46295 + Interview Questions in Chemistry

1.	When does a rigid body is said to be in partial pressure? With examples
Answer» When does a rigid body is said to be in partial pressure? With examples

Discussion

2.	For the equilibrium N2O4⇌2NO2 (GoN2O4)298K=100kJmol−1 and (GoNO2)298K=50kJmol−1. When 5 mole/litre of each is taken, calculate the value of △G in kJ mol−1 for the reaction at 298 K.(nearest integer)
Answer» For the equilibrium $N_{2} O_{4} ⇌ 2 N O_{2}$ $(G_{N_{2} O_{4}}^{o})_{298 K} = 100 k J m o l^{- 1} a n d (G_{N O_{2}}^{o})_{298 K} = 50 k J m o l^{- 1} .$ When 5 mole/litre of each is taken, calculate the value of $△ G$ in $k J m o l^{- 1}$ for the reaction at 298 K.(nearest integer)

Discussion

3.	What are saturated hydrocarbons? Mention any three saturated hydrocarbons.
Answer» What are saturated hydrocarbons? Mention any three saturated hydrocarbons.

Discussion

4.	18. mechanism of wurtz reactionan preparation of alkanes from RMgX
Answer» 18. mechanism of wurtz reactionan preparation of alkanes from RMgX

Discussion

5.	An organic compound A of molecular formula C2H6O on oxidation gives an acid B with the same number of carbon atom as A. Compound A is also used in preparation of tincture iodine.Select the correct structure of compounds A and B respectively.
Answer» An organic compound A of molecular formula $C_{2} H_{6} O$ on oxidation gives an acid B with the same number of carbon atom as A. Compound A is also used in preparation of tincture iodine. Select the correct structure of compounds A and B respectively.

Discussion

6.	why is fluorine more electronegative than chlorine,bromine and iodine?
Answer» why is fluorine more electronegative than chlorine,bromine and iodine?

Discussion

7.	In a face centered cubic lattice, atom (A) occupies the corner positions and atom (B) occupies the face centre positions. If one atom of (B) is missing from one of the face centered points, the formula of the compound is:
Answer» In a face centered cubic lattice, atom $(A)$ occupies the corner positions and atom $(B)$ occupies the face centre positions. If one atom of $(B)$ is missing from one of the face centered points, the formula of the compound is:

Discussion

8.	22. two different solutions mixed into 1:3 mass ratio if first solution contain 5% urea and second solution contain 10 % glucose then what will be the freezing point of solution.
Answer» 22. two different solutions mixed into 1:3 mass ratio if first solution contain 5% urea and second solution contain 10 % glucose then what will be the freezing point of solution.

Discussion

9.	explain principal azimuthal magnetic and spin quantum numbers
Answer» explain principal azimuthal magnetic and spin quantum numbers

Discussion

10.	The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them[AIIMS 1991]
Answer» The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them [AIIMS 1991]

10.

The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them[AIIMS 1991]

Answer»

The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them

[AIIMS 1991]

Discussion

11.	The total number of electron in 4.2g of N^3- ion is
Answer» The total number of electron in 4.2g of N^3- ion is

Discussion

12.	When n-octanamide is reacted with Br2/KOH the product formed is :
Answer» When n-octanamide is reacted with Br2/KOH the product formed is :

Discussion

13.	Find the magnitude of net force acting on Q at centre atom of a regular hexagon having like and equal charges
Answer» Find the magnitude of net force acting on Q at centre atom of a regular hexagon having like and equal charges

Discussion

14.	How to find acidity of hydro carbons .
Answer» How to find acidity of hydro carbons .

Discussion

15.	Why can't cubic unit cells have end centered variation ?
Answer» Why can't cubic unit cells have end centered variation ?

Discussion

16.	how many acids can be taken to obtain isobu†an e by decarboxylation
Answer» how many acids can be taken to obtain isobu†an e by decarboxylation

Discussion

17.	Please explain shielding effect .
Answer» Please explain shielding effect .

Discussion

18.	Which one of the following molecules is formed by p−p overlapping?
Answer» Which one of the following molecules is formed by $p - p$ overlapping?

Discussion

19.	Which of the following describes the correct relation for hydrolysis constant (Kh) for a salt of weak acid and weak base at 25∘C ?
Answer» Which of the following describes the correct relation for hydrolysis constant $(K_{h})$ for a salt of weak acid and weak base at $25^{\circ} C ?$

Discussion

20.	A solid crystal is composed of X, Y and Z atoms. Z atoms (radius 200 pm) form cubic close packed structure, whereas X atoms (radius 50 pm) and Y atoms (radius 100 pm) occupy the respective voids. Assume all the voids to be occupied. If all the atoms along one body diagonal are removed, then the formula of the compound becomes:
Answer» A solid crystal is composed of $X, Y$ and $Z$ atoms. $Z$ atoms (radius $200 pm$ ) form cubic close packed structure, whereas $X$ atoms (radius $50 pm$ ) and $Y$ atoms (radius $100 pm$ ) occupy the respective voids. Assume all the voids to be occupied. If all the atoms along one body diagonal are removed, then the formula of the compound becomes:

Discussion

21.	Why is it essential to wash the precipitate with water before estimating it quantitatively?
Answer» Why is it essential to wash the precipitate with water before estimating it quantitatively?

Discussion

22.	write increasing order of their bond angle Ch4 ; C2h4 ; C2h2 with reason
Answer» write increasing order of their bond angle Ch4 ; C2h4 ; C2h2 with reason

Discussion

23.	An ideal gas is expanded from volume V0 to 2V0 under three different processes. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1, ΔU2 and ΔU3 be the change in internal energy of the gas in these three processes respectively, then
Answer» An ideal gas is expanded from volume $V_{0}$ to $2 V_{0}$ under three different processes. Process $1$ is isobaric process, process $2$ is isothermal and process $3$ is adiabatic. Let $Δ U_{1}, Δ U_{2}$ and $Δ U_{3}$ be the change in internal energy of the gas in these three processes respectively, then

Discussion

24.	What is the pH range of gastric juices?
Answer» What is the pH range of gastric juices?

Discussion

25.	Pottassium crystallizes in a bcc lattice.how many unit cell are present in the 2g k
Answer» Pottassium crystallizes in a bcc lattice.how many unit cell are present in the 2g k

Discussion

26.	Ammonium hydrogen sulphide dissociates according to the equation NH4HS(s)⇌NH3(g)+H2S(g). If the observed pressure of the mixture is 1.12 atm at 106oC, what is the equilibrium constant Kp of the reaction?
Answer» Ammonium hydrogen sulphide dissociates according to the equation $N H_{4} H S (s) ⇌ N H_{3} (g) + H_{2} S (g) .$ If the observed pressure of the mixture is $1.12 a t m$ at $106^{o} C,$ what is the equilibrium constant $K_{p}$ of the reaction?

Discussion

27.	Gram equivalent volume ofO2 at stp is 1-11.2 ,1-5.6l,3-22.4l,4-2.8
Answer» Gram equivalent volume ofO2 at stp is 1-11.2 ,1-5.6l,3-22.4l,4-2.8

Discussion

28.	Find A and B in the given reaction ?CH3−CH2−CH2−COOH+NaOH△−−→CaOA+B
Answer» Find A and B in the given reaction ? $C H_{3} - C H_{2} - C H_{2} - C O O H + N a O H △ - - \to C a O A + B$

Discussion

29.	The correct functional group X and the reagent / reaction conditions Y in the following schemes are
Answer» The correct functional group X and the reagent / reaction conditions Y in the following schemes are

Discussion

30.	Why we use expension rule and what is L'hospital rule
Answer» Why we use expension rule and what is L'hospital rule

Discussion

31.	How many grams of NaBr must be added to 250 gram of water to lower the vapor pressure by 1.33 mm Hg assuming complete dissociation . [vapor pressure of water at 40 degree celsius is 55.3 mm Hg]
Answer» How many grams of NaBr must be added to 250 gram of water to lower the vapor pressure by 1.33 mm Hg assuming complete dissociation . [vapor pressure of water at 40 degree celsius is 55.3 mm Hg]

Discussion

32.	Which of the following dissociates to give H+ most easily?
Answer» Which of the following dissociates to give $H^{+}$ most easily?

Discussion

33.	IP of Be is more than B. Why
Answer» IP of Be is more than B. Why

Discussion

34.	H2O2 reduces K4F(CN) 6 in which medium
Answer» H2O2 reduces K4F(CN) 6 in which medium

Discussion

35.	A balloon containing 1 mol of air initiallyat 1 atm is filled further with air till the pressure increases to 4 atm. The initial diameter of the balloon is 1 m and the pressure at each stage is proportional to diameter of the balloon. How many moles of air was to change the pressure from 1 atm to 4 atm?
Answer» A balloon containing 1 mol of air initiallyat 1 atm is filled further with air till the pressure increases to 4 atm. The initial diameter of the balloon is $1 m$ and the pressure at each stage is proportional to diameter of the balloon. How many moles of air was to change the pressure from 1 atm to 4 atm?

Discussion

36.	why hydrogen does not have a definite position in periodic table
Answer» why hydrogen does not have a definite position in periodic table

Discussion

37.	Hybridization of [mn(cn)6]3-
Answer» Hybridization of [mn(cn)6]3-

Discussion

38.	59. Compare the dipole moment of CHCl3 and CH3Cl. which one will have greater dipole moment and why?
Answer» 59. Compare the dipole moment of CHCl3 and CH3Cl. which one will have greater dipole moment and why?

Discussion

39.	gghh 12345 steps to balance the chemical equatio
Answer» gghh 12345 steps to balance the chemical equatio

Discussion

40.	OXIDATION STATE OF N IN N3H IS ?OXIDATION STATE OF P IN H4P2O5,H4P2O6,H4P2O7 IS ?
Answer» OXIDATION STATE OF N IN N3H IS ? OXIDATION STATE OF P IN H4P2O5,H4P2O6,H4P2O7 IS ?

Discussion

41.	Which are true statements among the following ? (A) PH5 and BiCl5 do not exist (B) Bond order of CO2−3 is 1.33 (C) SeF4 and CH4 have same shape (D) I+3 has bent geometry (E) The number of Pπ−dπ bonds in SO2&SO3 are same
Answer» Which are true statements among the following ? (A) $P H_{5}$ and $B i C l_{5}$ do not exist (B) Bond order of $C O_{3}^{2 -}$ is 1.33 (C) $S e F_{4} a n d C H_{4}$ have same shape (D) $I_{3}^{+}$ has bent geometry (E) The number of $P_{π} - d_{π}$ bonds in $S O_{2} & S O_{3}$ are same

Discussion

42.	What do you mean by the native state?
Answer» What do you mean by the native state?

Discussion

43.	how to convert etanenitrile from ethanamide
Answer» how to convert etanenitrile from ethanamide

Discussion

44.	if the mole fraction of urea in its aqueous solution is 0.1 then the molality of solution woill b
Answer» if the mole fraction of urea in its aqueous solution is 0.1 then the molality of solution woill b

Discussion

45.	Dental amalgam is composed of:
Answer» Dental amalgam is composed of:

Discussion

46.	Product(s) of the reaction is/are:
Answer» Product(s) of the reaction is/are:

Discussion

47.	Difference between polyatomic atoms and monotonic atoms?
Answer» Difference between polyatomic atoms and monotonic atoms?

Discussion

48.	A compound AB crystallises in bcc lattice with unit cell edge length of 480 pm. If radius of B-(anion) is 225 pm then radius of A+(cation) is
Answer» A compound AB crystallises in bcc lattice with unit cell edge length of 480 pm. If radius of B-(anion) is 225 pm then radius of A+(cation) is

Discussion

49.	how to find geometrical polyenes for even and odd
Answer» how to find geometrical polyenes for even and odd

Discussion

50.	Number of carbons in selected principal carbon chain for IUPAC nomenclature will be
Answer» Number of carbons in selected principal carbon chain for IUPAC nomenclature will be

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

When does a rigid body is said to be in partial pressure? With examples

For the equilibrium N2O4⇌2NO2 (GoN2O4)298K=100kJmol−1 and (GoNO2)298K=50kJmol−1. When 5 mole/litre of each is taken, calculate the value of △G in kJ mol−1 for the reaction at 298 K.(nearest integer)

What are saturated hydrocarbons? Mention any three saturated hydrocarbons.

18. mechanism of wurtz reactionan preparation of alkanes from RMgX

An organic compound A of molecular formula C2H6O on oxidation gives an acid B with the same number of carbon atom as A. Compound A is also used in preparation of tincture iodine.Select the correct structure of compounds A and B respectively.

why is fluorine more electronegative than chlorine,bromine and iodine?

In a face centered cubic lattice, atom (A) occupies the corner positions and atom (B) occupies the face centre positions. If one atom of (B) is missing from one of the face centered points, the formula of the compound is:

22. two different solutions mixed into 1:3 mass ratio if first solution contain 5% urea and second solution contain 10 % glucose then what will be the freezing point of solution.

explain principal azimuthal magnetic and spin quantum numbers

The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them[AIIMS 1991]

The total number of electron in 4.2g of N^3- ion is

When n-octanamide is reacted with Br2/KOH the product formed is :

Find the magnitude of net force acting on Q at centre atom of a regular hexagon having like and equal charges

How to find acidity of hydro carbons .

Why can't cubic unit cells have end centered variation ?

how many acids can be taken to obtain isobu†an e by decarboxylation

Please explain shielding effect .

Which one of the following molecules is formed by p−p overlapping?

Which of the following describes the correct relation for hydrolysis constant (Kh) for a salt of weak acid and weak base at 25∘C ?

Why is it essential to wash the precipitate with water before estimating it quantitatively?

write increasing order of their bond angle Ch4 ; C2h4 ; C2h2 with reason

An ideal gas is expanded from volume V0 to 2V0 under three different processes. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1, ΔU2 and ΔU3 be the change in internal energy of the gas in these three processes respectively, then

What is the pH range of gastric juices?

Pottassium crystallizes in a bcc lattice.how many unit cell are present in the 2g k

Ammonium hydrogen sulphide dissociates according to the equation NH4HS(s)⇌NH3(g)+H2S(g). If the observed pressure of the mixture is 1.12 atm at 106oC, what is the equilibrium constant Kp of the reaction?

Gram equivalent volume ofO2 at stp is 1-11.2 ,1-5.6l,3-22.4l,4-2.8

Find A and B in the given reaction ?CH3−CH2−CH2−COOH+NaOH△−−→CaOA+B

The correct functional group X and the reagent / reaction conditions Y in the following schemes are

Why we use expension rule and what is L'hospital rule

How many grams of NaBr must be added to 250 gram of water to lower the vapor pressure by 1.33 mm Hg assuming complete dissociation . [vapor pressure of water at 40 degree celsius is 55.3 mm Hg]

Which of the following dissociates to give H+ most easily?

IP of Be is more than B. Why

H2O2 reduces K4F(CN) 6 in which medium

why hydrogen does not have a definite position in periodic table

Hybridization of [mn(cn)6]3-

59. Compare the dipole moment of CHCl3 and CH3Cl. which one will have greater dipole moment and why?

gghh 12345 steps to balance the chemical equatio

OXIDATION STATE OF N IN N3H IS ?OXIDATION STATE OF P IN H4P2O5,H4P2O6,H4P2O7 IS ?

Which are true statements among the following ? (A) PH5 and BiCl5 do not exist (B) Bond order of CO2−3 is 1.33 (C) SeF4 and CH4 have same shape (D) I+3 has bent geometry (E) The number of Pπ−dπ bonds in SO2&amp;SO3 are same

What do you mean by the native state?

how to convert etanenitrile from ethanamide

if the mole fraction of urea in its aqueous solution is 0.1 then the molality of solution woill b

Dental amalgam is composed of:

Product(s) of the reaction is/are:

Difference between polyatomic atoms and monotonic atoms?

A compound AB crystallises in bcc lattice with unit cell edge length of 480 pm. If radius of B-(anion) is 225 pm then radius of A+(cation) is

how to find geometrical polyenes for even and odd

Number of carbons in selected principal carbon chain for IUPAC nomenclature will be

Which are true statements among the following ? (A) PH5 and BiCl5 do not exist (B) Bond order of CO2−3 is 1.33 (C) SeF4 and CH4 have same shape (D) I+3 has bent geometry (E) The number of Pπ−dπ bonds in SO2&SO3 are same