46295 + Interview Questions in Chemistry Page 4 InterviewSolution

151.	37.Give the formal charge Nd average bond order of XO bond in the following. (NO2)- (ClO2)- (ClO3)- (ClO4)- (the numbers r the subscript)
Answer» 37.Give the formal charge Nd average bond order of XO bond in the following. (NO2)- (ClO2)- (ClO3)- (ClO4)- (the numbers r the subscript)

Discussion

152.	Which of the following molecules is expected to rotate the plane polarised light?
Answer» Which of the following molecules is expected to rotate the plane polarised light?

Discussion

153.	In which of the following reactions ΔH is equal to ΔU?
Answer» In which of the following reactions $Δ H$ is equal to $Δ U$ ?

Discussion

154.	In which of the following molecules all the bonds are not equal?why?.(4) PF3(1) NF3(2) CIF3(3) BF.
Answer» In which of the following molecules all the bonds are not equal?why?.(4) PF3(1) NF3(2) CIF3(3) BF.

Discussion

155.	The total number of elements of symmetry in a cubic crystal is _____________
Answer» The total number of elements of symmetry in a cubic crystal is _____________

Discussion

156.	A& B are ideal gases. The molecular weights of A& B are in the ratio of 1:4.the pressure of a gas mixture contain ing equal weights of A&B is P atm. What is the partial pressure of B in the mixture? 1 p/5 2 p/2 3 p/2.5 43p/4
Answer» A& B are ideal gases. The molecular weights of A& B are in the ratio of 1:4.the pressure of a gas mixture contain ing equal weights of A&B is P atm. What is the partial pressure of B in the mixture? 1 p/5 2 p/2 3 p/2.5 43p/4

Discussion

157.	An air compressor with compression ratio of 5(rp) is used to compress air having inlet temperature of 300 K. If the temperature of air at exit is 500 K. The change in temperature of air at exit for unit increase in percentage polytropic efficiency is _____ K. (γair=1.4)(Assume constant inlet temperature and pressure ratio).-2.75
Answer» An air compressor with compression ratio of $5 (r_{p})$ is used to compress air having inlet temperature of 300 K. If the temperature of air at exit is 500 K. The change in temperature of air at exit for unit increase in percentage polytropic efficiency is _____ K. $(γ_{a i r} = 1.4)$ (Assume constant inlet temperature and pressure ratio). -2.75

Discussion

158.	Can an infinite set be called as a universal set?
Answer» Can an infinite set be called as a universal set?

Discussion

159.	What are functional groups?
Answer» What are functional groups?

Discussion

160.	what is the meaning of dative bond
Answer» what is the meaning of dative bond

Discussion

161.	1.2Al+3H2So4-A+3H2(g) 2.Element having highest tensle strength
Answer» 1.2Al+3H2So4-A+3H2(g) 2.Element having highest tensle strength

161.

1.2Al+3H2So4-A+3H2(g) 2.Element having highest tensle strength

Answer»

1.2Al+3H2So4-A+3H2(g)

2.Element having highest tensle strength

Discussion

162.	A mixture of chloroxylenol and terpineol acts as
Answer» A mixture of chloroxylenol and terpineol acts as

Discussion

163.	18. How to find the ph of acids and bases
Answer» 18. How to find the ph of acids and bases

Discussion

164.	EDTA4− is ethylenediaminetetraacetate ion. The total number of N−Co−O bond angles in [Co(EDTA)]1− complex ion is
Answer» $E D T A^{4 -}$ is ethylenediaminetetraacetate ion. The total number of $N - C o - O$ bond angles in $[C o (EDTA)]^{1 -}$ complex ion is

Discussion

165.	hydrolysis of phenylisocyanide with acidic hydrolysis yield
Answer» hydrolysis of phenylisocyanide with acidic hydrolysis yield

Discussion

166.	A standard enthalpies of formationof gaseous XeF2,XeF4&XeF5 are-108,-216,&-294kJ mol-1 respectivelyand the bond energy in F2 is 159kJmol -1. calculate the average Xe-F bondenergy in each of this compounds anduse of the value for XeF2 to obtain thevalue for the electronegativity of xenonon the pauling scale assuming theelectronegativity of fluorine to be 4?
Answer» A standard enthalpies of formationof gaseous XeF2,XeF4&XeF5 are-108,-216,&-294kJ mol-1 respectivelyand the bond energy in F2 is 159kJmol -1. calculate the average Xe-F bondenergy in each of this compounds anduse of the value for XeF2 to obtain thevalue for the electronegativity of xenonon the pauling scale assuming theelectronegativity of fluorine to be 4?

Discussion

167.	The standard hydrogen electrode potential is zero because: a) hydrogen oxidized easily b) electrode potential is considered as zero c) hydrogen atom has only one electron d) all of this [Pls explain answer]
Answer» The standard hydrogen electrode potential is zero because: a) hydrogen oxidized easily b) electrode potential is considered as zero c) hydrogen atom has only one electron d) all of this [Pls explain answer]

167.

The standard hydrogen electrode potential is zero because: a) hydrogen oxidized easily b) electrode potential is considered as zero c) hydrogen atom has only one electron d) all of this [Pls explain answer]

Answer»

The standard hydrogen electrode potential is zero because:

a) hydrogen oxidized easily

b) electrode potential is considered as zero

c) hydrogen atom has only one electron

d) all of this

[Pls explain answer]

Discussion

168.	51. If 2nd step is rate determining step in given mecahnism NO+ Br2-> NOBr (1) NOBr+NO->2NOBr (2) Order of reaction w.r.t NO is (1)zero (2)1 (3)1.5 (4)2
Answer» 51. If 2nd step is rate determining step in given mecahnism NO+ Br2-> NOBr (1) NOBr+NO->2NOBr (2) Order of reaction w.r.t NO is (1)zero (2)1 (3)1.5 (4)2

Discussion

169.	78 Why doesn't nitrogen monoxide dimerise even though it is an odd electron molecule?
Answer» 78 Why doesn't nitrogen monoxide dimerise even though it is an odd electron molecule?

Discussion

170.	Substances that are oxidised and reduced in the following reaction are respectively,N2H4(l)+2H2O2(l)⟶N2(g)+4H2O(l)
Answer» Substances that are oxidised and reduced in the following reaction are respectively, $N_{2} H_{4} (l) + 2 H_{2} O_{2} (l) ⟶ N_{2} (g) + 4 H_{2} O (l)$

Discussion

171.	If the molar solubility (in mol L−1) of a sparingly soluble salt AB3 is s. The corresponding solubility product is Ksp. The solubility (s) can be written in terms of Ksp by the relation:
Answer» If the molar solubility $(i n m o l L^{- 1})$ of a sparingly soluble salt $A B_{3}$ is $s$ . The corresponding solubility product is $K_{s p}$ . The solubility $(s)$ can be written in terms of $K_{s p}$ by the relation:

Discussion

172.	baloonA balloon blown up with 1 mole of gas has a volume of 480 mL at 14 C. At this stage,15.(7/8)th of its maximum capacity. Suggest:(A) Will the halloon burst at 30^° C?it willof these(B) The minimum temperature at w(4)None(3) No, 44 C(2) Yes, 55^° C(1) No, 55^° C
Answer» baloonA balloon blown up with 1 mole of gas has a volume of 480 mL at 14 C. At this stage,15.(7/8)th of its maximum capacity. Suggest:(A) Will the halloon burst at 30^° C?it willof these(B) The minimum temperature at w(4)None(3) No, 44 C(2) Yes, 55^° C(1) No, 55^° C

Discussion

173.	From 280 mg CO. 10^21 molecules are removed. How many g and mole of CO are left
Answer» From 280 mg CO. 10^21 molecules are removed. How many g and mole of CO are left

Discussion

174.	22. A compound AB crystallizes in bcc lattice with unit cell edge length of 380 pm . Calculate 1) the distance between oppositely charged ions in the lattice . 2) Calculate radius of cation A+ if radius of anion B- is 175 pm . ( Assume that cation fits exactly in the cubic void ).
Answer» 22. A compound AB crystallizes in bcc lattice with unit cell edge length of 380 pm . Calculate 1) the distance between oppositely charged ions in the lattice . 2) Calculate radius of cation A+ if radius of anion B- is 175 pm . ( Assume that cation fits exactly in the cubic void ).

Discussion

175.	Which mineral has been named incorrectly?
Answer» Which mineral has been named incorrectly?

Discussion

176.	Extraction of aluminium in detail
Answer» Extraction of aluminium in detail

Discussion

177.	the strongest lewis base is i.nh3 ii.nf3 iii.nh2oh iv.n(sih3)
Answer» the strongest lewis base is i.nh3 ii.nf3 iii.nh2oh iv.n(sih3)

Discussion

178.	Air contains 20% O, by volume. How many c.c. of air will be required for oxidation of 100 cc of acetylene(C2H2)?(1) 1064 cc(2) 212.8 cc(3) 500 cc(4) 1250 cc
Answer» Air contains 20% O, by volume. How many c.c. of air will be required for oxidation of 100 cc of acetylene(C2H2)?(1) 1064 cc(2) 212.8 cc(3) 500 cc(4) 1250 cc

Discussion

179.	An element with atomic mass 60 having FCC structure has a density=6.23g/cubic centimetres.What is the edge length of unit cell.
Answer» An element with atomic mass 60 having FCC structure has a density=6.23g/cubic centimetres.What is the edge length of unit cell.

Discussion

180.	The rms velocity of hydroge is \sqrt5 time than that of nitrogen.If T is the temperature of the gas then (1)\underset{Hydrogen}T=\underset{Nitrogen}T (2)\underset{Hydrogen}T>\underset{Nitrogen}T (3)\underset{Hydrgen}T
Answer» The rms velocity of hydroge is \sqrt5 time than that of nitrogen.If T is the temperature of the gas then (1)\underset{Hydrogen}T=\underset{Nitrogen}T (2)\underset{Hydrogen}T>\underset{Nitrogen}T (3)\underset{Hydrgen}T

Discussion

181.	A decimolar solution of potassium ferrocyanide at 300 K is 50% dissociated. Calculate the osmotic pressure of the solution.R=0.082 L atm mol−1 K−1.
Answer» A decimolar solution of potassium ferrocyanide at $300 K$ is $50 %$ dissociated. Calculate the osmotic pressure of the solution. $R = 0.082 L a t m m o l^{- 1} K^{- 1}$ .

Discussion

182.	The decreasing order of basic strengths of the following compounds is:
Answer» The decreasing order of basic strengths of the following compounds is:

Discussion

183.	On additon of KI to the solution gives a yellow precipitate which soluble in boiling water and reappears on cooling as shining crystals. The cation present in the solution is
Answer» On additon of KI to the solution gives a yellow precipitate which soluble in boiling water and reappears on cooling as shining crystals. The cation present in the solution is

Discussion

184.	Due to global warming, ice on polar caps is likely to melt in larger quantity. Due to this effect Options: Moment of inertia of earth shell decrease Length of the day shall decrease Angular velocity of earth shall decrease Angular momentum of earth shall decrease
Answer» Due to global warming, ice on polar caps is likely to melt in larger quantity. Due to this effect Options: Moment of inertia of earth shell decrease Length of the day shall decrease Angular velocity of earth shall decrease Angular momentum of earth shall decrease

Discussion

185.	A car is moving on a circular path and takes a turn. If R1and R2 be the reactions on the inner and outer wheels respectively, then [MH CET (Med.) 2001] (a)R1  R2(b)R1  R2(c)R1  R2(d)R1  R2
Answer» A car is moving on a circular path and takes a turn. If R1 and R2 be the reactions on the inner and outer wheels respectively, then [MH CET (Med.) 2001] (a) R1  R2 (b) R1  R2 (c) R1  R2 (d) R1  R2

Discussion

186.	A charge q is placed innon uniform Electric Field ² = 2t² iwhere t is the time.Find its velocity and displacementas a function of time [Assumemass of particle is in ]
Answer» A charge q is placed in non uniform Electric Field ² = 2t² i where t is the time. Find its velocity and displacement as a function of time [Assume mass of particle is in ]

Discussion

187.	Moderate electrical conductivity is shown by
Answer» Moderate electrical conductivity is shown by

Discussion

188.	y in a chemical formula are electopositive ions written first
Answer» y in a chemical formula are electopositive ions written first

Discussion

189.	How to calculate basicity and acidity of a compound?
Answer» How to calculate basicity and acidity of a compound?

Discussion

190.	X moles of KCl and y moles of BaCl2 are both dissloved in 1kg of water is 1.85 K/ molal what is the observed range of change in freezing temperature if the ratio of x to y is
Answer» X moles of KCl and y moles of BaCl2 are both dissloved in 1kg of water is 1.85 K/ molal what is the observed range of change in freezing temperature if the ratio of x to y is

Discussion

191.	Kb for a monoacidic base whose 0.2 M solution has a pH of 9.50 is:
Answer» $K_{b}$ for a monoacidic base whose $0.2 M$ solution has a $p H$ of $9.50$ is:

Discussion

192.	a 1st order reaction completes 60% in 20min the time required for the completion of 90%of the reaction is approximately
Answer» a 1st order reaction completes 60% in 20min the time required for the completion of 90%of the reaction is approximately

Discussion

193.	how to find alpha value in the order of reaction
Answer» how to find alpha value in the order of reaction

Discussion

194.	The colour of KMnO4 is due to
Answer» The colour of $K M n O_{4}$ is due to

Discussion

195.	36. How to fiind bond order?
Answer» 36. How to fiind bond order?

Discussion

196.	Out of AlCl3 and NaCl,which one is more effective in causing coagulation of a positive solve and why?
Answer» Out of AlCl3 and NaCl,which one is more effective in causing coagulation of a positive solve and why?

Discussion

197.	the degree of dissociation of 0.1 M CH3COOH in 0.1M HCL will b
Answer» the degree of dissociation of 0.1 M CH3COOH in 0.1M HCL will b

Discussion

198.	in a cubic lattice if atom are present only at all the corner and alternate face centrwvthen the packing efficiency will b
Answer» in a cubic lattice if atom are present only at all the corner and alternate face centrwvthen the packing efficiency will b

Discussion

199.	Thin layer chromatography is______.
Answer» Thin layer chromatography is______.

Discussion

200.	Molecular formula of napthaquinone
Answer» Molecular formula of napthaquinone

Discussion

Explore topic-wise InterviewSolutions in .

37.Give the formal charge Nd average bond order of XO bond in the following. (NO2)- (ClO2)- (ClO3)- (ClO4)- (the numbers r the subscript)

Which of the following molecules is expected to rotate the plane polarised light?

In which of the following reactions ΔH is equal to ΔU?

In which of the following molecules all the bonds are not equal?why?.(4) PF3(1) NF3(2) CIF3(3) BF.

The total number of elements of symmetry in a cubic crystal is _____________

A& B are ideal gases. The molecular weights of A& B are in the ratio of 1:4.the pressure of a gas mixture contain ing equal weights of A&B is P atm. What is the partial pressure of B in the mixture? 1 p/5 2 p/2 3 p/2.5 43p/4

Can an infinite set be called as a universal set?

What are functional groups?

what is the meaning of dative bond

1.2Al+3H2So4-A+3H2(g) 2.Element having highest tensle strength

A mixture of chloroxylenol and terpineol acts as

18. How to find the ph of acids and bases

EDTA4− is ethylenediaminetetraacetate ion. The total number of N−Co−O bond angles in [Co(EDTA)]1− complex ion is

hydrolysis of phenylisocyanide with acidic hydrolysis yield

The standard hydrogen electrode potential is zero because: a) hydrogen oxidized easily b) electrode potential is considered as zero c) hydrogen atom has only one electron d) all of this [Pls explain answer]

51. If 2nd step is rate determining step in given mecahnism NO+ Br2-> NOBr (1) NOBr+NO->2NOBr (2) Order of reaction w.r.t NO is (1)zero (2)1 (3)1.5 (4)2

78 Why doesn't nitrogen monoxide dimerise even though it is an odd electron molecule?

Substances that are oxidised and reduced in the following reaction are respectively,N2H4(l)+2H2O2(l)⟶N2(g)+4H2O(l)

If the molar solubility (in mol L−1) of a sparingly soluble salt AB3​ is s. The corresponding solubility product is Ksp. The solubility (s) can be written in terms of Ksp by the relation:

baloonA balloon blown up with 1 mole of gas has a volume of 480 mL at 14 C. At this stage,15.(7/8)th of its maximum capacity. Suggest:(A) Will the halloon burst at 30^° C?it willof these(B) The minimum temperature at w(4)None(3) No, 44 C(2) Yes, 55^° C(1) No, 55^° C

From 280 mg CO. 10^21 molecules are removed. How many g and mole of CO are left

22. A compound AB crystallizes in bcc lattice with unit cell edge length of 380 pm . Calculate 1) the distance between oppositely charged ions in the lattice . 2) Calculate radius of cation A+ if radius of anion B- is 175 pm . ( Assume that cation fits exactly in the cubic void ).

Which mineral has been named incorrectly?

Extraction of aluminium in detail

the strongest lewis base is i.nh3 ii.nf3 iii.nh2oh iv.n(sih3)

Air contains 20% O, by volume. How many c.c. of air will be required for oxidation of 100 cc of acetylene(C2H2)?(1) 1064 cc(2) 212.8 cc(3) 500 cc(4) 1250 cc

An element with atomic mass 60 having FCC structure has a density=6.23g/cubic centimetres.What is the edge length of unit cell.

The rms velocity of hydroge is \sqrt5 time than that of nitrogen.If T is the temperature of the gas then (1)\underset{Hydrogen}T=\underset{Nitrogen}T (2)\underset{Hydrogen}T>\underset{Nitrogen}T (3)\underset{Hydrgen}T

A decimolar solution of potassium ferrocyanide at 300 K is 50% dissociated. Calculate the osmotic pressure of the solution.R=0.082 L atm mol−1 K−1.

The decreasing order of basic strengths of the following compounds is:

On additon of KI to the solution gives a yellow precipitate which soluble in boiling water and reappears on cooling as shining crystals. The cation present in the solution is

Due to global warming, ice on polar caps is likely to melt in larger quantity. Due to this effect Options: Moment of inertia of earth shell decrease Length of the day shall decrease Angular velocity of earth shall decrease Angular momentum of earth shall decrease

A car is moving on a circular path and takes a turn. If R1and R2 be the reactions on the inner and outer wheels respectively, then [MH CET (Med.) 2001] (a)R1  R2(b)R1  R2(c)R1  R2(d)R1  R2

A charge q is placed innon uniform Electric Field ² = 2t² iwhere t is the time.Find its velocity and displacementas a function of time [Assumemass of particle is in ]

Moderate electrical conductivity is shown by

y in a chemical formula are electopositive ions written first

How to calculate basicity and acidity of a compound?

X moles of KCl and y moles of BaCl2 are both dissloved in 1kg of water is 1.85 K/ molal what is the observed range of change in freezing temperature if the ratio of x to y is

Kb for a monoacidic base whose 0.2 M solution has a pH of 9.50 is:

a 1st order reaction completes 60% in 20min the time required for the completion of 90%of the reaction is approximately

how to find alpha value in the order of reaction

The colour of KMnO4 is due to

36. How to fiind bond order?

Out of AlCl3 and NaCl,which one is more effective in causing coagulation of a positive solve and why?

the degree of dissociation of 0.1 M CH3COOH in 0.1M HCL will b

in a cubic lattice if atom are present only at all the corner and alternate face centrwvthen the packing efficiency will b

Thin layer chromatography is______.

Molecular formula of napthaquinone

If the molar solubility (in mol L−1) of a sparingly soluble salt AB3 is s. The corresponding solubility product is Ksp. The solubility (s) can be written in terms of Ksp by the relation: