46295 + Interview Questions in Chemistry Page 55 InterviewSolution

2701.	9. A beam of light composed of red and green ray is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face , the red and green ray emerge from 1) two points propagating in two different non parallel direction 2) two points propagating in two parallel direction 3) one point propagating in two different directions 4) one point propagating in the same directions
Answer» 9. A beam of light composed of red and green ray is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face , the red and green ray emerge from 1) two points propagating in two different non parallel direction 2) two points propagating in two parallel direction 3) one point propagating in two different directions 4) one point propagating in the same directions

Discussion

2702.	The standard oxidation potential from Ni\|Ni+ is 0.2634V. If this is combined with Hydrogen electrode in acid solution, at what pH of solution will the measured EMF =0. Given [Ni+ ] = 0.1M
Answer» The standard oxidation potential from Ni\|Ni+ is 0.2634V. If this is combined with Hydrogen electrode in acid solution, at what pH of solution will the measured EMF =0. Given [Ni+ ] = 0.1M

Discussion

2703.	Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)]and how many of these will exhibit optical isomers?
Answer» Write all the geometrical isomers of [Pt(NH₃)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?

Discussion

2704.	One mole of ideal gas at 300K is expanded isothermally from an initial volume of 1L to 10L the △ E for this process is
Answer» One mole of ideal gas at 300K is expanded isothermally from an initial volume of 1L to 10L the △ E for this process is

Discussion

2705.	Which chloride is the most reactive towards aq NaOH inA) Methyl chlorideB) Isopropyl chlorideC) Vinyl chlorideD) Benzyl chloride
Answer» Which chloride is the most reactive towards aq NaOH in A) Methyl chloride B) Isopropyl chloride C) Vinyl chloride D) Benzyl chloride

Discussion

2706.	Morphine is a/an
Answer» Morphine is a/an

Discussion

2707.	How many moles of oxygen gas will be evolved when 24.5 g of KClO3 is heated for complete decomposition? (molar mass of KClO3 is 122.5g)
Answer» How many moles of oxygen gas will be evolved when 24.5 g of KClO3 is heated for complete decomposition? (molar mass of KClO3 is 122.5g)

Discussion

2708.	Zn and S are heated to form zinc sulphide. If 12 g of Zn is heated with 7.5 g of S, the amount of product formed is (molar mass of Zn = 65, S = 32):
Answer» Zn and S are heated to form zinc sulphide. If 12 g of Zn is heated with 7.5 g of S, the amount of product formed is (molar mass of Zn = 65, S = 32):

Discussion

2709.	Product of the reaction is:
Answer» Product of the reaction is:

Discussion

2710.	2CaSO4(s)⇌2CaO(s)+2SO2(g)+O2(g),ΔH>0 Above equilibrium is established by taking sufficient amount of CaSO4(s) in a closed container at 1600 K. Then, which of the following may be correct options? (Assume that solid CaSO4 is present in the container in each case).
Answer» $2 C a S O_{4} (s) ⇌ 2 C a O (s) + 2 S O_{2} (g) + O 2 (g), Δ H > 0$ Above equilibrium is established by taking sufficient amount of $C a S O_{4} (s)$ in a closed container at 1600 K. Then, which of the following may be correct options? (Assume that solid $C a S O_{4}$ is present in the container in each case).

2710.

2CaSO4(s)⇌2CaO(s)+2SO2(g)+O2(g),ΔH>0 Above equilibrium is established by taking sufficient amount of CaSO4(s) in a closed container at 1600 K. Then, which of the following may be correct options? (Assume that solid CaSO4 is present in the container in each case).

Answer»

$2 C a S O_{4} (s) ⇌ 2 C a O (s) + 2 S O_{2} (g) + O 2 (g), Δ H > 0$

Above equilibrium is established by taking sufficient amount of $C a S O_{4} (s)$ in a closed container at 1600 K. Then, which of the following may be correct options?
(Assume that solid $C a S O_{4}$ is present in the container in each case).

Discussion

2711.	The symbols of zepto and yocto prefixes are in small letters or big letters
Answer» The symbols of zepto and yocto prefixes are in small letters or big letters

Discussion

2712.	On electrolysis of highly concentrated solution of CuSO4 (using platinum electrodes), cathode and anode products respectively are
Answer» On electrolysis of highly concentrated solution of CuSO4 (using platinum electrodes), cathode and anode products respectively are

Discussion

2713.	If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are
Answer» If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with $m$ fraction of octahedral holes occupied by aluminium ions and $n$ fraction of tetrahedral holes occupied by magnesium ions, $m$ and $n$ , respectively, are

Discussion

2714.	Calculate △Go for the following reaction: CO(g)+(12)O2(g)→CO2(g);△Ho=−282.84 kJ/mol Given, SoCO2=213.8 JK−1mol−1, SoCO(g)=197.9 JK−1mol−1,SoO2=205.0 JK−1mol−1
Answer» Calculate $△ G^{o}$ for the following reaction: $C O (g) + (\frac{1}{2}) O_{2} (g) \to C O_{2} (g); △ H^{o} = - 282.84 k J / m o l$ Given, $S_{C O_{2}}^{o} = 213.8 J K^{- 1} m o l^{- 1}, S_{C O (g)}^{o} = 197.9 J K^{- 1} m o l^{- 1}, S_{O_{2}}^{o} = 205.0 J K^{- 1} m o l^{- 1}$

Discussion

2715.	Number of compounds which can give Haloform reaction, is:
Answer» Number of compounds which can give Haloform reaction, is:

Discussion

2716.	Consider the following reaction and match the correct option containing the missed reagents and products:
Answer» Consider the following reaction and match the correct option containing the missed reagents and products:

Discussion

2717.	pH of 0.01 M solution of HA is 4. Find the value of pKa of HA at 25∘C
Answer» pH of 0.01 M solution of HA is 4. Find the value of pKa of HA at $25^{\circ} C$

Discussion

2718.	15. An ideal gas expands against a constant external pressure of 2 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (1) 4052J (3) 14052 J (2) 5948 J(4) 9940 J
Answer» 15. An ideal gas expands against a constant external pressure of 2 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (1) 4052J (3) 14052 J (2) 5948 J(4) 9940 J

Discussion

2719.	Showhow will you synthesize:(i) 1-phenylethanol from a suitable alkene.(ii) cyclohexylmethanol using an alkyl halide by an SN2reaction.(iii) pentan-1-ol using a suitable alkyl halide?
Answer» Show how will you synthesize: (i) 1-phenylethanol from a suitable alkene. (ii) cyclohexylmethanol using an alkyl halide by an S_N2 reaction. (iii) pentan-1-ol using a suitable alkyl halide?

2719.

Showhow will you synthesize:(i) 1-phenylethanol from a suitable alkene.(ii) cyclohexylmethanol using an alkyl halide by an SN2reaction.(iii) pentan-1-ol using a suitable alkyl halide?

Answer»

Show
how will you synthesize:

(i)
1-phenylethanol from a suitable alkene.

(ii)
cyclohexylmethanol using an alkyl halide by an S_N2
reaction.

(iii)
pentan-1-ol using a suitable alkyl halide?

Discussion

2720.	To study the rate of a reaction, it is necessary to
Answer» To study the rate of a reaction, it is necessary to

Discussion

2721.	If the valence shell electronic structure for an element is ns2np5, this element will belong to the group of
Answer» If the valence shell electronic structure for an element is $n s^{2} n p^{5}$ , this element will belong to the group of

Discussion

2722.	Two glass bulbs of equal volumes are connected by a narrow tube and are filled with a gas at 0∘C and a pressure of 76 cm of mercury. One of the bulbs is then placed in melting ice and the other is placed in a water bath maintained at 62∘C. What is the new value of the pressure inside the bulbs ? Consider the volume of the connecting tube is negligible.
Answer» Two glass bulbs of equal volumes are connected by a narrow tube and are filled with a gas at $0^{\circ} C$ and a pressure of $76 cm$ of mercury. One of the bulbs is then placed in melting ice and the other is placed in a water bath maintained at $62^{\circ} C$ . What is the new value of the pressure inside the bulbs ? Consider the volume of the connecting tube is negligible.

Discussion

2723.	One of the by-products formed during the recovery of NH3 from Solvay process is:
Answer» One of the by-products formed during the recovery of $N H_{3}$ from Solvay process is:

Discussion

2724.	75 If ΔG=177K cal. (1)2Fe(s)+3/2 O2(g)> Fe2O3 (s) and ΔG=19K cal. (2)4 Fe2O3 (s)+Fe(s)>3 Fe3O4 (s) What is the formation of Gibs free energy of Fe3O4 1)+229.6Kcal/mol 2)242.3Kcal/mol 3)727Kcal/mol 4)229.6Kcal/mol
Answer» 75 If ΔG=177K cal. (1)2Fe(s)+3/2 O2(g)> Fe2O3 (s) and ΔG=19K cal. (2)4 Fe2O3 (s)+Fe(s)>3 Fe3O4 (s) What is the formation of Gibs free energy of Fe3O4 1)+229.6Kcal/mol 2)242.3Kcal/mol 3)727Kcal/mol 4)229.6Kcal/mol

Discussion

2725.	what is addition of grignard reageant?
Answer» what is addition of grignard reageant?

Discussion

2726.	51. An oxide of metal contains 12.5% O2 by weight. The oxide was converted into chloride by treatment with HCl and electrolysed. Calculate the amount of metal that would be deposited at cathode if a current of 0.965 ampere was passed for a period of 5 hr. What is valency of metal ?
Answer» 51. An oxide of metal contains 12.5% O2 by weight. The oxide was converted into chloride by treatment with HCl and electrolysed. Calculate the amount of metal that would be deposited at cathode if a current of 0.965 ampere was passed for a period of 5 hr. What is valency of metal ?

Discussion

2727.	Which of the following are examples of aldol condensation?
Answer» Which of the following are examples of aldol condensation?

Discussion

2728.	Among the following species, which pairs are not isostructural NF3,NO−3,BF3,H3O+,HN3
Answer» Among the following species, which pairs are not isostructural $N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, H N_{3}$

Discussion

2729.	The correct order of thermal stability of tetrahalides of carbon is:
Answer» The correct order of thermal stability of tetrahalides of carbon is:

Discussion

2730.	One mole of anhydrous salt AB dissolves in water and liberates 15 J/mol of heat. The value of DH^°(hydration) of AB is -20.5 J/mol. Hence the dissolution of hydrated salt AB.3H2O (S) is 1) 5.5 J/mol 2) -5.5 J/mol 3) -35.5 J/mol 4) 35.5 J/mol
Answer» One mole of anhydrous salt AB dissolves in water and liberates 15 J/mol of heat. The value of DH^°(hydration) of AB is -20.5 J/mol. Hence the dissolution of hydrated salt AB.3H2O (S) is 1) 5.5 J/mol 2) -5.5 J/mol 3) -35.5 J/mol 4) 35.5 J/mol

Discussion

2731.	show me E-Z isomerism of 3-Chloro-4-methyl-hex-3-ene
Answer» show me E-Z isomerism of 3-Chloro-4-methyl-hex-3-ene

Discussion

2732.	Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54):(1) What is the length of the unit cell of Cu?(2) What is the volume of the unit cell?(3) How many atoms belong to the unit cell?(4) Find the density of Cu?
Answer» Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54): (1) What is the length of the unit cell of Cu? (2) What is the volume of the unit cell? (3) How many atoms belong to the unit cell? (4) Find the density of Cu?

2732.

Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54):(1) What is the length of the unit cell of Cu?(2) What is the volume of the unit cell?(3) How many atoms belong to the unit cell?(4) Find the density of Cu?

Answer»

Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54):

(1) What is the length of the unit cell of Cu?

(2) What is the volume of the unit cell?

(3) How many atoms belong to the unit cell?

(4) Find the density of Cu?

Discussion

2733.	what is the difference between symmtrical and non symmtrical carbon compounds
Answer» what is the difference between symmtrical and non symmtrical carbon compounds

Discussion

2734.	P=(6t+ 3 )kg m/s.force at t = 2 sec avarage force b/w t=0 & t =2 sec
Answer» P=(6t+ 3 )kg m/s. force at t = 2 sec avarage force b/w t=0 & t =2 sec

Discussion

2735.	In a set of reactions m-bromobenzoic acid gave a product D. identify the product D:
Answer» In a set of reactions m-bromobenzoic acid gave a product $D$ . identify the product $D$ :

2735.

In a set of reactions m-bromobenzoic acid gave a product D. identify the product D:

Answer»

In a set of reactions m-bromobenzoic acid gave a product $D$ . identify the product $D$ :

Discussion

2736.	Find the number of acid(s) which are having hypo prefix in their name from the following: H3PO4, H3PO3, H3PO2, HClO, H4P2O6, H2S2O6 ___
Answer» Find the number of acid(s) which are having hypo prefix in their name from the following: $H_{3} P O_{4}, H_{3} P O_{3}, H_{3} P O_{2}, H C l O, H_{4} P_{2} O_{6}, H_{2} S_{2} O_{6}$ ___

Discussion

2737.	The ratio of velocities of the diffusion of gases A and B is 1:4. If the ratio of their masses present in the mixture is 2:3, calculate the ratio of their mole fractions.
Answer» The ratio of velocities of the diffusion of gases $A$ and $B$ is $1 : 4$ . If the ratio of their masses present in the mixture is $2 : 3$ , calculate the ratio of their mole fractions.

Discussion

2738.	46. The group of substances in which at melting point covalent bond becomes weak:- (1) NaCl, KCl, CaCl2 (2) I2(s), CH4(s), dry ice (3) B4C, diamond,SiC (4) All of the above
Answer» 46. The group of substances in which at melting point covalent bond becomes weak:- (1) NaCl, KCl, CaCl2 (2) I2(s), CH4(s), dry ice (3) B4C, diamond,SiC (4) All of the above

Discussion

2739.	On treatment of 100 ml of 0.1M sol of Cocl3.6H2O with excess AgNO3,1.22*10powe22 ions are precipitated.tTHe complex is?
Answer» On treatment of 100 ml of 0.1M sol of Cocl3.6H2O with excess AgNO3,1.22*10powe22 ions are precipitated.tTHe complex is?

Discussion

2740.	KCl is known as
Answer» KCl is known as

Discussion

2741.	What is the total translational and rotational energy of 1 mole of oxygen at 300 K ? R=8.314 J mol−1 K−1
Answer» What is the total translational and rotational energy of 1 mole of oxygen at $300 K$ ? $R = 8.314 {J mol}^{- 1} K^{- 1}$

Discussion

2742.	Which of the following is an amphoteric hydroxide?
Answer» Which of the following is an amphoteric hydroxide?

Discussion

2743.	The relative rate of effusion of ch4 to so2 through the container containing ch4 and so2 in 3:2mass ratio
Answer» The relative rate of effusion of ch4 to so2 through the container containing ch4 and so2 in 3:2mass ratio

Discussion

2744.	Trans-2-butene+Br2CCl4−−−→
Answer» $Trans-2-butene + B r_{2} C C l_{4} - -- \to$

Discussion

2745.	Describethe preparation of potassium permanganate. How does the acidifiedpermanganate solution react with (i) iron(II) ions (ii) SO2and (iii) oxalic acid?Write the ionic equations for the reactions.
Answer» Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions (ii) SO₂ and (iii) oxalic acid? Write the ionic equations for the reactions.

2745.

Describethe preparation of potassium permanganate. How does the acidifiedpermanganate solution react with (i) iron(II) ions (ii) SO2and (iii) oxalic acid?Write the ionic equations for the reactions.

Answer»

Describe
the preparation of potassium permanganate. How does the acidified
permanganate solution react with (i) iron(II) ions (ii) SO₂
and (iii) oxalic acid?

Write the ionic equations for the reactions.

Discussion

2746.	All Possible isomers of C6H12O
Answer» All Possible isomers of C6H12O

Discussion

2747.	51. How many alkyl group are possible with molecular formula C5H12 3 8 6 7(what is the approach to solve such type of problems)
Answer» 51. How many alkyl group are possible with molecular formula C5H12 3 8 6 7(what is the approach to solve such type of problems)

Discussion

2748.	Assertion: {}_{27}^{60}Co is a source of gamma radiation. Reason : Gamma emission is due to nuclear decay. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c)If assertion is true but reason is false. (d) If both assertion and reason are false.
Answer» Assertion: {}_{27}^{60}Co is a source of gamma radiation. Reason : Gamma emission is due to nuclear decay. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c)If assertion is true but reason is false. (d) If both assertion and reason are false.

Discussion

2749.	slow step of cine substitution reaction
Answer» slow step of cine substitution reaction

Discussion

2750.	For a cyclic process the condition is:
Answer» For a cyclic process the condition is:

Discussion

Explore topic-wise InterviewSolutions in .

The standard oxidation potential from Ni|Ni+ is 0.2634V. If this is combined with Hydrogen electrode in acid solution, at what pH of solution will the measured EMF =0. Given [Ni+ ] = 0.1M

Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)]and how many of these will exhibit optical isomers?

One mole of ideal gas at 300K is expanded isothermally from an initial volume of 1L to 10L the △ E for this process is

Which chloride is the most reactive towards aq NaOH inA) Methyl chlorideB) Isopropyl chlorideC) Vinyl chlorideD) Benzyl chloride

Morphine is a/an

How many moles of oxygen gas will be evolved when 24.5 g of KClO3 is heated for complete decomposition? (molar mass of KClO3 is 122.5g)

Zn and S are heated to form zinc sulphide. If 12 g of Zn is heated with 7.5 g of S, the amount of product formed is (molar mass of Zn = 65, S = 32):

Product of the reaction is:

2CaSO4(s)⇌2CaO(s)+2SO2(g)+O2(g),ΔH&gt;0 Above equilibrium is established by taking sufficient amount of CaSO4(s) in a closed container at 1600 K. Then, which of the following may be correct options? (Assume that solid CaSO4 is present in the container in each case).

The symbols of zepto and yocto prefixes are in small letters or big letters

On electrolysis of highly concentrated solution of CuSO4 (using platinum electrodes), cathode and anode products respectively are

If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are

Calculate △Go for the following reaction: CO(g)+(12)O2(g)→CO2(g);△Ho=−282.84 kJ/mol Given, SoCO2=213.8 JK−1mol−1, SoCO(g)=197.9 JK−1mol−1,SoO2=205.0 JK−1mol−1

Number of compounds which can give Haloform reaction, is:

Consider the following reaction and match the correct option containing the missed reagents and products:

pH of 0.01 M solution of HA is 4. Find the value of pKa of HA at 25∘C

15. An ideal gas expands against a constant external pressure of 2 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (1) 4052J (3) 14052 J (2) 5948 J(4) 9940 J

Showhow will you synthesize:(i) 1-phenylethanol from a suitable alkene.(ii) cyclohexylmethanol using an alkyl halide by an SN2reaction.(iii) pentan-1-ol using a suitable alkyl halide?

To study the rate of a reaction, it is necessary to

If the valence shell electronic structure for an element is ns2np5, this element will belong to the group of

One of the by-products formed during the recovery of NH3 from Solvay process is:

75 If ΔG=177K cal. (1)2Fe(s)+3/2 O2(g)> Fe2O3 (s) and ΔG=19K cal. (2)4 Fe2O3 (s)+Fe(s)>3 Fe3O4 (s) What is the formation of Gibs free energy of Fe3O4 1)+229.6Kcal/mol 2)242.3Kcal/mol 3)727Kcal/mol 4)229.6Kcal/mol

what is addition of grignard reageant?

51. An oxide of metal contains 12.5% O2 by weight. The oxide was converted into chloride by treatment with HCl and electrolysed. Calculate the amount of metal that would be deposited at cathode if a current of 0.965 ampere was passed for a period of 5 hr. What is valency of metal ?

Which of the following are examples of aldol condensation?

Among the following species, which pairs are not isostructural NF3,NO−3,BF3,H3O+,HN3

The correct order of thermal stability of tetrahalides of carbon is:

One mole of anhydrous salt AB dissolves in water and liberates 15 J/mol of heat. The value of DH^°(hydration) of AB is -20.5 J/mol. Hence the dissolution of hydrated salt AB.3H2O (S) is 1) 5.5 J/mol 2) -5.5 J/mol 3) -35.5 J/mol 4) 35.5 J/mol

show me E-Z isomerism of 3-Chloro-4-methyl-hex-3-ene

Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54):(1) What is the length of the unit cell of Cu?(2) What is the volume of the unit cell?(3) How many atoms belong to the unit cell?(4) Find the density of Cu?

what is the difference between symmtrical and non symmtrical carbon compounds

P=(6t+ 3 )kg m/s.force at t = 2 sec avarage force b/w t=0 & t =2 sec

In a set of reactions m-bromobenzoic acid gave a product D. identify the product D:

Find the number of acid(s) which are having hypo prefix in their name from the following: H3PO4, H3PO3, H3PO2, HClO, H4P2O6, H2S2O6 ___

The ratio of velocities of the diffusion of gases A and B is 1:4. If the ratio of their masses present in the mixture is 2:3, calculate the ratio of their mole fractions.

46. The group of substances in which at melting point covalent bond becomes weak:- (1) NaCl, KCl, CaCl2 (2) I2(s), CH4(s), dry ice (3) B4C, diamond,SiC (4) All of the above

On treatment of 100 ml of 0.1M sol of Cocl3.6H2O with excess AgNO3,1.22*10powe22 ions are precipitated.tTHe complex is?

KCl is known as

What is the total translational and rotational energy of 1 mole of oxygen at 300 K ? R=8.314 J mol−1 K−1

Which of the following is an amphoteric hydroxide?

The relative rate of effusion of ch4 to so2 through the container containing ch4 and so2 in 3:2mass ratio

Trans-2-butene+Br2CCl4−−−→

Describethe preparation of potassium permanganate. How does the acidifiedpermanganate solution react with (i) iron(II) ions (ii) SO2and (iii) oxalic acid?Write the ionic equations for the reactions.

All Possible isomers of C6H12O

51. How many alkyl group are possible with molecular formula C5H12 3 8 6 7(what is the approach to solve such type of problems)

slow step of cine substitution reaction

For a cyclic process the condition is:

2CaSO4(s)⇌2CaO(s)+2SO2(g)+O2(g),ΔH>0 Above equilibrium is established by taking sufficient amount of CaSO4(s) in a closed container at 1600 K. Then, which of the following may be correct options? (Assume that solid CaSO4 is present in the container in each case).