46295 + Interview Questions in Chemistry

1.	The correct ground state configuration of Kr is:
Answer» The correct ground state configuration of Kr is:

Discussion

2.	What is the formula of Rhombic sulphur?
Answer» What is the formula of Rhombic sulphur?

Discussion

3.	How hydrogen is similar to carbon group
Answer» How hydrogen is similar to carbon group

Discussion

4.	The catalyst used in the polymerisation of isoprene is
Answer» The catalyst used in the polymerisation of isoprene is

Discussion

5.	A compound with molecular formula C4H40 has all four carbon atoms oxygen atom in the ring. It also has two double bonds is
Answer» A compound with molecular formula $C_{4} H_{4} 0$ has all four carbon atoms oxygen atom in the ring. It also has two double bonds is

Discussion

6.	For the reaction: AB(g)⇌A(g)+B(g), AB is 33% dissociated at a total pressure of P. Then,
Answer» For the reaction: $A B (g) ⇌ A (g) + B (g)$ , $A B$ is $33 %$ dissociated at a total pressure of P. Then,

Discussion

7.	The value of equilibrium constant for a feasible reaction is
Answer» The value of equilibrium constant for a feasible reaction is

Discussion

8.	For spontaneous reaction, the ΔG, equilibrium constant (k) and E0 cell are respectively.
Answer» For spontaneous reaction, the $Δ G$ , equilibrium constant (k) and $E^{0}$ cell are respectively.

Discussion

9.	In which of the following electrochemical cell overall cell reaction is : HgO(s)+H2(g)→Hg(ℓ)+H2O(ℓ)
Answer» In which of the following electrochemical cell overall cell reaction is : $H g O (s) + H_{2} (g) \to H g (ℓ) + H_{2} O (ℓ)$

Discussion

10.	In which of the following reactions H2O2 acts as a reducing agent? i) H2O2+2H++2e−→2H2O ii) H2O2+2e−→O2+2H+ iii) H2O2+2e−→2OH− iv) H2O2+2OH−−2e−→O2+2H2O
Answer» In which of the following reactions $H_{2} O_{2}$ acts as a reducing agent? i) $H_{2} O_{2} + 2 H^{+} + 2 e^{-} \to 2 H_{2} O$ ii) $H_{2} O_{2} + 2 e^{-} \to O_{2} + 2 H^{+}$ iii) $H_{2} O_{2} + 2 e^{-} \to 2 O H^{-}$ iv) $H_{2} O_{2} + 2 O H^{-} - 2 e^{-} \to O_{2} + 2 H_{2} O$

Discussion

11.	500 mL of a N5H2SO4 and 200 ml of N10NaOH are mixed. What will be the normality of H+ ions in the solution?
Answer» $500 mL$ of a $\frac{N}{5} H_{2} S O_{4}$ and $200 ml$ of $\frac{N}{10} N a O H$ are mixed. What will be the normality of $H^{+}$ ions in the solution?

Discussion

12.	If a gas is heated at constant pressure, its isothermal compressibility
Answer» If a gas is heated at constant pressure, its isothermal compressibility

Discussion

13.	For the equilibrium : LiCl.3NH3(s)⇌LiCl.NH3(s)+2NH3(g),Kp=9atm2 at 27∘ C. A 4.92 litre vessel contains 0.1 mole of LiCl.NH3. The number of moles of NH3 should be added to the flask at this temperature to drive the back ward reaction for completion is (0.2×y). The value of ‘y’ is ___
Answer» For the equilibrium : $L i C l .3 N H_{3} (s) ⇌ L i C l . N H_{3} (s) + 2 N H_{3} (g), K p = 9 a t m^{2} a t 27^{\circ} C$ . A 4.92 litre vessel contains 0.1 mole of $L i C l . N H_{3}$ . The number of moles of $N H_{3}$ should be added to the flask at this temperature to drive the back ward reaction for completion is $(0.2 \times y)$ . The value of ‘y’ is ___

Discussion

14.	The correct order of C – O bond length among CO,CO2−3,CO2 is
Answer» The correct order of C – O bond length among $C O, C O_{3}^{2 -}, C O_{2}$ is

Discussion

15.	Osmotic pressure of a solution containing 0.1 mole of solute per litre at 273K is (in atm)
Answer» Osmotic pressure of a solution containing 0.1 mole of solute per litre at 273K is (in atm)

Discussion

16.	Sprouting of potatoes in storage can be prevented by
Answer» Sprouting of potatoes in storage can be prevented by

Discussion

17.	If the apparent degree of ionisation of KCl (Mol. mass =74.5gmol–1) in water at 290 K is 0.49, the mass of KCl which must be made upto 1dm3 (1L) of aqueous solution to have the same osmotic pressure as the 2.7% by mass solution of glucose (density of the solution= 1.2 g/ml) at that temperature is
Answer» If the apparent degree of ionisation of $K C l$ (Mol. mass = $74.5 g m o l^{- 1}$ ) in water at 290 K is 0.49, the mass of $K C l$ which must be made upto $1 d m^{3}$ (1L) of aqueous solution to have the same osmotic pressure as the 2.7% by mass solution of glucose (density of the solution= 1.2 $g / m l$ ) at that temperature is

Discussion

18.	This compound reacts with TsCl and then gets reduced by LiAlH4 to form:
Answer» This compound reacts with TsCl and then gets reduced by $L i A l H_{4}$ to form:

Discussion

19.	The value of the rate constant for the gas phase reaction, 2NO2+F2→2NO2F is 38 dm3 mol−1s−1 at 300K. The order of the reaction is:
Answer» The value of the rate constant for the gas phase reaction, $2 N O_{2} + F_{2} \to 2 N O_{2} F$ is $38 d m^{3} m o l^{- 1} s^{- 1}$ at 300K. The order of the reaction is:

Discussion

20.	Under which situations can an amorphous substance change to crystalline form ?
Answer» Under which situations can an amorphous substance change to crystalline form ?

Discussion

21.	The decreasing order of bond angles in hydrides of chalcogens is:
Answer» The decreasing order of bond angles in hydrides of chalcogens is:

Discussion

22.	Among the following, the least thermally stable is
Answer» Among the following, the least thermally stable is

Discussion

23.	The major product 'B' of the reaction is:
Answer» The major product 'B' of the reaction is:

Discussion

24.	Tertiary butyl amine is
Answer» Tertiary butyl amine is

Discussion

25.	The correct order towards bond length is
Answer» The correct order towards bond length is

Discussion

26.	Which of the following are ring-chain isomers?
Answer» Which of the following are ring-chain isomers?

Discussion

27.	Silver chloride dissolves in hypo solution to form a complex with the formula
Answer» Silver chloride dissolves in hypo solution to form a complex with the formula

Discussion

28.	Using MOT, compare O+2 and O−2 species and choose the incorrect option
Answer» Using MOT, compare $O_{2}^{+}$ and $O_{2}^{-}$ species and choose the incorrect option

Discussion

29.	CaC2H2O−−→Ca(OH)2+A Ared hot iron tube−−−−−−−−−−→B CH3−CH2−CH2−OHSOCl2−−−−→C B+CAlCl3−−−−→anhyd.D D may be:
Answer» $C a C_{2} H_{2} O - - \to C a (O H)_{2} + A$ $A red hot iron tube - --------- \to B$ $C H_{3} - C H_{2} - C H_{2} - O H S O C l_{2} - --- \to C$ $B + C A l C l_{3} - --- \to a n h y d . D$ D may be:

Discussion

30.	Which of the following statements is not characteristic of free radical chain reactions?
Answer» Which of the following statements is not characteristic of free radical chain reactions?

30.

Which of the following statements is not characteristic of free radical chain reactions?

Answer»

Which of the following statements is not characteristic of free radical chain reactions?

Discussion

31.	α - Ketoglutarate dehydrogenase brings about
Answer» $α$ - Ketoglutarate dehydrogenase brings about

Discussion

32.	How many geometrical isomer(s) is are formed by [Ma2bcde]?
Answer» How many geometrical isomer(s) is are formed by $[M a_{2} b c d e]$ ?

Discussion

33.	Match the columns and choose the correct option I II(a)Phosphoenol pyruvate (PEP)p.6–carbon compound(b)Ribulose biphosphate (RuBP)q.2–carbon compound(c)Oxaloacetic acid (OAA)r.4–carbon compound(d)Acetyl CoAs.5–carbon compoundt.3–carbon compound
Answer» Match the columns and choose the correct option $\begin{matrix} I & II (a) & Phosphoenol pyruvate (PEP) & p. & 6-carbon compound (b) & Ribulose biphosphate (RuBP) & q. & 2-carbon compound (c) & Oxaloacetic acid (OAA) & r. & 4-carbon compound (d) & Acetyl CoA & s. & 5-carbon compound t. & 3-carbon compound \end{matrix}$

33.

Match the columns and choose the correct option I II(a)Phosphoenol pyruvate (PEP)p.6–carbon compound(b)Ribulose biphosphate (RuBP)q.2–carbon compound(c)Oxaloacetic acid (OAA)r.4–carbon compound(d)Acetyl CoAs.5–carbon compoundt.3–carbon compound

Answer»

Match the columns and choose the correct option

$\begin{matrix} I & II (a) & Phosphoenol pyruvate (PEP) & p. & 6-carbon compound (b) & Ribulose biphosphate (RuBP) & q. & 2-carbon compound (c) & Oxaloacetic acid (OAA) & r. & 4-carbon compound (d) & Acetyl CoA & s. & 5-carbon compound t. & 3-carbon compound \end{matrix}$

Discussion

34.	Glucose when heated with CH3OH in presence of dry HCl gas gives glucosides because it contains[CPMT 1982, 85]
Answer» Glucose when heated with CH₃OH in presence of dry HCl gas gives glucosides because it contains [CPMT 1982, 85]

34.

Glucose when heated with CH3OH in presence of dry HCl gas gives glucosides because it contains[CPMT 1982, 85]

Answer»

Glucose when heated with CH₃OH in presence of dry HCl gas gives glucosides because it contains

[CPMT 1982, 85]

Discussion

35.	Why ozone is sparingly soluble in water while it dissolves in organic solvents?
Answer» Why ozone is sparingly soluble in water while it dissolves in organic solvents?

Discussion

36.	A chloride dissolves appreciably in cold water when placed on a Pt wire in Bunsen flame, no distinctive colour is noticed. The cation is
Answer» A chloride dissolves appreciably in cold water when placed on a Pt wire in Bunsen flame, no distinctive colour is noticed. The cation is

Discussion

37.	The following sequence of reaction occurs in commercial production of aqueous nitric acid. 4NH3(g)+5O2(g)→4NO(g)+6H2O(l) ΔH=−904 kJ ...(1) 2NO(g)+O2(g)→2NO2(g) ΔH=−112 kJ ...(2) 3NO2(g)+H2O(l)→2HNO3(aq)+NO(g) ΔH=−140 kJ ...(3) Determine the magnitude of total heat (in kJ/mole) liberated at constant pressure for the production of exactly 1 mole of aqueous nitric acid by this process
Answer» The following sequence of reaction occurs in commercial production of aqueous nitric acid. $4 N H_{3} (g) + 5 O_{2} (g) \to 4 N O (g) + 6 H_{2} O (l) Δ H = - 904 k J . . . (1)$ $2 N O (g) + O_{2} (g) \to 2 N O_{2} (g) Δ H = - 112 k J . . . (2)$ $3 N O_{2} (g) + H_{2} O (l) \to 2 H N O_{3} (a q) + N O (g) Δ H = - 140 k J . . . (3)$ Determine the magnitude of total heat $(i n kJ/mole)$ liberated at constant pressure for the production of exactly 1 mole of aqueous nitric acid by this process

Discussion

38.	Which of the following compound will make precipitate most readily with AgNO3 [CPMT 1992]
Answer» Which of the following compound will make precipitate most readily with AgNO₃ [CPMT 1992]

38.

Which of the following compound will make precipitate most readily with AgNO3 [CPMT 1992]

Answer»

Which of the following compound will make precipitate most readily with AgNO₃

[CPMT 1992]

Discussion

39.	Define the following: (a) Anionic detergents (b) Limited spectrum antibiotics (c) Antiseptics
Answer» Define the following: (a) Anionic detergents (b) Limited spectrum antibiotics (c) Antiseptics

Discussion

40.	The number of electrons required to reduce chromium completely in Cr2O72− to Cr3+ in acidic medium, is
Answer» The number of electrons required to reduce chromium completely in Cr $_{2}$ O $_{7}$ $^{2 -}$ to Cr $^{3 +}$ in acidic medium, is

Discussion

41.	P4O10 undergoes complete and violent hydrolysis to give __ acid.
Answer» $P_{4} O_{10}$ undergoes complete and violent hydrolysis to give __ acid.

Discussion

42.	Electrons of which subshell do not participate in bonding due to inert pair effect:
Answer» Electrons of which subshell do not participate in bonding due to inert pair effect:

Discussion

43.	The eyes of a certain member of the reptile family pass a visual signal to the brain when the visual receptors are struck by photons of wavelength 850 nm. If a total energy of 3.15×10–14 J isrequired to trip the signal, the minimum number of photons that must strike the receptor is x×105photons, find x. (h=6.6×10–34 J s). Report the value upto two decimal.
Answer» The eyes of a certain member of the reptile family pass a visual signal to the brain when the visual receptors are struck by photons of wavelength $850 nm$ . If a total energy of $3.15 \times 10^{- 14} J$ isrequired to trip the signal, the minimum number of photons that must strike the receptor is $x \times 10^{5}$ photons, find $x$ . $(h = 6.6 \times 10^{- 34} J s)$ . Report the value upto two decimal.

Discussion

44.	The total number of lone pairs of electrons present in N2O3 is
Answer» The total number of lone pairs of electrons present in $N_{2} O_{3}$ is

Discussion

45.	A bell mouth entry in front of an air-compressor is to be calibrated for discharge through it in terms of height h of water in a single tube manometer as shown. If h = 0.2 m and the density of air is 1.2 kg/m3, then the discharge of air through the compressor is..
Answer» A bell mouth entry in front of an air-compressor is to be calibrated for discharge through it in terms of height h of water in a single tube manometer as shown. If h = 0.2 m and the density of air is 1.2 $k g / m^{3}$ , then the discharge of air through the compressor is..

Discussion

46.	Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?
Answer» Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?

Discussion

47.	The wave function of a molecular orbital formed by reinforcing of wave functions of ΨA and ΨB of atomic orbitals A and B is represented as a) Φ= ΨA + ΨBb) Φ= ΨA - ΨBc) Φ= ΨA * ΨBd) None of the above
Answer» The wave function of a molecular orbital formed by reinforcing of wave functions of ΨA and ΨB of atomic orbitals A and B is represented as a) Φ= ΨA + ΨB b) Φ= ΨA - ΨB c) Φ= ΨA * ΨB d) None of the above

47.

The wave function of a molecular orbital formed by reinforcing of wave functions of ΨA and ΨB of atomic orbitals A and B is represented as a) Φ= ΨA + ΨBb) Φ= ΨA - ΨBc) Φ= ΨA * ΨBd) None of the above

Answer»

The wave function of a molecular orbital formed by reinforcing of wave functions of ΨA and ΨB of atomic orbitals A and B is represented as

a) Φ= ΨA + ΨB

b) Φ= ΨA - ΨB

c) Φ= ΨA * ΨB

d) None of the above

Discussion

48.	Which of the following oxides is amphoteric?
Answer» Which of the following oxides is amphoteric?

Discussion

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

Discussion

50.	Draw the structures of the following: (a) H2SO3 (b) HClO3
Answer» Draw the structures of the following: (a) $H_{2} S O_{3}$ (b) $H C l O_{3}$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The correct ground state configuration of Kr is:

What is the formula of Rhombic sulphur?

How hydrogen is similar to carbon group

The catalyst used in the polymerisation of isoprene is

A compound with molecular formula C4H40 has all four carbon atoms oxygen atom in the ring. It also has two double bonds is

For the reaction: AB(g)⇌A(g)+B(g), AB is 33% dissociated at a total pressure of P. Then,

The value of equilibrium constant for a feasible reaction is

For spontaneous reaction, the ΔG, equilibrium constant (k) and E0 cell are respectively.

In which of the following electrochemical cell overall cell reaction is : HgO(s)+H2(g)→Hg(ℓ)+H2O(ℓ)

In which of the following reactions H2O2 acts as a reducing agent? i) H2O2+2H++2e−→2H2O ii) H2O2+2e−→O2+2H+ iii) H2O2+2e−→2OH− iv) H2O2+2OH−−2e−→O2+2H2O

500 mL of a N5H2SO4 and 200 ml of N10NaOH are mixed. What will be the normality of H+ ions in the solution?

If a gas is heated at constant pressure, its isothermal compressibility

For the equilibrium : LiCl.3NH3(s)⇌LiCl.NH3(s)+2NH3(g),Kp=9atm2 at 27∘ C. A 4.92 litre vessel contains 0.1 mole of LiCl.NH3. The number of moles of NH3 should be added to the flask at this temperature to drive the back ward reaction for completion is (0.2×y). The value of ‘y’ is ___

The correct order of C – O bond length among CO,CO2−3,CO2 is

Osmotic pressure of a solution containing 0.1 mole of solute per litre at 273K is (in atm)

Sprouting of potatoes in storage can be prevented by

If the apparent degree of ionisation of KCl (Mol. mass =74.5gmol–1) in water at 290 K is 0.49, the mass of KCl which must be made upto 1dm3 (1L) of aqueous solution to have the same osmotic pressure as the 2.7% by mass solution of glucose (density of the solution= 1.2 g/ml) at that temperature is

This compound reacts with TsCl and then gets reduced by LiAlH4 to form:

The value of the rate constant for the gas phase reaction, 2NO2+F2→2NO2F is 38 dm3 mol−1s−1 at 300K. The order of the reaction is:

Under which situations can an amorphous substance change to crystalline form ?

The decreasing order of bond angles in hydrides of chalcogens is:

Among the following, the least thermally stable is

The major product 'B' of the reaction is:

Tertiary butyl amine is

The correct order towards bond length is

Which of the following are ring-chain isomers?

Silver chloride dissolves in hypo solution to form a complex with the formula

Using MOT, compare O+2 and O−2 species and choose the incorrect option

CaC2H2O−−→Ca(OH)2+A Ared hot iron tube−−−−−−−−−−→B CH3−CH2−CH2−OHSOCl2−−−−→C B+CAlCl3−−−−→anhyd.D D may be:

Which of the following statements is not characteristic of free radical chain reactions?

α - Ketoglutarate dehydrogenase brings about

How many geometrical isomer(s) is are formed by [Ma2bcde]?

Match the columns and choose the correct option I II(a)Phosphoenol pyruvate (PEP)p.6–carbon compound(b)Ribulose biphosphate (RuBP)q.2–carbon compound(c)Oxaloacetic acid (OAA)r.4–carbon compound(d)Acetyl CoAs.5–carbon compoundt.3–carbon compound

Glucose when heated with CH3OH in presence of dry HCl gas gives glucosides because it contains[CPMT 1982, 85]

Why ozone is sparingly soluble in water while it dissolves in organic solvents?

A chloride dissolves appreciably in cold water when placed on a Pt wire in Bunsen flame, no distinctive colour is noticed. The cation is

Which of the following compound will make precipitate most readily with AgNO3 [CPMT 1992]

Define the following: (a) Anionic detergents (b) Limited spectrum antibiotics (c) Antiseptics

The number of electrons required to reduce chromium completely in Cr2O72− to Cr3+ in acidic medium, is

P4O10 undergoes complete and violent hydrolysis to give __ acid.

Electrons of which subshell do not participate in bonding due to inert pair effect:

The total number of lone pairs of electrons present in N2O3 is

A bell mouth entry in front of an air-compressor is to be calibrated for discharge through it in terms of height h of water in a single tube manometer as shown. If h = 0.2 m and the density of air is 1.2 kg/m3, then the discharge of air through the compressor is..

Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?

The wave function of a molecular orbital formed by reinforcing of wave functions of ΨA and ΨB of atomic orbitals A and B is represented as a) Φ= ΨA + ΨBb) Φ= ΨA - ΨBc) Φ= ΨA * ΨBd) None of the above

Which of the following oxides is amphoteric?

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

Draw the structures of the following: (a) H2SO3 (b) HClO3