46295 + Interview Questions in Chemistry Page 13 InterviewSolution

601.	63.An ideal gas expands along the path AB as shown in the p-V diagram.The work done is
Answer» 63.An ideal gas expands along the path AB as shown in the p-V diagram.The work done is

Discussion

602.	The absolute configuration of is
Answer» The absolute configuration of is

602.

The absolute configuration of is

Answer»

The absolute configuration of

is

Discussion

603.	In a reaction 2A + B A2B, the reactant A disappears at:
Answer» In a reaction 2A + B A₂B, the reactant A disappears at:

Discussion

604.	27.In chemical equilibrium rate constants of backward reaction is 7.5×10_4 and equilibrium conatant is1.5 .So rate constant of forward reaction is
Answer» 27.In chemical equilibrium rate constants of backward reaction is 7.5×10_4 and equilibrium conatant is1.5 .So rate constant of forward reaction is

Discussion

605.	The method of converting high boiling hydrocarbon into low boiling hydrocarbon is known as
Answer» The method of converting high boiling hydrocarbon into low boiling hydrocarbon is known as

Discussion

606.

Column -IColumn-IIA. 2s(P) n=4,l=2,m=0B. 2pz(Q)n=4,l=2,m=−2 or +2C. 4dx2−y2(R) n=2,l=1,m=0D. 4d2z(S) n=2,l=0,m=0Match the column -I with column -II

Answer»

Column -I	Column-II
A. $2 s$	(P) $n = 4, l = 2, m = 0$
B. $2 p_{z}$	(Q) $n = 4, l = 2, m = - 2 o r + 2$
C. $4 d_{x^{2} - y^{2}}$	(R) $n = 2, l = 1, m = 0$
D. $4 d_{z}^{2}$	(S) $n = 2, l = 0, m = 0$

Match the column -I with column -II

Discussion

607.	63. Molarity of Cl- when equal volumes of 0.5 M AgNO3 solution and 0.5M NaCl solution are mixed?
Answer» 63. Molarity of Cl- when equal volumes of 0.5 M AgNO3 solution and 0.5M NaCl solution are mixed?

Discussion

608.	The pH of mixture of 0.01 M HCl and 0.1 M CH3COOH is approximately equal to?
Answer» The pH of mixture of 0.01 M HCl and 0.1 M CH3COOH is approximately equal to?

Discussion

609.	Arrange the decreasing order of their reactivity with alkanes.
Answer» Arrange the decreasing order of their reactivity with alkanes.

Discussion

610.	2.An alloy consists of Cu at face centre, Au at body centre, Cr at edge centre Andre at corners.If all atoms touching 1tetrad axis of symmetry are removed , then find the new formula of the unit cell.
Answer» 2.An alloy consists of Cu at face centre, Au at body centre, Cr at edge centre Andre at corners.If all atoms touching 1tetrad axis of symmetry are removed , then find the new formula of the unit cell.

Discussion

611.	Which of the following compounds is aromatic?
Answer» Which of the following compounds is aromatic?

Discussion

612.	The crystal field splitting energy for octahedral (Δ0) and tetrahedral (Δt) complexes are related as :
Answer» The crystal field splitting energy for octahedral $(Δ_{0})$ and tetrahedral $(Δ_{t})$ complexes are related as :

Discussion

613.	The van der Waals parameters for gases W, X, Y and Z are:Gasa(atm L2 mol−2)b(L Mol−1)W4.00.027X8.00.030Y6.00.032Z12.00.027Which one of these gases has the lowest critical temperature?
Answer» The van der Waals parameters for gases $W, X, Y$ and $Z$ are: $\begin{matrix} G a s & a (a t m L^{2} m o l^{- 2}) & b (L M o l^{- 1}) W & 4.0 & 0.027 X & 8.0 & 0.030 Y & 6.0 & 0.032 Z & 12.0 & 0.027 \end{matrix}$ Which one of these gases has the lowest critical temperature?

Discussion

614.	while calculating molality from mole fraction why we neglect the moles of solute in denominator
Answer» while calculating molality from mole fraction why we neglect the moles of solute in denominator

Discussion

615.	Find the number of millimoles of KOH in a sample containing 30 KOH formula units.
Answer» Find the number of millimoles of KOH in a sample containing 30 KOH formula units.

Discussion

616.	Major products (A) and (B) respectively, are:
Answer» Major products (A) and (B) respectively, are:

Discussion

617.	Where should hydrogen be actually placed?
Answer» Where should hydrogen be actually placed?

Discussion

618.	0.22 g of an organic compound on Kjedahl's analysis gave enough NH3 to just neutralize 20cc of 0.1 N H2So4. calculate %of N2 in the compound
Answer» 0.22 g of an organic compound on Kjedahl's analysis gave enough NH3 to just neutralize 20cc of 0.1 N H2So4. calculate %of N2 in the compound

Discussion

619.	4. What is the volume of solution containing 1g mole of sugar that will give rise to an osmotic pressure of 1atm at STP?
Answer» 4. What is the volume of solution containing 1g mole of sugar that will give rise to an osmotic pressure of 1atm at STP?

Discussion

620.	In which of the following geometrical isomerism is possible a)CH_3CH=C(CH_3)_{} b)C_6H_{5 }N=NC_6H_5
Answer» In which of the following geometrical isomerism is possible a)CH_3CH=C(CH_3)_{} b)C_6H_{5 }N=NC_6H_5

Discussion

621.	Explain the non-linear shape of H2S and non-planar shape of PCl3 using valence shell electron pair repulsion theory.
Answer» Explain the non-linear shape of $H_{2} S$ and non-planar shape of $P C l_{3}$ using valence shell electron pair repulsion theory.

Discussion

622.	What are the reasons for the gradual change in colur of X2 molecules of group 17 elements from top to bottom?
Answer» What are the reasons for the gradual change in colur of X2 molecules of group 17 elements from top to bottom?

Discussion

623.	Reaction of ethanol with conc. Sulphuric acid at 170∘C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :
Answer» Reaction of ethanol with conc. Sulphuric acid at 170 $^{\circ}$ C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :

Discussion

624.	The sparingly soluble salt SrF2 has a Ksp value of 2.45×10–9 at room temperature. Calculate its solubility in 0.1 M highly soluble NaF aqueous solution.
Answer» The sparingly soluble salt $S r F_{2}$ has a $K_{s p}$ value of $2.45 \times 10^{- 9}$ at room temperature. Calculate its solubility in $0.1 M$ highly soluble $N a F$ aqueous solution.

Discussion

625.	The solubility product constant of Ag2CrO4 and AgBr are 1.1×10−12 and 5.0×10−13 respectively. Calculate the ratio of the molarities of their saturated solutions.
Answer» The solubility product constant of $A g_{2} C r O_{4}$ and AgBr are $1.1 \times 10^{- 12}$ and $5.0 \times 10^{- 13}$ respectively. Calculate the ratio of the molarities of their saturated solutions.

Discussion

626.	How many molecules and atoms of sulphur are present in 0.1 mole of S8 molecules?
Answer» How many molecules and atoms of sulphur are present in 0.1 mole of S8 molecules?

Discussion

627.	What is oxidation number of each element in reaction of Hydrogen sulphate+Sodium Hydroxide gives Sodium Sulphate + Water
Answer» What is oxidation number of each element in reaction of Hydrogen sulphate+Sodium Hydroxide gives Sodium Sulphate + Water

Discussion

628.	Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What should be the pressure above which a solution containing 60% (by moles) toluene boils at 25 ∘C?
Answer» Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What should be the pressure above which a solution containing 60% (by moles) toluene boils at $25^{\circ} C$ ?

Discussion

629.	Hypervalent species among following 1 BF3 2 CO23 SiF44 XeF6Ratio of sigma and pi bond in tetracyanoethylene1 2:12 1:13 1:24 3:4
Answer» Hypervalent species among following 1 BF3 2 CO2 3 SiF4 4 XeF6 Ratio of sigma and pi bond in tetracyanoethylene 1 2:1 2 1:1 3 1:2 4 3:4

Discussion

630.	If aufbau rule in not followed, the 19th electron of Sc(Z=21) will have:
Answer» If aufbau rule in not followed, the $19^{t h}$ electron of Sc(Z=21) will have:

Discussion

631.	In the face-centred cubic lattice structure of gold the closest distance between gold atoms is: ('a' being the edge length of the cubic unit cell)
Answer» In the face-centred cubic lattice structure of gold the closest distance between gold atoms is: ('a' being the edge length of the cubic unit cell)

Discussion

632.	Calculate the mass of urea required to be dissolved in 100 g of water, so as the vapour pressure of the solution decreases by 50%.Given: Molecular mass of urea is 60 g mol−1
Answer» Calculate the mass of urea required to be dissolved in $100 g$ of water, so as the vapour pressure of the solution decreases by $50 %$ . Given: $Molecular mass of urea is 60 g m o l^{- 1}$

Discussion

633.	How many faradey required for oxidation of one mole of h2o
Answer» How many faradey required for oxidation of one mole of h2o

Discussion

634.	The hybridized state of Al+3 8n the complex ion formed when Alcl3 treated with aq. acid is
Answer» The hybridized state of Al+3 8n the complex ion formed when Alcl3 treated with aq. acid is

Discussion

635.	How to find hybridization of a structure
Answer» How to find hybridization of a structure

Discussion

636.	One liter of CO2 react with coke to form a gaseous mixture of 1.4L. Then find the volume of CO2 and CO in the fixed mixture??
Answer» One liter of CO2 react with coke to form a gaseous mixture of 1.4L. Then find the volume of CO2 and CO in the fixed mixture??

Discussion

637.	Q 7/15 If x mole of ideal gas at 27 ^° C expandsisothermally and reversibly from volume of y to 10 ythen the work done isW XR 300 In yУW-300 xR In10yW = -300 x R In10W 100 x R InУ
Answer» Q 7/15 If x mole of ideal gas at 27 ^° C expandsisothermally and reversibly from volume of y to 10 ythen the work done isW XR 300 In yУW-300 xR In10yW = -300 x R In10W 100 x R InУ

Discussion

638.	Why NaoH is formed near the cathode
Answer» Why NaoH is formed near the cathode

Discussion

639.	What is the coordination number of sodium in Na2O
Answer» What is the coordination number of sodium in Na2O

Discussion

640.	The amount of urea to be dissolved in 500 ml of water (K =18.6 K mole-1 in 100g solvent) to produce a depression of 0.186°C in freezing point is
Answer» The amount of urea to be dissolved in 500 ml of water (K =18.6 K mole^-1 in 100g solvent) to produce a depression of 0.186°C in freezing point is

Discussion

641.	Triclorides are covalent in nature then how does they dissolve in water? Triclorides on hydrolysis in water form tetrahedral[M(OH)4]
Answer» Triclorides are covalent in nature then how does they dissolve in water? Triclorides on hydrolysis in water form tetrahedral[M(OH)4]

Discussion

642.	36.time of 75 percent reaction is thrice of time of 50 percent reaction. then the order of the reaction is
Answer» 36.time of 75 percent reaction is thrice of time of 50 percent reaction. then the order of the reaction is

Discussion

643.	How would you convert the following compounds into benzene? (i) Ethyne (ii) Ethene (iii) Hexane
Answer» How would you convert the following compounds into benzene? (i) Ethyne (ii) Ethene (iii) Hexane

643.

How would you convert the following compounds into benzene? (i) Ethyne (ii) Ethene (iii) Hexane

Answer»

How would you convert the following compounds into benzene?
(i) Ethyne

(ii) Ethene

(iii) Hexane

Discussion

644.	Predict the correct order of reducing nature of group 15 hydrides.
Answer» Predict the correct order of reducing nature of group $15$ hydrides.

Discussion

645.	4.Which have highest lattice entalpy BeO or MgO
Answer» 4.Which have highest lattice entalpy BeO or MgO

Discussion

646.	50 mL of a solution containing 10−3 moles of Ag+ is mixed with 50 mL of a 0.1 M HCl solution. How much Ag+ remains in solution? (Ksp of AgCl=1.0×10−10)
Answer» $50 mL$ of a solution containing $10^{- 3}$ moles of $A g^{+}$ is mixed with $50 mL$ of a $0.1 M H C l$ solution. How much $A g^{+}$ remains in solution? $(K_{s p} o f A g C l = 1.0 \times 10^{- 10})$

Discussion

647.	The compound S is
Answer» The compound S is

Discussion

648.	Calculate the angular momentum of an electron present in the third excited state of H atom
Answer» Calculate the angular momentum of an electron present in the third excited state of H atom

Discussion

649.	Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. (i) COCl2(g)↔CO(g)+Cl2(g) (ii) CH4(g)+2S2(g)↔CS2(g)+2H2S(g) (iii) CO2(g)+C(s)↔2CO(g) (iv) 2H2(g)+CO(g)↔CH3OH(g) (v) CaCO3(s)↔CaO(s)+CO2(g) (vi) 4NH3(g)+5O2(g)↔4NO(g)+6H2O(g)
Answer» Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. (i) $C O C l_{2} (g) \leftrightarrow C O (g) + C l_{2} (g)$ (ii) $C H_{4} (g) + 2 S_{2} (g) \leftrightarrow C S_{2} (g) + 2 H_{2} S (g)$ (iii) $C O_{2} (g) + C (s) \leftrightarrow 2 C O (g)$ (iv) $2 H_{2} (g) + C O (g) \leftrightarrow C H_{3} O H (g)$ (v) $C a C O_{3} (s) \leftrightarrow C a O (s) + C O_{2} (g)$ (vi) $4 N H_{3} (g) + 5 O_{2} (g) \leftrightarrow 4 N O (g) + 6 H_{2} O (g)$

649.

Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. (i) COCl2(g)↔CO(g)+Cl2(g) (ii) CH4(g)+2S2(g)↔CS2(g)+2H2S(g) (iii) CO2(g)+C(s)↔2CO(g) (iv) 2H2(g)+CO(g)↔CH3OH(g) (v) CaCO3(s)↔CaO(s)+CO2(g) (vi) 4NH3(g)+5O2(g)↔4NO(g)+6H2O(g)

Answer»

Which of the following reactions will get affected by increasing the pressure?
Also, mention whether change will cause the reaction to go into forward or backward direction.
(i) $C O C l_{2} (g) \leftrightarrow C O (g) + C l_{2} (g)$
(ii) $C H_{4} (g) + 2 S_{2} (g) \leftrightarrow C S_{2} (g) + 2 H_{2} S (g)$
(iii) $C O_{2} (g) + C (s) \leftrightarrow 2 C O (g)$
(iv) $2 H_{2} (g) + C O (g) \leftrightarrow C H_{3} O H (g)$
(v) $C a C O_{3} (s) \leftrightarrow C a O (s) + C O_{2} (g)$
(vi) $4 N H_{3} (g) + 5 O_{2} (g) \leftrightarrow 4 N O (g) + 6 H_{2} O (g)$

Discussion

650.	Why do aldehydes get easily oxidised and ketones dont?
Answer» Why do aldehydes get easily oxidised and ketones dont?

Discussion

Explore topic-wise InterviewSolutions in .

63.An ideal gas expands along the path AB as shown in the p-V diagram.The work done is

The absolute configuration of is

In a reaction 2A + B A2B, the reactant A disappears at:

27.In chemical equilibrium rate constants of backward reaction is 7.5×10_4 and equilibrium conatant is1.5 .So rate constant of forward reaction is

The method of converting high boiling hydrocarbon into low boiling hydrocarbon is known as

Column -IColumn-IIA. 2s(P) n=4,l=2,m=0B. 2pz(Q)n=4,l=2,m=−2 or +2C. 4dx2−y2(R) n=2,l=1,m=0D. 4d2z(S) n=2,l=0,m=0Match the column -I with column -II

63. Molarity of Cl- when equal volumes of 0.5 M AgNO3 solution and 0.5M NaCl solution are mixed?

The pH of mixture of 0.01 M HCl and 0.1 M CH3COOH is approximately equal to?

Arrange the decreasing order of their reactivity with alkanes.

2.An alloy consists of Cu at face centre, Au at body centre, Cr at edge centre Andre at corners.If all atoms touching 1tetrad axis of symmetry are removed , then find the new formula of the unit cell.

Which of the following compounds is aromatic?

The crystal field splitting energy for octahedral (Δ0) and tetrahedral (Δt) complexes are related as :

The van der Waals parameters for gases W, X, Y and Z are:Gasa(atm L2 mol−2)b(L Mol−1)W4.00.027X8.00.030Y6.00.032Z12.00.027Which one of these gases has the lowest critical temperature?

while calculating molality from mole fraction why we neglect the moles of solute in denominator

Find the number of millimoles of KOH in a sample containing 30 KOH formula units.

Major products (A) and (B) respectively, are:

Where should hydrogen be actually placed?

0.22 g of an organic compound on Kjedahl's analysis gave enough NH3 to just neutralize 20cc of 0.1 N H2So4. calculate %of N2 in the compound

4. What is the volume of solution containing 1g mole of sugar that will give rise to an osmotic pressure of 1atm at STP?

In which of the following geometrical isomerism is possible a)CH_3CH=C(CH_3)_{} b)C_6H_{5 }N=NC_6H_5

Explain the non-linear shape of H2S and non-planar shape of PCl3 using valence shell electron pair repulsion theory.

What are the reasons for the gradual change in colur of X2 molecules of group 17 elements from top to bottom?

Reaction of ethanol with conc. Sulphuric acid at 170∘C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :

The sparingly soluble salt SrF2 has a Ksp value of 2.45×10–9 at room temperature. Calculate its solubility in 0.1 M highly soluble NaF aqueous solution.

The solubility product constant of Ag2CrO4 and AgBr are 1.1×10−12 and 5.0×10−13 respectively. Calculate the ratio of the molarities of their saturated solutions.

How many molecules and atoms of sulphur are present in 0.1 mole of S8 molecules?

What is oxidation number of each element in reaction of Hydrogen sulphate+Sodium Hydroxide gives Sodium Sulphate + Water

Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What should be the pressure above which a solution containing 60% (by moles) toluene boils at 25 ∘C?

Hypervalent species among following 1 BF3 2 CO23 SiF44 XeF6Ratio of sigma and pi bond in tetracyanoethylene1 2:12 1:13 1:24 3:4

If aufbau rule in not followed, the 19th electron of Sc(Z=21) will have:

In the face-centred cubic lattice structure of gold the closest distance between gold atoms is: ('a' being the edge length of the cubic unit cell)

Calculate the mass of urea required to be dissolved in 100 g of water, so as the vapour pressure of the solution decreases by 50%.Given: Molecular mass of urea is 60 g mol−1

How many faradey required for oxidation of one mole of h2o

The hybridized state of Al+3 8n the complex ion formed when Alcl3 treated with aq. acid is

How to find hybridization of a structure

One liter of CO2 react with coke to form a gaseous mixture of 1.4L. Then find the volume of CO2 and CO in the fixed mixture??

Q 7/15 If x mole of ideal gas at 27 ^° C expandsisothermally and reversibly from volume of y to 10 ythen the work done isW XR 300 In yУW-300 xR In10yW = -300 x R In10W 100 x R InУ

Why NaoH is formed near the cathode

What is the coordination number of sodium in Na2O

The amount of urea to be dissolved in 500 ml of water (K =18.6 K mole-1 in 100g solvent) to produce a depression of 0.186°C in freezing point is

Triclorides are covalent in nature then how does they dissolve in water? Triclorides on hydrolysis in water form tetrahedral[M(OH)4]

36.time of 75 percent reaction is thrice of time of 50 percent reaction. then the order of the reaction is

How would you convert the following compounds into benzene? (i) Ethyne (ii) Ethene (iii) Hexane

Predict the correct order of reducing nature of group 15 hydrides.

4.Which have highest lattice entalpy BeO or MgO

50 mL of a solution containing 10−3 moles of Ag+ is mixed with 50 mL of a 0.1 M HCl solution. How much Ag+ remains in solution? (Ksp of AgCl=1.0×10−10)

The compound S is

Calculate the angular momentum of an electron present in the third excited state of H atom

Why do aldehydes get easily oxidised and ketones dont?