46295 + Interview Questions in Chemistry

1.	1. Assertion : molten aluminium chloride when electrolysed using 0.1F deposits 0.1 gram equivalent of aluminium. Reason : Mass of substance deposited α quantity of electricity.
Answer» 1. Assertion : molten aluminium chloride when electrolysed using 0.1F deposits 0.1 gram equivalent of aluminium. Reason : Mass of substance deposited α quantity of electricity.

Discussion

2.	A vessel is filled with a mixture of oxygen and nitrogen. At what ratio of partial pressure will the mass of the gases be identical?
Answer» A vessel is filled with a mixture of oxygen and nitrogen. At what ratio of partial pressure will the mass of the gases be identical?

Discussion

3.	The spin only magnetic moment of [CoF6]3− is:
Answer» The spin only magnetic moment of $[C o F_{6}]^{3 -}$ is:

Discussion

4.	Three charges each Q are kept at three corners of a square as shown in figure and q by 2 is at one corner electric field at the centre
Answer» Three charges each Q are kept at three corners of a square as shown in figure and q by 2 is at one corner electric field at the centre

Discussion

5.	45. Electrovalent compounds are usually hard crystals yet brittle. Explain.
Answer» 45. Electrovalent compounds are usually hard crystals yet brittle. Explain.

Discussion

6.	Find offunction.
Answer» Find of function.

6.

Find offunction.

Answer»

Find
of
function.

Discussion

7.	Balmer gave an equation for wavelength of visible region of H-spectrum as λ=Kn2n2−4. Where n = principal quantum number of energy level, K = constant in terms of R (Rydberg constant).The value of K in term of R is:
Answer» Balmer gave an equation for wavelength of visible region of H-spectrum as $λ = \frac{K n^{2}}{n^{2} - 4}$ . Where n = principal quantum number of energy level, K = constant in terms of R (Rydberg constant). The value of K in term of R is:

Discussion

8.	propene on hydroformylation will give compound x which on further reduction will give compound y then y is 1)bu†an-1-ol 2)bu†an-1-al 3)propanol 4)t butyl alcohol
Answer» propene on hydroformylation will give compound x which on further reduction will give compound y then y is 1)bu†an-1-ol 2)bu†an-1-al 3)propanol 4)t butyl alcohol

Discussion

9.	If {}_a^bX emits a positron,two α and two β^- and in last one a is also emit and converts into {}_d^cY. correct relation i
Answer» If {}_a^bX emits a positron,two α and two β^- and in last one a is also emit and converts into {}_d^cY. correct relation i

Discussion

10.	Which of the following compounds are meso?
Answer» Which of the following compounds are meso?

Discussion

11.	Find the number of molecules among the following having two lone pair of electrons on central atom. I+3, XeF2, XeF4, H2O, NH−2, H2S, H2SO4, NF3
Answer» Find the number of molecules among the following having two lone pair of electrons on central atom. $I_{3}^{+}, X e F_{2}, X e F_{4}, H_{2} O, N H_{2}^{-}, H_{2} S, H_{2} S O_{4}, N F_{3}$

Discussion

12.	What is G-spot?
Answer» What is G-spot?

Discussion

13.	An ionized gas contains both positive and negative ions. If it is subjected to an electric field along x-axis and magnetic field along z axis the direction of motion of positive and negative ions
Answer» An ionized gas contains both positive and negative ions. If it is subjected to an electric field along x-axis and magnetic field along z axis the direction of motion of positive and negative ions

Discussion

14.	What is the difference between hexagonal close packing and cubic close packing??
Answer» What is the difference between hexagonal close packing and cubic close packing??

Discussion

15.	The equivalent emf of two cells (with ε1 > ε2) in series if we connect two negative electrodes of adjacent cells is
Answer» The equivalent emf of two cells (with ε₁ > ε₂) in series if we connect two negative electrodes of adjacent cells is

Discussion

16.	50 mL of a solution containing 10−3 mole of Ag+ is mixed with 50 mL of a 0.1 M HCl solution how much Ag+ remains in solution? (Ksp of AgCl=1.0×10−10)
Answer» $50 m L$ of a solution containing $10^{- 3}$ mole of $A g^{+}$ is mixed with $50 m L$ of a $0.1 M H C l$ solution how much $A g^{+}$ remains in solution? $(K_{s p} o f A g C l = 1.0 \times 10^{- 10})$

Discussion

17.	The enthalpy of atomisation of CH4 and C2H6 are 360 and 620 k cal mol−1 respectively. The C - C bond energy is expected to be ?
Answer» The enthalpy of atomisation of $C H_{4}$ and $C_{2} H_{6}$ are 360 and 620 k cal $m o l^{- 1}$ respectively. The C - C bond energy is expected to be ?

Discussion

18.	Why ethyne carbanion is less stable than alkoxide ion?
Answer» Why ethyne carbanion is less stable than alkoxide ion?

Discussion

19.	How many of the following statement(s) is/are incorrect regarding tetrahedral voids in fcc lattice? a) Each body diagonals contains 2 tetrahedral voidsb) Each tetrahedral void contributes 14th part to a unit cell c) One tetrahedral void is present at the body centre of unit cell d) Each face diagonals contains 2 tetrahedral voids
Answer» How many of the following statement(s) is/are incorrect regarding tetrahedral voids in fcc lattice? a) Each body diagonals contains 2 tetrahedral voids b) Each tetrahedral void contributes $\frac{1}{4^{t h}}$ part to a unit cell c) One tetrahedral void is present at the body centre of unit cell d) Each face diagonals contains 2 tetrahedral voids

Discussion

20.	Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or limestone (calcium carbonate)?
Answer» Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or limestone (calcium carbonate)?

Discussion

21.	The enthalpy of neutralisation of strong acid by a strong base is −57.32 kJmol−1. The enthalpy of formation of water is −285.84 kJmol−1. The enthalpy of formation of hydroxyl ion is :
Answer» The enthalpy of neutralisation of strong acid by a strong base is $- 57.32 k J m o l^{- 1}$ . The enthalpy of formation of water is $- 285.84 k J m o l^{- 1}$ . The enthalpy of formation of hydroxyl ion is :

Discussion

22.	When two halogen atoms are attached to same carbon atom then it is called as:
Answer» When two halogen atoms are attached to same carbon atom then it is called as:

Discussion

23.	The number of possible isomers (including stereoisomers) for the given compound is:
Answer» The number of possible isomers (including stereoisomers) for the given compound is:

Discussion

24.	Maximum number of hydrogen bonds per molecule in water is:
Answer» Maximum number of hydrogen bonds per molecule in water is:

Discussion

25.	Which one of the following complexes is an outer orbital complex
Answer» Which one of the following complexes is an outer orbital complex

Discussion

26.	In a set of reaction acetic acid yields a product [D]. The structure of [D] would be:CH3CH2COOHSOCl2−−−−→AC6H6−−−−−−→Anhy.AlCl3BHCN−−−→CHOH−−−→D
Answer» In a set of reaction acetic acid yields a product [D]. The structure of [D] would be: $C H_{3} C H_{2} C O O H S O C l_{2} - --- \to A C_{6} H_{6} - ----- \to A n h y . A l C l_{3} B H C N - -- \to C H O H - -- \to D$

Discussion

27.	The following images depict a ______. (Fill in the blanks using the characters given below.)
Answer» The following images depict a ______. (Fill in the blanks using the characters given below.)

Discussion

28.	22. What is meant by common ion effect??
Answer» 22. What is meant by common ion effect??

Discussion

29.	5 amperes is passed through a solution of zinc sulphate for 40 minutes. Find the amount of zinc deposited at the cathode. [CBSE PMT 1996]
Answer» 5 amperes is passed through a solution of zinc sulphate for 40 minutes. Find the amount of zinc deposited at the cathode. [CBSE PMT 1996]

29.

5 amperes is passed through a solution of zinc sulphate for 40 minutes. Find the amount of zinc deposited at the cathode. [CBSE PMT 1996]

Answer»

5 amperes is passed through a solution of zinc sulphate for 40 minutes. Find the amount of zinc deposited at the cathode.

[CBSE PMT 1996]

Discussion

30.	Choose the correct expression of Kc for reaction,4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)
Answer» Choose the correct expression of $K_{c}$ for reaction, $4 N H_{3} (g) + 5 O_{2} (g) ⇌ 4 N O (g) + 6 H_{2} O (g)$

Discussion

31.	Bond strength of Hydrogen halides decreases in the order:
Answer» Bond strength of Hydrogen halides decreases in the order:

Discussion

32.	50.How are d_{xy} and d_{x^2-y^2} orbitals related
Answer» 50.How are d_{xy} and d_{x^2-y^2} orbitals related

Discussion

33.	Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.
Answer» Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.

33.

Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.

Answer»

Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.

Discussion

34.	Why the electronic configuration of the chromium and copper is different from other ?
Answer» Why the electronic configuration of the chromium and copper is different from other ?

Discussion

35.	10 In a reaction A gives prospect, half life is found to be 120min when initial concentration of A is 0.008M , while it is 60 min when concentration of A is 0.032M .Then the unit of rate constant for this reaction is
Answer» 10 In a reaction A gives prospect, half life is found to be 120min when initial concentration of A is 0.008M , while it is 60 min when concentration of A is 0.032M .Then the unit of rate constant for this reaction is

Discussion

36.	what is refractive curved surface?
Answer» what is refractive curved surface?

Discussion

37.	On heating with HCl, acetone gives
Answer» On heating with HCl, acetone gives

Discussion

38.	∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is 1)0 2)<∆U° 3)>∆U° 4)=∆U°
Answer» ∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is 1)0 2)<∆U° 3)>∆U° 4)=∆U°

38.

∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is 1)0 2)<∆U° 3)>∆U° 4)=∆U°

Answer»

∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is

1)0

2)<∆U°

3)>∆U°

4)=∆U°

Discussion

39.	What is the oxidation number of chromium in K3[Cr(c2o4)].3h2o
Answer» What is the oxidation number of chromium in K3[Cr(c2o4)].3h2o

Discussion

40.	Which of the following are the methods of formation of carbene?
Answer» Which of the following are the methods of formation of carbene?

Discussion

41.	1)Lithium is the strongest reducing agent among all the akali metal inspite of high ionisation energy Give reason 2)Lithium forms only monoxide
Answer» 1)Lithium is the strongest reducing agent among all the akali metal inspite of high ionisation energy Give reason 2)Lithium forms only monoxide

41.

1)Lithium is the strongest reducing agent among all the akali metal inspite of high ionisation energy Give reason 2)Lithium forms only monoxide

Answer»

1)Lithium is the strongest reducing agent among all the akali metal inspite of high ionisation energy Give reason

2)Lithium forms only monoxide

Discussion

42.	Displacement current is set up between the plates of a capacitor when the potential difference across the plate is (1)Maximum (2)zero (3)Minimum (4)variyin
Answer» Displacement current is set up between the plates of a capacitor when the potential difference across the plate is (1)Maximum (2)zero (3)Minimum (4)variyin

Discussion

43.	Which of the following represents primary alcohol group
Answer» Which of the following represents primary alcohol group

Discussion

44.	What is the most stable oxidation state of the oxygen atom?
Answer» What is the most stable oxidation state of the oxygen atom?

Discussion

45.	when ethene reacts with bromine in aqueous solution of sodium chloride.the products obtained are
Answer» when ethene reacts with bromine in aqueous solution of sodium chloride.the products obtained are

Discussion

46.	71. A solution contains 1.2046×10^{24} HCl molecules in 1dm^3 of the solution. The strength of the solution is what?
Answer» 71. A solution contains 1.2046×10^{24} HCl molecules in 1dm^3 of the solution. The strength of the solution is what?

Discussion

47.	How many oxygen atoms are present in 50g of CaCo3 ?
Answer» How many oxygen atoms are present in 50g of $C a C o_{3}$ ?

Discussion

48.	The major product in following reaction is:
Answer» The major product in following reaction is:

Discussion

49.	Which of the followings represents a cis form?
Answer» Which of the followings represents a cis form?

Discussion

50.	The freezing point depression of 0.001 m Kx[Fe(CN)6] is 7.44×10−3 K .Determine the value of x.Given:(Kf)water=1.86 K kg mol−1 Assume complete ionisation of Kx[Fe(CN)6]
Answer» The freezing point depression of $0.001 m K_{x} [F e (C N)_{6}]$ is $7.44 \times 10^{- 3} K$ . Determine the value of x. Given: $(K_{f})_{w a t e r} = 1.86 K k g m o l^{- 1}$ Assume complete ionisation of $K_{x} [F e (C N)_{6}]$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

1. Assertion : molten aluminium chloride when electrolysed using 0.1F deposits 0.1 gram equivalent of aluminium. Reason : Mass of substance deposited α quantity of electricity.

A vessel is filled with a mixture of oxygen and nitrogen. At what ratio of partial pressure will the mass of the gases be identical?

The spin only magnetic moment of [CoF6]3− is:

Three charges each Q are kept at three corners of a square as shown in figure and q by 2 is at one corner electric field at the centre

45. Electrovalent compounds are usually hard crystals yet brittle. Explain.

Find offunction.

Balmer gave an equation for wavelength of visible region of H-spectrum as λ=Kn2n2−4. Where n = principal quantum number of energy level, K = constant in terms of R (Rydberg constant).The value of K in term of R is:

propene on hydroformylation will give compound x which on further reduction will give compound y then y is 1)bu†an-1-ol 2)bu†an-1-al 3)propanol 4)t butyl alcohol

If {}_a^bX emits a positron,two α and two β^- and in last one a is also emit and converts into {}_d^cY. correct relation i

Which of the following compounds are meso?

Find the number of molecules among the following having two lone pair of electrons on central atom. I+3, XeF2, XeF4, H2O, NH−2, H2S, H2SO4, NF3

What is G-spot?

An ionized gas contains both positive and negative ions. If it is subjected to an electric field along x-axis and magnetic field along z axis the direction of motion of positive and negative ions

What is the difference between hexagonal close packing and cubic close packing??

The equivalent emf of two cells (with ε1 &gt; ε2) in series if we connect two negative electrodes of adjacent cells is

50 mL of a solution containing 10−3 mole of Ag+ is mixed with 50 mL of a 0.1 M HCl solution how much Ag+ remains in solution? (Ksp of AgCl=1.0×10−10)

The enthalpy of atomisation of CH4 and C2H6 are 360 and 620 k cal mol−1 respectively. The C - C bond energy is expected to be ?

Why ethyne carbanion is less stable than alkoxide ion?

Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or limestone (calcium carbonate)?

The enthalpy of neutralisation of strong acid by a strong base is −57.32 kJmol−1. The enthalpy of formation of water is −285.84 kJmol−1. The enthalpy of formation of hydroxyl ion is :

When two halogen atoms are attached to same carbon atom then it is called as:

The number of possible isomers (including stereoisomers) for the given compound is:

Maximum number of hydrogen bonds per molecule in water is:

Which one of the following complexes is an outer orbital complex

In a set of reaction acetic acid yields a product [D]. The structure of [D] would be:CH3CH2COOHSOCl2−−−−→AC6H6−−−−−−→Anhy.AlCl3BHCN−−−→CHOH−−−→D

The following images depict a ______. (Fill in the blanks using the characters given below.)

22. What is meant by common ion effect??

5 amperes is passed through a solution of zinc sulphate for 40 minutes. Find the amount of zinc deposited at the cathode. [CBSE PMT 1996]

Choose the correct expression of Kc for reaction,4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)

Bond strength of Hydrogen halides decreases in the order:

50.How are d_{xy} and d_{x^2-y^2} orbitals related

Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.

Why the electronic configuration of the chromium and copper is different from other ?

10 In a reaction A gives prospect, half life is found to be 120min when initial concentration of A is 0.008M , while it is 60 min when concentration of A is 0.032M .Then the unit of rate constant for this reaction is

what is refractive curved surface?

On heating with HCl, acetone gives

∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is 1)0 2)&lt;∆U° 3)&gt;∆U° 4)=∆U°

What is the oxidation number of chromium in K3[Cr(c2o4)].3h2o

Which of the following are the methods of formation of carbene?

1)Lithium is the strongest reducing agent among all the akali metal inspite of high ionisation energy Give reason 2)Lithium forms only monoxide

Displacement current is set up between the plates of a capacitor when the potential difference across the plate is (1)Maximum (2)zero (3)Minimum (4)variyin

Which of the following represents primary alcohol group

What is the most stable oxidation state of the oxygen atom?

when ethene reacts with bromine in aqueous solution of sodium chloride.the products obtained are

71. A solution contains 1.2046×10^{24} HCl molecules in 1dm^3 of the solution. The strength of the solution is what?

How many oxygen atoms are present in 50g of CaCo3 ?

The major product in following reaction is:

Which of the followings represents a cis form?

The freezing point depression of 0.001 m Kx[Fe(CN)6] is 7.44×10−3 K .Determine the value of x.Given:(Kf)water=1.86 K kg mol−1 Assume complete ionisation of Kx[Fe(CN)6]

The equivalent emf of two cells (with ε1 > ε2) in series if we connect two negative electrodes of adjacent cells is

∆U° of combustion of CH4 (g)at certain temperature is -393kj/ mol.Then value of ∆H° is 1)0 2)<∆U° 3)>∆U° 4)=∆U°