46295 + Interview Questions in Chemistry

1.	If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is
Answer» If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is

Discussion

2.	Identify Z in sequence of reactions :
Answer» Identify Z in sequence of reactions :

Discussion

3.	10 g of ice at 0 ice at 00Cis mixed with m mass of water at 500 C. What is minimum value of mso that ice melts completely?( L = 80 cal/g and s = 1 cal/ g-0C)
Answer» 10 g of ice at 0 ice at 0⁰C is mixed with m mass of water at 50⁰ C. What is minimum value of m so that ice melts completely?( L = 80 cal/g and s = 1 cal/ g-⁰C)

Discussion

4.	If a physical quantity depends upon 3 or more physical quantities even if TWO OF THEM HAVE THE SAME DIMENSIONS, the formula cannot be derived why so?
Answer» If a physical quantity depends upon 3 or more physical quantities even if TWO OF THEM HAVE THE SAME DIMENSIONS, the formula cannot be derived why so?

Discussion

5.	How much sulphuric acid is obtained from 5kg of pure sulphur.( s8)
Answer» How much sulphuric acid is obtained from 5kg of pure sulphur.( s8)

Discussion

6.	In the conplex reactions is the molecularity and order same of the slowest step?
Answer» In the conplex reactions is the molecularity and order same of the slowest step?

Discussion

7.	The limiting composition of f - block hydraides????
Answer» The limiting composition of f - block hydraides????

Discussion

8.	What happens when benzyl bromide is kept in acetone-water? Which reaction mechanism is followed?
Answer» What happens when benzyl bromide is kept in acetone-water? Which reaction mechanism is followed?

Discussion

9.	Which of the following is correct with respect to energy for multi-electron system? I.1s<2sII.2p<3pIII.3dxy=3dyzIV.3d>4s
Answer» Which of the following is correct with respect to energy for multi-electron system? $I . 1 s < 2 s I I .2 p < 3 p I I I . 3 d_{x y} = 3 d_{y z} I V . 3 d > 4 s$

9.

Which of the following is correct with respect to energy for multi-electron system? I.1s<2sII.2p<3pIII.3dxy=3dyzIV.3d>4s

Answer»

Which of the following is correct with respect to energy for multi-electron system?

$I . 1 s < 2 s I I .2 p < 3 p I I I . 3 d_{x y} = 3 d_{y z} I V . 3 d > 4 s$

Discussion

10.	31.Assertion :H-F forms stronger hydrogen bond than H2O. Reason:F is more electronegative than oxygen Is both statements correct and correct explanation or not
Answer» 31.Assertion :H-F forms stronger hydrogen bond than H2O. Reason:F is more electronegative than oxygen Is both statements correct and correct explanation or not

Discussion

11.	4. A solid AB has ZnS-type structure. If the edgelength of the unit cell is 400 pm and the radius ofion is 0.130 nm then the radius of A+ ion is1 43.2 pm
Answer» 4. A solid AB has ZnS-type structure. If the edgelength of the unit cell is 400 pm and the radius ofion is 0.130 nm then the radius of A+ ion is1 43.2 pm

Discussion

12.	What is effective number of atoms present in the unit cell?
Answer» What is effective number of atoms present in the unit cell?

Discussion

13.	Number of isomeric alkynes of C5H8 is
Answer» Number of isomeric alkynes of C₅H₈ is

Discussion

14.	Which of the following does not decolorise acidified aqueous solution of KMnO41. SO22. FeCl33. H2O24. FeSO4 Why can't Cl- of FeCl3 be oxidized by KMnO4 ?
Answer» Which of the following does not decolorise acidified aqueous solution of KMnO4 1. SO2 2. FeCl3 3. H2O2 4. FeSO4 Why can't Cl- of FeCl3 be oxidized by KMnO4 ?

Discussion

15.	Reaction 1 A\xrightarrow[{}]{}B rate cons†an t at T degree celsius is k,activation energy is Y Reaction 2 C\xrightarrow[{}]{}D rate cons†an t at T degree celsius is k and activation energy is Z both reactions start at same time in different containers at temperature T degree celsius .GIVEN that y>z , y and z are both positive values . if the temperature of both reaction is increased to 2T then the rate cons†an t becomes k1 and k2. then the relationship between k1 and k2(greater,lesser,equal
Answer» Reaction 1 A\xrightarrow[{}]{}B rate cons†an t at T degree celsius is k,activation energy is Y Reaction 2 C\xrightarrow[{}]{}D rate cons†an t at T degree celsius is k and activation energy is Z both reactions start at same time in different containers at temperature T degree celsius .GIVEN that y>z , y and z are both positive values . if the temperature of both reaction is increased to 2T then the rate cons†an t becomes k1 and k2. then the relationship between k1 and k2(greater,lesser,equal

Discussion

16.	The most stable complex ion is :
Answer» The most stable complex ion is :

Discussion

17.	24. What are the possible quantum numbers of 3 p-electrons?
Answer» 24. What are the possible quantum numbers of 3 p-electrons?

Discussion

18.	Calculate the number of oxygen atoms present in 88,g of CO2?what would be the weight of CO having same number of oxygen atoms.
Answer» Calculate the number of oxygen atoms present in 88,g of CO2?what would be the weight of CO having same number of oxygen atoms.

Discussion

19.	Anti ferromagnetic material possess:-
Answer» Anti ferromagnetic material possess:-

Discussion

20.	The compound which will not give positive carbylamine test is:
Answer» The compound which will not give positive carbylamine test is:

Discussion

21.	The product X and Y are respectively:
Answer» The product X and Y are respectively:

Discussion

22.	define virtual image.
Answer» define virtual image.

Discussion

23.	calculate the minimum and maximum wavelength of lyman series
Answer» calculate the minimum and maximum wavelength of lyman series

Discussion

24.	In the relation Y=aCos(wt-kx), the dimensional formula for k is. (,w is omega)
Answer» In the relation Y=aCos(wt-kx), the dimensional formula for k is. (,w is omega)

Discussion

25.	A CALORIMETER OF WATER EQUIVALENT 2g HAS 2g OF WATER AT 20 DEGREE CEL. AND 5g OF WATER AT 80 DEGREE CEL. FIND EQUILIBRIUM TEMPERATURE OF FINAL MIXTURE.
Answer» A CALORIMETER OF WATER EQUIVALENT 2g HAS 2g OF WATER AT 20 DEGREE CEL. AND 5g OF WATER AT 80 DEGREE CEL. FIND EQUILIBRIUM TEMPERATURE OF FINAL MIXTURE.

Discussion

26.	How many coulombs required to convert 1 mole of H2O to O2?
Answer» How many coulombs required to convert 1 mole of $H_{2} O$ to $O_{2}$ ?

Discussion

27.	43.In the neutralization process of H3PO4 and NaOH, the number of acid buffers formed will be- a. 2, b. 3, c. 4, d. 1
Answer» 43.In the neutralization process of $H_{3} P O_{4}$ and NaOH, the number of acid buffers formed will be- a. 2, b. 3, c. 4, d. 1

27.

43.In the neutralization process of H3PO4 and NaOH, the number of acid buffers formed will be- a. 2, b. 3, c. 4, d. 1

Answer»

43.In the neutralization process of $H_{3} P O_{4}$ and NaOH, the number of acid buffers formed will be-

a. 2,

b. 3,

c. 4,

d. 1

Discussion

28.	2 mol of zinc is dissolved in HClat 25∘C. The work done in an open vessel is:
Answer» 2 mol of zinc is dissolved in $H C l$ at $25^{\circ} C$ . The work done in an open vessel is:

Discussion

29.	what is the unit of normality?
Answer» what is the unit of normality?

Discussion

30.	Consider the following sequence of reaction:If electronic configuration of element X is [Ne]3s1, then which of the following order is incorrect regarding given enthalpies?
Answer» Consider the following sequence of reaction: If electronic configuration of element $X$ is $[N e] 3 s^{1}$ , then which of the following order is incorrect regarding given enthalpies?

Discussion

31.	Total number of cis−N−Mn−Cl bond angles (that is, Mn - N and Mn - Cl bonds in cis positions) present in a molecule of cis-[Mn(en)2Cl2] complex is (en=NH2CH2CH2NH2)
Answer» Total number of $c i s - N - M n - C l$ bond angles (that is, Mn - N and Mn - Cl bonds in cis positions) present in a molecule of cis- $[M n (e n)_{2} C l_{2}]$ complex is $(e n = N H_{2} C H_{2} C H_{2} N H_{2})$

Discussion

32.	10. Which of the following shows maximum number of isomers? (a)[Co(NH3)4Cl2] (b)[Ni(en)(NH3)4]+2 (c)[Ni(C204)(en)2]-2 (d)[Cr(SCN)2(NH3)4]+
Answer» 10. Which of the following shows maximum number of isomers? (a)[Co(NH3)4Cl2] (b)[Ni(en)(NH3)4]+2 (c)[Ni(C204)(en)2]-2 (d)[Cr(SCN)2(NH3)4]+

Discussion

33.	Arrange the following in decreasing rate in E2 reaction
Answer» Arrange the following in decreasing rate in $E 2$ reaction

Discussion

34.	Reaction of Benzyl Bromide with aqueous Sodium Hydroxide follows........... mechanism
Answer» Reaction of Benzyl Bromide with aqueous Sodium Hydroxide follows........... mechanism

Discussion

35.	What are nucleophile s ??
Answer» What are nucleophile s ??

Discussion

36.	The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be
Answer» The half-life of a radioactive nuclide is $100$ hours. The fraction of original activity that will remain after $150$ hours would be

Discussion

37.	The compound(s) that exhibit(s) geometrical isomerism or optical isomerism or both is(are):
Answer» The compound(s) that exhibit(s) geometrical isomerism or optical isomerism or both is(are):

Discussion

38.	For the homogeneous gas phase equilibrium 4NH3(g)+5O2(g)⇔4NO(g)+6H2O(g) the units of equilibrium constant ′K′C are
Answer» For the homogeneous gas phase equilibrium $4 N H_{3} (g) + 5 O_{2} (g) \Leftrightarrow 4 N O (g) + 6 H_{2} O (g)$ the units of equilibrium constant $^{'} K_{C}^{'}$ are

Discussion

39.	Identify the correct sequence of increasing number of π− bonds in structure of following molecules? (I) H2S2O6(II) H2SO3(III) H2S2O5
Answer» Identify the correct sequence of increasing number of $π -$ bonds in structure of following molecules? $(I) H_{2} S_{2} O_{6} (I I) H_{2} S O_{3} (I I I) H_{2} S_{2} O_{5}$

Discussion

40.	The statement that is not correct for the periodic classification of elements is
Answer» The statement that is not correct for the periodic classification of elements is

Discussion

41.	What is the maximum covalency of nitrogen and why?
Answer» What is the maximum covalency of nitrogen and why?

Discussion

42.	In trisethylenediamminecobalt (III) chloride, the coordination number of Co is
Answer» In trisethylenediamminecobalt (III) chloride, the coordination number of Co is

Discussion

43.	Ammonia gas is passed into water yielding a solution of density 0.93g/cm^3 and containing 18.6%NH3 by weight . The mass of NH3 per cc of solution is
Answer» Ammonia gas is passed into water yielding a solution of density 0.93g/cm^3 and containing 18.6%NH3 by weight . The mass of NH3 per cc of solution is

Discussion

44.	1.0 litre of N2 and 78 litre of O2 at the same temperature and pressure were mixed together. What is the relation between the masses of the two gases in the mixture?
Answer» 1.0 litre of $N_{2}$ and $\frac{7}{8}$ litre of $O_{2}$ at the same temperature and pressure were mixed together. What is the relation between the masses of the two gases in the mixture?

Discussion

45.

Predict the compounds given in column I with the shape given in column II and mark the correct option.Column IColumn II(a) XeF6(i) Distorted octahedral (b) XeO3(ii) Square planar(c) XeOF4(iii) Pyramidal (d) XeF4(iv) Square pyramidal

Answer»

Predict the compounds given in column I with the shape given in column II and mark the correct option.

Column I	Column II
(a) $X e F_{6}$	(i) Distorted octahedral
(b) $X e O_{3}$	(ii) Square planar
(c) $X e O F_{4}$	(iii) Pyramidal
(d) $X e F_{4}$	(iv) Square pyramidal

Discussion

46.	Displacement
Answer» Displacement

Discussion

47.	In electrolysis what are the positive and negative electrodes known as??
Answer» In electrolysis what are the positive and negative electrodes known as??

Discussion

48.	Na2O2 is
Answer» $N a_{2} O_{2}$ is

Discussion

49.	can particle be destroyed ?
Answer» can particle be destroyed ?

Discussion

50.	Find out what a first aid kit/box contains.
Answer» Find out what a first aid kit/box contains.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is

Identify Z in sequence of reactions :

10 g of ice at 0 ice at 00Cis mixed with m mass of water at 500 C. What is minimum value of mso that ice melts completely?( L = 80 cal/g and s = 1 cal/ g-0C)

If a physical quantity depends upon 3 or more physical quantities even if TWO OF THEM HAVE THE SAME DIMENSIONS, the formula cannot be derived why so?

How much sulphuric acid is obtained from 5kg of pure sulphur.( s8)

In the conplex reactions is the molecularity and order same of the slowest step?

The limiting composition of f - block hydraides????

What happens when benzyl bromide is kept in acetone-water? Which reaction mechanism is followed?

Which of the following is correct with respect to energy for multi-electron system? I.1s&lt;2sII.2p&lt;3pIII.3dxy=3dyzIV.3d&gt;4s

31.Assertion :H-F forms stronger hydrogen bond than H2O. Reason:F is more electronegative than oxygen Is both statements correct and correct explanation or not

4. A solid AB has ZnS-type structure. If the edgelength of the unit cell is 400 pm and the radius ofion is 0.130 nm then the radius of A+ ion is1 43.2 pm

What is effective number of atoms present in the unit cell?

Number of isomeric alkynes of C5H8 is

Which of the following does not decolorise acidified aqueous solution of KMnO41. SO22. FeCl33. H2O24. FeSO4 Why can't Cl- of FeCl3 be oxidized by KMnO4 ?

The most stable complex ion is :

24. What are the possible quantum numbers of 3 p-electrons?

Calculate the number of oxygen atoms present in 88,g of CO2?what would be the weight of CO having same number of oxygen atoms.

Anti ferromagnetic material possess:-

The compound which will not give positive carbylamine test is:

The product X and Y are respectively:

define virtual image.

calculate the minimum and maximum wavelength of lyman series

In the relation Y=aCos(wt-kx), the dimensional formula for k is. (,w is omega)

A CALORIMETER OF WATER EQUIVALENT 2g HAS 2g OF WATER AT 20 DEGREE CEL. AND 5g OF WATER AT 80 DEGREE CEL. FIND EQUILIBRIUM TEMPERATURE OF FINAL MIXTURE.

How many coulombs required to convert 1 mole of H2O to O2?

43.In the neutralization process of H3PO4 and NaOH, the number of acid buffers formed will be- a. 2, b. 3, c. 4, d. 1

2 mol of zinc is dissolved in HClat 25∘C. The work done in an open vessel is:

what is the unit of normality?

Consider the following sequence of reaction:If electronic configuration of element X is [Ne]3s1, then which of the following order is incorrect regarding given enthalpies?

Total number of cis−N−Mn−Cl bond angles (that is, Mn - N and Mn - Cl bonds in cis positions) present in a molecule of cis-[Mn(en)2Cl2] complex is (en=NH2CH2CH2NH2)

10. Which of the following shows maximum number of isomers? (a)[Co(NH3)4Cl2] (b)[Ni(en)(NH3)4]+2 (c)[Ni(C204)(en)2]-2 (d)[Cr(SCN)2(NH3)4]+

Arrange the following in decreasing rate in E2 reaction

Reaction of Benzyl Bromide with aqueous Sodium Hydroxide follows........... mechanism

What are nucleophile s ??

The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be

The compound(s) that exhibit(s) geometrical isomerism or optical isomerism or both is(are):

For the homogeneous gas phase equilibrium 4NH3(g)+5O2(g)⇔4NO(g)+6H2O(g) the units of equilibrium constant ′K′C are

Identify the correct sequence of increasing number of π− bonds in structure of following molecules? (I) H2S2O6(II) H2SO3(III) H2S2O5

The statement that is not correct for the periodic classification of elements is

What is the maximum covalency of nitrogen and why?

In trisethylenediamminecobalt (III) chloride, the coordination number of Co is

Ammonia gas is passed into water yielding a solution of density 0.93g/cm^3 and containing 18.6%NH3 by weight . The mass of NH3 per cc of solution is

1.0 litre of N2 and 78 litre of O2 at the same temperature and pressure were mixed together. What is the relation between the masses of the two gases in the mixture?

Predict the compounds given in column I with the shape given in column II and mark the correct option.Column IColumn II(a) XeF6(i) Distorted octahedral (b) XeO3(ii) Square planar(c) XeOF4(iii) Pyramidal (d) XeF4(iv) Square pyramidal

Displacement

In electrolysis what are the positive and negative electrodes known as??

Na2O2 is

can particle be destroyed ?

Find out what a first aid kit/box contains.

Which of the following is correct with respect to energy for multi-electron system? I.1s<2sII.2p<3pIII.3dxy=3dyzIV.3d>4s