46295 + Interview Questions in Chemistry

1.	Which of the following will change the equilibrium constant for a reaction mixture?
Answer» Which of the following will change the equilibrium constant for a reaction mixture?

Discussion

2.	We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?
Answer» We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

2.

We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

Answer»

We have a cube as follows which has a sphere inside in the following two ways:

Assume that the cube and sphere are identical in both cases.

Is the packing fraction different in these two cases?

Discussion

3.	Which one of the following reactions does not involve either oxidation or reduction
Answer» Which one of the following reactions does not involve either oxidation or reduction

Discussion

4.	No.of bondingelectron pairs in N2 on the basis of MOT
Answer» No.of bondingelectron pairs in N2 on the basis of MOT

Discussion

5.	Which of the following is a disproportionation reaction?
Answer» Which of the following is a disproportionation reaction?

Discussion

6.	Most acidic compound among the following is:
Answer» Most acidic compound among the following is:

Discussion

7.	38. Total number of stereoisomers of Ma2b2c2 type
Answer» 38. Total number of stereoisomers of Ma2b2c2 type

Discussion

8.	An atom in an excited state temporarily stores energy. If the lifetime of this excited state is measured to be 1.0×10−10 s then the minimum uncertainty in the energy of the state is X×10−6 eV. Then X is . Take h=6.6×10−34 Js and π=3.
Answer» An atom in an excited state temporarily stores energy. If the lifetime of this excited state is measured to be $1.0 \times 10^{- 10} s$ then the minimum uncertainty in the energy of the state is $X \times 10^{- 6}$ eV. Then X is . Take $h = 6.6 \times 10^{- 34} J s a n d π = 3$ .

Discussion

9.	A gas is heated form 27 oC to 127 oC and the volume is increased from 20 litres to 36 litres by moving a large piston out within a cylinder, if the original pressure was Po then what would be the final pressure?
Answer» A gas is heated form $27^{o} C$ to $127^{o} C$ and the volume is increased from 20 litres to 36 litres by moving a large piston out within a cylinder, if the original pressure was $P_{o}$ then what would be the final pressure?

Discussion

10.	Which of these will produce the highest yield in Friedel Craft reaction ?
Answer» Which of these will produce the highest yield in Friedel Craft reaction ?

Discussion

11.	What is the derivation of , I = neA Vd
Answer» What is the derivation of , I = neA Vd

Discussion

12.	23.When 0.1 mole CH3COOH is present in a litre solvent it shows elevation in boiling point of 0.75^° C. Acid dissociation constant will be – (Kb = 5 K Kg mol–1) and (M Image not present m)
Answer» 23.When 0.1 mole CH3COOH is present in a litre solvent it shows elevation in boiling point of 0.75^° C. Acid dissociation constant will be – (Kb = 5 K Kg mol–1) and (M Image not present m)

Discussion

13.	Describe the reaction of heavy water in nuclear reactor along with its importance
Answer» Describe the reaction of heavy water in nuclear reactor along with its importance

Discussion

14.	How log table is used to determine the value of log function?
Answer» How log table is used to determine the value of log function?

Discussion

15.	A dilute aqueous solution of Na2SO4 is electrolysed using platinum electrodes. The products at the anode and cathode are:
Answer» A dilute aqueous solution of $N a_{2} S O_{4}$ is electrolysed using platinum electrodes. The products at the anode and cathode are:

Discussion

16.	The total number of compounds having at least one bridging oxo group among the molecules given below is. N2O3,N2O5,P4O6,P4O7,H4P2O5,H5P3O10,H2S2O3,H2S2O5
Answer» The total number of compounds having at least one bridging oxo group among the molecules given below is. $N_{2} O_{3}, N_{2} O_{5}, P_{4} O_{6}, P_{4} O_{7}, H_{4} P_{2} O_{5}, H_{5} P_{3} O_{10}, H_{2} S_{2} O_{3}, H_{2} S_{2} O_{5}$

Discussion

17.	64 Draw the structures of geometrical isomers of 1,2-Dichlorocyclohexane
Answer» 64 Draw the structures of geometrical isomers of 1,2-Dichlorocyclohexane

Discussion

18.	1 mole of o2 present in h2so4
Answer» 1 mole of o2 present in h2so4

Discussion

19.	Explain hybridisation in ethene molecule with easy diagram.
Answer» Explain hybridisation in ethene molecule with easy diagram.

Discussion

20.	Which of the following complexes do not follow EAN rule?
Answer» Which of the following complexes do not follow $E A N$ rule?

Discussion

21.	How many electrons are involved in the oxidation of KMnO4 in basic medium?
Answer» How many electrons are involved in the oxidation of KMnO₄ in basic medium?

Discussion

22.	Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below: (a)Human muscle-fluid, 6.83 (b)Human stomach fluid, 1.2 (c) Human blood, 7.38 (d)Human saliva, 6.4.
Answer» Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below: (a)Human muscle-fluid, 6.83 (b)Human stomach fluid, 1.2 (c) Human blood, 7.38 (d)Human saliva, 6.4.

Discussion

23.	45.Why p block and s block elements are called representative or main group elements
Answer» 45.Why p block and s block elements are called representative or main group elements

Discussion

24.	IUPAC name of Neo-hep†an e
Answer» IUPAC name of Neo-hep†an e

Discussion

25.	Give examples and suggest reasons for the following features of the transition metal chemistry:(i)The lowest oxide of transition metal is basic, and the highest is amphoteric/acidic.(ii) A transition metal exhibits the highest oxidation state in oxides and fluorides.(iii) The highest oxidation state is exhibited in the oxoanions of a metal.
Answer» Give examples and suggest reasons for the following features of the transition metal chemistry: (i)The lowest oxide of transition metal is basic, and the highest is amphoteric/acidic. (ii) A transition metal exhibits the highest oxidation state in oxides and fluorides. (iii) The highest oxidation state is exhibited in the oxoanions of a metal.

25.

Give examples and suggest reasons for the following features of the transition metal chemistry:(i)The lowest oxide of transition metal is basic, and the highest is amphoteric/acidic.(ii) A transition metal exhibits the highest oxidation state in oxides and fluorides.(iii) The highest oxidation state is exhibited in the oxoanions of a metal.

Answer»

Give examples and suggest reasons for the following features of the transition metal chemistry:

(i)The lowest oxide of transition metal is basic, and the highest is amphoteric/acidic.

(ii) A transition metal exhibits the highest oxidation state in oxides and fluorides.

(iii) The highest oxidation state is exhibited in the oxoanions of a metal.

Discussion

26.	According to the VSEPR theory, the geometry and shape of the molecule depends upon:
Answer» According to the VSEPR theory, the geometry and shape of the molecule depends upon:

Discussion

27.	Which of the following does not show catenation?
Answer» Which of the following does not show catenation?

Discussion

28.	Which of the pair of complex compounds are tetrahedral as well as diamagnetic?
Answer» Which of the pair of complex compounds are tetrahedral as well as diamagnetic?

Discussion

29.	what is the degree of freedom of rigid and non rigid diatomic gas? what is the vibrational degree of freedom of linear and non linear triatomic gas? what is degree of freedom of CO_2?
Answer» what is the degree of freedom of rigid and non rigid diatomic gas? what is the vibrational degree of freedom of linear and non linear triatomic gas? what is degree of freedom of CO_2?

Discussion

30.	Energy of an electron in 5th orbit of H-atom isa) -13.6eVb) -5.40eVc) -0.54eVd) -0.85eV
Answer» Energy of an electron in 5th orbit of H-atom is a) -13.6eV b) -5.40eV c) -0.54eV d) -0.85eV

Discussion

31.	The edge length of the unit cell of a bcc lattice of a metal is 350 pm.What is the radius of the atom?(√3=1.7)[1 Mark]
Answer» The edge length of the unit cell of a bcc lattice of a metal is $350 pm$ . What is the radius of the atom? ( $\sqrt{3} = 1.7$ ) [1 Mark]

Discussion

32.	22. For a reaction XA+YB = Product when concentration of A and B both was doubled rate becomes 8 times of the initial.When concentration of A was doubled keeping B constant rate becomes 4 times of the initial. Then find out the rate expression.
Answer» 22. For a reaction XA+YB = Product when concentration of A and B both was doubled rate becomes 8 times of the initial.When concentration of A was doubled keeping B constant rate becomes 4 times of the initial. Then find out the rate expression.

Discussion

33.	A solid is made up of elements A, B, C and D. Atoms A, B, C, and D are located at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the body-diagonal planes of symmetry are removed then the formula of compound is
Answer» A solid is made up of elements A, B, C and D. Atoms A, B, C, and D are located at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the body-diagonal planes of symmetry are removed then the formula of compound is

Discussion

34.	A mixture of calcium acetate and calcium formate is dry distilled. How many possible products are formed from the following.1.ethanal2.butanone3.methanal4.acetone
Answer» A mixture of calcium acetate and calcium formate is dry distilled. How many possible products are formed from the following. 1.ethanal 2.butanone 3.methanal 4.acetone

Discussion

35.	Which of the following carbonium ion is moststable?(1) CH3CH2+(2) CH3+ 3)ph-CH2+ (4)CH2+-phNO2
Answer» Which of the following carbonium ion is moststable?(1) CH3CH2+(2) CH3+ 3)ph-CH2+ (4)CH2+-phNO2

Discussion

36.	Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm. Calculate the frequency (ν) and wave number ( ¯V ) of the yellow light.
Answer» Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm. Calculate the frequency (ν) and wave number ( $¯ V$ ) of the yellow light.

Discussion

37.	In a YDSE bi chromatic light of wavelength 400nm and 500nm are used. The dis†an ce between the slits is 0.1mm and the dis†an ce between the plane of the slits and the screen is 1m. The minimum dis†an ce between two successive regions of complete darkness is
Answer» In a YDSE bi chromatic light of wavelength 400nm and 500nm are used. The dis†an ce between the slits is 0.1mm and the dis†an ce between the plane of the slits and the screen is 1m. The minimum dis†an ce between two successive regions of complete darkness is

Discussion

38.	Predict the correct order of −I strength for the following groups:I.−CH2NH2II.−CH=NHIII.−CN
Answer» Predict the correct order of $- I$ strength for the following groups: $I . - C H_{2} N H_{2} I I . - C H = N H I I I . - C N$

Discussion

39.	Acid A is prepared from white phosphorus on reaction with alkali, while acid B is prepared from red phosphorus on reaction with alkali. If the total number of P – OH linkage in both molecules (one molecule each) is X and number of P – H bonds is Y, then the value of (X + Y) is
Answer» Acid A is prepared from white phosphorus on reaction with alkali, while acid B is prepared from red phosphorus on reaction with alkali. If the total number of P – OH linkage in both molecules (one molecule each) is X and number of P – H bonds is Y, then the value of (X + Y) is

Discussion

40.	EAN of Mn2(CO)10 will be what?
Answer» EAN of Mn2(CO)10 will be what?

Discussion

41.	what is the formula of thermodynamic 1st l
Answer» what is the formula of thermodynamic 1st l

Discussion

42.	The number of electrons involved in the reduction of Cr2O2−7 in acidic solution to Cr3+ is
Answer» The number of electrons involved in the reduction of $C r_{2} O_{7}^{2 -}$ in acidic solution to $C r^{3 +}$ is

Discussion

43.	The reduction of peroxydisulphate ion by I– ion is expressed by S2O2−8+3I−→2SO2−4+I−3If the rate of disappearance of I– is 9/2×10–3 mol/L−1 s−1, what is the rate of formation of SO2−4 during the same time?
Answer» The reduction of peroxydisulphate ion by $I^{-}$ ion is expressed by $S_{2} O_{8}^{2 -} + 3 I^{-} \to 2 S O_{4}^{2 -} + I_{3}^{-}$ If the rate of disappearance of $I^{-}$ is $9 / 2 \times 10^{- 3} {mol/L}^{- 1} s^{- 1}$ , what is the rate of formation of $S O_{4}^{2 -}$ during the same time?

Discussion

44.	Which of the following is not the criteria of purity of a subs†an ce? (a) solubility (b) melting point (c) boiling point (d) density
Answer» Which of the following is not the criteria of purity of a subs†an ce? (a) solubility (b) melting point (c) boiling point (d) density

Discussion

45.	Why SO4²– can't undergo furthur oxidation
Answer» Why SO4²– can't undergo furthur oxidation

Discussion

46.	for 1 mole of a diatomic gas γ is equal to
Answer» for 1 mole of a diatomic gas γ is equal to

Discussion

47.	Which of the following chemical reactions depicts the oxidising behaviour of H2SO4?
Answer» Which of the following chemical reactions depicts the oxidising behaviour of $H_{2} S O_{4}$ ?

Discussion

48.	The volume of oxygen at STP required to burn 2.4 g of carbon completely is
Answer» The volume of oxygen at STP required to burn 2.4 g of carbon completely is

Discussion

49.	The value of observed and calculated molecular weights of silver nitrate are 92.64 and 170 respectively. The degree of dissociation of silver nitrate is
Answer» The value of observed and calculated molecular weights of silver nitrate are 92.64 and 170 respectively. The degree of dissociation of silver nitrate is

Discussion

50.	O2+FeS2→FeO+SO2The number of moles of FeS2 required to produce 20 mol electrons to reduce O2 in the above reaction is:
Answer» $O_{2} + F e S_{2} \to F e O + S O_{2}$ The number of moles of $F e S_{2}$ required to produce $20 mol$ electrons to reduce $O_{2}$ in the above reaction is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following will change the equilibrium constant for a reaction mixture?

We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

Which one of the following reactions does not involve either oxidation or reduction

No.of bondingelectron pairs in N2 on the basis of MOT

Which of the following is a disproportionation reaction?

Most acidic compound among the following is:

38. Total number of stereoisomers of Ma2b2c2 type

An atom in an excited state temporarily stores energy. If the lifetime of this excited state is measured to be 1.0×10−10 s then the minimum uncertainty in the energy of the state is X×10−6 eV. Then X is . Take h=6.6×10−34 Js and π=3.

A gas is heated form 27 oC to 127 oC and the volume is increased from 20 litres to 36 litres by moving a large piston out within a cylinder, if the original pressure was Po then what would be the final pressure?

Which of these will produce the highest yield in Friedel Craft reaction ?

What is the derivation of , I = neA Vd

23.When 0.1 mole CH3COOH is present in a litre solvent it shows elevation in boiling point of 0.75^° C. Acid dissociation constant will be – (Kb = 5 K Kg mol–1) and (M Image not present m)

Describe the reaction of heavy water in nuclear reactor along with its importance

How log table is used to determine the value of log function?

A dilute aqueous solution of Na2SO4 is electrolysed using platinum electrodes. The products at the anode and cathode are:

The total number of compounds having at least one bridging oxo group among the molecules given below is. N2O3,N2O5,P4O6,P4O7,H4P2O5,H5P3O10,H2S2O3,H2S2O5

64 Draw the structures of geometrical isomers of 1,2-Dichlorocyclohexane

1 mole of o2 present in h2so4

Explain hybridisation in ethene molecule with easy diagram.

Which of the following complexes do not follow EAN rule?

How many electrons are involved in the oxidation of KMnO4 in basic medium?

Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below: (a)Human muscle-fluid, 6.83 (b)Human stomach fluid, 1.2 (c) Human blood, 7.38 (d)Human saliva, 6.4.

45.Why p block and s block elements are called representative or main group elements

IUPAC name of Neo-hep†an e

According to the VSEPR theory, the geometry and shape of the molecule depends upon:

Which of the following does not show catenation?

Which of the pair of complex compounds are tetrahedral as well as diamagnetic?

what is the degree of freedom of rigid and non rigid diatomic gas? what is the vibrational degree of freedom of linear and non linear triatomic gas? what is degree of freedom of CO_2?

Energy of an electron in 5th orbit of H-atom isa) -13.6eVb) -5.40eVc) -0.54eVd) -0.85eV

The edge length of the unit cell of a bcc lattice of a metal is 350 pm.What is the radius of the atom?(√3=1.7)[1 Mark]

22. For a reaction XA+YB = Product when concentration of A and B both was doubled rate becomes 8 times of the initial.When concentration of A was doubled keeping B constant rate becomes 4 times of the initial. Then find out the rate expression.

A solid is made up of elements A, B, C and D. Atoms A, B, C, and D are located at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the body-diagonal planes of symmetry are removed then the formula of compound is

A mixture of calcium acetate and calcium formate is dry distilled. How many possible products are formed from the following.1.ethanal2.butanone3.methanal4.acetone

Which of the following carbonium ion is moststable?(1) CH3CH2+(2) CH3+ 3)ph-CH2+ (4)CH2+-phNO2

Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm. Calculate the frequency (ν) and wave number ( ¯V ) of the yellow light.

In a YDSE bi chromatic light of wavelength 400nm and 500nm are used. The dis†an ce between the slits is 0.1mm and the dis†an ce between the plane of the slits and the screen is 1m. The minimum dis†an ce between two successive regions of complete darkness is

Predict the correct order of −I strength for the following groups:I.−CH2NH2II.−CH=NHIII.−CN

Acid A is prepared from white phosphorus on reaction with alkali, while acid B is prepared from red phosphorus on reaction with alkali. If the total number of P – OH linkage in both molecules (one molecule each) is X and number of P – H bonds is Y, then the value of (X + Y) is

EAN of Mn2(CO)10 will be what?

what is the formula of thermodynamic 1st l

The number of electrons involved in the reduction of Cr2O2−7 in acidic solution to Cr3+ is

The reduction of peroxydisulphate ion by I– ion is expressed by S2O2−8+3I−→2SO2−4+I−3If the rate of disappearance of I– is 9/2×10–3 mol/L−1 s−1, what is the rate of formation of SO2−4 during the same time?

Which of the following is not the criteria of purity of a subs†an ce? (a) solubility (b) melting point (c) boiling point (d) density

Why SO4²– can't undergo furthur oxidation

for 1 mole of a diatomic gas γ is equal to

Which of the following chemical reactions depicts the oxidising behaviour of H2SO4?

The volume of oxygen at STP required to burn 2.4 g of carbon completely is

The value of observed and calculated molecular weights of silver nitrate are 92.64 and 170 respectively. The degree of dissociation of silver nitrate is

O2+FeS2→FeO+SO2The number of moles of FeS2 required to produce 20 mol electrons to reduce O2 in the above reaction is: