46295 + Interview Questions in Chemistry

1.	The solubility of a solute in water varies with temperature as given by :S=Ae−ΔHRT,ΔH being the enthalpy of solution. For a given solute, variation of In S with temperature is as shown in the figure. The solute is expected to be ?
Answer» The solubility of a solute in water varies with temperature as given by $: S = A e^{\frac{- Δ H}{R T}}, Δ H$ being the enthalpy of solution. For a given solute, variation of In S with temperature is as shown in the figure. The solute is expected to be ?

Discussion

2.	Which of the following cannot exist on the basis of MO theory?
Answer» Which of the following cannot exist on the basis of MO theory?

Discussion

3.	what is meant by standard conditions in a processlike G^0
Answer» what is meant by standard conditions in a process like G^0

Discussion

4.	An element crystallizes in a body-centered cubic unit cell. If two of the atoms from the corners are removed. Calculate the packing fraction.
Answer» An element crystallizes in a body-centered cubic unit cell. If two of the atoms from the corners are removed. Calculate the packing fraction.

Discussion

5.	What is the correct order of dehydration of the following compounds in presence of acidic medium?
Answer» What is the correct order of dehydration of the following compounds in presence of acidic medium?

Discussion

6.	Which of the following salt in dry heating test turn pink on cooling and blue on heating?
Answer» Which of the following salt in dry heating test turn pink on cooling and blue on heating?

Discussion

7.	As the (V)BE and (V)CE are potential barriers, so while writing kirchhoff law why aren't they negative sign
Answer» As the (V)BE and (V)CE are potential barriers, so while writing kirchhoff law why aren't they negative sign

Discussion

8.	Calculate the weight of FeO produced from 2gVO and 5.75g of Fe2O3. Also report the limiting reagent.Given : VO+Fe2O3→FeO+V2O5
Answer» Calculate the weight of $F e O$ produced from $2 g V O$ and $5.75 g$ of $F e_{2} O_{3} .$ Also report the limiting reagent. Given : $V O + F e_{2} O_{3} \to F e O + V_{2} O_{5}$

Discussion

9.	how to calculate no of voids
Answer» how to calculate no of voids

Discussion

10.	How many of the following can given Fehling solution test ? (i) HCHO (ii) CH3CHO (iii) PhCHO (iv)(v) (vi) (vii) Glucose (viii) Fructose
Answer» How many of the following can given Fehling solution test ? (i) $H C H O$ (ii) $C H_{3} C H O$ (iii) $P h C H O$ (iv) (v) (vi) (vii) Glucose (viii) Fructose

Discussion

11.	What happens when you pour some acetone on your palm?
Answer» What happens when you pour some acetone on your palm?

Discussion

12.	A test consists of 6 multiple choice questions, each having 4 alternative answers of which only one is correct. The number of ways, in which a candidate answers all six questions such that exactly four of the answers are correct, is
Answer» A test consists of $6$ multiple choice questions, each having $4$ alternative answers of which only one is correct. The number of ways, in which a candidate answers all six questions such that exactly four of the answers are correct, is

Discussion

13.	Is there any difference between molar heat capacity and molar specific heat?
Answer» Is there any difference between molar heat capacity and molar specific heat?

Discussion

14.	Explain Hund&quots rule about molecular orbital theory
Answer» Explain Hund"s rule about molecular orbital theory

Discussion

15.	For an ideal binary solution (A) and (B), yA is the mole fraction of A in vapour phase. Which of the following plot should be linear?
Answer» For an ideal binary solution (A) and (B), y_A is the mole fraction of A in vapour phase. Which of the following plot should be linear?

Discussion

16.	13. If (X2+x-12) divides X3+ax2+bx-84 completely.Find the values of a and b
Answer» 13. If (X2+x-12) divides X3+ax2+bx-84 completely.Find the values of a and b

Discussion

17.	In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4 eV. The KE of electron in this orbit
Answer» In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4 eV. The KE of electron in this orbit

Discussion

18.	Which of the following contain maximum number of molecules at STP 100g of CaCO3 44.8 L of O3, 2g of H2 and 16g of O2.
Answer» Which of the following contain maximum number of molecules at STP 100g of $C a C O_{3}$ 44.8 L of $O_{3}$ , 2g of $H_{2}$ and 16g of $O_{2}$ .

Discussion

19.	Polytheleneglycols are used in the preparation of which type of detergents? a) Cationic detergents b) Anionic detergents c) Non-ionic detergents d) Soaps
Answer» Polytheleneglycols are used in the preparation of which type of detergents? a) Cationic detergents b) Anionic detergents c) Non-ionic detergents d) Soaps

Discussion

20.	4gH2,32g o2 ,14gn2 and 1 g co2 are taken in a bulb of 500 ml which one of these have max active mass 1)H2 2)O2 3)N2 4)CO2
Answer» 4gH2,32g o2 ,14gn2 and 1 g co2 are taken in a bulb of 500 ml which one of these have max active mass 1)H2 2)O2 3)N2 4)CO2

Discussion

21.	Why pentan-3-one doesnt give sodium bisulphite test?
Answer» Why pentan-3-one doesnt give sodium bisulphite test?

Discussion

22.	A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. The change in internal energy ΔU of the gas in joules will be:
Answer» A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 $a t m$ from an initial volume of 2.50 $L$ to a final volume of 4.50 $L$ . The change in internal energy $Δ U$ of the gas in joules will be:

Discussion

23.	Teflon is a polymer obtained from
Answer» Teflon is a polymer obtained from

Discussion

24.	The most stable keto isomer of the following compound
Answer» The most stable keto isomer of the following compound

Discussion

25.	which products are formed in e1 & e2 reactions , inversion or retention?
Answer» which products are formed in e1 & e2 reactions , inversion or retention?

Discussion

26.	Total number of chriral centre present in the given compound is
Answer» Total number of chriral centre present in the given compound is

Discussion

27.	30. A solution of urea in water is labelled as 20% by weight. The molality of the solution is
Answer» 30. A solution of urea in water is labelled as 20% by weight. The molality of the solution is

Discussion

28.	complement of sets we'd it's properties
Answer» complement of sets we'd it's properties

Discussion

29.	The substance which contains both SP and SP3 hybridized carbon atoms is A) n-butene B) isobutane C) 2 butyne D) 1, 3 butadiene
Answer» The substance which contains both SP and SP3 hybridized carbon atoms is A) n-butene B) isobutane C) 2 butyne D) 1, 3 butadiene

Discussion

30.	what is suitable ratio of neutrons and protons for the nuclei to be stable?
Answer» what is suitable ratio of neutrons and protons for the nuclei to be stable?

Discussion

31.	what is the different of fundamental quantities and drivied quantities?
Answer» what is the different of fundamental quantities and drivied quantities?

Discussion

32.	Which organic compound among the following is not an isomer of CH3−CO−CH2CH2CH2CH3?
Answer» Which organic compound among the following is not an isomer of $C H_{3} - C O - C H_{2} C H_{2} C H_{2} C H_{3}$ ?

Discussion

33.	Considera certain reaction A → Products with k= 2.0 ×10−2s−1.Calculate the concentration of Aremainingafter 100 s if the initial concentration of Ais 1.0 molL−1.
Answer» Consider a certain reaction A → Products with k = 2.0 × 10⁻²s⁻¹. Calculate the concentration of A remaining after 100 s if the initial concentration of A is 1.0 mol L⁻¹.

Discussion

34.	The functional group for carboxylic acid is
Answer» The functional group for carboxylic acid is

Discussion

35.	What is pka and ph of amino acids?How they can be related with each other by Henderson-hasselbalch equation?
Answer» What is pka and ph of amino acids?How they can be related with each other by Henderson-hasselbalch equation?

Discussion

36.	20. What is the exact volume of gas a NTP and STP and what is the temperature and pressure at both comditions
Answer» 20. What is the exact volume of gas a NTP and STP and what is the temperature and pressure at both comditions

Discussion

37.	The size of isoelectronic species — F– , Ne and Na+ is affected by (a) Nuclear charge (Z ) (b) Valence principal quantum number (n) (c) Electron-electron interaction in the outer orbitals (d) None of the factors because their size is the same.
Answer» The size of isoelectronic species — $F^{-}$ , Ne and $N a^{+}$ is affected by (a) Nuclear charge (Z ) (b) Valence principal quantum number (n) (c) Electron-electron interaction in the outer orbitals (d) None of the factors because their size is the same.

Discussion

38.	The correct order of magnitude of bond angles among the compounds CH4, NH3 and H2O is
Answer» The correct order of magnitude of bond angles among the compounds $C H_{4}, N H_{3} a n d H_{2} O$ is

Discussion

39.	46. 16g of O2 and 3g of H2 are mixed and kept at 760mm pressure and 273 K . The total volume occupied by mixture will nearly a. 22.4l b. 33.6l c. 448l d. 44800l
Answer» 46. 16g of O2 and 3g of H2 are mixed and kept at 760mm pressure and 273 K . The total volume occupied by mixture will nearly a. 22.4l b. 33.6l c. 448l d. 44800l

Discussion

40.	Passage of electricity through dilute solution of H2S o4 for one hour liberates a total of 224 ml H2 at STP the strength of current would be 1. 0.27 2. 0.54 3. 0.042 4. 0.027
Answer» Passage of electricity through dilute solution of H2S o4 for one hour liberates a total of 224 ml H2 at STP the strength of current would be 1. 0.27 2. 0.54 3. 0.042 4. 0.027

Discussion

41.	Which of the following molecules/species have minimum number of lone pairs?
Answer» Which of the following molecules/species have minimum number of lone pairs?

Discussion

42.	BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):
Answer» $B L i n d r a l / H_{2} \leftarrow ------ - R - C \equiv C - R N a / N H_{3} - ---- \to$ A and B are geometrical isomers (R - CH = CH - R):

42.

BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):

Answer»

$B L i n d r a l / H_{2} \leftarrow ------ - R - C \equiv C - R N a / N H_{3} - ---- \to$ A and B are geometrical isomers (R - CH = CH - R):

Discussion

43.	In the reaction Ar-OH + RX→ A,A is (a)an aldehyde (b)an ether (c)an aryl chloride (d)a ketone
Answer» In the reaction Ar-OH + RX→ A,A is (a)an aldehyde (b)an ether (c)an aryl chloride (d)a ketone

Discussion

44.	Predict precipitation of silver chloride when volume of 0.005M silver nitrate and 0.006 M sodium chloride is mixed if Ksp of silver chloride is 3.5 10 -6
Answer» Predict precipitation of silver chloride when volume of 0.005M silver nitrate and 0.006 M sodium chloride is mixed if Ksp of silver chloride is 3.5 10 -6

Discussion

45.	Equal moles of benzene and toulene r mixed .the VP of benzene and toulenein pure state r 700 and 600 mm Hg respectively.the mole fraction of benzene in vapour state is?
Answer» Equal moles of benzene and toulene r mixed .the VP of benzene and toulenein pure state r 700 and 600 mm Hg respectively.the mole fraction of benzene in vapour state is?

Discussion

46.	what is the order of stability of benzylic, allylic, 3 degree, 2 degree and 1 degree:i) free radicalii)carbocation
Answer» what is the order of stability of benzylic, allylic, 3 degree, 2 degree and 1 degree: i) free radical ii)carbocation

Discussion

47.	65.Is benzene electron withdrawing?
Answer» 65.Is benzene electron withdrawing?

Discussion

48.	What is the degree of hardness (ppm) for 1000l water contains 68mg of CaSO4?a)0.05b)5c)0.001d)0.00001Explain with solution.
Answer» What is the degree of hardness (ppm) for 1000l water contains 68mg of CaSO4? a)0.05 b)5 c)0.001 d)0.00001 Explain with solution.

Discussion

49.	What mass of He could be contained in a vessel that can holds 4.48 litre of SO2 at STP?Options: 0.9 g 1.6 g 2.8 g 0.8 g
Answer» What mass of He could be contained in a vessel that can holds 4.48 litre of SO2 at STP? Options: 0.9 g 1.6 g 2.8 g 0.8 g

Discussion

50.	50.what happens when bromocyclohexane reacts with magnesium in diethyl ether
Answer» 50.what happens when bromocyclohexane reacts with magnesium in diethyl ether

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The solubility of a solute in water varies with temperature as given by :S=Ae−ΔHRT,ΔH being the enthalpy of solution. For a given solute, variation of In S with temperature is as shown in the figure. The solute is expected to be ?

Which of the following cannot exist on the basis of MO theory?

what is meant by standard conditions in a processlike G^0

An element crystallizes in a body-centered cubic unit cell. If two of the atoms from the corners are removed. Calculate the packing fraction.

What is the correct order of dehydration of the following compounds in presence of acidic medium?

Which of the following salt in dry heating test turn pink on cooling and blue on heating?

As the (V)BE and (V)CE are potential barriers, so while writing kirchhoff law why aren't they negative sign

Calculate the weight of FeO produced from 2gVO and 5.75g of Fe2O3. Also report the limiting reagent.Given : VO+Fe2O3→FeO+V2O5

how to calculate no of voids

How many of the following can given Fehling solution test ? (i) HCHO (ii) CH3CHO (iii) PhCHO (iv)(v) (vi) (vii) Glucose (viii) Fructose

What happens when you pour some acetone on your palm?

A test consists of 6 multiple choice questions, each having 4 alternative answers of which only one is correct. The number of ways, in which a candidate answers all six questions such that exactly four of the answers are correct, is

Is there any difference between molar heat capacity and molar specific heat?

Explain Hund&quots rule about molecular orbital theory

For an ideal binary solution (A) and (B), yA is the mole fraction of A in vapour phase. Which of the following plot should be linear?

13. If (X2+x-12) divides X3+ax2+bx-84 completely.Find the values of a and b

In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4 eV. The KE of electron in this orbit

Which of the following contain maximum number of molecules at STP 100g of CaCO3 44.8 L of O3, 2g of H2 and 16g of O2.

Polytheleneglycols are used in the preparation of which type of detergents? a) Cationic detergents b) Anionic detergents c) Non-ionic detergents d) Soaps

4gH2,32g o2 ,14gn2 and 1 g co2 are taken in a bulb of 500 ml which one of these have max active mass 1)H2 2)O2 3)N2 4)CO2

Why pentan-3-one doesnt give sodium bisulphite test?

A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. The change in internal energy ΔU of the gas in joules will be:

Teflon is a polymer obtained from

The most stable keto isomer of the following compound

which products are formed in e1 & e2 reactions , inversion or retention?

Total number of chriral centre present in the given compound is

30. A solution of urea in water is labelled as 20% by weight. The molality of the solution is

complement of sets we'd it's properties

The substance which contains both SP and SP3 hybridized carbon atoms is A) ​​​​n-butene B) isobutane C) 2 butyne D) 1, 3 butadiene

what is suitable ratio of neutrons and protons for the nuclei to be stable?

what is the different of fundamental quantities and drivied quantities?

Which organic compound among the following is not an isomer of CH3−CO−CH2CH2CH2CH3?

Considera certain reaction A → Products with k= 2.0 ×10−2s−1.Calculate the concentration of Aremainingafter 100 s if the initial concentration of Ais 1.0 molL−1.

The functional group for carboxylic acid is

What is pka and ph of amino acids?How they can be related with each other by Henderson-hasselbalch equation?

20. What is the exact volume of gas a NTP and STP and what is the temperature and pressure at both comditions

The size of isoelectronic species — F– , Ne and Na+ is affected by (a) Nuclear charge (Z ) (b) Valence principal quantum number (n) (c) Electron-electron interaction in the outer orbitals (d) None of the factors because their size is the same.

The correct order of magnitude of bond angles among the compounds CH4, NH3 and H2O is

46. 16g of O2 and 3g of H2 are mixed and kept at 760mm pressure and 273 K . The total volume occupied by mixture will nearly a. 22.4l b. 33.6l c. 448l d. 44800l

Passage of electricity through dilute solution of H2S o4 for one hour liberates a total of 224 ml H2 at STP the strength of current would be 1. 0.27 2. 0.54 3. 0.042 4. 0.027

Which of the following molecules/species have minimum number of lone pairs?

BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):

In the reaction Ar-OH + RX→ A,A is (a)an aldehyde (b)an ether (c)an aryl chloride (d)a ketone

Predict precipitation of silver chloride when volume of 0.005M silver nitrate and 0.006 M sodium chloride is mixed if Ksp of silver chloride is 3.5 10 -6

Equal moles of benzene and toulene r mixed .the VP of benzene and toulenein pure state r 700 and 600 mm Hg respectively.the mole fraction of benzene in vapour state is?

what is the order of stability of benzylic, allylic, 3 degree, 2 degree and 1 degree:i) free radicalii)carbocation

65.Is benzene electron withdrawing?

What is the degree of hardness (ppm) for 1000l water contains 68mg of CaSO4?a)0.05b)5c)0.001d)0.00001Explain with solution.

What mass of He could be contained in a vessel that can holds 4.48 litre of SO2 at STP?Options: 0.9 g 1.6 g 2.8 g 0.8 g

50.what happens when bromocyclohexane reacts with magnesium in diethyl ether

The substance which contains both SP and SP3 hybridized carbon atoms is A) n-butene B) isobutane C) 2 butyne D) 1, 3 butadiene