46295 + Interview Questions in Chemistry

1.	17 31 g of phosphorus P4 and 32 g of oxygen are completely converted into P4O6 and P4O10 respectively,then moles of P4O6 and P4O10 formed respectively will be ??
Answer» 17 31 g of phosphorus P4 and 32 g of oxygen are completely converted into P4O6 and P4O10 respectively,then moles of P4O6 and P4O10 formed respectively will be ??

Discussion

2.	What does the negative electronic energy (En) for hydrogen atom mean?
Answer» What does the negative electronic energy (En) for hydrogen atom mean?

Discussion

3.	The carbylamine reaction is given by compounds having:
Answer» The carbylamine reaction is given by compounds having:

Discussion

4.	C2 is rotated anti-clockwise 120∘ aboutC2−C3 bond. The resulting conformer is
Answer» $C_{2}$ is rotated anti-clockwise $120^{\circ}$ about $C_{2} - C_{3}$ bond. The resulting conformer is

4.

C2 is rotated anti-clockwise 120∘ aboutC2−C3 bond. The resulting conformer is

Answer»

$C_{2}$ is rotated anti-clockwise $120^{\circ}$ about $C_{2} - C_{3}$ bond. The resulting conformer is

Discussion

5.	Total number of stereoisomers that can exist for given compound is:
Answer» Total number of stereoisomers that can exist for given compound is:

Discussion

6.	16. What is the relation between solubility and hydration enthalpy?( If we talk in terms of alkaline earth metals)
Answer» 16. What is the relation between solubility and hydration enthalpy?( If we talk in terms of alkaline earth metals)

Discussion

7.	An unknown alkyl halide (A) reacts with alcoholic KOH to produce a hydrocarbon (C4H8). Ozonolysis of the hydrocarbon affords one mole of propionaldehyde and one mole of formaldehyde. Suggest which organic structure among the following is the correct structure of the above alkyl halide(A).
Answer» An unknown alkyl halide (A) reacts with alcoholic KOH to produce a hydrocarbon $(C_{4} H_{8})$ . Ozonolysis of the hydrocarbon affords one mole of propionaldehyde and one mole of formaldehyde. Suggest which organic structure among the following is the correct structure of the above alkyl halide(A).

Discussion

8.	Boilingpoint of water at 750 mm Hg is 99.63°C. How much sucrose is to beadded to 500 g of water such that it boils at 100°C.Molal elevation constant for water is 0.52 K kg mol−1.
Answer» Boiling point of water at 750 mm Hg is 99.63°C. How much sucrose is to be added to 500 g of water such that it boils at 100°C. Molal elevation constant for water is 0.52 K kg mol⁻¹.

Discussion

9.	Reversible expansion of an ideal gas under isotheramal and adiabatic conditions are as shown in the figure.AB → Isothermal expansionAC → Adiabatic expansionWhich of the following options is not correct?
Answer» Reversible expansion of an ideal gas under isotheramal and adiabatic conditions are as shown in the figure. AB $\to$ Isothermal expansion AC $\to$ Adiabatic expansion Which of the following options is not correct?

Discussion

10.	If the solution of the CuSO4 in which copper rod is immensed is diluted to 100 times, the electrode potential:(a) increases by 0.030 volt b decreases by 0.030 volt(c) increases by 0.059 volt(d)deceases by 0.0059 vol
Answer» If the solution of the CuSO4 in which copper rod is immensed is diluted to 100 times, the electrode potential:(a) increases by 0.030 volt b decreases by 0.030 volt(c) increases by 0.059 volt(d)deceases by 0.0059 vol

Discussion

11.	Name the sugar present in milk. How many monosaccharide units are present in it? What are such oligosaccharides called?
Answer» Name the sugar present in milk. How many monosaccharide units are present in it? What are such oligosaccharides called?

Discussion

12.	The linear charge density upon the semicircular ring, on both side is same in magnitude i.e. µ but different in nature, what is the magnitude of electric field intensity at center?
Answer» The linear charge density upon the semicircular ring, on both side is same in magnitude i.e. µ but different in nature, what is the magnitude of electric field intensity at center?

Discussion

13.	Which of the following oxides is most acidic?
Answer» Which of the following oxides is most acidic?

Discussion

14.	200 mL of a N10 H2SO4 solution is mixed with 300 mL of a N100 NaOH solution. Calculate the normality of the excess H+/OH− ions in the resulting solution.
Answer» 200 mL of a $\frac{N}{10}$ $H_{2} S O_{4}$ solution is mixed with 300 mL of a $\frac{N}{100}$ $N a O H$ solution. Calculate the normality of the excess $H^{+} / O H^{-}$ ions in the resulting solution.

Discussion

15.	A car just leaves the road when it passes over a hump of radius 40 m. the car's velocity is: a. 20m/s b. 392m/s c. 62m/s
Answer» A car just leaves the road when it passes over a hump of radius 40 m. the car's velocity is: a. 20m/s b. 392m/s c. 62m/s

Discussion

16.	Obtainthe binding energy (in MeV) of a nitrogen nucleus,given =14.00307u
Answer» Obtain the binding energy (in MeV) of a nitrogen nucleus, given =14.00307 u

Discussion

17.	34. How many triangular void formed at surface of octahedral void show
Answer» 34. How many triangular void formed at surface of octahedral void show

Discussion

18.	A solution that obeys Raoult's law is called
Answer» A solution that obeys Raoult's law is called

Discussion

19.	why alkyl groups are less electron withdrawing than H?
Answer» why alkyl groups are less electron withdrawing than H?

Discussion

20.	what is the packing fraction of a 2 dimensional hexagonal closed packed layer?
Answer» what is the packing fraction of a 2 dimensional hexagonal closed packed layer?

Discussion

21.	At 20∘C The vapour pressure of pure ether is 442 mm Hg. When 6.1 g of a non volatile substance is dissolved in 50 g of ether (molecular weight 74). The vapour pressure of solution falls to 410 mm Hg.What is the molecular weight of the substance?Assume the solution to be non-dilute.
Answer» At $20^{\circ} C$ The vapour pressure of pure ether is $442 m m H g$ . When $6.1 g$ of a non volatile substance is dissolved in $50 g$ of ether (molecular weight 74). The vapour pressure of solution falls to $410 m m H g$ . What is the molecular weight of the substance? Assume the solution to be non-dilute.

Discussion

22.	88.At STP 16ml of of oxygen diffused through a porous partition in t seconds. What volume of carbon dioxide will diffuse in the same time and under same conditions?
Answer» 88.At STP 16ml of of oxygen diffused through a porous partition in t seconds. What volume of carbon dioxide will diffuse in the same time and under same conditions?

Discussion

23.	The drain cleaner,Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen.What volume of dihydrogen at 20°C and pressure one bar will be released when 0.15 g of aluminium reacts?
Answer» The drain cleaner,Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen.What volume of dihydrogen at 20^°C and pressure one bar will be released when 0.15 g of aluminium reacts?

Discussion

24.	The number of S-S bond in pyrosulphuric acid (oleum) is:
Answer» The number of S-S bond in pyrosulphuric acid (oleum) is:

Discussion

25.	In the given figure, let ΔW1 and ΔW2 be the work done by the gas in process A and B respectively then (given change in volume is same for both)
Answer» In the given figure, let $Δ W_{1}$ and $Δ W_{2}$ be the work done by the gas in process A and B respectively then (given change in volume is same for both)

Discussion

26.	A solution of [Ni(H2O)6]2+ isgreen but a solution of [Ni(CN)4]2− iscolourless. Explain.
Answer» A solution of [Ni(H₂O)₆]²⁺ is green but a solution of [Ni(CN)₄]²⁻ is colourless. Explain.

Discussion

27.	If 1.8 grams of glucose is given then find the number of atoms of carbon present in it.
Answer» If 1.8 grams of glucose is given then find the number of atoms of carbon present in it.

Discussion

28.	One litre of a gas at STP weight 1.16 g it can possible be
Answer» One litre of a gas at STP weight 1.16 g it can possible be

Discussion

29.	The enthalpy change for the reaction A(g) + 3B(g) 3C(g), is – 92.38 kJ at 300 K. The value of Δ U at 300 K is Options: a- –58.34 kJ b- –89.88 kJ c-–80.42 kJ d-–36.24 kJ
Answer» The enthalpy change for the reaction A(g) + 3B(g) 3C(g), is – 92.38 kJ at 300 K. The value of Δ U at 300 K is Options: a- –58.34 kJ b- –89.88 kJ c-–80.42 kJ d-–36.24 kJ

Discussion

30.	The relative rate of acid catalyzed dehydration of following alcohols would be
Answer» The relative rate of acid catalyzed dehydration of following alcohols would be

Discussion

31.	In a double slit experiment, the separation between the slits is 1 mm, the wavelength of light used is 5×10−7 m and the distance of the screen from the slits is 1 m. How many bright fringes are formed in one centimeter width, on the screen?
Answer» In a double slit experiment, the separation between the slits is $1 mm$ , the wavelength of light used is $5 \times 10^{- 7} m$ and the distance of the screen from the slits is $1 m$ . How many bright fringes are formed in one centimeter width, on the screen?

Discussion

32.	Which site of an enzyme is called allosteric site?
Answer» Which site of an enzyme is called allosteric site?

Discussion

33.	molar volume is the volume occupied by 1 mol of any ideal gas at standard temperature and pressure. show that it is 22.4 liters
Answer» molar volume is the volume occupied by 1 mol of any ideal gas at standard temperature and pressure. show that it is 22.4 liters

Discussion

34.	83 Sodium phenoxide with ethyl iodide gives what? Which reaction is this?
Answer» 83 Sodium phenoxide with ethyl iodide gives what? Which reaction is this?

Discussion

35.	One litre of 0.2M copper sulphate solution is electrolysed till all the copper is deposited at the cathode. Then the volume of gas released at Anode, is. 1)112. 2)224. 3)2240 4)1120
Answer» One litre of 0.2M copper sulphate solution is electrolysed till all the copper is deposited at the cathode. Then the volume of gas released at Anode, is. 1)112. 2)224. 3)2240 4)1120

Discussion

36.	What are the features of catalysis by zeolites?
Answer» What are the features of catalysis by zeolites?

Discussion

37.	The graph of lnRR0 versus ln A (R radius of a nucleus and A - its mass number) is
Answer» The graph of $l n \frac{R}{R_{0}}$ versus ln A (R radius of a nucleus and A - its mass number) is

Discussion

38.	P4 + OH-. = PH3 +. H2PO2 -
Answer» P4 + OH-. = PH3 +. H2PO2 -

Discussion

39.	how to draw the lewis dot strcuture (structure) of co molecule . explai
Answer» how to draw the lewis dot strcuture (structure) of co molecule . explai

Discussion

40.	Reagent "P" in the given reaction is :
Answer» Reagent "P" in the given reaction is :

Discussion

41.	The dis†an ce between H+ and Cl– ions in HCl molecule is 1Å. What will be the electric potential due to this dipole at a dis†an ce 2Å on the equatorial line of dipole? 0.72 V Zero 2.7 V 0.27 V
Answer» The dis†an ce between H+ and Cl– ions in HCl molecule is 1Å. What will be the electric potential due to this dipole at a dis†an ce 2Å on the equatorial line of dipole? 0.72 V Zero 2.7 V 0.27 V

Discussion

42.	Equimolar concentrations of H2 and I2 are heated to equilibrium in a 2litre flask. At equilibrium, the forward and backward rate constants are found to be equal. What percentage of initial concentration of H2has reacted at equilibrium?
Answer» Equimolar concentrations of $H_{2} a n d I_{2}$ are heated to equilibrium in a 2litre flask. At equilibrium, the forward and backward rate constants are found to be equal. What percentage of initial concentration of $H_{2}$ has reacted at equilibrium?

Discussion

43.	What is the cell entropy change of the following cell ? Pt(s)\|H2(g, 1atm)\|CH3COOH,HCl\|\|KCl(aq)\|Hg2Cl2(s)\|HgEMF of the cell is found to be 0.0045 V at 298 K and temperature coefficient is 3.4×10−4 V K−1
Answer» What is the cell entropy change of the following cell ? $P t (s) \| H_{2} (g, 1 a t m) \| C H_{3} C O O H, H C l \| \| K C l (a q) \| H g_{2} C l_{2} (s) \| H g$ EMF of the cell is found to be $0.0045 V$ at 298 K and temperature coefficient is $3.4 \times 10^{- 4} V K^{- 1}$

Discussion

44.	Commenton the nature of two S−O bonds formed in SO2molecule. Are the two S−O bonds in this molecule equal?
Answer» Comment on the nature of two S−O bonds formed in SO₂ molecule. Are the two S−O bonds in this molecule equal?

Discussion

45.	Solubility product of A2X3.4H2O is given by
Answer» Solubility product of $A_{2} X_{3} . 4 H_{2} O$ is given by

Discussion

46.	When 20g of CaCo3 were put into 10 litre flask and heated to 800°C,30% of CaCo3 remained unreacted at equilibrium Kp for decomposition of CaCo3 will be ------- 1)1.145atm 2)1.231 atm 2)2.146 atm 4)3.145 atm
Answer» When 20g of CaCo3 were put into 10 litre flask and heated to 800°C,30% of CaCo3 remained unreacted at equilibrium K_pfor decomposition of CaCo3 will be ------- 1)1.145atm 2)1.231 atm 2)2.146 atm 4)3.145 atm

Discussion

47.	The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S cm2 mol–1 respectively. The molar conductivity at infinite dilution of barium sulphate is _______S cm2 mol–1 .(Round off to the Nearest Integer).
Answer» The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are $280, 860 and 426 S c m^{2} m o l^{- 1}$ respectively. The molar conductivity at infinite dilution of barium sulphate is _______ $S c m^{2} m o l^{- 1}$ . (Round off to the Nearest Integer).

Discussion

48.	32. what is a ,b ,c and d ? If 'a' is only alkyne which on hydration produces aldehyde. the isomer of D is
Answer» 32. what is a ,b ,c and d ? If 'a' is only alkyne which on hydration produces aldehyde. the isomer of D is

Discussion

49.	A compound 'A' (C5H12O4) upon treatment with CH3MgX gives 4 moles of methane. Identify the structure of (A) which has all primary functional groups.
Answer» A compound 'A' $(C_{5} H_{12} O_{4})$ upon treatment with $C H_{3} M g X$ gives 4 moles of methane. Identify the structure of (A) which has all primary functional groups.

Discussion

50.	The weight of BaCl2 that would react with 24.4g of sodium sulphate to produce 46.6g of barium sulphate and 23.4g of sodium chloride is ?
Answer» The weight of BaCl2 that would react with 24.4g of sodium sulphate to produce 46.6g of barium sulphate and 23.4g of sodium chloride is ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

17 31 g of phosphorus P4 and 32 g of oxygen are completely converted into P4O6 and P4O10 respectively,then moles of P4O6 and P4O10 formed respectively will be ??

What does the negative electronic energy (En) for hydrogen atom mean?

The carbylamine reaction is given by compounds having:

C2 is rotated anti-clockwise 120∘ aboutC2−C3 bond. The resulting conformer is

Total number of stereoisomers that can exist for given compound is:

16. What is the relation between solubility and hydration enthalpy?( If we talk in terms of alkaline earth metals)

An unknown alkyl halide (A) reacts with alcoholic KOH to produce a hydrocarbon (C4H8). Ozonolysis of the hydrocarbon affords one mole of propionaldehyde and one mole of formaldehyde. Suggest which organic structure among the following is the correct structure of the above alkyl halide(A).

Boilingpoint of water at 750 mm Hg is 99.63°C. How much sucrose is to beadded to 500 g of water such that it boils at 100°C.Molal elevation constant for water is 0.52 K kg mol−1.

Reversible expansion of an ideal gas under isotheramal and adiabatic conditions are as shown in the figure.AB → Isothermal expansionAC → Adiabatic expansionWhich of the following options is not correct?

If the solution of the CuSO4 in which copper rod is immensed is diluted to 100 times, the electrode potential:(a) increases by 0.030 volt b decreases by 0.030 volt(c) increases by 0.059 volt(d)deceases by 0.0059 vol

Name the sugar present in milk. How many monosaccharide units are present in it? What are such oligosaccharides called?

The linear charge density upon the semicircular ring, on both side is same in magnitude i.e. µ but different in nature, what is the magnitude of electric field intensity at center?

Which of the following oxides is most acidic?

200 mL of a N10 H2SO4 solution is mixed with 300 mL of a N100 NaOH solution. Calculate the normality of the excess H+/OH− ions in the resulting solution.

A car just leaves the road when it passes over a hump of radius 40 m. the car's velocity is: a. 20m/s b. 392m/s c. 62m/s

Obtainthe binding energy (in MeV) of a nitrogen nucleus,given =14.00307u

34. How many triangular void formed at surface of octahedral void show

A solution that obeys Raoult's law is called

why alkyl groups are less electron withdrawing than H?

what is the packing fraction of a 2 dimensional hexagonal closed packed layer?

At 20∘C The vapour pressure of pure ether is 442 mm Hg. When 6.1 g of a non volatile substance is dissolved in 50 g of ether (molecular weight 74). The vapour pressure of solution falls to 410 mm Hg.What is the molecular weight of the substance?Assume the solution to be non-dilute.

88.At STP 16ml of of oxygen diffused through a porous partition in t seconds. What volume of carbon dioxide will diffuse in the same time and under same conditions?

The drain cleaner,Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen.What volume of dihydrogen at 20°C and pressure one bar will be released when 0.15 g of aluminium reacts?

The number of S-S bond in pyrosulphuric acid (oleum) is:

In the given figure, let ΔW1 and ΔW2 be the work done by the gas in process A and B respectively then (given change in volume is same for both)

A solution of [Ni(H2O)6]2+ isgreen but a solution of [Ni(CN)4]2− iscolourless. Explain.

If 1.8 grams of glucose is given then find the number of atoms of carbon present in it.

One litre of a gas at STP weight 1.16 g it can possible be

The enthalpy change for the reaction A(g) + 3B(g) 3C(g), is – 92.38 kJ at 300 K. The value of Δ U at 300 K is Options: a- –58.34 kJ b- –89.88 kJ c-–80.42 kJ d-–36.24 kJ

The relative rate of acid catalyzed dehydration of following alcohols would be

In a double slit experiment, the separation between the slits is 1 mm, the wavelength of light used is 5×10−7 m and the distance of the screen from the slits is 1 m. How many bright fringes are formed in one centimeter width, on the screen?

Which site of an enzyme is called allosteric site?

molar volume is the volume occupied by 1 mol of any ideal gas at standard temperature and pressure. show that it is 22.4 liters

83 Sodium phenoxide with ethyl iodide gives what? Which reaction is this?

One litre of 0.2M copper sulphate solution is electrolysed till all the copper is deposited at the cathode. Then the volume of gas released at Anode, is. 1)112. 2)224. 3)2240 4)1120

What are the features of catalysis by zeolites?

The graph of lnRR0 versus ln A (R radius of a nucleus and A - its mass number) is

P4 + OH-. = PH3 +. H2PO2 -

how to draw the lewis dot strcuture (structure) of co molecule . explai

Reagent "P" in the given reaction is :

The dis†an ce between H+ and Cl– ions in HCl molecule is 1Å. What will be the electric potential due to this dipole at a dis†an ce 2Å on the equatorial line of dipole? 0.72 V Zero 2.7 V 0.27 V

Equimolar concentrations of H2 and I2 are heated to equilibrium in a 2litre flask. At equilibrium, the forward and backward rate constants are found to be equal. What percentage of initial concentration of H2has reacted at equilibrium?

What is the cell entropy change of the following cell ? Pt(s)|H2(g, 1atm)|CH3COOH,HCl||KCl(aq)|Hg2Cl2(s)|HgEMF of the cell is found to be 0.0045 V at 298 K and temperature coefficient is 3.4×10−4 V K−1

Commenton the nature of two S−O bonds formed in SO2molecule. Are the two S−O bonds in this molecule equal?

Solubility product of A2X3.4H2O is given by

When 20g of CaCo3 were put into 10 litre flask and heated to 800°C,30% of CaCo3 remained unreacted at equilibrium Kp for decomposition of CaCo3 will be ------- 1)1.145atm 2)1.231 atm 2)2.146 atm 4)3.145 atm

The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S cm2 mol–1 respectively. The molar conductivity at infinite dilution of barium sulphate is _______S cm2 mol–1 .(Round off to the Nearest Integer).

32. what is a ,b ,c and d ? If 'a' is only alkyne which on hydration produces aldehyde. the isomer of D is

A compound 'A' (C5H12O4) upon treatment with CH3MgX gives 4 moles of methane. Identify the structure of (A) which has all primary functional groups.

The weight of BaCl2 that would react with 24.4g of sodium sulphate to produce 46.6g of barium sulphate and 23.4g of sodium chloride is ?