46295 + Interview Questions in Chemistry

1.	A balloon blown with 1 mol of a gas, has a volume of 480 ml at 5∘C. If the balloon is filled to 78 th of its maximum capacity, then which of the following is/ are correct?
Answer» A balloon blown with 1 mol of a gas, has a volume of 480 ml at $5^{\circ} C$ . If the balloon is filled to $\frac{7}{8}$ th of its maximum capacity, then which of the following is/ are correct?

Discussion

2.	Number of oxygen atom present in the aromatic product P is:
Answer» Number of oxygen atom present in the aromatic product P is:

Discussion

3.	14g of CO at 27°c is mixed with 16g of O2 at 47°c
Answer» 14g of CO at 27°c is mixed with 16g of O2 at 47°c

Discussion

4.	A voltaic cell has an E° value of (–1V). The cell reaction:
Answer» A voltaic cell has an E° value of (–1V). The cell reaction:

Discussion

5.	hybridization of chlorine in ClO_{
Answer» hybridization of chlorine in ClO_{

Discussion

6.	Which of the following molecule is aromatic?
Answer» Which of the following molecule is aromatic?

Discussion

7.	The correct increasing order of trans-effect of the following species is :
Answer» The correct increasing order of trans-effect of the following species is :

Discussion

8.	A certain element crystallises in a bcc lattice of unit cell edge length 27 ∘A. If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cell in ∘A will be (Round off to the nearest Integer).[Assume each lattice point has a single atom][Assume √3=1.73, √2=1.41]
Answer» A certain element crystallises in a bcc lattice of unit cell edge length $27 \circ A$ . If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cell in $\circ A$ will be (Round off to the nearest Integer). [Assume each lattice point has a single atom] $[Assume \sqrt{3} = 1.73, \sqrt{2} = 1.41]$

Discussion

9.	The degree of dissociation of PCl5 at a certain temperature and under atmospheric pressure is 0.2. Calculate the pressure at which it will be half dissociated at the same temperature:
Answer» The degree of dissociation of $P C l_{5}$ at a certain temperature and under atmospheric pressure is 0.2. Calculate the pressure at which it will be half dissociated at the same temperature:

Discussion

10.	Select the correct order of solubility for the following gases in aqueous solution:
Answer» Select the correct order of solubility for the following gases in aqueous solution:

Discussion

11.	A compound Vanadium has a magnetic moment of 1.73 BM. If the vanadium ion in the compound is V^x+, then the value of x is
Answer» A compound Vanadium has a magnetic moment of 1.73 BM. If the vanadium ion in the compound is V^x+, then the value of x is

Discussion

12.	Mx-n/5+nx+m/7+nx=m/8
Answer» Mx-n/5+nx+m/7+nx=m/8

Discussion

13.	If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator? (A) CH3OH (B) C2H5OH (C) C2H4(OH)2 (D) C3H5(OH)3
Answer» If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator? (A) CH₃OH (B) C₂H₅OH (C) C₂H₄(OH)₂ (D) C₃H₅(OH)₃

13.

If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator? (A) CH3OH (B) C2H5OH (C) C2H4(OH)2 (D) C3H5(OH)3

Answer»

If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator?

(A) CH₃OH

(B) C₂H₅OH

(C) C₂H₄(OH)₂

(D) C₃H₅(OH)₃

Discussion

14.	What is the major compound formed in the following reaction?
Answer» What is the major compound formed in the following reaction?

Discussion

15.	which one is most basic 1 ) 1 butyne 2) 2 butyne 3) 1butene 4)bu†an
Answer» which one is most basic 1 ) 1 butyne 2) 2 butyne 3) 1butene 4)bu†an

Discussion

16.	Question 9There are three solids made up of aluminium, steel and wood, of the same shape and same volume. Which of them would have highest inertia?
Answer» Question 9 There are three solids made up of aluminium, steel and wood, of the same shape and same volume. Which of them would have highest inertia?

Discussion

17.	What is the difference between primary standard and secondary standard solutions?
Answer» What is the difference between primary standard and secondary standard solutions?

Discussion

18.	Define chemical equilibrium.
Answer» Define chemical equilibrium.

Discussion

19.	What will be the vapour pressure lowering caused by addition of 50 g of a non volatile solute (molecular mass = 250 g/mol) to 504 g water, if the vapour pressure of pure water at 25oC is nearly 24 mm Hg.
Answer» What will be the vapour pressure lowering caused by addition of $50 g$ of a non volatile solute $(molecular mass = 250 g/mol)$ to $504 g$ water, if the vapour pressure of pure water at $25^{o} C$ is nearly $24 mm Hg$ .

Discussion

20.	Find the E0 value for the reaction,In2+(aq)+Cu2+(aq)⇌In3+(aq)+Cu+(aq) at 298 K.Given:E0Cu2+(aq)/Cu+(aq)=0.15 VE0In2+(aq)/In+(aq)=−0.4 VE0In3+(aq)/In+(aq)=−0.42 V
Answer» Find the $E^{0}$ value for the reaction, $I n^{2 +} (a q) + C u^{2 +} (a q) ⇌ I n^{3 +} (a q) + C u^{+} (a q)$ at $298 K$ . Given: $E_{C u^{2 +} (a q) / C u^{+} (a q)}^{0} = 0.15 V E_{I n^{2 +} (a q) / I n^{+} (a q)}^{0} = - 0.4 V$ $E_{I n^{3 +} (a q) / I n^{+} (a q)}^{0} = - 0.42 V$

Discussion

21.	42. The molality of 15% (w/v) solution of H2SO4 with density 1.1g/cm3 is
Answer» 42. The molality of 15% (w/v) solution of H2SO4 with density 1.1g/cm3 is

Discussion

22.	Find the total number of 2c−2e and 3c−2e bonds in Be(BH4)2 respectively.
Answer» Find the total number of $2 c - 2 e$ and $3 c - 2 e$ bonds in $B e (B H_{4})_{2}$ respectively.

Discussion

23.	Which of the following molecules contains only -Pi bonds?Options:O2+CN–F2C2
Answer» Which of the following molecules contains only -Pi bonds? Options: O2+ CN– F2 C2

Discussion

24.	lattice energy theory in hindi
Answer» lattice energy theory in hindi

Discussion

25.	There are two container with mixture of milk and water. In the container 1 milk and water were in the ratio 3:2 and in the container 2 milk and water were in the ratio 2:3.How many litres of mixture must be taken from container 1 and mixed with container 2 in order to a 20l mixture having milk and water in the ratio 9:1 ?
Answer» There are two container with mixture of milk and water. In the container 1 milk and water were in the ratio 3:2 and in the container 2 milk and water were in the ratio 2:3.How many litres of mixture must be taken from container 1 and mixed with container 2 in order to a 20l mixture having milk and water in the ratio 9:1 ?

Discussion

26.	Solubility product of silver bromide is 5.0×10−13. The quantity of potassium bromide (molar mass is 120 gmol−1) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is:
Answer» Solubility product of silver bromide is $5.0 \times 10^{- 13}$ . The quantity of potassium bromide (molar mass is 120 gmol $^{- 1})$ to be added to 1 litre of $0.05 M$ solution of silver nitrate to start the precipitation of $A g B r$ is:

Discussion

27.	Among the following complex ions, which is diamagnetic in nature is
Answer» Among the following complex ions, which is diamagnetic in nature is

Discussion

28.	47.Why in biological N2 fixation equation we take 8H+ not 6H+ which is actually needed to form 2 ammonia molecules
Answer» 47.Why in biological N2 fixation equation we take 8H+ not 6H+ which is actually needed to form 2 ammonia molecules

Discussion

29.	Question 04 Which of the followig statement is not correct about the characteristics of cathode rays ? (a) The start from the cathode and move towards the anode (b) They travel in straight line in the absence of an external eletrical or magnetic field (c) Characteristics of cathode rays do not depend upon the material of elctrodes in cathode ray tube (d) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube
Answer» Question 04 Which of the followig statement is not correct about the characteristics of cathode rays ? (a) The start from the cathode and move towards the anode (b) They travel in straight line in the absence of an external eletrical or magnetic field (c) Characteristics of cathode rays do not depend upon the material of elctrodes in cathode ray tube (d) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube

29.

Question 04 Which of the followig statement is not correct about the characteristics of cathode rays ? (a) The start from the cathode and move towards the anode (b) They travel in straight line in the absence of an external eletrical or magnetic field (c) Characteristics of cathode rays do not depend upon the material of elctrodes in cathode ray tube (d) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube

Answer»

Question 04

Which of the followig statement is not correct about the characteristics of cathode rays ?

(a) The start from the cathode and move towards the anode

(b) They travel in straight line in the absence of an external eletrical or magnetic field

(c) Characteristics of cathode rays do not depend upon the material of elctrodes in cathode ray tube

(d) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube

Discussion

30.	How to draw the lewis structure of any big molecule that we dont know?, for eg., CH2(CN)2
Answer» How to draw the lewis structure of any big molecule that we dont know?, for eg., CH2(CN)2

Discussion

31.	Heptaneand octane form an ideal solution. At 373 K,the vapour pressures of the two liquid components are 105.2 kPa and46.8 kPa respectively. What will be the vapour pressure of a mixtureof 26.0 g of heptane and 35 g of octane?
Answer» Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

Discussion

32.	According to IUPAC, what is the systematic name of the compound shown below?
Answer» According to IUPAC, what is the systematic name of the compound shown below?

Discussion

33.	What is the formula to calculate the radius of an orbit of the atom and velocity of the specific shell of the atom.
Answer» What is the formula to calculate the radius of an orbit of the atom and velocity of the specific shell of the atom.

Discussion

34.	The products (a) and (b) are :
Answer» The products (a) and (b) are :

Discussion

35.	3. A potential difference of 20V applied to the ends of a column of M/10 AgNO3 solution, 4cm in diameter and 12 cm in length gave a current of 20 A. What is the molar conductance (cm2ohm-1mol-1) of the solution?
Answer» 3. A potential difference of 20V applied to the ends of a column of M/10 AgNO3 solution, 4cm in diameter and 12 cm in length gave a current of 20 A. What is the molar conductance (cm2ohm-1mol-1) of the solution?

Discussion

36.	The acidity of compounds I-IV in water I. Ethanol II. Acetic Acid III. Phenol IV. Acetonitrile follows the order
Answer» The acidity of compounds I-IV in water I. Ethanol II. Acetic Acid III. Phenol IV. Acetonitrile follows the order

Discussion

37.	The orbitals having lower energy in tetrahedral complexes according to CFT are ?
Answer» The orbitals having lower energy in tetrahedral complexes according to CFT are ?

Discussion

38.	Sir how to find avg. Atomic weight of an element.
Answer» Sir how to find avg. Atomic weight of an element.

Discussion

39.	The correct order of nucleophilic substitution in1) Chlorobenzene2) Ortho nitro chloro Benzene3) 1-3 dinitro chloro Benzene4) 1-3-5 trinitrochlorobenzene
Answer» The correct order of nucleophilic substitution in 1) Chlorobenzene 2) Ortho nitro chloro Benzene 3) 1-3 dinitro chloro Benzene 4) 1-3-5 trinitrochlorobenzene

Discussion

40.	What is the significant figure in 1200N and in 78200cm?
Answer» What is the significant figure in 1200N and in 78200cm?

Discussion

41.	The correct order of acidity of the following compounds is
Answer» The correct order of acidity of the following compounds is

41.

The correct order of acidity of the following compounds is

Answer»

The correct order of acidity of the following compounds is

Discussion

42.	For the reaction,PCl3+Cl2'---PCl5,,H=-xKJif the HfPCl3 is -yKJ what is Hf PCl5
Answer» For the reaction, PCl3+Cl2'---PCl5,,H=-xKJ if the HfPCl3 is -yKJ what is Hf PCl5

Discussion

43.	in the reaction I_2 +I^-=I_3^-, the lewis base is 1.I^- 2.I_2 3.I_3^- 4.none
Answer» in the reaction I_2 +I^-=I_3^-, the lewis base is 1.I^- 2.I_2 3.I_3^- 4.none

Discussion

44.	Give reasons for the following : (i) Oxygen is a gas but sulphur is a solid. (ii) O3 acts as a powerful oxidising agent. (iii) BiH3 is the strongest reducing agent amongst all the hydrides of Group 15 elements.
Answer» Give reasons for the following : (i) Oxygen is a gas but sulphur is a solid. (ii) $O_{3}$ acts as a powerful oxidising agent. (iii) $B i H_{3}$ is the strongest reducing agent amongst all the hydrides of Group 15 elements.

Discussion

45.	volome of oxgen at NTP required to burn 1kg of coal(100% carbon) is
Answer» volome of oxgen at NTP required to burn 1kg of coal(100% carbon) is

Discussion

46.	GUASS LAW AND APPLICATIONS?
Answer» GUASS LAW AND APPLICATIONS?

Discussion

47.	18g of glucose (C6H12O6) is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil (at 1 atm)? Kb for water is 0.52Kkgmol−1.
Answer» 18g of glucose $(C_{6} H_{12} O_{6})$ is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil (at 1 atm)? $K_{b}$ for water is $0.52 K k g m o l^{- 1}$ .

Discussion

48.	Number of unpaired electrons present in O2−2 is:
Answer» Number of unpaired electrons present in $O_{2}^{2 -}$ is:

Discussion

49.	What is the graphical representation of log V vs log T ??
Answer» What is the graphical representation of log V vs log T ??

Discussion

50.	41. In Arrhenius equation for certain reaction, the value of A and E (activation energy) are 4\ast10^{13}S^{-1} and 98.6 kJ mol^{-1} respectively. If the reaction is of first order, then at what temperature will it's half life period be 10 minutes? log 2.88=0.4594 1.350.5 K 2.270.2 K 3.453.6K 4.311.5K
Answer» 41. In Arrhenius equation for certain reaction, the value of A and E (activation energy) are 4\ast10^{13}S^{-1} and 98.6 kJ mol^{-1} respectively. If the reaction is of first order, then at what temperature will it's half life period be 10 minutes? log 2.88=0.4594 1.350.5 K 2.270.2 K 3.453.6K 4.311.5K

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A balloon blown with 1 mol of a gas, has a volume of 480 ml at 5∘C. If the balloon is filled to 78 th of its maximum capacity, then which of the following is/ are correct?

Number of oxygen atom present in the aromatic product P is:

14g of CO at 27°c is mixed with 16g of O2 at 47°c

A voltaic cell has an E° value of (–1V). The cell reaction:

hybridization of chlorine in ClO_{

Which of the following molecule is aromatic?

The correct increasing order of trans-effect of the following species is :

The degree of dissociation of PCl5 at a certain temperature and under atmospheric pressure is 0.2. Calculate the pressure at which it will be half dissociated at the same temperature:

Select the correct order of solubility for the following gases in aqueous solution:

A compound Vanadium has a magnetic moment of 1.73 BM. If the vanadium ion in the compound is V^x+, then the value of x is

Mx-n/5+nx+m/7+nx=m/8

If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator? (A) CH3OH (B) C2H5OH (C) C2H4(OH)2 (D) C3H5(OH)3

What is the major compound formed in the following reaction?

which one is most basic 1 ) 1 butyne 2) 2 butyne 3) 1butene 4)bu†an

Question 9There are three solids made up of aluminium, steel and wood, of the same shape and same volume. Which of them would have highest inertia?

What is the difference between primary standard and secondary standard solutions?

Define chemical equilibrium.

What will be the vapour pressure lowering caused by addition of 50 g of a non volatile solute (molecular mass = 250 g/mol) to 504 g water, if the vapour pressure of pure water at 25oC is nearly 24 mm Hg.

Find the E0 value for the reaction,In2+(aq)+Cu2+(aq)⇌In3+(aq)+Cu+(aq) at 298 K.Given:E0Cu2+(aq)/Cu+(aq)=0.15 VE0In2+(aq)/In+(aq)=−0.4 VE0In3+(aq)/In+(aq)=−0.42 V

42. The molality of 15% (w/v) solution of H2SO4 with density 1.1g/cm3 is

Find the total number of 2c−2e and 3c−2e bonds in Be(BH4)2 respectively.

Which of the following molecules contains only -Pi bonds?Options:O2+CN–F2C2

lattice energy theory in hindi

Solubility product of silver bromide is 5.0×10−13. The quantity of potassium bromide (molar mass is 120 gmol−1) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is:

Among the following complex ions, which is diamagnetic in nature is

47.Why in biological N2 fixation equation we take 8H+ not 6H+ which is actually needed to form 2 ammonia molecules

How to draw the lewis structure of any big molecule that we dont know?, for eg., CH2(CN)2

Heptaneand octane form an ideal solution. At 373 K,the vapour pressures of the two liquid components are 105.2 kPa and46.8 kPa respectively. What will be the vapour pressure of a mixtureof 26.0 g of heptane and 35 g of octane?

According to IUPAC, what is the systematic name of the compound shown below?

What is the formula to calculate the radius of an orbit of the atom and velocity of the specific shell of the atom.

The products (a) and (b) are :

3. A potential difference of 20V applied to the ends of a column of M/10 AgNO3 solution, 4cm in diameter and 12 cm in length gave a current of 20 A. What is the molar conductance (cm2ohm-1mol-1) of the solution?

The acidity of compounds I-IV in water I. Ethanol II. Acetic Acid III. Phenol IV. Acetonitrile follows the order

The orbitals having lower energy in tetrahedral complexes according to CFT are ?

Sir how to find avg. Atomic weight of an element.

The correct order of nucleophilic substitution in1) Chlorobenzene2) Ortho nitro chloro Benzene3) 1-3 dinitro chloro Benzene4) 1-3-5 trinitrochlorobenzene

What is the significant figure in 1200N and in 78200cm?

The correct order of acidity of the following compounds is

For the reaction,PCl3+Cl2'---PCl5,,H=-xKJif the HfPCl3 is -yKJ what is Hf PCl5

in the reaction I_2 +I^-=I_3^-, the lewis base is 1.I^- 2.I_2 3.I_3^- 4.none

Give reasons for the following : (i) Oxygen is a gas but sulphur is a solid. (ii) O3 acts as a powerful oxidising agent. (iii) BiH3 is the strongest reducing agent amongst all the hydrides of Group 15 elements.

volome of oxgen at NTP required to burn 1kg of coal(100% carbon) is

GUASS LAW AND APPLICATIONS?

18g of glucose (C6H12O6) is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil (at 1 atm)? Kb for water is 0.52Kkgmol−1.

Number of unpaired electrons present in O2−2 is:

What is the graphical representation of log V vs log T ??