46295 + Interview Questions in Chemistry Page 41 InterviewSolution

2001.	Which of the following has a bond angle of 120∘?
Answer» Which of the following has a bond angle of $120^{\circ} ?$

Discussion

2002.	The standard reduction potentials at 298 K for the following half reactions are given against each. Which will be the strongest reducing agent,among the following:Zn2+(aq)+2e−⇌Zn(s) −0.762Cr3+(aq)+3e⇌Cr(s) −0.7402H+(aq)+2e−⇌H2(g) 0.00Fe3− (aq)+e−⇌ Fe2+ (ag) 0.770
Answer» The standard reduction potentials at $298 K$ for the following half reactions are given against each. Which will be the strongest reducing agent,among the following: $Z n^{2 +} (a q) + 2 e^{-} ⇌ Z n (s) - 0.762 C r^{3 +} (a q) + 3 e ⇌ C r (s) - 0.740 2 H^{+} (a q) + 2 e^{-} ⇌ H_{2} (g) 0.00 F e^{3 -} (a q) + e^{-} ⇌ F e^{2 +} (a g) 0.770$

Discussion

2003.	In the button cell widely used in watches and other devices the following reaction takes place : Zn(s)+Ag2O(s)+H2O(l)→Zn2+(aq)+2Ag(s)+2OH−(aq)DetermineΔrG∘andE∘forthereaction.[Given,E∘ZnZn2+=−0.76V and E∘Ag+Ag+0.34V]
Answer» In the button cell widely used in watches and other devices the following reaction takes place : $Z n (s) + A g_{2} O (s) + H_{2} O (l) \to Z n^{2 +} (a q) + 2 A g (s) + 2 O H^{-} (a q) D e t e r m i n e Δ_{r} G^{\circ} a n d E^{\circ} f o r t h e r e a c t i o n . [G i v e n, E_{\frac{Z n}{Z n^{2 +}}}^{\circ} = - 0.76 V a n d E_{\frac{A g^{+}}{A g}}^{\circ} + 0.34 V]$

2003.

In the button cell widely used in watches and other devices the following reaction takes place : Zn(s)+Ag2O(s)+H2O(l)→Zn2+(aq)+2Ag(s)+2OH−(aq)DetermineΔrG∘andE∘forthereaction.[Given,E∘ZnZn2+=−0.76V and E∘Ag+Ag+0.34V]

Answer»

In the button cell widely used in watches and other devices the following reaction takes place :

$Z n (s) + A g_{2} O (s) + H_{2} O (l) \to Z n^{2 +} (a q) + 2 A g (s) + 2 O H^{-} (a q) D e t e r m i n e Δ_{r} G^{\circ} a n d E^{\circ} f o r t h e r e a c t i o n . [G i v e n, E_{\frac{Z n}{Z n^{2 +}}}^{\circ} = - 0.76 V a n d E_{\frac{A g^{+}}{A g}}^{\circ} + 0.34 V]$

Discussion

2004.	51. I2 + KI → KI3 In the above reaction 1) only oxidation takes place 2) only reduction takes place 3) both the above 4) none of the above
Answer» 51. I2 + KI → KI3 In the above reaction 1) only oxidation takes place 2) only reduction takes place 3) both the above 4) none of the above

Discussion

2005.	Ratio of number of hybrid and pure orbitals in toluene
Answer» Ratio of number of hybrid and pure orbitals in toluene

Discussion

2006.	A cubic solid has two elements A and B. Atoms A occupy the corners and atoms B occupy the alternate edge centres of the unit cell. The formula of the compound is
Answer» A cubic solid has two elements A and B. Atoms A occupy the corners and atoms B occupy the alternate edge centres of the unit cell. The formula of the compound is

Discussion

2007.	If the lattice parameter of Si is 5.43 oA and the mass of a Si atom is 28.08×1.66×10−27 kg, the density of silicon in kg m−3 is:[Given: Silicon has a diamond cubic structure.]
Answer» If the lattice parameter of $S i$ is $5.43 o A$ and the mass of a $S i$ atom is $28.08 \times 1.66 \times 10^{- 27} k g,$ the density of silicon in $k g m^{- 3}$ is: [Given: Silicon has a diamond cubic structure.]

Discussion

2008.	Which ion gives coloured solution?
Answer» Which ion gives coloured solution?

Discussion

2009.	Which of the following potential energy (PE) diagram represents the SN1 reaction?
Answer» Which of the following potential energy (PE) diagram represents the $S_{N} 1$ reaction?

Discussion

2010.	Compound (A)(i)O3−−−−−−−→(ii)H2O+Zn product(alkene)Ozonolysis of 1 mole compound A gives products of 2 moles CH3CHO, 2 moles CHO−CHO, 1 mole OHC−CH2−CHO and 1 mole OHC−O\|\|C−CH2−O\|\|C−CHOIf a = number of sigma bonds in compound A b = number of pi bonds in compound AFind the value of a(b+2)?
Answer» Compound $(A) (i) O_{3} - ------ \to (i i) H_{2} O + Z n$ product (alkene) Ozonolysis of 1 mole compound A gives products of 2 moles $C H_{3} C H O,$ 2 moles $C H O - C H O,$ 1 mole $O H C - C H_{2} - C H O$ and 1 mole $O H C - O \| \| C - C H_{2} - O \| \| C - C H O$ If a = number of sigma bonds in compound A b = number of pi bonds in compound A Find the value of $\frac{a}{(b + 2)}$ ?

Discussion

2011.	21. Halflife for radioactive C14 is 5760yrs. On how many yrs 20mg of C14 will be reduced to 25 mg
Answer» 21. Halflife for radioactive C14 is 5760yrs. On how many yrs 20mg of C14 will be reduced to 25 mg

Discussion

2012.	Vinegar is a dilute aqueous solution of:
Answer» Vinegar is a dilute aqueous solution of:

Discussion

2013.	Question 49 Match the laws given in Column I with expressions given in Column II. Column I Column IIA. Raoult′s law1. ΔTf=KfmB. Henry′s law2. π=CRTC. Elevation of boiling point3. p=x1p01+x2p02D. Depression in freezing point4. ΔTb=KbmE. Osmotic pressure5. p=KH.x
Answer» Question 49 Match the laws given in Column I with expressions given in Column II. $\begin{matrix} C o l u m n I & C o l u m n I I A . R a o u l t^{'} s l a w & 1. Δ T_{f} = K_{f} m B . H e n r y^{'} s l a w & 2. π = C R T C . E l e v a t i o n o f b o i l i n g p o i n t & 3. p = x_{1} p_{1}^{0} + x_{2} p_{2}^{0} D . D e p r e s s i o n i n f r e e z i n g p o i n t & 4. Δ T_{b} = K_{b} m E . O s m o t i c p r e s s u r e & 5. p = K_{H} . x \end{matrix}$

Discussion

2014.	vnadium electrode is oxidised electrically. If themass of electrode decreases by 100 mg duringthe passage of 570 coulomb, the oxidation state ofvanadium in the product is (At. wt. of V 51)
Answer» vnadium electrode is oxidised electrically. If themass of electrode decreases by 100 mg duringthe passage of 570 coulomb, the oxidation state ofvanadium in the product is (At. wt. of V 51)

Discussion

2015.	Phenol and benzoic acid can be separated by:
Answer» Phenol and benzoic acid can be separated by:

Discussion

2016.	Calculate the mass of H2O and C2H5OH required to make 640 gm mixture having XH2O and XC2H5OH equal to 0.5
Answer» Calculate the mass of $H_{2} O$ and $C_{2} H_{5} O H$ required to make 640 gm mixture having $X_{H_{2} O}$ and $X_{C_{2} H_{5} O H}$ equal to 0.5

Discussion

2017.	Drawstructures of the following derivatives.(i) The2,4-dinitrophenylhydrazone of benzaldehyde(ii) Cyclopropanoneoxime(iii) Acetaldehydedimethylacetal(iv) Thesemicarbazone of cyclobutanone(v) Theethylene ketal of hexan-3-one(vi) Themethyl hemiacetal of formaldehyde
Answer» Draw structures of the following derivatives. (i) The 2,4-dinitrophenylhydrazone of benzaldehyde (ii) Cyclopropanone oxime (iii) Acetaldehydedimethylacetal (iv) The semicarbazone of cyclobutanone (v) The ethylene ketal of hexan-3-one (vi) The methyl hemiacetal of formaldehyde

2017.

Drawstructures of the following derivatives.(i) The2,4-dinitrophenylhydrazone of benzaldehyde(ii) Cyclopropanoneoxime(iii) Acetaldehydedimethylacetal(iv) Thesemicarbazone of cyclobutanone(v) Theethylene ketal of hexan-3-one(vi) Themethyl hemiacetal of formaldehyde

Answer»

Draw
structures of the following derivatives.

(i)
The
2,4-dinitrophenylhydrazone of benzaldehyde

(ii)
Cyclopropanone
oxime

(iii)
Acetaldehydedimethylacetal

(iv)
The
semicarbazone of cyclobutanone

(v)
The
ethylene ketal of hexan-3-one

(vi)
The
methyl hemiacetal of formaldehyde

Discussion

2018.	Ejection of a photoelectron from a metal in the photoelectric effect experiment can be stopped by applying 0.5 V when a radiation of 250 nm is used. The work function of the metal is :
Answer» Ejection of a photoelectron from a metal in the photoelectric effect experiment can be stopped by applying $0.5 V$ when a radiation of $250 n m$ is used. The work function of the metal is :

Discussion

2019.	Question 13 (e)The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___
Answer» Question 13 (e) The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___

Discussion

2020.	the ratio of diameters of molecules of the two gases is 3:5 is and there mean free path of the molecules is the ratio of 5:3 then the ratio of number density of the two gases is
Answer» the ratio of diameters of molecules of the two gases is 3:5 is and there mean free path of the molecules is the ratio of 5:3 then the ratio of number density of the two gases is

Discussion

2021.	Arrange the following compounds in the increasing order of their nucleophilic addition.
Answer» Arrange the following compounds in the increasing order of their nucleophilic addition.

Discussion

2022.	Under the same reaction condition, initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics respectively. Ratio (k1/ko) of the rate constant for first order (k1) and zero order (k0) of the reaction is:
Answer» Under the same reaction condition, initial concentration of $1.386 {mol dm}^{- 3}$ of a substance becomes half in $40$ seconds and $20$ seconds through first order and zero order kinetics respectively. Ratio $(k_{1} / k_{o})$ of the rate constant for first order $(k_{1})$ and zero order $(k_{0})$ of the reaction is:

Discussion

2023.	Given:N2(g)+3H2(g)⇌2NH3(g);K1N2(g)+O2(g)⇌2NO(g);K2H2(g)+12O2(g)⇌H2O(g);K3The equilibrium constant for 2NH3(g)+52O2(g)⇌2NO(g)+3H2O(g)will be:
Answer» Given: $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g); K_{1}$ $N_{2} (g) + O_{2} (g) ⇌ 2 N O (g); K_{2}$ $H_{2} (g) + \frac{1}{2} O_{2} (g) ⇌ H_{2} O (g); K_{3}$ The equilibrium constant for $2 N H_{3} (g) + \frac{5}{2} O_{2} (g) ⇌ 2 N O (g) + 3 H_{2} O (g)$ will be:

Discussion

2024.	5. A mixture of 2.3g formic acid and 4.5g oxalic acid is treated with conc H2SO4 . The evolved gaseous mixture is passed through KOH pellets weight of the remaining product at STP will be
Answer» 5. A mixture of 2.3g formic acid and 4.5g oxalic acid is treated with conc H2SO4 . The evolved gaseous mixture is passed through KOH pellets weight of the remaining product at STP will be

Discussion

2025.	An alloy of gold and silver contains 38.5% silverby mass and has a density of 14.6 g.mL –1 . Whatis the molar concentration of silver in this alloy?
Answer» An alloy of gold and silver contains 38.5% silver by mass and has a density of 14.6 g.mL –1 . What is the molar concentration of silver in this alloy?

Discussion

2026.	39.A carnot engine working as a refrigerator between 250K and 300K and 500 calorie of heat from the cold reservoir. Heat rejected by it to the hot reservoir is
Answer» 39.A carnot engine working as a refrigerator between 250K and 300K and 500 calorie of heat from the cold reservoir. Heat rejected by it to the hot reservoir is

Discussion

2027.	If specific rotation of L-glucose is −53∘ and L-galactose is −82∘ and that of lactose is 54∘. What is specific rotation of solution formed when lactose is completely hydrolyzed?
Answer» If specific rotation of L-glucose is $- 53^{\circ}$ and L-galactose is $- 82^{\circ}$ and that of lactose is $54^{\circ}$ . What is specific rotation of solution formed when lactose is completely hydrolyzed?

Discussion

2028.	21. Glucose —> P (Reaction occurs in presence of HCN) P—> Q (Hydrolysis occurs) Q—> A (Reaction occurs in presence of HI, heat) A is: 1. Heptanoic acid 2. 2-iodohexane 3. Heptane 4. Heptanol
Answer» 21. Glucose —> P (Reaction occurs in presence of HCN) P—> Q (Hydrolysis occurs) Q—> A (Reaction occurs in presence of HI, heat) A is: 1. Heptanoic acid 2. 2-iodohexane 3. Heptane 4. Heptanol

Discussion

2029.	how can co2 have a henry law constant when it does not follow henrey's law
Answer» how can co2 have a henry law constant when it does not follow henrey's law

Discussion

2030.	Why do metal ion having higher reduction potential reduces first??
Answer» Why do metal ion having higher reduction potential reduces first??

Discussion

2031.	Which one is the most reactive towards an electrophilic reagent?
Answer» Which one is the most reactive towards an electrophilic reagent?

Discussion

2032.	CH2=CHCH2CH=CH2NBS−−−→ A, A is:
Answer» $C H_{2} = C H C H_{2} C H = C H_{2} N B S - -- \to$ A, A is:

Discussion

2033.	0.20 g of a diacidic base require 25ml of HCl for exact neutralisation.What is the molecular mass of the base.
Answer» 0.20 g of a diacidic base require 25ml of HCl for exact neutralisation.What is the molecular mass of the base.

Discussion

2034.	Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Answer» Environment friendly refrigerant $R 134 a$ is used in the new generation domestic refrigerators. Its chemical formula is

Discussion

2035.	Total number of monodentate ligands attached to the central metal ion through coordinate bonds is called the
Answer» Total number of monodentate ligands attached to the central metal ion through coordinate bonds is called the

Discussion

2036.	A 10 liters mixture of ethane and propane on complete combustion gives 24 lit of co2 at cons†an t temprature and pressure cal the ratio of ethne to propane in the original mixture and volume of o2 required for complete combustion
Answer» A 10 liters mixture of ethane and propane on complete combustion gives 24 lit of co2 at cons†an t temprature and pressure cal the ratio of ethne to propane in the original mixture and volume of o2 required for complete combustion

Discussion

2037.	what is thomshan model and bohar model?
Answer» what is thomshan model and bohar model?

Discussion

2038.	If C - C bond in C2H6 undergoes heterolytic fission, the hybridization of carbon atoms is
Answer» If C - C bond in $C_{2} H_{6}$ undergoes heterolytic fission, the hybridization of carbon atoms is

Discussion

2039.	The standard Gibbs free energy change for the reaction: 2NOBr(g)⇌2NO(g)+Br2(g) is +12.50 kJ/mole at 27∘C. What is the equilibrium constant for the reaction at 27∘C?
Answer» The standard Gibbs free energy change for the reaction: $2 N O B r (g) ⇌ 2 N O (g) + B r_{2} (g)$ is $+ 12.50 kJ/mole$ at $27^{\circ} C$ . What is the equilibrium constant for the reaction at $27^{\circ} C$ ?

Discussion

2040.	What is the reaction mechanism of benzene diazonium salt with ethyl alcohol?
Answer» What is the reaction mechanism of benzene diazonium salt with ethyl alcohol?

Discussion

2041.	Which of the following configurations represents an atom of the group having the highest second ionization energy?
Answer» Which of the following configurations represents an atom of the group having the highest second ionization energy?

Discussion

2042.	Which of the following hydrogen bond is strongest?
Answer» Which of the following hydrogen bond is strongest?

Discussion

2043.	The compound A, B and C in the following reaction sequence are (in the order A, B, C): CH3−CH2−OHPBr3−−−→(A)alc. KOH−−−−−−→(B)Br2/CCl4−−−−−−→(C)
Answer» The compound A, B and C in the following reaction sequence are (in the order A, B, C): $C H_{3} - C H_{2} - O H P B r_{3} - -- \to (A) a l c . K O H - ----- \to (B) B r_{2} / C C l_{4} - ----- \to (C)$

Discussion

2044.	The mole fraction of glucose in aqueous solution is 0.2 , then molality will be
Answer» The mole fraction of glucose in aqueous solution is 0.2 , then molality will be

Discussion

2045.	for a first order reaction the time taken to reduce the initial concentration by a factor of 1/4 is 20 minutes .The time required to reduce the initial concentration by a factor of 1/16 is ?
Answer» for a first order reaction the time taken to reduce the initial concentration by a factor of 1/4 is 20 minutes .The time required to reduce the initial concentration by a factor of 1/16 is ?

Discussion

2046.	Lisez le dialogue et répondez aux questions suivantes.Le garçon: Bonjour, mesdames! Voici la carte.Mme Lacroix: Ah! D'abord, je voudrais un verre d'eau minérale.Le garçon: Voilà madame, et qu'est - ce que vous voulez manger?Mme Lacroix: Apportez - moi un sandwich au fromage et une tasse de café noir. Et toi?Mme Dupont: Moi, je veux une tarte aux prunes et du jus d'orange.Le garçon: C'est tout?Mme Dupont: Oui, merci.Après quelques minutesMme Lacroix: L'addition, S'il vous plaît.Le garçon: Voilà madame.(Mme Lacroix paie et donne un pourboire au garçon.)A. Répondez aux questions suivantes. 1. Qui paie au restaurant? 2. Que boit Mme Dupont?B. Dites vrai ou faux.C. Complétez avec un mot du texte.
Answer» Lisez le dialogue et répondez aux questions suivantes. Le garçon: Bonjour, mesdames! Voici la carte. Mme Lacroix: Ah! D'abord, je voudrais un verre d'eau minérale. Le garçon: Voilà madame, et qu'est - ce que vous voulez manger? Mme Lacroix: Apportez - moi un sandwich au fromage et une tasse de café noir. Et toi? Mme Dupont: Moi, je veux une tarte aux prunes et du jus d'orange. Le garçon: C'est tout? Mme Dupont: Oui, merci. Après quelques minutes Mme Lacroix: L'addition, S'il vous plaît. Le garçon: Voilà madame. (Mme Lacroix paie et donne un pourboire au garçon.) A. Répondez aux questions suivantes. 1. Qui paie au restaurant? 2. Que boit Mme Dupont? B. Dites vrai ou faux. C. Complétez avec un mot du texte.

Discussion

2047.	Will primary halide , when reacting with a strong base (which is also a nucleophile) , undergo E2 , or will it normally undergo Sn(2) ?
Answer» Will primary halide , when reacting with a strong base (which is also a nucleophile) , undergo E2 , or will it normally undergo Sn(2) ?

Discussion

2048.	Calculate the value of △G at 700 K for the reaction nX→mB−1Given that value of △H=−113 kJ mol−1. and △S=−145 JK mol−1.
Answer» Calculate the value of $△ G$ at 700 K for the reaction $n X \to m B^{- 1}$ Given that value of $△ H = - 113 k J m o l^{- 1} .$ and $△ S = - 145 J K m o l^{- 1} .$

Discussion

2049.	24. For the assumed reaction: X_2+Y_2--->2XY_2; write the rate equation in terms of rate of disappearance of Y_2.
Answer» 24. For the assumed reaction: X_2+Y_2--->2XY_2; write the rate equation in terms of rate of disappearance of Y_2.

Discussion

2050.	10g of Mno2 on reaction with HCL forms 2.24L of Cl2(g) at NTP,find the percentage impurity of Mno2.
Answer» 10g of Mno2 on reaction with HCL forms 2.24L of Cl2(g) at NTP,find the percentage impurity of Mno2.

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following has a bond angle of 120∘?

The standard reduction potentials at 298 K for the following half reactions are given against each. Which will be the strongest reducing agent,among the following:Zn2+(aq)+2e−⇌Zn(s) −0.762Cr3+(aq)+3e⇌Cr(s) −0.7402H+(aq)+2e−⇌H2(g) 0.00Fe3− (aq)+e−⇌ Fe2+ (ag) 0.770

In the button cell widely used in watches and other devices the following reaction takes place : Zn(s)+Ag2O(s)+H2O(l)→Zn2+(aq)+2Ag(s)+2OH−(aq)DetermineΔrG∘andE∘forthereaction.[Given,E∘ZnZn2+=−0.76V and E∘Ag+Ag+0.34V]

51. I2 + KI → KI3 In the above reaction 1) only oxidation takes place 2) only reduction takes place 3) both the above 4) none of the above

Ratio of number of hybrid and pure orbitals in toluene

A cubic solid has two elements A and B. Atoms A occupy the corners and atoms B occupy the alternate edge centres of the unit cell. The formula of the compound is

If the lattice parameter of Si is 5.43 oA and the mass of a Si atom is 28.08×1.66×10−27 kg, the density of silicon in kg m−3 is:[Given: Silicon has a diamond cubic structure.]

Which ion gives coloured solution?

Which of the following potential energy (PE) diagram represents the SN1 reaction?

21. Halflife for radioactive C14 is 5760yrs. On how many yrs 20mg of C14 will be reduced to 25 mg

Vinegar is a dilute aqueous solution of:

Question 49 Match the laws given in Column I with expressions given in Column II. Column I Column IIA. Raoult′s law1. ΔTf=KfmB. Henry′s law2. π=CRTC. Elevation of boiling point3. p=x1p01+x2p02D. Depression in freezing point4. ΔTb=KbmE. Osmotic pressure5. p=KH.x

vnadium electrode is oxidised electrically. If themass of electrode decreases by 100 mg duringthe passage of 570 coulomb, the oxidation state ofvanadium in the product is (At. wt. of V 51)

Phenol and benzoic acid can be separated by:

Calculate the mass of H2O and C2H5OH required to make 640 gm mixture having XH2O and XC2H5OH equal to 0.5

Drawstructures of the following derivatives.(i) The2,4-dinitrophenylhydrazone of benzaldehyde(ii) Cyclopropanoneoxime(iii) Acetaldehydedimethylacetal(iv) Thesemicarbazone of cyclobutanone(v) Theethylene ketal of hexan-3-one(vi) Themethyl hemiacetal of formaldehyde

Ejection of a photoelectron from a metal in the photoelectric effect experiment can be stopped by applying 0.5 V when a radiation of 250 nm is used. The work function of the metal is :

Question 13 (e)The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___

the ratio of diameters of molecules of the two gases is 3:5 is and there mean free path of the molecules is the ratio of 5:3 then the ratio of number density of the two gases is

Arrange the following compounds in the increasing order of their nucleophilic addition.

Under the same reaction condition, initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics respectively. Ratio (k1/ko) of the rate constant for first order (k1) and zero order (k0) of the reaction is:

Given:N2(g)+3H2(g)⇌2NH3(g);K1N2(g)+O2(g)⇌2NO(g);K2H2(g)+12O2(g)⇌H2O(g);K3The equilibrium constant for 2NH3(g)+52O2(g)⇌2NO(g)+3H2O(g)will be:

5. A mixture of 2.3g formic acid and 4.5g oxalic acid is treated with conc H2SO4 . The evolved gaseous mixture is passed through KOH pellets weight of the remaining product at STP will be

An alloy of gold and silver contains 38.5% silverby mass and has a density of 14.6 g.mL –1 . Whatis the molar concentration of silver in this alloy?

39.A carnot engine working as a refrigerator between 250K and 300K and 500 calorie of heat from the cold reservoir. Heat rejected by it to the hot reservoir is

If specific rotation of L-glucose is −53∘ and L-galactose is −82∘ and that of lactose is 54∘. What is specific rotation of solution formed when lactose is completely hydrolyzed?

21. Glucose —> P (Reaction occurs in presence of HCN) P—> Q (Hydrolysis occurs) Q—> A (Reaction occurs in presence of HI, heat) A is: 1. Heptanoic acid 2. 2-iodohexane 3. Heptane 4. Heptanol

how can co2 have a henry law constant when it does not follow henrey's law

Why do metal ion having higher reduction potential reduces first??

Which one is the most reactive towards an electrophilic reagent?

CH2=CHCH2CH=CH2NBS−−−→ A, A is:

0.20 g of a diacidic base require 25ml of HCl for exact neutralisation.What is the molecular mass of the base.

Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is

Total number of monodentate ligands attached to the central metal ion through coordinate bonds is called the

A 10 liters mixture of ethane and propane on complete combustion gives 24 lit of co2 at cons†an t temprature and pressure cal the ratio of ethne to propane in the original mixture and volume of o2 required for complete combustion

what is thomshan model and bohar model?

If C - C bond in C2H6 undergoes heterolytic fission, the hybridization of carbon atoms is

The standard Gibbs free energy change for the reaction: 2NOBr(g)⇌2NO(g)+Br2(g) is +12.50 kJ/mole at 27∘C. What is the equilibrium constant for the reaction at 27∘C?

What is the reaction mechanism of benzene diazonium salt with ethyl alcohol?

Which of the following configurations represents an atom of the group having the highest second ionization energy?

Which of the following hydrogen bond is strongest?

The compound A, B and C in the following reaction sequence are (in the order A, B, C): CH3−CH2−OHPBr3−−−→(A)alc. KOH−−−−−−→(B)Br2/CCl4−−−−−−→(C)

The mole fraction of glucose in aqueous solution is 0.2 , then molality will be

for a first order reaction the time taken to reduce the initial concentration by a factor of 1/4 is 20 minutes .The time required to reduce the initial concentration by a factor of 1/16 is ?

Will primary halide , when reacting with a strong base (which is also a nucleophile) , undergo E2 , or will it normally undergo Sn(2) ?

Calculate the value of △G at 700 K for the reaction nX→mB−1Given that value of △H=−113 kJ mol−1. and △S=−145 JK mol−1.

24. For the assumed reaction: X_2+Y_2--->2XY_2; write the rate equation in terms of rate of disappearance of Y_2.

10g of Mno2 on reaction with HCL forms 2.24L of Cl2(g) at NTP,find the percentage impurity of Mno2.