46295 + Interview Questions in Chemistry

1.	The sketch shows the plot of Z vs P for 1 mole of a hypothetical gas at three distinct temperatures: Boyle's temperature is the temperature at which a gas shows ideal behaviour over a pressure range in the low pressure region. Boyle's temperature (Tb)=aRb. If a plot is obtained at temperatures well below Boyle's temperature, then the curve will show a negative deviation in the low pressure region and a positive deviation in the high pressure region. In the first figure, in the plot at 500 K,Z changes from 2 to 2.2 as the pressure varies from 1000 atm to 1200 atm (high pressure). The value of bRT will be:
Answer» The sketch shows the plot of Z vs P for 1 mole of a hypothetical gas at three distinct temperatures: Boyle's temperature is the temperature at which a gas shows ideal behaviour over a pressure range in the low pressure region. Boyle's temperature $(T_{b}) = \frac{a}{R b}$ . If a plot is obtained at temperatures well below Boyle's temperature, then the curve will show a negative deviation in the low pressure region and a positive deviation in the high pressure region. In the first figure, in the plot at $500 K, Z$ changes from 2 to 2.2 as the pressure varies from 1000 atm to $1200 atm$ (high pressure). The value of $\frac{b}{R T}$ will be:

Discussion

2.	If the binding energy per nucleon in Li7 and He4 nuclei are 5.60 MeV and 7.06 MeV , then what is the energy of the reaction 3Li7 + 1H1 = 2 2He4 ?
Answer» If the binding energy per nucleon in Li⁷ and He⁴ nuclei are 5.60 MeV and 7.06 MeV , then what is the energy of the reaction ₃Li⁷ + ₁H¹ = 2 ₂He⁴ ?

Discussion

3.	The inert gas that is abundantly found in the atmosphere is:
Answer» The inert gas that is abundantly found in the atmosphere is:

Discussion

4.	Carbon atom shows sp2 - hybridization in compound A and B. A decolourises alkaline KMnO4 solution, where as B cannot. A and B are
Answer» Carbon atom shows $s p^{2}$ - hybridization in compound A and B. A decolourises alkaline $K M n O_{4}$ solution, where as B cannot. A and B are

Discussion

5.	Write the structure of n-methylethanamine.
Answer» Write the structure of n-methylethanamine.

Discussion

6.	Minimum equivalent conductance in fused state is shown by
Answer» Minimum equivalent conductance in fused state is shown by

Discussion

7.	The incorrect order of melting points among the following is:
Answer» The incorrect order of melting points among the following is:

Discussion

8.	Carbon black, used in making printer’s ink, is obtained by decomposition of
Answer» Carbon black, used in making printer’s ink, is obtained by decomposition of

Discussion

9.	Which of the following has highest boiling point?
Answer» Which of the following has highest boiling point?

Discussion

10.	If the solution of CuSO4 in which copper rod is immersed is diluted to 100 times, the standard reduction potential
Answer» If the solution of CuSO₄ in which copper rod is immersed is diluted to 100 times, the standard reduction potential

Discussion

11.	Condition favorable for SN2 reaction is -
Answer» Condition favorable for $S N^{2}$ reaction is -

Discussion

12.	Which of the following is the most non-metallic element?
Answer» Which of the following is the most non-metallic element?

Discussion

13.	Choose the word which is most OPPOSITE in meaning to the word as used in the passage: Significance
Answer» Choose the word which is most OPPOSITE in meaning to the word as used in the passage: Significance

13.

Choose the word which is most OPPOSITE in meaning to the word as used in the passage: Significance

Answer»

Choose the word which is most OPPOSITE in meaning to the word as used in the passage:

Significance

Discussion

14.	A certain diatomic molecule, AB has dipole moment 1.6 D and the internuclear distance is 100 pm. The percentage of electronic charge existing on more electronegative atom is
Answer» A certain diatomic molecule, $A B$ has dipole moment $1.6 D$ and the internuclear distance is $100 p m$ . The percentage of electronic charge existing on more electronegative atom is

Discussion

15.	Which of the following are converted to an aromatic species on the loss of hydride ion?
Answer» Which of the following are converted to an aromatic species on the loss of hydride ion?

Discussion

16.	The type of hybridization found in ethyne molecule is:
Answer» The type of hybridization found in ethyne molecule is:

Discussion

17.	Acetic acid is treated with Ca(OH)2) and the product so obtained is subjected to dry distillation. The final product is
Answer» Acetic acid is treated with $C a (O H)_{2})$ and the product so obtained is subjected to dry distillation. The final product is

Discussion

18.	Which are the first chapter that I start from PHYSICAl, ORGANIC AND INORGANIC CHEMISTRY from byjus course of class 11?
Answer» Which are the first chapter that I start from PHYSICAl, ORGANIC AND INORGANIC CHEMISTRY from byjus course of class 11?

Discussion

19.	How can you explain higher stability of BCl3 as compared to TlCl3?
Answer» How can you explain higher stability of $B C l_{3}$ as compared to $T l C l_{3}$ ?

Discussion

20.	The correct order of magnetic moment (spin only values in B.M.) among is: (Atomic no.s : Mn=25; Fe=26; Co=27)
Answer» The correct order of magnetic moment (spin only values in B.M.) among is: (Atomic no.s : $M n = 25; F e = 26; C o = 27$ )

Discussion

21.	SO2−3+S2−+I2(Calculated amounts)⟶X+I− What is X in the balanced equation
Answer» $S O_{3}^{2 -} + S^{2 -} + I_{2} (C a l c u l a t e d a m o u n t s) ⟶ X + I^{-}$ What is X in the balanced equation

Discussion

22.	Pusa Hydrogel, developed by Indian Agricultural Research institute, New Delhi are meant to
Answer» Pusa Hydrogel, developed by Indian Agricultural Research institute, New Delhi are meant to

Discussion

23.	The compound(s) which generate(s) N2 gas upon thermal decomposition below 300oC is (are):
Answer» The compound(s) which generate(s) $N_{2}$ gas upon thermal decomposition below $300^{o} C$ is (are):

Discussion

24.	The species in which the central atom uses SP2 hybrid orbitals in its bonding is
Answer» The species in which the central atom uses $S P^{2}$ hybrid orbitals in its bonding is

Discussion

25.	Not balanced reaction Br−+BrO−3→Br2 in acidic medium shows comproportionation to form Bromine. After balancing, x= no. of moles of Br2 produced, y= no. of moles of BrO−3 used. The value of xy=
Answer» Not balanced reaction $B r^{-} + B r O_{3}^{-} \to B r_{2}$ in acidic medium shows comproportionation to form Bromine. After balancing, x= no. of moles of $B r_{2}$ produced, y= no. of moles of $B r O_{3}^{-}$ used. The value of $\frac{x}{y} =$

Discussion

26.	Which one among the following molecule is chiral?
Answer» Which one among the following molecule is chiral?

Discussion

27.	When calcium carbide reacts with N2 at 1000 oC, the compound formed is:
Answer» When calcium carbide reacts with $N_{2}$ at $1000^{o} C$ , the compound formed is:

Discussion

28.	Which thing is discovered At last in Atom? & Which thing is discovered at first. In atom?
Answer» Which thing is discovered At last in Atom? & Which thing is discovered at first. In atom?

Discussion

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

Discussion

30.	The boiling point of 0.2 mol kg−1solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case ?
Answer» The boiling point of 0.2 mol $k g^{- 1}$ solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case ?

Discussion

31.	The order of reactivity of different halogens towards halogenation of alkanes is:
Answer» The order of reactivity of different halogens towards halogenation of alkanes is:

Discussion

32.	The reaction of cyanamide (NH2CN) with dioxygen was carried out in a bomb calorimeter and ΔU was found to be −742.7 kJmol−1 at 298 K. Calculate the enthalpy change for the reaction at 298 K NH2CN(s)+32O2(g)→N2(g)+CO2(g)+H2O(l)
Answer» The reaction of cyanamide $(N H_{2} C N)$ with dioxygen was carried out in a bomb calorimeter and $Δ U$ was found to be $- 742.7 {kJmol}^{- 1}$ at $298 K$ . Calculate the enthalpy change for the reaction at $298 K$ $N H_{2} C N (s) + \frac{3}{2} O_{2} (g) \to N_{2} (g) + C O_{2} (g) + H_{2} O (l)$

Discussion

33.	Among the following species identify the isostructural pairs : NH3,NO−3,BF3,H3O+,HN3
Answer» Among the following species identify the isostructural pairs : $N H_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, H N_{3}$

33.

Among the following species identify the isostructural pairs : NH3,NO−3,BF3,H3O+,HN3

Answer»

Among the following species identify the isostructural pairs :

$N H_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, H N_{3}$

Discussion

34.	Pressure of 1 g of an ideal gas A at 27∘C is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at same temperature the pressure becomes 3 bar. Find a relationship between their molecular masses.
Answer» Pressure of 1 g of an ideal gas A at $27^{\circ} C$ is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at same temperature the pressure becomes 3 bar. Find a relationship between their molecular masses.

Discussion

35.	In the given reaction the product formed is
Answer» In the given reaction the product formed is

35.

In the given reaction the product formed is

Answer»

In the given reaction the product formed is

Discussion

36.	Explain why The dipole moment of chlorobezene is lower than that of cyclohexyl chloride ? alkyl halides, though polar, are immiscible with water ? Grignard reagents should be prepared under anhydrous conditions ?
Answer» Explain why The dipole moment of chlorobezene is lower than that of cyclohexyl chloride ? alkyl halides, though polar, are immiscible with water ? Grignard reagents should be prepared under anhydrous conditions ?

36.

Explain why The dipole moment of chlorobezene is lower than that of cyclohexyl chloride ? alkyl halides, though polar, are immiscible with water ? Grignard reagents should be prepared under anhydrous conditions ?

Answer»

Explain why

The dipole moment of chlorobezene is lower than that of cyclohexyl chloride ?

alkyl halides, though polar, are immiscible with water ?

Grignard reagents should be prepared under anhydrous conditions ?

Discussion

37.	Which of the following solutions will alter the pH of the solution on dilution?
Answer» Which of the following solutions will alter the pH of the solution on dilution?

Discussion

38.	Question 61 How can you remove the hard calcium carbonate layer of the egg without damaging its semipermeable membrane? Can this egg be inserted into a bottle with a narrow neck without distorting its shape? Explain the process involved.
Answer» Question 61 How can you remove the hard calcium carbonate layer of the egg without damaging its semipermeable membrane? Can this egg be inserted into a bottle with a narrow neck without distorting its shape? Explain the process involved.

Discussion

39.	De-Broglie wavelength of an electron travelling with speed equal to 1% of the speed of light is?
Answer» De-Broglie wavelength of an electron travelling with speed equal to $1$ % of the speed of light is?

Discussion

40.	In the following reaction, product ‘A’ is:
Answer» In the following reaction, product ‘A’ is:

Discussion

41.	Name the structure of silicates in which three oxygen atoms of [SiO4]− are shared:
Answer» Name the structure of silicates in which three oxygen atoms of $[S i O_{4}]^{-}$ are shared:

Discussion

42.	Which of the following will produce p-type semiconductor?
Answer» Which of the following will produce p-type semiconductor?

Discussion

43.	Identify the (D) in the reaction:
Answer» Identify the (D) in the reaction:

Discussion

44.	Be2C+H2O→Be(OH)2+x CaC2+H2O→Ca(OH)2+y then x and y are respectively:
Answer» $B e_{2} C + H_{2} O \to B e (O H)_{2} + x$ $C a C_{2} + H_{2} O \to C a (O H)_{2} + y$ then x and y are respectively:

Discussion

45.	Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot The only correct combination for the last electron of Sc is: (Atomic number of Sc is 21)
Answer» Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot The only correct combination for the last electron of Sc is: (Atomic number of Sc is 21)

45.

Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot The only correct combination for the last electron of Sc is: (Atomic number of Sc is 21)

Answer»

Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot

The only correct combination for the last electron of Sc is: (Atomic number of Sc is 21)

Discussion

46.	Match the following ComplexStructure and magnetic moment(A)[Ag(CN)2]−(1)Square planer and 1.73BM(B)[Cu(CN)4]−3(2)Linear and Zero(C)[Cu(CN)6]−3(3)Octahedral and zero(D)[Cu(NH3)4]+2(4)Tetrahedral and zero(E)(5)Octahedral and 1.73 BM
Answer» Match the following $\begin{matrix} Complex & Structure and magnetic moment (A) [A g (C N)_{2}]^{-} & (1) Square planer and 1.73 B M (B) [C u (C N)_{4}]^{- 3} & (2) Linear and Zero (C) [C u (C N)_{6}]^{- 3} & (3) Octahedral and zero (D) [C u (N H_{3})_{4}]^{+ 2} & (4) Tetrahedral and zero (E) & (5) Octahedral and 1.73 BM \end{matrix}$

46.

Match the following ComplexStructure and magnetic moment(A)[Ag(CN)2]−(1)Square planer and 1.73BM(B)[Cu(CN)4]−3(2)Linear and Zero(C)[Cu(CN)6]−3(3)Octahedral and zero(D)[Cu(NH3)4]+2(4)Tetrahedral and zero(E)(5)Octahedral and 1.73 BM

Answer»

Match the following

$\begin{matrix} Complex & Structure and magnetic moment (A) [A g (C N)_{2}]^{-} & (1) Square planer and 1.73 B M (B) [C u (C N)_{4}]^{- 3} & (2) Linear and Zero (C) [C u (C N)_{6}]^{- 3} & (3) Octahedral and zero (D) [C u (N H_{3})_{4}]^{+ 2} & (4) Tetrahedral and zero (E) & (5) Octahedral and 1.73 BM \end{matrix}$

Discussion

47.	If x,y,z are in GP,then using properties of determinants,show that Δ=∣∣∣∣px+yxypy+zyz0px+ypy+z∣∣∣∣=0,where x≠y≠z and p is any real number.
Answer» If x,y,z are in GP,then using properties of determinants,show that $Δ = ∣ ∣∣ ∣ \begin{matrix} p x + y & x & y p y + z & y & z 0 & p x + y & p y + z \end{matrix} ∣ ∣∣ ∣$ =0,where $x \neq y \neq z$ and p is any real number.

Discussion

48.	Identify the electrophilic centre in CH3CHO
Answer» Identify the electrophilic centre in CH3CHO

Discussion

49.	What will be the product of the given reaction: Ph−OH+C2H5IC2H5ONa−−−−−−−−−−→anhyd. C2H5OH (correct answer +2, wrong answer -0.5)
Answer» What will be the product of the given reaction: $P h - O H + C_{2} H_{5} I C_{2} H_{5} O N a - --------- \to anhyd. C_{2} H_{5} O H$ (correct answer +2, wrong answer -0.5)

Discussion

50.	How many elements would be future would there any probability to have an element with atomic number 1000?
Answer» How many elements would be future would there any probability to have an element with atomic number 1000?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If the binding energy per nucleon in Li7 and He4 nuclei are 5.60 MeV and 7.06 MeV , then what is the energy of the reaction 3Li7 + 1H1 = 2 2He4 ?

The inert gas that is abundantly found in the atmosphere is:

Carbon atom shows sp2 - hybridization in compound A and B. A decolourises alkaline KMnO4 solution, where as B cannot. A and B are

Write the structure of n-methylethanamine.

Minimum equivalent conductance in fused state is shown by

The incorrect order of melting points among the following is:

Carbon black, used in making printer’s ink, is obtained by decomposition of

Which of the following has highest boiling point?

If the solution of CuSO4 in which copper rod is immersed is diluted to 100 times, the standard reduction potential

Condition favorable for SN2 reaction is -

Which of the following is the most non-metallic element?

Choose the word which is most OPPOSITE in meaning to the word as used in the passage: Significance

A certain diatomic molecule, AB has dipole moment 1.6 D and the internuclear distance is 100 pm. The percentage of electronic charge existing on more electronegative atom is

Which of the following are converted to an aromatic species on the loss of hydride ion?

The type of hybridization found in ethyne molecule is:

Acetic acid is treated with Ca(OH)2) and the product so obtained is subjected to dry distillation. The final product is

Which are the first chapter that I start from PHYSICAl, ORGANIC AND INORGANIC CHEMISTRY from byjus course of class 11?

How can you explain higher stability of BCl3 as compared to TlCl3?

The correct order of magnetic moment (spin only values in B.M.) among is: (Atomic no.s : Mn=25; Fe=26; Co=27)

SO2−3+S2−+I2(Calculated amounts)⟶X+I− What is X in the balanced equation

Pusa Hydrogel, developed by Indian Agricultural Research institute, New Delhi are meant to

The compound(s) which generate(s) N2 gas upon thermal decomposition below 300oC is (are):

The species in which the central atom uses SP2 hybrid orbitals in its bonding is

Not balanced reaction Br−+BrO−3→Br2 in acidic medium shows comproportionation to form Bromine. After balancing, x= no. of moles of Br2 produced, y= no. of moles of BrO−3 used. The value of xy=

Which one among the following molecule is chiral?

When calcium carbide reacts with N2 at 1000 oC, the compound formed is:

Which thing is discovered At last in Atom? & Which thing is discovered at first. In atom?

The major product of the following reaction is:

The boiling point of 0.2 mol kg−1solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case ?

The order of reactivity of different halogens towards halogenation of alkanes is:

The reaction of cyanamide (NH2CN) with dioxygen was carried out in a bomb calorimeter and ΔU was found to be −742.7 kJmol−1 at 298 K. Calculate the enthalpy change for the reaction at 298 K NH2CN(s)+32O2(g)→N2(g)+CO2(g)+H2O(l)

Among the following species identify the isostructural pairs : NH3,NO−3,BF3,H3O+,HN3

Pressure of 1 g of an ideal gas A at 27∘C is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at same temperature the pressure becomes 3 bar. Find a relationship between their molecular masses.

In the given reaction the product formed is

Explain why The dipole moment of chlorobezene is lower than that of cyclohexyl chloride ? alkyl halides, though polar, are immiscible with water ? Grignard reagents should be prepared under anhydrous conditions ?

Which of the following solutions will alter the pH of the solution on dilution?

Question 61 How can you remove the hard calcium carbonate layer of the egg without damaging its semipermeable membrane? Can this egg be inserted into a bottle with a narrow neck without distorting its shape? Explain the process involved.

De-Broglie wavelength of an electron travelling with speed equal to 1% of the speed of light is?

In the following reaction, product ‘A’ is:

Name the structure of silicates in which three oxygen atoms of [SiO4]− are shared:

Which of the following will produce p-type semiconductor?

Identify the (D) in the reaction:

Be2C+H2O→Be(OH)2+x CaC2+H2O→Ca(OH)2+y then x and y are respectively:

Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot The only correct combination for the last electron of Sc is: (Atomic number of Sc is 21)

Match the following ComplexStructure and magnetic moment(A)[Ag(CN)2]−(1)Square planer and 1.73BM(B)[Cu(CN)4]−3(2)Linear and Zero(C)[Cu(CN)6]−3(3)Octahedral and zero(D)[Cu(NH3)4]+2(4)Tetrahedral and zero(E)(5)Octahedral and 1.73 BM

If x,y,z are in GP,then using properties of determinants,show that Δ=∣∣∣∣px+yxypy+zyz0px+ypy+z∣∣∣∣=0,where x≠y≠z and p is any real number.

Identify the electrophilic centre in CH3CHO

What will be the product of the given reaction: Ph−OH+C2H5IC2H5ONa−−−−−−−−−−→anhyd. C2H5OH (correct answer +2, wrong answer -0.5)

How many elements would be future would there any probability to have an element with atomic number 1000?