46295 + Interview Questions in Chemistry

1.	Does the rate of the reaction increases with a ZERO order reaction or is constant?
Answer» Does the rate of the reaction increases with a ZERO order reaction or is constant?

Discussion

2.	A hydrogen atom in its ground state is irradiated by light of wavelength 970Å. Taking hc/e = 1.237 x 10−6eV m and the ground state energy of hydrogen atom as - 13.6 eV, the number number of lines present in the emission spectrum is:___
Answer» A hydrogen atom in its ground state is irradiated by light of wavelength 970Å. Taking hc/e = 1.237 x $10^{- 6}$ eV m and the ground state energy of hydrogen atom as - 13.6 eV, the number number of lines present in the emission spectrum is:___

Discussion

3.	Calculate the molality of 12.5% w/w sulphuric acid?
Answer» Calculate the molality of 12.5% w/w sulphuric acid?

Discussion

4.	The compound that does not liberate CO2, on treatment with aqueous NaHCO3solution , is:
Answer» The compound that does not liberate CO₂, on treatment with aqueous NaHCO₃solution , is:

4.

The compound that does not liberate CO2, on treatment with aqueous NaHCO3solution , is:

Answer»

The compound that does not liberate CO₂, on treatment with aqueous NaHCO₃solution , is:

Discussion

5.	YO2/Ag←−−−−300∘CCH2=CH2S2Cl2−−−→X A. X is war gas B. X is thiol C. Y is hetero cyclic, aromatic D. Y is isomer of ethanal Correct statements are
Answer» Y $O_{2} / A g \leftarrow --- - 300^{\circ} C C H_{2} = C H_{2} S_{2} C l_{2} - -- \to X$ A. X is war gas B. X is thiol C. Y is hetero cyclic, aromatic D. Y is isomer of ethanal Correct statements are

5.

YO2/Ag←−−−−300∘CCH2=CH2S2Cl2−−−→X A. X is war gas B. X is thiol C. Y is hetero cyclic, aromatic D. Y is isomer of ethanal Correct statements are

Answer»

Y $O_{2} / A g \leftarrow --- - 300^{\circ} C C H_{2} = C H_{2} S_{2} C l_{2} - -- \to X$

A. X is war gas B. X is thiol

C. Y is hetero cyclic, aromatic D. Y is isomer of ethanal

Correct statements are

Discussion

6.	Identify the Quantity which is a State function out of the following:
Answer» Identify the Quantity which is a State function out of the following:

Discussion

7.	This question and the next one appeared in the in the linked comprehension format. Let's give them a shot. An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below: SCHEME: M1, Q and R, respectively are
Answer» This question and the next one appeared in the in the linked comprehension format. Let's give them a shot. An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below: SCHEME: M1, Q and R, respectively are

Discussion

8.	The human blood is buffered by ____
Answer» The human blood is buffered by ____

Discussion

9.	An alkene 'X' of the formula C4H8 on ozonolysis produced acetone and formaldehyde. The product obtained when 'X' reacts with HBr is
Answer» An alkene 'X' of the formula $C_{4} H_{8}$ on ozonolysis produced acetone and formaldehyde. The product obtained when 'X' reacts with HBr is

Discussion

10.	Which is wrong about nucleic Acid?
Answer» Which is wrong about nucleic Acid?

Discussion

11.	For a single step reaction to the type A + 2B → E + 2F
Answer» For a single step reaction to the type A + 2B → E + 2F

Discussion

12.	One mole of PCl5(g) dissociates and attains equilibrium after t seconds at 27∘C: PCl5(g)⇋PCl3(g)+Cl2(g) At equillibrium, the vapour density is found to be 100 and the volume of the system is 10.425 L at 27∘C. The total pressure of the system at equilibrium will be atm. R=0.082 Latmmol−1K−1
Answer» One mole of $P C l_{5} (g)$ dissociates and attains equilibrium after t seconds at $27^{\circ} C$ : $P C l_{5} (g) ⇋ P C l_{3} (g) + C l_{2} (g)$ At equillibrium, the vapour density is found to be 100 and the volume of the system is 10.425 L at $27^{\circ} C$ . The total pressure of the system at equilibrium will be atm. $R = 0.082 L a t m m o l^{- 1} K^{- 1}$

Discussion

13.	Each C-atom in diamond is - hybridized
Answer» Each C-atom in diamond is - hybridized

Discussion

14.	On hydrolysis diborane produce?
Answer» On hydrolysis diborane produce?

Discussion

15.	The Ksp of Ag2CrO4 is 1.1 × 10−12 at 298K. The solubility (in mol/L) of Ag2CrO4 in a 0.1 M AgNO3 solution is
Answer» The $K_{s p} o f A g_{2} C r O_{4} i s 1.1 \times 10^{- 12} a t 298 K .$ The solubility (in $m o l / L$ ) of $A g_{2} C r O_{4}$ in a $0.1 M A g N O_{3}$ solution is

Discussion

16.	Which of the following fluoride does not exist?
Answer» Which of the following fluoride does not exist?

Discussion

17.	An electron travels with a velocity of x ms−1. For a proton to have the same de-Broglie wavelength, the velocity will be approximately:
Answer» An electron travels with a velocity of $x m s^{- 1}$ . For a proton to have the same de-Broglie wavelength, the velocity will be approximately:

Discussion

18.	Consider the following phenols
Answer» Consider the following phenols

Discussion

19.	In the conversion of Br2→BrO−3, the oxidation state of bromine changes from
Answer» In the conversion of $B r_{2} \to B r O_{3}^{-},$ the oxidation state of bromine changes from

Discussion

20.	How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+3
Answer» How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? $C r_{2} O_{7}^{2 -}$ $⟶$ $C r^{+ 3}$

20.

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+3

Answer»

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing?

$C r_{2} O_{7}^{2 -}$ $⟶$ $C r^{+ 3}$

Discussion

21.	The highest molar conductivity will be in case of
Answer» The highest molar conductivity will be in case of

Discussion

22.	2 moles of Ne gas and 5 moles of He gas, both samples have an average velocity of 7×102 m/s. Find the average translational kinetic energy per mole of the given gas mixture (in joules). Report your answer as ′X′ where X= (Average translational KE in joules) ×0.002. The reported answer should be rounded to the nearest integer.
Answer» 2 moles of $N e$ gas and 5 moles of $H e$ gas, both samples have an average velocity of $7 \times 10^{2} m/s$ . Find the average translational kinetic energy per mole of the given gas mixture (in joules). Report your answer as $^{'} X^{'}$ where $X =$ (Average translational KE in joules) $\times 0.002$ . The reported answer should be rounded to the nearest integer.

Discussion

23.	Geometrical isomerism in coordination compounds is usually exhibited by
Answer» Geometrical isomerism in coordination compounds is usually exhibited by

Discussion

24.	A stable C can be obtained through unstable nuclides A nad B. the half life period for conversion A→C is T and that for conversion B→C is 2T. Initially a sample contains N nuclides of A, N nuclides of B and no nuclides of C. If the no. of nuclides of species C is equal to (27/16) N after time t=nT, then n is
Answer» A stable C can be obtained through unstable nuclides A nad B. the half life period for conversion $A \to C$ is $T$ and that for conversion $B \to C$ is $2 T$ . Initially a sample contains N nuclides of A, N nuclides of B and no nuclides of C. If the no. of nuclides of species C is equal to (27/16) N after time $t = n T$ , then $n$ is

Discussion

25.	Which of the following has a high polarising power
Answer» Which of the following has a high polarising power

25.

Which of the following has a high polarising power

Answer»

Which of the following has a high polarising power

Discussion

26.	1 mole of an ideal gas, initially at 400 K and 10 atm is first expanded at constant pressure till the volume is doubled. Then the gas is made to undergo an isochoric process, in which its temperature is found to decrease. In the last step, the gas was compressed reversibly and adiabatically to its initial state. Determine the net work involved in this cyclic process (in terms of R). Given, CV for gas =1.5 R, (4)−1/3=0.63. If \|W\|=2 R×z, what is the value of z?
Answer» 1 mole of an ideal gas, initially at 400 K and 10 atm is first expanded at constant pressure till the volume is doubled. Then the gas is made to undergo an isochoric process, in which its temperature is found to decrease. In the last step, the gas was compressed reversibly and adiabatically to its initial state. Determine the net work involved in this cyclic process (in terms of R). Given, $C_{V}$ for gas $= 1.5 R, (4)^{- 1 / 3} = 0.63$ . If $\| W \| = 2 R \times z$ , what is the value of $z$ ?

Discussion

27.	Westron is a highly toxic halogen derivative liquid used as fumigant and insecticide formed the reaction of acetylene with the halogen that is
Answer» Westron is a highly toxic halogen derivative liquid used as fumigant and insecticide formed the reaction of acetylene with the halogen that is

Discussion

28.	On the basis of data given below predict which of the following gases shows the least adsorption on a definite amount of charcoal? GasCO2SO2CH4H2Critical T (K)30463019033
Answer» On the basis of data given below predict which of the following gases shows the least adsorption on a definite amount of charcoal? $\begin{matrix} Gas & C O_{2} & S O_{2} & C H_{4} & H_{2} Critical T (K) & 304 & 630 & 190 & 33 \end{matrix}$

Discussion

29.	The smog is essentially caused by presence of
Answer» The smog is essentially caused by presence of

Discussion

30.	The compound that does not give a blue colour in lassaigne's test is
Answer» The compound that does not give a blue colour in lassaigne's test is

Discussion

31.	DeltaH and DeltaS for the reaction Ag2O(s) → 2Ag(s)+12 O2(g) are 30.56 kJ mol−1 and 66.00 JK−1mol−1 respectively, the temperature at which the free energy change for the reaction will be zero is:
Answer» $D e l t a H$ and $D e l t a S$ for the reaction $A g_{2} O_{(s)}$ $\to$ $2 A g_{(s)}$ + $\frac{1}{2}$ $O_{2 (g)}$ are 30.56 kJ $m o l^{- 1}$ and 66.00 $J K^{- 1} m o l^{- 1}$ respectively, the temperature at which the free energy change for the reaction will be zero is:

Discussion

32.	The Eo reduction for Cu/CuS electrode is −x. Find the value of x. (Given: Ksp for CuS=8.0×10−36;Eo(Cu/Cu2+)=−0.34 V;log 2=0.3;2.303RTF=0.06)
Answer» The $E^{o}$ reduction for $C u / C u S$ electrode is $- x$ . Find the value of $x$ . (Given: $K_{s p}$ for $C u S = 8.0 \times 10^{- 36}; E_{(C u / C u^{2 +})}^{o} = - 0.34 V; l o g 2 = 0.3; \frac{2.303 R T}{F} = 0.06$ )

Discussion

33.	The diamagnetic species is
Answer» The diamagnetic species is

Discussion

34.	In which case, geometry of the molecule is pyramidal?
Answer» In which case, geometry of the molecule is pyramidal?

Discussion

35.	Hybridisation of alkyl carbanion is
Answer» Hybridisation of alkyl carbanion is

Discussion

36.	Which of the following will show maximum -I effect?
Answer» Which of the following will show maximum -I effect?

Discussion

37.	Kf of 1,4-dioxane is 4.9 mol-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:
Answer» K_f of 1,4-dioxane is 4.9 mol^-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:

Discussion

38.	What are KSH and HEM reagents and what are their functions?
Answer» What are KSH and HEM reagents and what are their functions?

Discussion

39.	Which one of the following reactions is a redox reaction?
Answer» Which one of the following reactions is a redox reaction?

Discussion

40.	Slaked lime is another name given to
Answer» Slaked lime is another name given to

Discussion

41.	The resonating structures for N2O are given below : Choose the correct decreasing order of stablity:
Answer» The resonating structures for $N_{2} O$ are given below : Choose the correct decreasing order of stablity:

Discussion

42.	The order of metallic character of elements A, B, C and D is A < B < C < D What is the order of their electronegative character?
Answer» The order of metallic character of elements A, B, C and D is A < B < C < D What is the order of their electronegative character?

Discussion

43.	The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes 1.80 cm apart and 5.4 cm2 area was found to be 32 ohm. Calculate ∧eq.
Answer» The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes 1.80 cm apart and 5.4 $c m^{2}$ area was found to be 32 ohm. Calculate $\land_{e q}$ .

Discussion

44.	A capillary tube of length 10 cm is dipped 3 cm inside water. The water rises up to 5 cm in the capillary. If the same tube is dipped 6 cm inside water, the water will rise in capillary up to the height
Answer» A capillary tube of length 10 cm is dipped 3 cm inside water. The water rises up to 5 cm in the capillary. If the same tube is dipped 6 cm inside water, the water will rise in capillary up to the height

Discussion

45.	The specific conductance of saturated solution of AgCl is found to be 1.86×10−6ohm−1cm−1 and that of water is 6×10−8ohm−1cm−1. The solubility of AgCl given that ∧∘AgCl = 137.2ohm−1cm2eq−1 is
Answer» The specific conductance of saturated solution of AgCl is found to be $1.86 \times 10^{- 6} o h m^{- 1} c m^{- 1}$ and that of water is $6 \times 10^{- 8} o h m^{- 1} c m^{- 1}$ . The solubility of AgCl given that $\land_{A g C l}^{\circ}$ = $137.2 o h m^{- 1} c m^{2} e q^{- 1}$ is

Discussion

46.	EMF of the cell, Ag\|AgNO3(0.1M)\|KBr(1N),AgBr(s)\|Ag is −0.6 V at 298 K Calculate the Ksp of AgBr at 298 K.
Answer» EMF of the cell, $A g \| A g N O_{3} (0.1 M) \| K B r (1 N), A g B r (s) \| A g$ is $- 0.6 V$ at $298 K$ Calculate the $K_{s p}$ of $A g B r$ at $298 K$ .

Discussion

47.	how light goes through a transparent object?
Answer» how light goes through a transparent object?

Discussion

48.	Product of the given reaction is:
Answer» Product of the given reaction is:

Discussion

49.	Molarity of H2SO4 solution is 0.8M and its density is 1.06g/cm-3 What will be the concentration of the solution in terms of molality and determine the mole fraction of the solution
Answer» Molarity of H2SO4 solution is 0.8M and its density is 1.06g/cm-3 What will be the concentration of the solution in terms of molality and determine the mole fraction of the solution

Discussion

50.	Why do solids and liquids have only 1 specific heat capacity whereas gases have two.
Answer» Why do solids and liquids have only 1 specific heat capacity whereas gases have two.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Does the rate of the reaction increases with a ZERO order reaction or is constant?

A hydrogen atom in its ground state is irradiated by light of wavelength 970Å. Taking hc/e = 1.237 x 10−6eV m and the ground state energy of hydrogen atom as - 13.6 eV, the number number of lines present in the emission spectrum is:___

Calculate the molality of 12.5% w/w sulphuric acid?

The compound that does not liberate CO2, on treatment with aqueous NaHCO3solution , is:

YO2/Ag←−−−−300∘CCH2=CH2S2Cl2−−−→X A. X is war gas B. X is thiol C. Y is hetero cyclic, aromatic D. Y is isomer of ethanal Correct statements are

Identify the Quantity which is a State function out of the following:

The human blood is buffered by ____

An alkene 'X' of the formula C4H8 on ozonolysis produced acetone and formaldehyde. The product obtained when 'X' reacts with HBr is

Which is wrong about nucleic Acid?

For a single step reaction to the type A + 2B → E + 2F

Each C-atom in diamond is - hybridized

On hydrolysis diborane produce?

The Ksp of Ag2CrO4 is 1.1 × 10−12 at 298K. The solubility (in mol/L) of Ag2CrO4 in a 0.1 M AgNO3 solution is

Which of the following fluoride does not exist?

An electron travels with a velocity of x ms−1. For a proton to have the same de-Broglie wavelength, the velocity will be approximately:

Consider the following phenols

In the conversion of Br2→BrO−3, the oxidation state of bromine changes from

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+3

The highest molar conductivity will be in case of

Geometrical isomerism in coordination compounds is usually exhibited by

Which of the following has a high polarising power

Westron is a highly toxic halogen derivative liquid used as fumigant and insecticide formed the reaction of acetylene with the halogen that is

On the basis of data given below predict which of the following gases shows the least adsorption on a definite amount of charcoal? GasCO2SO2CH4H2Critical T (K)30463019033

The smog is essentially caused by presence of

The compound that does not give a blue colour in lassaigne's test is

DeltaH and DeltaS for the reaction Ag2O(s) → 2Ag(s)+12 O2(g) are 30.56 kJ mol−1 and 66.00 JK−1mol−1 respectively, the temperature at which the free energy change for the reaction will be zero is:

The Eo reduction for Cu/CuS electrode is −x. Find the value of x. (Given: Ksp for CuS=8.0×10−36;Eo(Cu/Cu2+)=−0.34 V;log 2=0.3;2.303RTF=0.06)

The diamagnetic species is

In which case, geometry of the molecule is pyramidal?

Hybridisation of alkyl carbanion is

Which of the following will show maximum -I effect?

Kf of 1,4-dioxane is 4.9 mol-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:

What are KSH and HEM reagents and what are their functions?

Which one of the following reactions is a redox reaction?

Slaked lime is another name given to

The resonating structures for N2O are given below : Choose the correct decreasing order of stablity:

The order of metallic character of elements A, B, C and D is A &lt; B &lt; C &lt; D What is the order of their electronegative character?

The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes 1.80 cm apart and 5.4 cm2 area was found to be 32 ohm. Calculate ∧eq.

A capillary tube of length 10 cm is dipped 3 cm inside water. The water rises up to 5 cm in the capillary. If the same tube is dipped 6 cm inside water, the water will rise in capillary up to the height

The specific conductance of saturated solution of AgCl is found to be 1.86×10−6ohm−1cm−1 and that of water is 6×10−8ohm−1cm−1. The solubility of AgCl given that ∧∘AgCl = 137.2ohm−1cm2eq−1 is

EMF of the cell, Ag|AgNO3(0.1M)|KBr(1N),AgBr(s)|Ag is −0.6 V at 298 K Calculate the Ksp of AgBr at 298 K.

how light goes through a transparent object?

Product of the given reaction is:

Molarity of H2SO4 solution is 0.8M and its density is 1.06g/cm-3 What will be the concentration of the solution in terms of molality and determine the mole fraction of the solution

Why do solids and liquids have only 1 specific heat capacity whereas gases have two.

The order of metallic character of elements A, B, C and D is A < B < C < D What is the order of their electronegative character?