2600 + Interview Questions in Chemistry Page 13 InterviewSolution

601.	Morphine is
Answer» Morphine is

Discussion

602.	A mixture has 18 g water and 414 g ethanol. The mole fraction of water in mixture is (assume ideal behaviour of the mixture)
Answer» A mixture has 18 g water and 414 g ethanol. The mole fraction of water in mixture is (assume ideal behaviour of the mixture)

Discussion

603.	CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOHThe above set of reactions is named as
Answer» $C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$ The above set of reactions is named as

603.

CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOHThe above set of reactions is named as

Answer»

$C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$

The above set of reactions is named as

Discussion

604.	A given sample of pure compound contains 9.81 g of Zn, 1.8×1023 atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?
Answer» A given sample of pure compound contains $9.81 g$ of $Z n$ , $1.8 \times 10^{23}$ atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?

Discussion

605.	1 mole of each of X1, X2 and X3, with van der Waals’ constant ‘a’ (in (atm L2mol(−2)) 1.0, 3.8 and 2.1, respectively are kept separately in three different vessels of equal volume at the same temperature. Their pressures are observed to be P1, P2, and P3 respectively. On the basis of this data alone, select the correct option (neglect the effect of ‘b’):
Answer» 1 mole of each of $X_{1}, X_{2}$ and $X_{3}$ , with van der Waals’ constant ‘ $a$ ’ (in $({atm L}^{2} {mol}^{(- 2)})$ 1.0, 3.8 and 2.1, respectively are kept separately in three different vessels of equal volume at the same temperature. Their pressures are observed to be $P_{1}, P_{2}$ , and $P_{3}$ respectively. On the basis of this data alone, select the correct option (neglect the effect of ‘ $b$ ’):

Discussion

606.	Oxiran is
Answer» Oxiran is

Discussion

607.	The four quantum number of the outermost electron of K (At. No. = 19) are:
Answer» The four quantum number of the outermost electron of K (At. No. = 19) are:

Discussion

608.	Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and concentrated hydrochloric acid is called
Answer» Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and concentrated hydrochloric acid is called

Discussion

609.	Alkyl halides react with dialkyl copper reagents to give:
Answer» Alkyl halides react with dialkyl copper reagents to give:

Discussion

610.	Energy levels, A, B, C, of a certain atom correspond to increasing values of energy i.e., EA<EB<EC If λ1,λ2,λ3 are the wave lengths of radiations corresponding to the transition from C to B, B to A and C to A respectively, which of the following statements is correct ?
Answer» Energy levels, A, B, C, of a certain atom correspond to increasing values of energy i.e., $E_{A} < E_{B} < E_{C}$ If $λ_{1}, λ_{2}, λ_{3}$ are the wave lengths of radiations corresponding to the transition from C to B, B to A and C to A respectively, which of the following statements is correct ?

Discussion

611.	In H.C.P. arrangement in three dimensions, the overall coordination number of each sphere is
Answer» In H.C.P. arrangement in three dimensions, the overall coordination number of each sphere is

Discussion

612.	On the surface of the earth at 1 atm pressure, a balloon filled with H2 gas occupies 500 mL, the volume being 5/6 of its maximum capacity. The balloon is left in air. It starts rising. The height above which the balloon will burst if temperature of the atmosphere remains constant and the pressure decreases by 1 mm of Hg for every 100 cm rise of height is?
Answer» On the surface of the earth at $1 atm$ pressure, a balloon filled with $H_{2}$ gas occupies $500 mL$ , the volume being $5 / 6$ of its maximum capacity. The balloon is left in air. It starts rising. The height above which the balloon will burst if temperature of the atmosphere remains constant and the pressure decreases by $1 mm$ of Hg for every $100 cm$ rise of height is?

Discussion

613.	Which of the following is not related to the metallurgy of Silver?
Answer» Which of the following is not related to the metallurgy of Silver?

Discussion

614.	C.l + O3 → Cl.O + O2(g) this reaction is the cause for
Answer» $C . l + O_{3} \to C l . O + O_{2} (g)$ this reaction is the cause for

Discussion

615.	Xenon fluorides are very good oxidising and fluorinating agents. They also act as F− donors and acceptors. When XeF4 donates its fluoride to SbF5, then the states of hybridisation of central atom of cationic part and anionic part product are :
Answer» Xenon fluorides are very good oxidising and fluorinating agents. They also act as $F^{-}$ donors and acceptors. When $X e F_{4}$ donates its fluoride to $S b F_{5}$ , then the states of hybridisation of central atom of cationic part and anionic part product are :

Discussion

616.	One mole ideal monoatomic gas is heated according to path AB and AC. If temperature of state B and C are equal. Calculate qACqAB×10
Answer» One mole ideal monoatomic gas is heated according to path AB and AC. If temperature of state B and C are equal. Calculate $\frac{q_{A C}}{q_{A B}} \times 10$

Discussion

617.	In which of the following reactions, the acid formed will give a positive test of silver mirror with Tollen’s reagent?
Answer» In which of the following reactions, the acid formed will give a positive test of silver mirror with Tollen’s reagent?

Discussion

618.	Calculate the work done by 10 g of an ideal gas of molecular weight 44 in expanding reversibly and isothermally from a volume of 5 to 10 litre at 300 K.
Answer» Calculate the work done by $10 g$ of an ideal gas of molecular weight $44$ in expanding reversibly and isothermally from a volume of $5$ to $10$ litre at $300 K$ .

Discussion

619.	The degree of dissociation of acetic acid in a 0.1 M solution is 1.32×10−2, find out its pKa value.Take log10(1.76)=0.25
Answer» The degree of dissociation of acetic acid in a $0.1 M$ solution is $1.32 \times 10^{- 2}$ , find out its $p K_{a}$ value. Take $l o g_{10} (1.76) = 0.25$

Discussion

620.	Which one of the following is a chiral molecule?
Answer» Which one of the following is a chiral molecule?

Discussion

621.	Which of the following is the correct structure for staggered conformation of n-propane?
Answer» Which of the following is the correct structure for staggered conformation of n-propane?

Discussion

622.	Hyperconjugation involves overlap of the following orbitals:
Answer» Hyperconjugation involves overlap of the following orbitals:

Discussion

623.	Consider the following list of reagents:Acidified K2Cr2O7, Alkanline KMnO4, CuSO4, H2O2, Cl2, O3, FeCl3, HNO3, and Na2S2O3Which of the following reagents can oxidise aqueous iodide to iodine
Answer» Consider the following list of reagents: $Acidified K_{2} C r_{2} O_{7}, Alkanline K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}, a n d N a_{2} S_{2} O_{3}$ Which of the following reagents can oxidise aqueous iodide to iodine

Discussion

624.	Which one of the following elements is unable to form MF3–6 ion?
Answer» Which one of the following elements is unable to form $M F_{6}^{3 -}$ ion?

Discussion

625.	Choose the weakest acid among the following:
Answer» Choose the weakest acid among the following:

Discussion

626.	The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by
Answer» The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by

Discussion

627.	Ph−C≡NH3O+−−−−−−−−−−→Partial Hydrolysis(A)Br2+KOH−−−−−→(B)Product (B) is:
Answer» $Ph - C \equiv N H_{3} O^{+} - --------- \to Partial Hydrolysis (A) {Br}_{2} + KOH - ---- \to (B)$ Product (B) is:

Discussion

628.	What mass of glucose is required to produce 88 g of CO2 on complete combustion?
Answer» What mass of glucose is required to produce $88 g$ of $C O_{2}$ on complete combustion?

Discussion

629.	Calculate the volume occupied by 16 gram O2 at 300 K and 8.31 Mpa if PcVRTc=38 and PrVrTr=2.21 ⟮:R=8.314 MpaK−mol⟯
Answer» Calculate the volume occupied by 16 gram $O_{2}$ at 300 K and 8.31 Mpa if $\frac{P_{c} V}{R T_{c}} = \frac{3}{8} a n d \frac{P_{r} V_{r}}{T_{r}} = 2.21 ⟮ : R = 8.314 \frac{M p a}{K - m o l} ⟯$

Discussion

630.	Arrange the following hydrides in their increasing acid strength [CH4, H2S, PH3 and SiH4] -
Answer» Arrange the following hydrides in their increasing acid strength $[C H_{4}, H_{2} S, P H_{3} a n d S i H_{4}]$ -

Discussion

631.	A fixed mass of an ideal gas contained in a 24.63 L sealed rigid vessel at 1 atm is heated from −73∘ C to 27∘ C. Calculate the change in Gibbs energy if the entropy of the gas is a function of temperature given as, S=2+10−2 T (J/K):(Use 1 atm - L = 0.1 kJ)
Answer» A fixed mass of an ideal gas contained in a 24.63 L sealed rigid vessel at 1 atm is heated from $- 73^{\circ} C$ to $27^{\circ} C$ . Calculate the change in Gibbs energy if the entropy of the gas is a function of temperature given as, $S = 2 + 10^{- 2} T (J/K) : (Use 1 atm - L = 0.1 kJ$ )

Discussion

632.	The solubility of hydroxide A(OH)2 in a buffer of pH=11 is found to be 0.0416 g L−1. Molar solubility (in mol L−1) of A(OH)2 in pure water would be:(Given: molecular weight of A(OH)2=104 g mol−1 and (100)13=4.64)
Answer» The solubility of hydroxide $A (O H)_{2}$ in a buffer of $p H = 11$ is found to be $0.0416 {g L}^{- 1}$ . Molar solubility (in ${mol L}^{- 1}$ ) of $A (O H)_{2}$ in pure water would be: $($ Given: molecular weight of $A (O H)_{2} = 104 {g mol}^{- 1}$ and $(100)^{\frac{1}{3}} = 4.64)$

Discussion

633.	Number average molecular mass and weight average molecular mass of synthetic polymers are related as?
Answer» Number average molecular mass and weight average molecular mass of synthetic polymers are related as?

Discussion

634.	Photochemical smog:
Answer» Photochemical smog:

Discussion

635.	The correct order of atomic size of C,N,P,S follows the order
Answer» The correct order of atomic size of $C, N, P, S$ follows the order

Discussion

636.	Cathode rays are deflected by
Answer» Cathode rays are deflected by

Discussion

637.	Identify the rate of reaction of given compounds in E2 reactions
Answer» Identify the rate of reaction of given compounds in $E_{2}$ reactions

Discussion

638.	Phosphine (PH3) decomposes to produce P4(g) and H2(g). What would be the change in volume when 100 mL of PH3(g) is completely decomposed?
Answer» Phosphine $(P H_{3})$ decomposes to produce $P_{4} (g) and H_{2} (g)$ . What would be the change in volume when $100 mL$ of $P H_{3} (g)$ is completely decomposed?

Discussion

639.	Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is 1.28A∘. What is the edge length of a unit cell of copper?
Answer» Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is $1.28 A^{\circ}$ . What is the edge length of a unit cell of copper?

Discussion

640.	Rank the following bonds of CO2−3 in decreasing order of their bond length
Answer» Rank the following bonds of $C O_{3}^{2 -}$ in decreasing order of their bond length

Discussion

641.	The product is:
Answer» The product is:

Discussion

642.	For one mole of a Van der Waals gas when b = 0 and T = 300 K, then pV vs. 1V plot is shown in figure. The value of the Van der Waals constant "a" (atm L2 mol−2)is___.
Answer» For one mole of a Van der Waals gas when b = 0 and T = 300 K, then pV vs. $\frac{1}{V}$ plot is shown in figure. The value of the Van der Waals constant "a" $(a t m L^{2} m o l^{- 2}$ )is___.

642.

For one mole of a Van der Waals gas when b = 0 and T = 300 K, then pV vs. 1V plot is shown in figure. The value of the Van der Waals constant "a" (atm L2 mol−2)is___.

Answer»

For one mole of a Van der Waals gas when b = 0 and T = 300 K, then pV vs. $\frac{1}{V}$ plot is shown in figure. The value of the Van der Waals constant "a" $(a t m L^{2} m o l^{- 2}$ )is___.

Discussion

643.	The concentration of Ag+ ions in a saturated solution of Ag2C2O4 is 2.2×10−4 mol L−1. The Solubility product of Ag2C2O4 is:
Answer» The concentration of $A g^{+}$ ions in a saturated solution of $A g_{2} C_{2} O_{4}$ is $2.2 \times 10^{- 4} m o l L^{- 1}$ . The Solubility product of $A g_{2} C_{2} O_{4}$ is:

Discussion

644.	When condensation product of hexamethylene diammine and adipic acid is heated to 553k (800C) in an atmosphere of nitrogen for about 4-5 hours, the product obtained is
Answer» When condensation product of hexamethylene diammine and adipic acid is heated to 553k (80⁰C) in an atmosphere of nitrogen for about 4-5 hours, the product obtained is

Discussion

645.	A diatomic gas (γ=75) is compressed to 132 times of its initial volume adiabatically and reversibly. If its initial pressure is 2P0, its new pressure will be :
Answer» A diatomic gas $(γ = \frac{7}{5})$ is compressed to $\frac{1}{32}$ times of its initial volume adiabatically and reversibly. If its initial pressure is $2 P_{0}$ , its new pressure will be :

Discussion

646.	4HCl (g) + O2 (g) ⇌ 2H2O (g) + 2Cl2 (g) ΔH° = -114 kJWhat shifts the equilibrium to the left?
Answer» 4HCl (g) + O₂ (g) ⇌ 2H₂O (g) + 2Cl₂ (g) ΔH° = -114 kJ What shifts the equilibrium to the left?

646.

4HCl (g) + O2 (g) ⇌ 2H2O (g) + 2Cl2 (g) ΔH° = -114 kJWhat shifts the equilibrium to the left?

Answer»

4HCl (g) + O₂ (g) ⇌ 2H₂O (g) + 2Cl₂ (g) ΔH° = -114 kJ

What shifts the equilibrium to the left?

Discussion

647.	The strongest hydrogen bonding is present in:
Answer» The strongest hydrogen bonding is present in:

Discussion

648.	Calculate the H+ ion concentration of a 0.01 N weak monobasic acid. The value of dissociation constant is 4.0×10−10.
Answer» Calculate the $H^{+}$ ion concentration of a 0.01 N weak monobasic acid. The value of dissociation constant is $4.0 \times 10^{- 10}$ .

Discussion

649.	During the adsorption of reactant molecules on a catalyst surface:
Answer» During the adsorption of reactant molecules on a catalyst surface:

Discussion

650.	The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? [NEET 2017]
Answer» The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? [NEET 2017]

Discussion

Explore topic-wise InterviewSolutions in .

Morphine is

A mixture has 18 g water and 414 g ethanol. The mole fraction of water in mixture is (assume ideal behaviour of the mixture)

CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOHThe above set of reactions is named as

A given sample of pure compound contains 9.81 g of Zn, 1.8×1023 atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?

Oxiran is

The four quantum number of the outermost electron of K (At. No. = 19) are:

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and concentrated hydrochloric acid is called

Alkyl halides react with dialkyl copper reagents to give:

Energy levels, A, B, C, of a certain atom correspond to increasing values of energy i.e., EA&lt;EB&lt;EC If λ1,λ2,λ3 are the wave lengths of radiations corresponding to the transition from C to B, B to A and C to A respectively, which of the following statements is correct ?

In H.C.P. arrangement in three dimensions, the overall coordination number of each sphere is

Which of the following is not related to the metallurgy of Silver?

C.l + O3 → Cl.O + O2(g) this reaction is the cause for

Xenon fluorides are very good oxidising and fluorinating agents. They also act as F− donors and acceptors. When XeF4 donates its fluoride to SbF5, then the states of hybridisation of central atom of cationic part and anionic part product are :

One mole ideal monoatomic gas is heated according to path AB and AC. If temperature of state B and C are equal. Calculate qACqAB×10

In which of the following reactions, the acid formed will give a positive test of silver mirror with Tollen’s reagent?

Calculate the work done by 10 g of an ideal gas of molecular weight 44 in expanding reversibly and isothermally from a volume of 5 to 10 litre at 300 K.

The degree of dissociation of acetic acid in a 0.1 M solution is 1.32×10−2, find out its pKa value.Take log10(1.76)=0.25

Which one of the following is a chiral molecule?

Which of the following is the correct structure for staggered conformation of n-propane?

Hyperconjugation involves overlap of the following orbitals:

Consider the following list of reagents:Acidified K2Cr2O7, Alkanline KMnO4, CuSO4, H2O2, Cl2, O3, FeCl3, HNO3, and Na2S2O3Which of the following reagents can oxidise aqueous iodide to iodine

Which one of the following elements is unable to form MF3–6 ion?

Choose the weakest acid among the following:

The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by

Ph−C≡NH3O+−−−−−−−−−−→Partial Hydrolysis(A)Br2+KOH−−−−−→(B)Product (B) is:

What mass of glucose is required to produce 88 g of CO2 on complete combustion?

Calculate the volume occupied by 16 gram O2 at 300 K and 8.31 Mpa if PcVRTc=38 and PrVrTr=2.21 ⟮:R=8.314 MpaK−mol⟯

Arrange the following hydrides in their increasing acid strength [CH4, H2S, PH3 and SiH4] -

A fixed mass of an ideal gas contained in a 24.63 L sealed rigid vessel at 1 atm is heated from −73∘ C to 27∘ C. Calculate the change in Gibbs energy if the entropy of the gas is a function of temperature given as, S=2+10−2 T (J/K):(Use 1 atm - L = 0.1 kJ)

The solubility of hydroxide A(OH)2 in a buffer of pH=11 is found to be 0.0416 g L−1. Molar solubility (in mol L−1) of A(OH)2 in pure water would be:(Given: molecular weight of A(OH)2=104 g mol−1 and (100)13=4.64)

Number average molecular mass and weight average molecular mass of synthetic polymers are related as?

Photochemical smog:

The correct order of atomic size of C,N,P,S follows the order

Cathode rays are deflected by

Identify the rate of reaction of given compounds in E2 reactions

Phosphine (PH3) decomposes to produce P4(g) and H2(g). What would be the change in volume when 100 mL of PH3(g) is completely decomposed?

Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is 1.28A∘. What is the edge length of a unit cell of copper?

Rank the following bonds of CO2−3 in decreasing order of their bond length

The product is:

For one mole of a Van der Waals gas when b = 0 and T = 300 K, then pV vs. 1V plot is shown in figure. The value of the Van der Waals constant "a" (atm L2 mol−2)is___.

The concentration of Ag+ ions in a saturated solution of Ag2C2O4 is 2.2×10−4 mol L−1. The Solubility product of Ag2C2O4 is:

When condensation product of hexamethylene diammine and adipic acid is heated to 553k (800C) in an atmosphere of nitrogen for about 4-5 hours, the product obtained is

A diatomic gas (γ=75) is compressed to 132 times of its initial volume adiabatically and reversibly. If its initial pressure is 2P0, its new pressure will be :

4HCl (g) + O2 (g) ⇌ 2H2O (g) + 2Cl2 (g) ΔH° = -114 kJWhat shifts the equilibrium to the left?

The strongest hydrogen bonding is present in:

Calculate the H+ ion concentration of a 0.01 N weak monobasic acid. The value of dissociation constant is 4.0×10−10.

During the adsorption of reactant molecules on a catalyst surface:

The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? [NEET 2017]

Energy levels, A, B, C, of a certain atom correspond to increasing values of energy i.e., EA<EB<EC If λ1,λ2,λ3 are the wave lengths of radiations corresponding to the transition from C to B, B to A and C to A respectively, which of the following statements is correct ?