46295 + Interview Questions in Chemistry

1.	The volume of CO2 evolved at STP on heating 50g CaCO3 will be?
Answer» The volume of CO2 evolved at STP on heating 50g CaCO3 will be?

Discussion

2.	If A = (–∞, ∞) and B = [0, ∞), C = (–∞, 0] then (B ∪ C) – A = ?{0}Rfie{fie
Answer» If A = (–∞, ∞) and B = [0, ∞), C = (–∞, 0] then (B ∪ C) – A = ? {0} R fie {fie

Discussion

3.	What is anisotropic solid
Answer» What is anisotropic solid

Discussion

4.	One mole of a monoatomic real gas satisfies the equation p(V−b)=RT where b is a constant. The relationship of interatomic potential V(r) and interatomic distance r for the gas is given by
Answer» One mole of a monoatomic real gas satisfies the equation $p (V - b) = R T$ where b is a constant. The relationship of interatomic potential V(r) and interatomic distance r for the gas is given by

Discussion

5.	Given N2 +3H2 =2NH3 and standard enthalpy is -92.4kj/mol Then find the standard enthalpy of formation of nh3 gas
Answer» Given N₂ +3H2 =2NH3 and standard enthalpy is -92.4kj/mol Then find the standard enthalpy of formation of nh3 gas

Discussion

6.	A Δ ABC is right angled at B. Then, the diameter of the incircle of the triangle is
Answer» A $Δ$ ABC is right angled at B. Then, the diameter of the incircle of the triangle is

Discussion

7.	Homolytic fission of CF3-CF3 in carbon-carbon single bond produces an intermediate.The hybrid state of carbon in that intermediate isspsp2sp3sp3d
Answer» Homolytic fission of CF3-CF3 in carbon-carbon single bond produces an intermediate.The hybrid state of carbon in that intermediate is sp sp2 sp3 sp3d

Discussion

8.	A particle at edge centre of a unit cell contributes how much part to that unit cell?
Answer» A particle at edge centre of a unit cell contributes how much part to that unit cell?

Discussion

9.	28. In NaCl Crystal actual radius is 0.525. if the radius of Cl- ion is 250 pm then the minimum distance between two cl- ions will be?
Answer» 28. In NaCl Crystal actual radius is 0.525. if the radius of Cl- ion is 250 pm then the minimum distance between two cl- ions will be?

Discussion

10.	8g of helium and 4g of h2 are present in a closed vessel at 127degree celcious.if pressure exerted by the gas mixture is 4.1atm then the vlume of thecontainer is
Answer» 8g of helium and 4g of h2 are present in a closed vessel at 127degree celcious.if pressure exerted by the gas mixture is 4.1atm then the vlume of thecontainer is

Discussion

11.	40. No. Of electrons in the orbital with n=3 and l= 0??
Answer» 40. No. Of electrons in the orbital with n=3 and l= 0??

Discussion

12.	At700 K, equilibrium constant for the reactionis54.8. If 0.5 molL–1of HI(g)is present at equilibrium at 700 K, what are the concentration ofH2(g)and I2(g)assuming that we initially started with HI(g)and allowed it to reach equilibrium at 700 K?
Answer» At 700 K, equilibrium constant for the reaction is 54.8. If 0.5 molL^–1 of HI₍_g₎ is present at equilibrium at 700 K, what are the concentration of H₂₍_g₎ and I₂₍_g₎ assuming that we initially started with HI₍_g₎ and allowed it to reach equilibrium at 700 K?

12.

At700 K, equilibrium constant for the reactionis54.8. If 0.5 molL–1of HI(g)is present at equilibrium at 700 K, what are the concentration ofH2(g)and I2(g)assuming that we initially started with HI(g)and allowed it to reach equilibrium at 700 K?

Answer»

At
700 K, equilibrium constant for the reaction

is
54.8. If 0.5 molL^–1
of HI₍_g₎
is present at equilibrium at 700 K, what are the concentration of
H₂₍_g₎
and I₂₍_g₎
assuming that we initially started with HI₍_g₎
and allowed it to reach equilibrium at 700 K?

Discussion

13.	Which of the following represents the staggered conformation with dihedral angle ϕ=60∘ ?
Answer» Which of the following represents the staggered conformation with dihedral angle $ϕ = 60^{\circ}$ ?

Discussion

14.	How to find charge on an element or compound for finding its oxidation number?
Answer» How to find charge on an element or compound for finding its oxidation number?

Discussion

15.	Question 30Drawthe electron dot structure of ethyne and also draw its structural formula
Answer» Question 30 Drawthe electron dot structure of ethyne and also draw its structural formula

Discussion

16.	In BrF3, molecule is it so that the number of F-Br-F angles at 90 degree is 0 ? And to which other molecules is this applicable ?
Answer» In BrF3, molecule is it so that the number of F-Br-F angles at 90 degree is 0 ? And to which other molecules is this applicable ?

Discussion

17.	Explain light and dark reaction
Answer» Explain light and dark reaction

Discussion

18.	Arrhenius neutralization is described as
Answer» Arrhenius neutralization is described as

Discussion

19.	The no. Of electrons in 50 C charge is
Answer» The no. Of electrons in 50 C charge is

Discussion

20.	Which of the following contains least number of molecule (1) 4.4g CO2 (2) 3.4g NH3 (3) 1.6g CH4 (4) 3.2g SO2
Answer» Which of the following contains least number of molecule (1) 4.4g CO2 (2) 3.4g NH3 (3) 1.6g CH4 (4) 3.2g SO2

Discussion

21.	29. Assume each reaction is carried out in an opencontainer. For which reaction will AH= AE?\lbrack AIPMT (Prelims)-2006\rbrack(1) H2(g) +Br2(g)2HBr(g)2H2(g) + CO,(g)(2) C(s) + 2H2O(g)2H2(g)+ CO(g)(3) PCI5(g)(4) 2CO(g) + 02(g)PCI,(g) + Cl(g)2CO2(g)
Answer» 29. Assume each reaction is carried out in an opencontainer. For which reaction will AH= AE?\lbrack AIPMT (Prelims)-2006\rbrack(1) H2(g) +Br2(g)2HBr(g)2H2(g) + CO,(g)(2) C(s) + 2H2O(g)2H2(g)+ CO(g)(3) PCI5(g)(4) 2CO(g) + 02(g)PCI,(g) + Cl(g)2CO2(g)

Discussion

22.	Q. Container A contains a gas which is compressed by piston at a pressure. By heating the gas at temperature 25°C it occupies 15 ml of volume. Now the container B contains same gas compressed by same pressure is heated at 35°C , how much volume will the gas occupy?
Answer» Q. Container A contains a gas which is compressed by piston at a pressure. By heating the gas at temperature 25°C it occupies 15 ml of volume. Now the container B contains same gas compressed by same pressure is heated at 35°C , how much volume will the gas occupy?

Discussion

23.	76.Which would go in sn1 reaction Cyclohexylcloromethane Or c6h5ch2cl
Answer» 76.Which would go in sn1 reaction Cyclohexylcloromethane Or c6h5ch2cl

Discussion

24.	Which one of the following is most stable?
Answer» Which one of the following is most stable?

Discussion

25.	Which of the following mixtures of gases does not obey Dalton's law of partial pressure
Answer» Which of the following mixtures of gases does not obey Dalton's law of partial pressure

Discussion

26.	cyclohexene on oxidative ozonolysis yields (1)CH3CH2CHO(2MOLES)(2)acetone(2 moles)(3)HOOC-(CH2)4-COOH(4)OHC-(CH2)4-CHO
Answer» cyclohexene on oxidative ozonolysis yields (1)CH3CH2CHO(2MOLES) (2)acetone(2 moles) (3)HOOC-(CH2)4-COOH (4)OHC-(CH2)4-CHO

Discussion

27.	The polymers which are prepared in the laboratories are called:
Answer» The polymers which are prepared in the laboratories are called:

Discussion

28.	Uncertainty in the position of an electron (mass 9.1 x 10-31 kg) moving with a velocity of 300 ms-1, accurate upto 0.001% will be:
Answer» Uncertainty in the position of an electron (mass 9.1 x 10^-31 kg) moving with a velocity of 300 ms^-1, accurate upto 0.001% will be:

Discussion

29.	Predict major organic product from the following reaction.
Answer» Predict major organic product from the following reaction.

Discussion

30.	The equilibrium composition for the reaction is - PCl3+Cl2⇌PCl5 0.20 0.10 0.40 mole/litre If 0.20 mole of Cl2 is added at same temp. Find equilibrium concentration of PCl5 KC=20
Answer» The equilibrium composition for the reaction is - $P C l_{3} + C l_{2} ⇌ P C l_{5}$ 0.20 0.10 0.40 mole/litre If 0.20 mole of $C l_{2}$ is added at same temp. Find equilibrium concentration of $P C l_{5}$ $K_{C} = 20$

30.

The equilibrium composition for the reaction is - PCl3+Cl2⇌PCl5 0.20 0.10 0.40 mole/litre If 0.20 mole of Cl2 is added at same temp. Find equilibrium concentration of PCl5 KC=20

Answer»

The equilibrium composition for the reaction is -

$P C l_{3} + C l_{2} ⇌ P C l_{5}$

0.20 0.10 0.40 mole/litre

If 0.20 mole of $C l_{2}$ is added at same temp. Find equilibrium concentration of $P C l_{5}$ $K_{C} = 20$

Discussion

31.	1/4 + 1/t = 3/8 find the value of 't'
Answer» 1/4 + 1/t = 3/8 find the value of 't'

Discussion

32.	normality of mixture obtaining by mixing 100 ml of 0.3 M H2 SO4 and 100ml of 0.2M NaOH? which formula should be use?
Answer» normality of mixture obtaining by mixing 100 ml of 0.3 M H2 SO4 and 100ml of 0.2M NaOH? which formula should be use?

Discussion

33.	7. NH+IO+2H+Cl-------->ICl+N+3HO Equivalent mass of NH and KIO respectively are: A) 8 and 35.6 B) 8 and 87 C) 8 and 53.5 D) 16 and 53.5
Answer» 7. NH+IO+2H+Cl-------->ICl+N+3HO Equivalent mass of NH and KIO respectively are: A) 8 and 35.6 B) 8 and 87 C) 8 and 53.5 D) 16 and 53.5

Discussion

34.	If the aluminum unit cell exhibits face-centered behavior then how many unit cells are present in 54g of aluminum?
Answer» If the aluminum unit cell exhibits face-centered behavior then how many unit cells are present in 54g of aluminum?

Discussion

35.	40.What is the trend for +5 oxidation state as we go from nitrogen to bismuth?
Answer» 40.What is the trend for +5 oxidation state as we go from nitrogen to bismuth?

Discussion

36.	Deviations from ideal behavior will be more if the gas is subjected to:
Answer» Deviations from ideal behavior will be more if the gas is subjected to:

Discussion

37.	There are n electrons of charge e on a spherical drop of oil of density p(rho). It is in equilibrium in an electric field E. Then the radius of the drop is (g is the acceleration due to gravity)
Answer» There are n electrons of charge e on a spherical drop of oil of density p(rho). It is in equilibrium in an electric field E. Then the radius of the drop is (g is the acceleration due to gravity)

Discussion

38.	17.The number of waves made by a Bohr electron in one compllete revolution in 4th orbit- A)2 B)3 C)4 D)infinite
Answer» 17.The number of waves made by a Bohr electron in one compllete revolution in 4th orbit- A)2 B)3 C)4 D)infinite

Discussion

39.	1 kg of CaCO3 is taken in a container of volume 83L dissociates according to the reaction: CaCO3(s)⇌ CaO(s)+CO2(g) at 727∘ C, if pressure at equilibrium is found to be 6 atm then amount of CaO formed is:
Answer» 1 kg of $C a C O_{3}$ is taken in a container of volume 83L dissociates according to the reaction: $C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)$ at $727^{\circ} C$ , if pressure at equilibrium is found to be 6 atm then amount of CaO formed is:

Discussion

40.	Write the IUPAC name of the following compound:H3C−C\|CH3=C\|Br−CH2−OH
Answer» Write the IUPAC name of the following compound: $H_{3} C - C \| C H_{3} = C \| B r - C H_{2} - O H$

Discussion

41.	Why only sea appears blue not the river
Answer» Why only sea appears blue not the river

Discussion

42.	What is significant figure and where it is used
Answer» What is significant figure and where it is used

Discussion

43.	Find the minimum concentration of Pb2+ ions that will initiate the precipitation of PbSO4 from a solution containing 0.005 mol L−1 of SO2−4 ions? (Given Ksp for BaSO4=1.8×10−8 )
Answer» Find the minimum concentration of $P b^{2 +}$ ions that will initiate the precipitation of $P b S O_{4}$ from a solution containing $0.005 m o l L^{- 1}$ of $S O_{4}^{2 -}$ ions? (Given $K_{s p}$ for $B a S O_{4} = 1.8 \times 10^{- 8}$ )

Discussion

44.	Which of the following statement is true regarding esterification of a carboxylic with an alcohol ?(i) It is carried out in presence of a strong acid which acts as a catalyst.(ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon.(iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile.(iv) Esterification can be done even in absence of a strong, acid.
Answer» Which of the following statement is true regarding esterification of a carboxylic with an alcohol ? (i) It is carried out in presence of a strong acid which acts as a catalyst. (ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon. (iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile. (iv) Esterification can be done even in absence of a strong, acid.

44.

Which of the following statement is true regarding esterification of a carboxylic with an alcohol ?(i) It is carried out in presence of a strong acid which acts as a catalyst.(ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon.(iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile.(iv) Esterification can be done even in absence of a strong, acid.

Answer»

Which of the following statement is true regarding esterification of a carboxylic with an alcohol ?

(i) It is carried out in presence of a strong acid which acts as a catalyst.

(ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon.

(iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile.

(iv) Esterification can be done even in absence of a strong, acid.

Discussion

45.	Who was Al-Biruni?
Answer» Who was Al-Biruni?

Discussion

46.

Match the items given in Column I and Column II. Column I Column II(i)Saturated solution(a)Solution having the same osmotic pressure at a given temperature as that of the given solution.(ii)Binary solution(b)A solution whose osmotic pressure is less than that of another.(iii)Isotonic solution (c)Solution with two components(iv)Hypotonic solution(d)A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.(v)Solid Solution(e)A solution whose osmotic pressure is more than another. (vi)Hypertonic Solution(f)A solution in the solid phase

Answer»

Match the items given in Column I and Column II.

	Column I		Column II
$(i)$	Saturated solution	$(a)$	Solution having the same osmotic pressure at a given temperature as that of the given solution.
$(i i)$	Binary solution	$(b)$	A solution whose osmotic pressure is less than that of another.
$(i i i)$	Isotonic solution	$(c)$	Solution with two components
$(i v)$	Hypotonic solution	$(d)$	A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.
$(v)$	Solid Solution	$(e)$	A solution whose osmotic pressure is more than another.
$(v i)$	Hypertonic Solution	$(f)$	A solution in the solid phase

Discussion

47.	43.What effect ionisation energy Short trick to compare ionisation energy
Answer» 43.What effect ionisation energy Short trick to compare ionisation energy

Discussion

48.	Inter-molecular bonds are much __________ than the covalent bonds within a molecule.
Answer» Inter-molecular bonds are much __________ than the covalent bonds within a molecule.

Discussion

49.	Say no to all ___________ bags as far as possible.
Answer» Say no to all ___________ bags as far as possible.

Discussion

50.	Find the oxidation state of sodium in Na2O2.
Answer» Find the oxidation state of sodium in Na₂O₂.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The volume of CO2 evolved at STP on heating 50g CaCO3 will be?

If A = (–∞, ∞) and B = [0, ∞), C = (–∞, 0] then (B ∪ C) – A = ?{0}Rfie{fie

What is anisotropic solid

One mole of a monoatomic real gas satisfies the equation p(V−b)=RT where b is a constant. The relationship of interatomic potential V(r) and interatomic distance r for the gas is given by

Given N2 +3H2 =2NH3 and standard enthalpy is -92.4kj/mol Then find the standard enthalpy of formation of nh3 gas

A Δ ABC is right angled at B. Then, the diameter of the incircle of the triangle is

Homolytic fission of CF3-CF3 in carbon-carbon single bond produces an intermediate.The hybrid state of carbon in that intermediate isspsp2sp3sp3d

A particle at edge centre of a unit cell contributes how much part to that unit cell?

28. In NaCl Crystal actual radius is 0.525. if the radius of Cl- ion is 250 pm then the minimum distance between two cl- ions will be?

8g of helium and 4g of h2 are present in a closed vessel at 127degree celcious.if pressure exerted by the gas mixture is 4.1atm then the vlume of thecontainer is

40. No. Of electrons in the orbital with n=3 and l= 0??

At700 K, equilibrium constant for the reactionis54.8. If 0.5 molL–1of HI(g)is present at equilibrium at 700 K, what are the concentration ofH2(g)and I2(g)assuming that we initially started with HI(g)and allowed it to reach equilibrium at 700 K?

Which of the following represents the staggered conformation with dihedral angle ϕ=60∘ ?

How to find charge on an element or compound for finding its oxidation number?

Question 30Drawthe electron dot structure of ethyne and also draw its structural formula

In BrF3, molecule is it so that the number of F-Br-F angles at 90 degree is 0 ? And to which other molecules is this applicable ?

Explain light and dark reaction

Arrhenius neutralization is described as

The no. Of electrons in 50 C charge is

Which of the following contains least number of molecule (1) 4.4g CO2 (2) 3.4g NH3 (3) 1.6g CH4 (4) 3.2g SO2

29. Assume each reaction is carried out in an opencontainer. For which reaction will AH= AE?\lbrack AIPMT (Prelims)-2006\rbrack(1) H2(g) +Br2(g)2HBr(g)2H2(g) + CO,(g)(2) C(s) + 2H2O(g)2H2(g)+ CO(g)(3) PCI5(g)(4) 2CO(g) + 02(g)PCI,(g) + Cl(g)2CO2(g)

Q. Container A contains a gas which is compressed by piston at a pressure. By heating the gas at temperature 25°C it occupies 15 ml of volume. Now the container B contains same gas compressed by same pressure is heated at 35°C , how much volume will the gas occupy?

76.Which would go in sn1 reaction Cyclohexylcloromethane Or c6h5ch2cl

Which one of the following is most stable?

Which of the following mixtures of gases does not obey Dalton's law of partial pressure

cyclohexene on oxidative ozonolysis yields (1)CH3CH2CHO(2MOLES)(2)acetone(2 moles)(3)HOOC-(CH2)4-COOH(4)OHC-(CH2)4-CHO

The polymers which are prepared in the laboratories are called:

Uncertainty in the position of an electron (mass 9.1 x 10-31 kg) moving with a velocity of 300 ms-1, accurate upto 0.001% will be:

Predict major organic product from the following reaction.

The equilibrium composition for the reaction is - PCl3+Cl2⇌PCl5 0.20 0.10 0.40 mole/litre If 0.20 mole of Cl2 is added at same temp. Find equilibrium concentration of PCl5 KC=20

1/4 + 1/t = 3/8 find the value of 't'

normality of mixture obtaining by mixing 100 ml of 0.3 M H2 SO4 and 100ml of 0.2M NaOH? which formula should be use?

7. NH+IO+2H+Cl-------->ICl+N+3HO Equivalent mass of NH and KIO respectively are: A) 8 and 35.6 B) 8 and 87 C) 8 and 53.5 D) 16 and 53.5

If the aluminum unit cell exhibits face-centered behavior then how many unit cells are present in 54g of aluminum?

40.What is the trend for +5 oxidation state as we go from nitrogen to bismuth?

Deviations from ideal behavior will be more if the gas is subjected to:

There are n electrons of charge e on a spherical drop of oil of density p(rho). It is in equilibrium in an electric field E. Then the radius of the drop is (g is the acceleration due to gravity)

17.The number of waves made by a Bohr electron in one compllete revolution in 4th orbit- A)2 B)3 C)4 D)infinite

1 kg of CaCO3 is taken in a container of volume 83L dissociates according to the reaction: CaCO3(s)⇌ CaO(s)+CO2(g) at 727∘ C, if pressure at equilibrium is found to be 6 atm then amount of CaO formed is:

Write the IUPAC name of the following compound:H3C−C|CH3=C|Br−CH2−OH

Why only sea appears blue not the river

What is significant figure and where it is used

Find the minimum concentration of Pb2+ ions that will initiate the precipitation of PbSO4 from a solution containing 0.005 mol L−1 of SO2−4 ions? (Given Ksp for BaSO4=1.8×10−8 )

Who was Al-Biruni?

43.What effect ionisation energy Short trick to compare ionisation energy

Inter-molecular bonds are much __________ than the covalent bonds within a molecule.

Say no to all ___________ bags as far as possible.

Find the oxidation state of sodium in Na2O2.