of estimating mass of a molecule is:

3. A method of estimating mass of a heavenly body is:

Discussion

25.	Why does the ketone acts as nucleophile in aldol condensation of acetaldehyde and acetone?
Answer» Why does the ketone acts as nucleophile in aldol condensation of acetaldehyde and acetone?

Discussion

26.	Which of the following is/are correct regarding the distribution of speed of N2 and CO2 at definite temperature?
Answer» Which of the following is/are correct regarding the distribution of speed of $N_{2}$ and $C O_{2}$ at definite temperature?

Discussion

27.	Among the following graphs, the number of graphs which represent variation of x/m with temprature(T) for adsorption is
Answer» Among the following graphs, the number of graphs which represent variation of $x / m$ with temprature(T) for adsorption is

Discussion

28.	The wave length of first member of Balmer series of a hydrogen atom is nearly (The value of Rydberg constant is 1.08 × 107m−1)
Answer» The wave length of first member of Balmer series of a hydrogen atom is nearly (The value of Rydberg constant is $1.08 \times 10^{7} m^{- 1})$

Discussion

29.	1 mole of an ideal gas A(Cv,m=3R) and 2 mole of an ideal gas B are (CV,m=32R) taken in a container and expanded reversible and adiabatically from 1 litre to 4l itre starting from initial temperature of 320 K. ΔE or ΔU for the process is:
Answer» $1 m o l e$ of an ideal gas $A (C_{v, m} = 3 R)$ and $2 m o l e$ of an ideal gas $B$ are $(C_{V, m} = \frac{3}{2} R)$ taken in a container and expanded reversible and adiabatically from $1 l i t r e t o 4 l i t r e$ starting from initial temperature of $320 K$ . $Δ E$ or $Δ U$ for the process is:

Discussion

30.	Explain the specific heat capacity of water.
Answer» Explain the specific heat capacity of water.

Discussion

31.	What is benzoylation?
Answer» What is benzoylation?

Discussion

32.	At a certain temperature, equilibrium constant Kc=4×10−2 for the reaction N2(g)+O2(g)⇌2NO(g) If we take 1.5 mol of NO and 2 mol each of N2 and O2 in 5 L vessel, what would be the equilibrium concentration of NO (in mol/L)?
Answer» At a certain temperature, equilibrium constant $K_{c} = 4 \times 10^{- 2}$ for the reaction $N_{2} (g) + O_{2} (g) ⇌ 2 N O (g)$ If we take $1.5 m o l$ of NO and $2 m o l$ each of $N_{2} a n d O_{2}$ in $5 L$ vessel, what would be the equilibrium concentration of $N O$ (in $m o l / L$ )?

Discussion

33.	CH2=CH−CH=CH2+HCl(1 mole)→Product(s) Number of chiral atom in kinetically favoured product of the given reaction is:
Answer» $C H_{2} = C H - C H = C H_{2} + H C l (1 mole) \to Product(s)$ Number of chiral atom in kinetically favoured product of the given reaction is:

Discussion

34.	The correct order of hydration energy is:
Answer» The correct order of hydration energy is:

Discussion

35.	Why boiling point of cis isomer is greater than trans isomer?
Answer» Why boiling point of cis isomer is greater than trans isomer?

Discussion

36.	How to calculate how many ppie ppie and ppie dpie bonds in an particular compound. Please explain with example
Answer» How to calculate how many ppie ppie and ppie dpie bonds in an particular compound. Please explain with example

Discussion

37.	10 ml of a compound containing N and O is mixed with 30 ml of H2 to produce H2O and 10 ml N2. Molecular formula of compound if both reactants reacts completely N20 NO2 N2O3 N2O5
Answer» 10 ml of a compound containing N and O is mixed with 30 ml of H2 to produce H2O and 10 ml N2. Molecular formula of compound if both reactants reacts completely N20 NO2 N2O3 N2O5

Discussion

38.	difference between oil in water and water in oil emulsion. how they can be distinguished.
Answer» difference between oil in water and water in oil emulsion. how they can be distinguished.

Discussion

39.	Can everthing be proved in physics?
Answer» Can everthing be proved in physics?

Discussion

40.	The second order Bragg diffraction of x-rays with λ=1.00 ∘A from a set of parallel planes in metal occurs at an angle 60∘. The distance between the scattering planes in the crystal is
Answer» The second order Bragg diffraction of x-rays with $λ = 1.00 \circ A$ from a set of parallel planes in metal occurs at an angle $60^{\circ}$ . The distance between the scattering planes in the crystal is

Discussion

41.	Account for the following Ko2 is paramagnetic LiI iodide is more soluble than KI in ethanol
Answer» Account for the following Ko2 is paramagnetic LiI iodide is more soluble than KI in ethanol

Discussion

42.	Hydrogen and oxygen combine to form two compounds the hydrogen content in one is 5.93 % and in other it is 11.2% show that this explain law of multiple proportion
Answer» Hydrogen and oxygen combine to form two compounds the hydrogen content in one is 5.93 % and in other it is 11.2% show that this explain law of multiple proportion

Discussion

43.	What is the significance of adding sulphuric acid in brown ring test for nitrates?
Answer» What is the significance of adding sulphuric acid in brown ring test for nitrates?

Discussion

44.	Why only ortho and para isomers can be easily separated by electrophilic substitution and not the meta isomers ?
Answer» Why only ortho and para isomers can be easily separated by electrophilic substitution and not the meta isomers ?

Discussion

45.	The halogen which is most reactive in halogenations of alkene under sunlight is
Answer» The halogen which is most reactive in halogenations of alkene under sunlight is

Discussion

46.	Explain why chlorine can be converted into chloride ion more easily as compared to 2 fluoride ion from fluorine.
Answer» Explain why chlorine can be converted into chloride ion more easily as compared to 2 fluoride ion from fluorine.

Discussion

47.	How many geometrical isomers are possible for the following compound?
Answer» How many geometrical isomers are possible for the following compound?

47.

How many geometrical isomers are possible for the following compound?

Answer»

How many geometrical isomers are possible for the following compound?

Discussion

48.	When Cl2 gas reacts with hot and concentrated potassium hydroxide solution, the oxidation number of chlorine changes from:
Answer» When $C l_{2}$ gas reacts with hot and concentrated potassium hydroxide solution, the oxidation number of chlorine changes from:

Discussion

49.	14 g of CO at 27° C is mixed with 16 g of O2 at 47°C . The temperature of mixture is ( vibration mode neglected )
Answer» 14 g of CO at 27° C is mixed with 16 g of O2 at 47°C . The temperature of mixture is ( vibration mode neglected )

Discussion

50.	The compound AgF2 is an unstable compound. However, if formed, the compound acts as a very strong oxidizing agent. Why?
Answer» The compound $A g F_{2}$ is an unstable compound. However, if formed, the compound acts as a very strong oxidizing agent. Why?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Bordeaux mixture consists of lime and ___:

Name the shape selective catalyst used in the petroleum industry.

Cis-trans isomerism is shown by:

Which of the following is the weakest Bronsted base?

How many plane of symmetry does the CH4 molecule contain?

Major product of the following reaction is

Molarity of a solution that has 50 milli moles of a solute dissolved in 10 mL of solution is .

In the reactions of water with F2, water acts as

Ions given out by Carnallite in solution are

What is the correct IUPAC name of the compound? CH2=CH−CH2−C≡ CH?

In a first order reaction, the concentration of the reactant is reduced to 12.5% in one hour. When was it half completed?

Zn+2H+→Zn2++H2 Half – life period is independent of concentration of constant pH. For the constant concentration of Zn, rate becomes 100 times when pH is decreased from 3 to 2. Hence,

Is there any change in the hybridisation of B and N atoms as a result of the following reaction? BF3+NH3→F3B.NH3

The electronic configurations of the elements X, Y, Z and J are given below. Which element has the highest metallic character? X=2, 8, 4 Y=2, 8, 8 Z=2, 8, 8, 1 J=2, 8, 8, 7

Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is(γ=CpCv)

The equilibrium constant for the reaction given below is 2.0×10−7 at 300 K. Calculate the standard free energy change for the reaction. PCl5(g)⇌PCl3(g)+Cl2(g) Also, calculate the standard entropy change if, ΔH∘=28.40 kJ mol−1

The major product of the following reaction is:

For a 3s− orbital Ψ(3s)=19√3(1a0)32(6−6σ+σ2)e−σ2;where σ=2r.Z3a0 What is the maxium radial distance of node from nucleus?

For a reaction, N2O5⟶2NO2+12O2 Given: −d[N2O5]dt=k1[N2O5] d[NO2]dt=k2[N2O5] d[O2]dt=k3[N2O5] The relation between k1,k2 and k3 are:

Small air bubble of radius r is found to form at a depth of H from the open surface of the liquid contained in a beaker. If S is the surface tension and ρ , the density of the liquid and ρ0, the atmospheric pressure the pressure inside the bubble is

In the Cannizzaro's reaction given below, The slowest step is:

When MnO2 is fused with KOH, a coloured compound is formed. The compound and its colour are:

A certain amount of ideal monoatomic gas undergoes a process given by UV=K where U is the internal energy of the gas, V is volume and K is a constant. The molar specific heat of the gas for the process will be

1.A method of estimating size of a molecule is: 2. A method of estimating mass of a molecule is: 3. A method of estimating mass of a heavenly body is:

Why does the ketone acts as nucleophile in aldol condensation of acetaldehyde and acetone?

Which of the following is/are correct regarding the distribution of speed of N2 and CO2 at definite temperature?

Among the following graphs, the number of graphs which represent variation of x/m with temprature(T) for adsorption is

The wave length of first member of Balmer series of a hydrogen atom is nearly (The value of Rydberg constant is 1.08 × 107m−1)

1 mole of an ideal gas A(Cv,m=3R) and 2 mole of an ideal gas B are (CV,m=32R) taken in a container and expanded reversible and adiabatically from 1 litre to 4l itre starting from initial temperature of 320 K. ΔE or ΔU for the process is:

Explain the specific heat capacity of water.

What is benzoylation?

At a certain temperature, equilibrium constant Kc=4×10−2 for the reaction N2(g)+O2(g)⇌2NO(g) If we take 1.5 mol of NO and 2 mol each of N2 and O2 in 5 L vessel, what would be the equilibrium concentration of NO (in mol/L)?

CH2=CH−CH=CH2+HCl(1 mole)→Product(s) Number of chiral atom in kinetically favoured product of the given reaction is:

The correct order of hydration energy is:

Why boiling point of cis isomer is greater than trans isomer?

How to calculate how many ppie ppie and ppie dpie bonds in an particular compound. Please explain with example

10 ml of a compound containing N and O is mixed with 30 ml of H2 to produce H2O and 10 ml N2. Molecular formula of compound if both reactants reacts completely N20 NO2 N2O3 N2O5

difference between oil in water and water in oil emulsion. how they can be distinguished.

Can everthing be proved in physics?

The second order Bragg diffraction of x-rays with λ=1.00 ∘A from a set of parallel planes in metal occurs at an angle 60∘. The distance between the scattering planes in the crystal is

Account for the following Ko2 is paramagnetic LiI iodide is more soluble than KI in ethanol

Hydrogen and oxygen combine to form two compounds the hydrogen content in one is 5.93 % and in other it is 11.2% show that this explain law of multiple proportion

What is the significance of adding sulphuric acid in brown ring test for nitrates?

Why only ortho and para isomers can be easily separated by electrophilic substitution and not the meta isomers ? ​​​​​​

The halogen which is most reactive in halogenations of alkene under sunlight is

Explain why chlorine can be converted into chloride ion more easily as compared to 2 fluoride ion from fluorine.

How many geometrical isomers are possible for the following compound?

When Cl2 gas reacts with hot and concentrated potassium hydroxide solution, the oxidation number of chlorine changes from:

14 g of CO at 27° C is mixed with 16 g of O2 at 47°C . The temperature of mixture is ( vibration mode neglected )

The compound AgF2 is an unstable compound. However, if formed, the compound acts as a very strong oxidizing agent. Why?

Why only ortho and para isomers can be easily separated by electrophilic substitution and not the meta isomers ?