46295 + Interview Questions in Chemistry

1.	Amide group is present in
Answer» Amide group is present in

Discussion

2.	Explainhow much portion of an atom located at (i)corner and (ii)body-centre of a cubic unit cell is part of its neighbouring unitcell.
Answer» Explain how much portion of an atom located at (i) corner and (ii) body-centre of a cubic unit cell is part of its neighbouring unit cell.

Discussion

3.	A vessel contains 100 litres of a liquid x. Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 litres. If the external pressure is one atm, and 202.6 Joules of heat were supplied then, [ U - total internal energy ]
Answer» A vessel contains 100 litres of a liquid $x$ . Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 litres. If the external pressure is one atm, and 202.6 Joules of heat were supplied then, [ U - total internal energy ]

Discussion

4.	22.An alkaloid contains 17.28%of nitrogen and its molecular mass is 162.the number of nitrogen atoms present in one molecule of alkaloid is? 1.5 2.4 3.3 4.2
Answer» 22.An alkaloid contains 17.28%of nitrogen and its molecular mass is 162.the number of nitrogen atoms present in one molecule of alkaloid is? 1.5 2.4 3.3 4.2

Discussion

5.	what if one asks differentiation of pi to the power x with respect to x?
Answer» what if one asks differentiation of pi to the power x with respect to x?

Discussion

6.	For a Ist order decomposition of SO2Cl2(g), to SO2(g) and Cl2(g), an experiment is carried out and the following graph is plotted: SO2Cl2(g)→ SO2(g) + Cl2(g) What is the rate of the reaction at t = 10 min in (mol L−1 sec−1)
Answer» For a $I^{s t}$ order decomposition of $S O_{2} C l_{2} (g)$ , to $S O_{2} (g)$ and $C l_{2} (g)$ , an experiment is carried out and the following graph is plotted: $S O_{2} C l_{2} (g) \to S O_{2} (g) + C l_{2} (g)$ What is the rate of the reaction at t = 10 min in $(m o l L^{- 1} s e c^{- 1})$

Discussion

7.	D-block element with lowest atomic radii A)cu B)ti C)sc D)co
Answer» D-block element with lowest atomic radii A)cu B)ti C)sc D)co

Discussion

8.	For the reduction of NO−3 ion in an aqueous solution Eo is 0.96 V. Values of Eo for some metal ions are given below:V2+(aq)+2e−→V;Eo=−1.19 VFe3+(aq)+3e−→Fe;Eo=−0.04 VAu3+(aq)+3e−→Au;Eo=1.40 VHg2+(aq)+2e−→Hg;Eo=+0.86 VThe pair(s) of metals that is not oxidised by NO−3 in aqueous solution is (are):
Answer» For the reduction of $N O_{3}^{-}$ ion in an aqueous solution $E^{o}$ is $0.96 V$ . Values of $E^{o}$ for some metal ions are given below: $V^{2 +} (a q) + 2 e^{-} \to V; E^{o} = - 1.19 V F e^{3 +} (a q) + 3 e^{-} \to F e; E^{o} = - 0.04 V A u^{3 +} (a q) + 3 e^{-} \to A u; E^{o} = 1.40 V H g^{2 +} (a q) + 2 e^{-} \to H g; E^{o} = + 0.86 V$ The pair(s) of metals that is not oxidised by $N O_{3}^{-}$ in aqueous solution is (are):

Discussion

9.	In iodometric titrations, an oxidizing agent such as KMnO4,K2Cr2O7,CuSO4,H2O2 is allowed to react in neutral medium or in acidic medium with excess of potassium iodide to liberate free iodine (I2). Free iodine is titrated against standard reducing agent usually with sodium thiosulphate. The reactions are as follows: K2Cr2O7+6KI+7H2SO4→Cr2(SO4)3+4K2SO4+7H2O+I2 2CuCO4+4KI→Cu2I2+2K2SO4+I2 I2+Na2S2O3→2NaI+Na2S4O6 In iodometric titrations, starch solution is used as an indicator. Starch solution gives blue or violet colour with free iodine. At the end point, blue or voilet colour disappears when iodine is completely changed to iodide. What volume of 0.40 M Na2S2O3 would be required (in mL) to react with I2 liberated by adding 0.04 mole of KI to 50 mL of 0.20 M CuSO4 solution?
Answer» In iodometric titrations, an oxidizing agent such as $K M n O_{4}, K_{2} C r_{2} O_{7}, C u S O_{4}, H_{2} O_{2}$ is allowed to react in neutral medium or in acidic medium with excess of potassium iodide to liberate free iodine $(I_{2})$ . Free iodine is titrated against standard reducing agent usually with sodium thiosulphate. The reactions are as follows: $K_{2} C r_{2} O_{7} + 6 K I + 7 H_{2} S O_{4} \to C r_{2} (S O_{4})_{3} + 4 K_{2} S O_{4} + 7 H_{2} O + I_{2}$ $2 C u C O_{4} + 4 K I \to C u_{2} I_{2} + 2 K_{2} S O_{4} + I_{2}$ $I_{2} + N a_{2} S_{2} O_{3} \to 2 N a I + N a_{2} S_{4} O_{6}$ In iodometric titrations, starch solution is used as an indicator. Starch solution gives blue or violet colour with free iodine. At the end point, blue or voilet colour disappears when iodine is completely changed to iodide. What volume of 0.40 M $N a_{2} S_{2} O_{3}$ would be required (in mL) to react with $I_{2}$ liberated by adding 0.04 mole of $K I$ to 50 mL of 0.20 M $C u S O_{4}$ solution?

Discussion

10.	the internal energy of a gas is 20j . it undergoes a thermodynamic process such that 35j is added to the system and itdoes 5 j of work on atmosphere . final value of internal energy
Answer» the internal energy of a gas is 20j . it undergoes a thermodynamic process such that 35j is added to the system and itdoes 5 j of work on atmosphere . final value of internal energy

Discussion

11.	स्वामी का अपनी दादी के साथ कैसा रिश्ता था? तीन-चार वाक्यों में लिखो।
Answer» स्वामी का अपनी दादी के साथ कैसा रिश्ता था? तीन-चार वाक्यों में लिखो।

Discussion

12.	When calcium carbide reacts with N2 at 1000 oC, the compound formed is:
Answer» When calcium carbide reacts with $N_{2}$ at $1000^{o} C$ , the compound formed is:

Discussion

13.	10 gram of a fairly concentrated solution of cupric sulphate is electrolysed using 0.01 faraday of electrocity.Calculate the mass (in gram) of the resulting solution(Molecular mass of Cu=63.5 g)
Answer» $10$ gram of a fairly concentrated solution of cupric sulphate is electrolysed using $0.01$ faraday of electrocity. Calculate the mass (in gram) of the resulting solution (Molecular mass of $C u = 63.5 g$ )

Discussion

14.	Which one of the following form maximum boiling point azeotrope ?(1) CHCl3 + C2H5OH (2) Ethanol + water (3) Benzene + toluene (4) HCl + waterWhy option 1 is incorrect?
Answer» Which one of the following form maximum boiling point azeotrope ? (1) CHCl3 + C2H5OH (2) Ethanol + water (3) Benzene + toluene (4) HCl + water Why option 1 is incorrect?

Discussion

15.	Calculate the packing fraction of an FCC and BCC to 2 decimal places. Add it together, multiply it by 100 and type the answer. ___
Answer» Calculate the packing fraction of an FCC and BCC to 2 decimal places. Add it together, multiply it by 100 and type the answer. ___

Discussion

16.	Latent heat of vaporisation of a liquid at 500K and 1atm pressure is 10 Kcal/mol. What will be the change in internal energy of 3 mol of liquid at same temperature and pressure?
Answer» Latent heat of vaporisation of a liquid at 500K and 1atm pressure is 10 Kcal/mol. What will be the change in internal energy of 3 mol of liquid at same temperature and pressure?

Discussion

17.	which of the following shows intramolecular hydrogen bonding in the hydrated formNH3C2H5OHCCl3CHOCHCl3
Answer» which of the following shows intramolecular hydrogen bonding in the hydrated form NH3 C2H5OH CCl3CHO CHCl3

Discussion

18.	ntthe Vrms of hydrogen molecule at a given temprature is 300m/sec. if temperature is doubled and hydrogen gas dissociates into atomic hydrogen then Vrms =n
Answer» ntthe Vrms of hydrogen molecule at a given temprature is 300m/sec. if temperature is doubled and hydrogen gas dissociates into atomic hydrogen then Vrms =n

Discussion

19.	If the initial reading on the scale is (2±0.2)kg and final reading is (36±0.3)kg, calculate the increase in mass with proper error limits.
Answer» If the initial reading on the scale is (2±0.2)kg and final reading is (36±0.3)kg, calculate the increase in mass with proper error limits.

Discussion

20.	Osmotic pressure of a solution containing 7 g of a protein per 100 mL of solution is 25 mm of Hg at370C. Calculate the molecular mass of protein. R= 0.082 L atm mol−1K−1.
Answer» Osmotic pressure of a solution containing 7 g of a protein per 100 mL of solution is 25 mm of Hg at $37^{0} C$ . Calculate the molecular mass of protein. R= 0.082 L atm $m o l^{- 1} K^{- 1}$ .

Discussion

21.	10 if we perform oxidation reaction on 2-hydroxybutanal then what product will be formed
Answer» 10 if we perform oxidation reaction on 2-hydroxybutanal then what product will be formed

Discussion

22.	8. What is TISHENKO reaction?
Answer» 8. What is TISHENKO reaction?

Discussion

23.	Assertion A particle present at the corner of face centered unit cell has 1/8 of its contribution of the unit cell Reason In any space lattice, the corner of the unit cell is always shared by the eight unit cells 1)A 2)B 3)C 4)D
Answer» Assertion A particle present at the corner of face centered unit cell has 1/8 of its contribution of the unit cell Reason In any space lattice, the corner of the unit cell is always shared by the eight unit cells 1)A 2)B 3)C 4)D

Discussion

24.	What is difference between butane and n-butane.
Answer» What is difference between butane and n-butane.

Discussion

25.	50ml of each gas A and B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gas A is?
Answer» 50ml of each gas A and B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gas A is?

Discussion

26.	What is the difference between specific heat and heat capacity?
Answer» What is the difference between specific heat and heat capacity?

Discussion

27.	Which of the following reaction will take place at fastest rate?
Answer» Which of the following reaction will take place at fastest rate?

Discussion

28.	What is the order of redox potential of all Complex involved in noncyclic photo-phosphorylation
Answer» What is the order of redox potential of all Complex involved in noncyclic photo-phosphorylation

Discussion

29.	Fill in the blank.(a) Antibiotics commonly block biochemical pathways important for the growth of __.
Answer» Fill in the blank. (a) Antibiotics commonly block biochemical pathways important for the growth of __.

Discussion

30.	Which of the following is aromatic?
Answer» Which of the following is aromatic?

Discussion

31.	15. In a container, equal masses of hydrogen gas, He and methane gas are mixed. Find the ratio of their partial pressure.
Answer» 15. In a container, equal masses of hydrogen gas, He and methane gas are mixed. Find the ratio of their partial pressure.

Discussion

32.	Which of the following isoelectronic ions have lowest ionization energy?
Answer» Which of the following isoelectronic ions have lowest ionization energy?

Discussion

33.	If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,
Answer» If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,

Discussion

34.	Which of the following compounds has a stable trans isomer?
Answer» Which of the following compounds has a stable trans isomer?

Discussion

35.	About 0.45 gram of an organic compound containing carbon hydrogen and oxygen on complete combustion yields 0.44 grammar ofCO2 and 0.09 gram of H2O .The percentage of oxygen (by weight )in the compound is
Answer» About 0.45 gram of an organic compound containing carbon hydrogen and oxygen on complete combustion yields 0.44 grammar ofCO2 and 0.09 gram of H2O .The percentage of oxygen (by weight )in the compound is

Discussion

36.	Air is dense at sea level. This is an application of –
Answer» Air is dense at sea level. This is an application of –

Discussion

37.	The wavelength associated with a golf ball weighing 100 g and moving at a speed of 40 m/hr is approximately of the order:
Answer» The wavelength associated with a golf ball weighing 100 g and moving at a speed of 40 m/hr is approximately of the order:

Discussion

38.	50 g of CaCO3 will react with ___ g of 20% HCL by weight. 1. 36.5 g 2. 73 g 3. 109.5 g 4. 182.5
Answer» 50 g of CaCO3 will react with ___ g of 20% HCL by weight. 1. 36.5 g 2. 73 g 3. 109.5 g 4. 182.5

Discussion

39.	Silk yarn of different textures can be prepared. Define the statement.
Answer» Silk yarn of different textures can be prepared. Define the statement.

Discussion

40.	How many structural isomers are possible of the following complex ion. [Fe(CN)6]4-(including this ion)
Answer» How many structural isomers are possible of the following complex ion. [Fe(CN)6]4-(including this ion)

Discussion

41.	69. In the lower temperature range of blast furnace {Fe_2O_3 first reduced to { (1) Fe_3O_4{ (2) FeO (3) Fe (4) Mixture of Fe and Feo
Answer» 69. In the lower temperature range of blast furnace {Fe_2O_3 first reduced to { (1) Fe_3O_4{ (2) FeO (3) Fe (4) Mixture of Fe and Feo

Discussion

42.	Action of hydrazine on aldehydes and ketones gives compound of the general structure
Answer» Action of hydrazine on aldehydes and ketones gives compound of the general structure

Discussion

43.	Does iodopropane react with silver cyanide
Answer» Does iodopropane react with silver cyanide

Discussion

44.	Which of the following set has the strongest tendency to form anions
Answer» Which of the following set has the strongest tendency to form anions

Discussion

45.	Which product will not be formed when potassium chlorate is treated with concentrate H2so4? 1 co2 2 hclo4 3 khso4 4 cl2
Answer» Which product will not be formed when potassium chlorate is treated with concentrate H2so4? 1 co2 2 hclo4 3 khso4 4 cl2

Discussion

46.	12. The metal carbonyl which is most oxidizing among the following is 1). Cr(CO)6 2). Fe(CO)5 3). V(CO)6 4). Ni(CO)4
Answer» 12. The metal carbonyl which is most oxidizing among the following is 1). Cr(CO)6 2). Fe(CO)5 3). V(CO)6 4). Ni(CO)4

Discussion

47.	why Molarity is not aaditive?
Answer» why Molarity is not aaditive?

Discussion

48.	how ca+ has coordination no. 8 in CaF2 str.?? how O2- has coordination no. 8 in Na2O str.??
Answer» how ca+ has coordination no. 8 in CaF2 str.?? how O2- has coordination no. 8 in Na2O str.??

Discussion

49.	what is edge centered unit cell is it same as face centered unit cell
Answer» what is edge centered unit cell is it same as face centered unit cell

Discussion

50.	how to compare order of covalent nature in compounds
Answer» how to compare order of covalent nature in compounds

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Amide group is present in

Explainhow much portion of an atom located at (i)corner and (ii)body-centre of a cubic unit cell is part of its neighbouring unitcell.

A vessel contains 100 litres of a liquid x. Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 litres. If the external pressure is one atm, and 202.6 Joules of heat were supplied then, [ U - total internal energy ]

22.An alkaloid contains 17.28%of nitrogen and its molecular mass is 162.the number of nitrogen atoms present in one molecule of alkaloid is? 1.5 2.4 3.3 4.2

what if one asks differentiation of pi to the power x with respect to x?

For a Ist order decomposition of SO2Cl2(g), to SO2(g) and Cl2(g), an experiment is carried out and the following graph is plotted: SO2Cl2(g)→ SO2(g) + Cl2(g) What is the rate of the reaction at t = 10 min in (mol L−1 sec−1)

D-block element with lowest atomic radii A)cu B)ti C)sc D)co

the internal energy of a gas is 20j . it undergoes a thermodynamic process such that 35j is added to the system and itdoes 5 j of work on atmosphere . final value of internal energy

स्वामी का अपनी दादी के साथ कैसा रिश्ता था? तीन-चार वाक्यों में लिखो।

When calcium carbide reacts with N2 at 1000 oC, the compound formed is:

10 gram of a fairly concentrated solution of cupric sulphate is electrolysed using 0.01 faraday of electrocity.Calculate the mass (in gram) of the resulting solution(Molecular mass of Cu=63.5 g)

Which one of the following form maximum boiling point azeotrope ?(1) CHCl3 + C2H5OH (2) Ethanol + water (3) Benzene + toluene (4) HCl + waterWhy option 1 is incorrect?

Calculate the packing fraction of an FCC and BCC to 2 decimal places. Add it together, multiply it by 100 and type the answer. ___

Latent heat of vaporisation of a liquid at 500K and 1atm pressure is 10 Kcal/mol. What will be the change in internal energy of 3 mol of liquid at same temperature and pressure?

which of the following shows intramolecular hydrogen bonding in the hydrated formNH3C2H5OHCCl3CHOCHCl3

ntthe Vrms of hydrogen molecule at a given temprature is 300m/sec. if temperature is doubled and hydrogen gas dissociates into atomic hydrogen then Vrms =n

If the initial reading on the scale is (2±0.2)kg and final reading is (36±0.3)kg, calculate the increase in mass with proper error limits.

Osmotic pressure of a solution containing 7 g of a protein per 100 mL of solution is 25 mm of Hg at370C. Calculate the molecular mass of protein. R= 0.082 L atm mol−1K−1.

10 if we perform oxidation reaction on 2-hydroxybutanal then what product will be formed

8. What is TISHENKO reaction?

Assertion A particle present at the corner of face centered unit cell has 1/8 of its contribution of the unit cell Reason In any space lattice, the corner of the unit cell is always shared by the eight unit cells 1)A 2)B 3)C 4)D

What is difference between butane and n-butane.

50ml of each gas A and B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gas A is?

What is the difference between specific heat and heat capacity?

Which of the following reaction will take place at fastest rate?

What is the order of redox potential of all Complex involved in noncyclic photo-phosphorylation

Fill in the blank.(a) Antibiotics commonly block biochemical pathways important for the growth of __.

Which of the following is aromatic?

15. In a container, equal masses of hydrogen gas, He and methane gas are mixed. Find the ratio of their partial pressure.

Which of the following isoelectronic ions have lowest ionization energy?

If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,

Which of the following compounds has a stable trans isomer?

About 0.45 gram of an organic compound containing carbon hydrogen and oxygen on complete combustion yields 0.44 grammar ofCO2 and 0.09 gram of H2O .The percentage of oxygen (by weight )in the compound is

Air is dense at sea level. This is an application of –

The wavelength associated with a golf ball weighing 100 g and moving at a speed of 40 m/hr is approximately of the order:

50 g of CaCO3 will react with ___ g of 20% HCL by weight. 1. 36.5 g 2. 73 g 3. 109.5 g 4. 182.5

Silk yarn of different textures can be prepared. Define the statement.

How many structural isomers are possible of the following complex ion. [Fe(CN)6]4-(including this ion)

69. In the lower temperature range of blast furnace {Fe_2O_3 first reduced to { (1) Fe_3O_4{ (2) FeO (3) Fe (4) Mixture of Fe and Feo

Action of hydrazine on aldehydes and ketones gives compound of the general structure

Does iodopropane react with silver cyanide

Which of the following set has the strongest tendency to form anions

Which product will not be formed when potassium chlorate is treated with concentrate H2so4? 1 co2 2 hclo4 3 khso4 4 cl2

12. The metal carbonyl which is most oxidizing among the following is 1). Cr(CO)6 2). Fe(CO)5 3). V(CO)6 4). Ni(CO)4

why Molarity is not aaditive?

how ca+ has coordination no. 8 in CaF2 str.?? how O2- has coordination no. 8 in Na2O str.??

what is edge centered unit cell is it same as face centered unit cell

how to compare order of covalent nature in compounds