46295 + Interview Questions in Chemistry

1.	Cut off potentials for a metal in photo electric effect for light of wavelengths λ1, λ2 and λ3 is found to be V1, V2 and V3volts. If V1, V2 and V3 are in arithmetic progression then λ1, λ2 and λ3 will be in
Answer» Cut off potentials for a metal in photo electric effect for light of wavelengths λ1, λ2 and λ3 is found to be V1, V2 and V3volts. If V1, V2 and V3 are in arithmetic progression then λ1, λ2 and λ3 will be in

Discussion

2.	For the reaction, A(g)+2B(g)⇌2C(g), the rate constants for the forward and the reverse reactions are 1×10−4 and 2.5×10−2 respectively. The value of equilibrium constant, K for the reaction would be
Answer» For the reaction, $A_{(g)} + 2 B_{(g)} ⇌ 2 C_{(g)},$ the rate constants for the forward and the reverse reactions are $1 \times 10^{- 4}$ and $2.5 \times 10^{- 2}$ respectively. The value of equilibrium constant, K for the reaction would be

Discussion

3.	IUPAC name of the compound is 5-Hydroxycyclopent-2-enone.What is the structure of the compoun
Answer» IUPAC name of the compound is 5-Hydroxycyclopent-2-enone.What is the structure of the compoun

Discussion

4.	is CsI have more lattice energy then CsF? how
Answer» is CsI have more lattice energy then CsF? how

Discussion

5.	What is the mass of sodium acetate required to make 200ml of 0.245 molar aqueous solution? (molar mass of CH3COONa=82g/mol)
Answer» What is the mass of sodium acetate required to make 200ml of 0.245 molar aqueous solution? (molar mass of CH3COONa=82g/mol)

Discussion

6.	What is r° called as ?
Answer» What is r° called as ?

Discussion

7.	1-ethylpropanone structure
Answer» 1-ethylpropanone structure

Discussion

8.	10.The order of covalent radius of N in (a) N2H4. (b) HN3. and (c). N2 is (1) (a) > (b) > (c) (2) (a) > (b) = (c) (3) (a) > (b) > (c). (3) (a) < (b) = ©
Answer» 10.The order of covalent radius of N in (a) N2H4. (b) HN3. and (c). N2 is (1) (a) > (b) > (c) (2) (a) > (b) = (c) (3) (a) > (b) > (c). (3) (a) < (b) = ©

Discussion

9.	4. What will be the products when 1Bromo-2,2dimethylcyclohexane is treated with : i) NaOMe/CH3OH ii)EtOH/ethanolic KOH (heat) (Will there be any difference in the products? If so, why? )
Answer» 4. What will be the products when 1Bromo-2,2dimethylcyclohexane is treated with : i) NaOMe/CH3OH ii)EtOH/ethanolic KOH (heat) (Will there be any difference in the products? If so, why? )

Discussion

10.	What is the location of voids in a crystal?
Answer» What is the location of voids in a crystal?

Discussion

11.	20.The correct order of first ionization potential among following elements, Be, B,(1) B
Answer» 20.The correct order of first ionization potential among following elements, Be, B,(1) B

Discussion

12.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

12.

The major product of the following reaction is:

Answer»

The major product of the following reaction is:

Discussion

13.	Which of the following compound will undergo self-aldol condensation in the presence of cold dilute alkali?
Answer» Which of the following compound will undergo self-aldol condensation in the presence of cold dilute alkali?

Discussion

14.	The equilibrium constant for a reaction is 10. What will be the value of ΔGθ? R = 8.314 JK–1 mol–1, T = 300 K.
Answer» The equilibrium constant for a reaction is 10. What will be the value of ΔG^θ? R = 8.314 JK^–1 mol^–1, T = 300 K.

Discussion

15.	Name the structure of silicates in which three oxygen atoms of [SiO4]− are shared:
Answer» Name the structure of silicates in which three oxygen atoms of $[S i O_{4}]^{-}$ are shared:

Discussion

16.	2. what does vicinal and geminal carboxylic acids produce on heating?
Answer» 2. what does vicinal and geminal carboxylic acids produce on heating?

Discussion

17.	The metal ion which always have distorted octahedron(1)Fe3+ (2)Co3+ (3)Ni2+ (4)Cu+
Answer» The metal ion which always have distorted octahedron (1)Fe3+ (2)Co3+ (3)Ni2+ (4)Cu+

Discussion

18.	The stability of +1 oxidation state increases in the sequence:
Answer» The stability of $+ 1$ oxidation state increases in the sequence:

Discussion

19.	10 L of a monoatomic ideal gas at 0 oC and 10 atm is suddenly released to 1 atm pressure and the gas is expanded adiabatically against the constant pressure. Find the final volume (L) of the gas.
Answer» $10 L$ of a monoatomic ideal gas at $0^{o} C$ and $10 atm$ is suddenly released to $1 atm$ pressure and the gas is expanded adiabatically against the constant pressure. Find the final volume $(L)$ of the gas.

Discussion

20.	What is the mass of precipitate formed when50mL of 16.9%(w/v) solution of AgNO3 is mixed with 50mL of (w/v) NaCl solution?
Answer» What is the mass of precipitate formed when50mL of 16.9%(w/v) solution of AgNO3 is mixed with 50mL of (w/v) NaCl solution?

Discussion

21.	4. Why the displacement reactions of chlorine, bromine and iodine using fluorine are not generally carried out in aqueous solution?
Answer» 4. Why the displacement reactions of chlorine, bromine and iodine using fluorine are not generally carried out in aqueous solution?

Discussion

22.	Write the name of the cell which is generally used in inverters. Write the reactions taking place at the anode and the cathode of this cell.
Answer» Write the name of the cell which is generally used in inverters. Write the reactions taking place at the anode and the cathode of this cell.

Discussion

23.	2 - acetoxy benzoic acid is
Answer» 2 - acetoxy benzoic acid is

Discussion

24.	H2SO4 is not used during reaction of alcohols with KI because H2SO4 oxidizes HI to I2.But why this does not happen when H2SO4 react with KBr?Also why H3PO4 not used with KBr?
Answer» H2SO4 is not used during reaction of alcohols with KI because H2SO4 oxidizes HI to I2. But why this does not happen when H2SO4 react with KBr? Also why H3PO4 not used with KBr?

Discussion

25.	What is the function of neck in a spem?
Answer» What is the function of neck in a spem?

Discussion

26.	Which of the following isomerism is exhibited in nitro-ethane?
Answer» Which of the following isomerism is exhibited in nitro-ethane?

Discussion

27.	A gas exerts a pressure of 0.892 atm in a 5.00 L container at 15º C. The density of the gas is 1.22 g/L. What is the molecular weight of the gas?
Answer» A gas exerts a pressure of 0.892 atm in a 5.00 L container at 15º C. The density of the gas is 1.22 g/L. What is the molecular weight of the gas?

Discussion

28.	The volume of polyatomic gas dalta=4/3 compressed adiababatically to 1/8th of the original volume.if the original pressure of the gas is Po the new pressure will v
Answer» The volume of polyatomic gas dalta=4/3 compressed adiababatically to 1/8th of the original volume.if the original pressure of the gas is Po the new pressure will v

Discussion

29.	What is the meaning and physical significance of lattice energy and solvation energy.
Answer» What is the meaning and physical significance of lattice energy and solvation energy.

Discussion

30.	0.1 mole arsenic acid (H3AsO4) is dissolved in a 1L buffer solution of pH=8. Which of the following options is/are correct? For arsenic acid: Ka1=2.5×10−4,Ka2=5×10−8,Ka3=2×10−13. (‘
Answer» $0.1$ mole arsenic acid $(H_{3} A s O_{4})$ is dissolved in a 1L buffer solution of $p H = 8$ . Which of the following options is/are correct? For arsenic acid: $K a_{1} = 2.5 \times 10^{- 4}, K a_{2} = 5 \times 10^{- 8}, K a_{3} = 2 \times 10^{- 13}$ . (‘<<’ sign denotes that the higher concentration is 100 times greater than the lower one or more)

Discussion

31.	Deduce a relationship between volume and pressure for a given mass of a gas at a constant temperature.
Answer» Deduce a relationship between volume and pressure for a given mass of a gas at a constant temperature.

Discussion

32.	Chlorination of benzene in the presence of a halogen carrier is an example of:
Answer» Chlorination of benzene in the presence of a halogen carrier is an example of:

Discussion

33.	Aluminum is extracted from alumina (Al2O3) by electrolytes of a molten mixture of
Answer» Aluminum is extracted from alumina ( $A l_{2} O_{3}$ ) by electrolytes of a molten mixture of

Discussion

34.	In the given reaction CH3CH2CO−CH3CF3COOOH−−−−−−−−→(X),(X) will be:
Answer» In the given reaction $C H_{3} C H_{2} C O - C H_{3} C F_{3} C O O O H - ------- \to (X)$ , (X) will be:

Discussion

35.	Question 20Observe the circuit given in the figure.Boojho set up this circuit for purification of copper. What will be the nature of –(i) plate A (ii) plate B (iii) the solution. Explain the process of purification.
Answer» Question 20 Observe the circuit given in the figure. Boojho set up this circuit for purification of copper. What will be the nature of – (i) plate A (ii) plate B (iii) the solution. Explain the process of purification.

Discussion

36.	The molar conductivities at infinite dilution of AgNO3 and NaCl are 116.0 and 110.0 Scm2mol−1 respectively. The conductivity of AgCl in water is 8.42×10−6 Scm–1 and of water used is 1.16×10−6 Scm–1. The solubility of AgCl is 6.0×10−5mol/L. Find the molar conductivity at infinite dilution of NaNO3 (in Scm−1mol−1) in the solution.
Answer» The molar conductivities at infinite dilution of $A g N O_{3}$ and $N a C l$ are 116.0 and 110.0 $S c m^{2} m o l^{- 1}$ respectively. The conductivity of $A g C l$ in water is $8.42 \times 10^{- 6} S c m^{- 1}$ and of water used is $1.16 \times 10^{- 6} S c m^{- 1}$ . The solubility of $A g C l$ is $6.0 \times 10^{- 5} m o l / L$ . Find the molar conductivity at infinite dilution of $N a N O_{3}$ ( $i n S c m^{- 1} m o l^{- 1}$ ) in the solution.

Discussion

37.	A body of mass 10 kg is displaced from pointA(2, 1, 3) to point B(3, 3, 4) under the effect offorce of magnitude 20 N in the direction of6i+ 8j. Calculate W.D. by the force :-(2) 20\sqrt6J (3) 44 J(4) Zero(1) 22 J
Answer» A body of mass 10 kg is displaced from pointA(2, 1, 3) to point B(3, 3, 4) under the effect offorce of magnitude 20 N in the direction of6i+ 8j. Calculate W.D. by the force :-(2) 20\sqrt6J (3) 44 J(4) Zero(1) 22 J

Discussion

38.	0.1M weak acid HA ph=3 is titrated with 0.05M NaOh solution.calculate the ph wen 25% of acid has beem neutralised.
Answer» 0.1M weak acid HA ph=3 is titrated with 0.05M NaOh solution.calculate the ph wen 25% of acid has beem neutralised.

Discussion

39.	Thorium with atomic number 92 and mass number 238 disintegrates to give Pb with atomic number 82 and mass number 206. How many alpha and beta particles are emitted during this process?
Answer» Thorium with atomic number 92 and mass number 238 disintegrates to give Pb with atomic number 82 and mass number 206. How many alpha and beta particles are emitted during this process?

Discussion

40.	the hardness of water is caused by; a. all of the these b. Mg(HCo3)2 c. CaCl2 d. CaSo4
Answer» the hardness of water is caused by; a. all of the these b. Mg(HCo3)2 c. CaCl2 d. CaSo4

Discussion

41.	Why does water expand when cooled while gases contract?
Answer» Why does water expand when cooled while gases contract?

Discussion

42.	33. What is emissions spectra?
Answer» 33. What is emissions spectra?

Discussion

43.	liquid flows through two capillary tubes connected in series their length are L and 2L and radius r and 2r respectively the pressure difference across the first and second tube are in the ratio
Answer» liquid flows through two capillary tubes connected in series their length are L and 2L and radius r and 2r respectively the pressure difference across the first and second tube are in the ratio

Discussion

44.	0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction. S8+ O2 ----> SO2
Answer» 0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction. S₈+ O₂ ----> SO2

44.

0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction. S8+ O2 ----> SO2

Answer»

0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction.

S₈+ O₂ ----> SO2

Discussion

45.	What is formula for product of GP upto infinite and n terms?
Answer» What is formula for product of GP upto infinite and n terms?

Discussion

46.	At a given place a mercury barometer records a pressure of 0.70mm of hg. What would ve the height of water column if mercury in barometer is replaced by water? Take density of mercury to be 13.6*10kg/m raise to power cube
Answer» At a given place a mercury barometer records a pressure of 0.70mm of hg. What would ve the height of water column if mercury in barometer is replaced by water? Take density of mercury to be 13.6*10kg/m raise to power cube

Discussion

47.	What is the hybridization of the carbocation ch3ch2+
Answer» What is the hybridization of the carbocation ch3ch2+

Discussion

48.	In a hydrogen atom, if the energy of an electron in ground state is −13.6 eV, then its energy in the 2nd excited state is
Answer» In a hydrogen atom, if the energy of an electron in ground state is $- 13.6 eV$ , then its energy in the 2nd excited state is

Discussion

49.	Hydrolysis of CH_3COONa increases when it is mixed with the solution of-1)CH_3COOH, 2)NaOH, 3)HCl, 4)NH_4OH .
Answer» Hydrolysis of CH_3COONa increases when it is mixed with the solution of-1)CH_3COOH, 2)NaOH, 3)HCl, 4)NH_4OH .

Discussion

50.	In which reaction, incorrect product is formed?
Answer» In which reaction, incorrect product is formed?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Cut off potentials for a metal in photo electric effect for light of wavelengths λ1, λ2 and λ3 is found to be V1, V2 and V3volts. If V1, V2 and V3 are in arithmetic progression then λ1, λ2 and λ3 will be in

For the reaction, A(g)+2B(g)⇌2C(g), the rate constants for the forward and the reverse reactions are 1×10−4 and 2.5×10−2 respectively. The value of equilibrium constant, K for the reaction would be

IUPAC name of the compound is 5-Hydroxycyclopent-2-enone.What is the structure of the compoun

is CsI have more lattice energy then CsF? how

What is the mass of sodium acetate required to make 200ml of 0.245 molar aqueous solution? (molar mass of CH3COONa=82g/mol)

What is r° called as ?

1-ethylpropanone structure

10.The order of covalent radius of N in (a) N2H4. (b) HN3. and (c). N2 is (1) (a) > (b) > (c) (2) (a) > (b) = (c) (3) (a) > (b) > (c). (3) (a) < (b) = ©

4. What will be the products when 1Bromo-2,2dimethylcyclohexane is treated with : i) NaOMe/CH3OH ii)EtOH/ethanolic KOH (heat) (Will there be any difference in the products? If so, why? )

What is the location of voids in a crystal?

20.The correct order of first ionization potential among following elements, Be, B,(1) B

The major product of the following reaction is:

Which of the following compound will undergo self-aldol condensation in the presence of cold dilute alkali?

The equilibrium constant for a reaction is 10. What will be the value of ΔGθ? R = 8.314 JK–1 mol–1, T = 300 K.

Name the structure of silicates in which three oxygen atoms of [SiO4]− are shared:

2. what does vicinal and geminal carboxylic acids produce on heating?

The metal ion which always have distorted octahedron(1)Fe3+ (2)Co3+ (3)Ni2+ (4)Cu+

The stability of +1 oxidation state increases in the sequence:

10 L of a monoatomic ideal gas at 0 oC and 10 atm is suddenly released to 1 atm pressure and the gas is expanded adiabatically against the constant pressure. Find the final volume (L) of the gas.

What is the mass of precipitate formed when50mL of 16.9%(w/v) solution of AgNO3 is mixed with 50mL of (w/v) NaCl solution?

4. Why the displacement reactions of chlorine, bromine and iodine using fluorine are not generally carried out in aqueous solution?

Write the name of the cell which is generally used in inverters. Write the reactions taking place at the anode and the cathode of this cell.

2 - acetoxy benzoic acid is

H2SO4 is not used during reaction of alcohols with KI because H2SO4 oxidizes HI to I2.But why this does not happen when H2SO4 react with KBr?Also why H3PO4 not used with KBr?

What is the function of neck in a spem?

Which of the following isomerism is exhibited in nitro-ethane?

A gas exerts a pressure of 0.892 atm in a 5.00 L container at 15º C. The density of the gas is 1.22 g/L. What is the molecular weight of the gas?

The volume of polyatomic gas dalta=4/3 compressed adiababatically to 1/8th of the original volume.if the original pressure of the gas is Po the new pressure will v

What is the meaning and physical significance of lattice energy and solvation energy.

0.1 mole arsenic acid (H3AsO4) is dissolved in a 1L buffer solution of pH=8. Which of the following options is/are correct? For arsenic acid: Ka1=2.5×10−4,Ka2=5×10−8,Ka3=2×10−13. (‘

Deduce a relationship between volume and pressure for a given mass of a gas at a constant temperature.

Chlorination of benzene in the presence of a halogen carrier is an example of:

Aluminum is extracted from alumina (Al2O3) by electrolytes of a molten mixture of

In the given reaction CH3CH2CO−CH3CF3COOOH−−−−−−−−→(X),(X) will be:

Question 20Observe the circuit given in the figure.Boojho set up this circuit for purification of copper. What will be the nature of –(i) plate A (ii) plate B (iii) the solution. Explain the process of purification.

A body of mass 10 kg is displaced from pointA(2, 1, 3) to point B(3, 3, 4) under the effect offorce of magnitude 20 N in the direction of6i+ 8j. Calculate W.D. by the force :-(2) 20\sqrt6J (3) 44 J(4) Zero(1) 22 J

0.1M weak acid HA ph=3 is titrated with 0.05M NaOh solution.calculate the ph wen 25% of acid has beem neutralised.

Thorium with atomic number 92 and mass number 238 disintegrates to give Pb with atomic number 82 and mass number 206. How many alpha and beta particles are emitted during this process?

the hardness of water is caused by; a. all of the these b. Mg(HCo3)2 c. CaCl2 d. CaSo4

Why does water expand when cooled while gases contract?

33. What is emissions spectra?

liquid flows through two capillary tubes connected in series their length are L and 2L and radius r and 2r respectively the pressure difference across the first and second tube are in the ratio

0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction. S​​​​​​8+ O​​​​​​2​​​ ----&gt; SO2

What is formula for product of GP upto infinite and n terms?

At a given place a mercury barometer records a pressure of 0.70mm of hg. What would ve the height of water column if mercury in barometer is replaced by water? Take density of mercury to be 13.6*10kg/m raise to power cube

What is the hybridization of the carbocation ch3ch2+

In a hydrogen atom, if the energy of an electron in ground state is −13.6 eV, then its energy in the 2nd excited state is

Hydrolysis of CH_3COONa increases when it is mixed with the solution of-1)CH_3COOH, 2)NaOH, 3)HCl, 4)NH_4OH .

In which reaction, incorrect product is formed?

0.2 g of S is reacted with excess of oxygen then determine the volume of sulpusu dioxide in the reaction. S8+ O2 ----> SO2