46295 + Interview Questions in Chemistry

1.	rank acid derivatives such as acid halides esters acid anhydrides and amides with respect to their reactivity with water and explain
Answer» rank acid derivatives such as acid halides esters acid anhydrides and amides with respect to their reactivity with water and explain

Discussion

2.	One of the most important properties of d-block metal cations is the formation of coordinate compounds. Widely used theories that explain bonding in these compounds are valence bond theory and crystal field theory.The pair of complex ions which have the same value of magnetic moments is:
Answer» One of the most important properties of d-block metal cations is the formation of coordinate compounds. Widely used theories that explain bonding in these compounds are valence bond theory and crystal field theory. The pair of complex ions which have the same value of magnetic moments is:

Discussion

3.	50. An organic compound (A) C9H13N dissolves in dil.hcl and releases N2 with HNO2 giving an optically active alcohol. Alcohol on oxidation gives dicarboxylic acid, which on heating form anhydride. The organic compound (A) is
Answer» 50. An organic compound (A) C9H13N dissolves in dil.hcl and releases N2 with HNO2 giving an optically active alcohol. Alcohol on oxidation gives dicarboxylic acid, which on heating form anhydride. The organic compound (A) is

Discussion

4.	how to comapre the acidity of p chloro phenol and benzoic acid
Answer» how to comapre the acidity of p chloro phenol and benzoic acid

Discussion

5.	Which of the following transitions involves maximum amount of energy -
Answer» Which of the following transitions involves maximum amount of energy -

Discussion

6.	2methoxyphenol+CHCl3 \xrightarrow{NaOH
Answer» 2methoxyphenol+CHCl3 \xrightarrow{NaOH

Discussion

7.	In 3 molal solution of glucose. Find the ratio of mol of glucose to water
Answer» In 3 molal solution of glucose. Find the ratio of mol of glucose to water

Discussion

8.	Out of C3H4 and C4H4 which is not planar? And how to find that the molecule is planar or not
Answer» Out of C3H4 and C4H4 which is not planar? And how to find that the molecule is planar or not

Discussion

9.	How oxidation state of carbon suboxide is 4/3?
Answer» How oxidation state of carbon suboxide is 4/3?

Discussion

10.	(D) 0.57 mL(c) 80 mLD. The total volume of 0.1 M KMnO4 solution that are needed to oxidize 100 mg each of ferrousOxalate and ferrous sulphate in a mixture in acidic medium is:(a) 1.096 mL(d) none of these(b) 1.32 mL(c) 5.48 mLVMn0solution.
Answer» (D) 0.57 mL(c) 80 mLD. The total volume of 0.1 M KMnO4 solution that are needed to oxidize 100 mg each of ferrousOxalate and ferrous sulphate in a mixture in acidic medium is:(a) 1.096 mL(d) none of these(b) 1.32 mL(c) 5.48 mLVMn0solution.

Discussion

11.	The common product obtained when NaNO3 is heated at 5000 C and 8000 C is-
Answer» The common product obtained when $N a N O_{3}$ is heated at $500^{0}$ C and $800^{0}$ C is-

Discussion

12.	Which of the following compounds has the highest percentage of ionic character?
Answer» Which of the following compounds has the highest percentage of ionic character?

Discussion

13.	Given that :E0Ag+/Ag=+0.80 VE0Co2+/Co=−0.28 VE0Cu2+/Cu=+0.34 VE0Zn2+/Zn=−0.76 V Which of the following metal has the highest rate of corrosion ?
Answer» Given that : $E_{A g^{+} / A g}^{0} = + 0.80 V E_{C o^{2 +} / C o}^{0} = - 0.28 V E_{C u^{2 +} / C u}^{0} = + 0.34 V E_{Z n^{2 +} / Z n}^{0} = - 0.76 V$ Which of the following metal has the highest rate of corrosion ?

Discussion

14.	What does AΔB mean where A and B are two sets?
Answer» What does AΔB mean where A and B are two sets?

Discussion

15.	47.volume of o2 gas requied al ntp for the complete combustion of 39g of acetylene gas is
Answer» 47.volume of o2 gas requied al ntp for the complete combustion of 39g of acetylene gas is

Discussion

16.	If 0.50 L of a 0.60 M SnSO4 solution is electrolyzed for a period of 30 min using a current of 4.60 A. If inert electrodes are used, what is the molarity of remaining solution?[Atomic wt. of Sn=119 u](Give your answer upto to decimals)
Answer» If $0.50 L$ of a $0.60 M$ $S n S O_{4}$ solution is electrolyzed for a period of $30 min$ using a current of $4.60 A$ . If inert electrodes are used, what is the molarity of remaining solution? [Atomic wt. of $S n = 119 u$ ] (Give your answer upto to decimals)

Discussion

17.	Determine magnitude of the heat of transformation of Cdiamond→C(graphite) (in kcal) from the following data: C(diomond)+O2(g)→CO2(g)...(i) (ΔH=−94.5kcal)C(graphite)+O2(g)→CO2(g)...(ii) (ΔH=−94.0 kcal)
Answer» Determine magnitude of the heat of transformation of $C_{d i a m o n d} \to C_{(g r a p h i t e)}$ $(i n k c a l)$ from the following data: $C_{(d i o m o n d)} + O_{2} (g) \to C O_{2} (g) . . . (i) (Δ H = - 94.5 k c a l) C_{(g r a p h i t e)} + O_{2} (g) \to C O_{2} (g) . . . (i i) (Δ H = - 94.0 k c a l)$

Discussion

18.	What is molecular formula of benzene?
Answer» What is molecular formula of benzene?

Discussion

19.	Write the rate law expression for the given equationN2O5= 2NO2+0.5O2
Answer» Write the rate law expression for the given equation N2O5= 2NO2+0.5O2

Discussion

20.	describe a method for refining Nickel.
Answer» describe a method for refining Nickel.

Discussion

21.	Which of the following is formed when lithium is heated in air?
Answer» Which of the following is formed when lithium is heated in air?

Discussion

22.	Difference between vector products and scalar products
Answer» Difference between vector products and scalar products

Discussion

23.	Which carbocation is more stable and why ch2=ch-ch2+ , ch≡c-ch2+
Answer» Which carbocation is more stable and why ch2=ch-ch2+ , ch≡c-ch2+

Discussion

24.	∧∘m(NH4OH) is equal to
Answer» $\land_{m}^{\circ} (N H_{4} O H)$ is equal to

Discussion

25.	What does infinitesimal mean?
Answer» What does infinitesimal mean?

Discussion

26.	what is chemical reaction and reaction ?
Answer» what is chemical reaction and reaction ?

Discussion

27.	A catalystis used [CPMT 1989]
Answer» A catalyst is used [CPMT 1989]

Discussion

28.	Ammonia gas is passed into water yielding a solution of density 0.93g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of solution is
Answer» Ammonia gas is passed into water yielding a solution of density 0.93g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of solution is

Discussion

29.	Is esterification endothermic or exothermic?and give reasons for the same
Answer» Is esterification endothermic or exothermic?and give reasons for the same

Discussion

30.	Which is the strongest hydrogen bond and the weakest hydrogen bond in the following. 1)H2S,H2O. 2) H2O,H2S. 3)NH3,C2H5OH. 4)C2H5OH,NH3
Answer» Which is the strongest hydrogen bond and the weakest hydrogen bond in the following. 1)H2S,H2O. 2) H2O,H2S. 3)NH3,C2H5OH. 4)C2H5OH,NH3

Discussion

31.	Are number of enantiomer pair and no. of optical isomers for a compound (say, [MA2B2C2]) are the same?
Answer» Are number of enantiomer pair and no. of optical isomers for a compound (say, [MA2B2C2]) are the same?

Discussion

32.	Which of the following represents the correct chemical structure of Kevlar?
Answer» Which of the following represents the correct chemical structure of Kevlar?

Discussion

33.	The numbers of lone pairs and bond pairs in hydrazine are, respectively
Answer» The numbers of lone pairs and bond pairs in hydrazine are, respectively

Discussion

34.	66. What is the minimum conc. of Ag^+ that would remain unreduced by a standard Fe^{3+}\vert Fe^{2+} electrode at equilibrium? E^° Fe^{3+}/Fe^{2+} = 0.771V and E^° Ag^+/Ag =0.799V
Answer» 66. What is the minimum conc. of Ag^+ that would remain unreduced by a standard Fe^{3+}\vert Fe^{2+} electrode at equilibrium? E^° Fe^{3+}/Fe^{2+} = 0.771V and E^° Ag^+/Ag =0.799V

Discussion

35.	The rate of reaction with AgNO3 will be
Answer» The rate of reaction with $A g N O_{3}$ will be

35.

The rate of reaction with AgNO3 will be

Answer»

The rate of reaction with $A g N O_{3}$ will be

Discussion

36.	What is the nature of the bonding in Phosphorus tri-chloride?
Answer» What is the nature of the bonding in Phosphorus tri-chloride?

Discussion

37.	In which of the following molecules the lone pairs occupy axial positions A. XeF2 B.XeF4 C.BrF5 D.SCl4
Answer» In which of the following molecules the lone pairs occupy axial positions A. $X e F_{2}$ B. $X e F_{4}$ C. $B r F_{5}$ D. $S C l_{4}$

37.

In which of the following molecules the lone pairs occupy axial positions A. XeF2 B.XeF4 C.BrF5 D.SCl4

Answer»

In which of the following molecules the lone pairs occupy axial positions

A. $X e F_{2}$ B. $X e F_{4}$ C. $B r F_{5}$ D. $S C l_{4}$

Discussion

38.	9. How to s orbital make gerade and ungerade
Answer» 9. How to s orbital make gerade and ungerade

Discussion

39.	B2H6 reacts with O2 and H2O respectvely to form:
Answer» $B_{2} H_{6}$ reacts with $O_{2}$ and $H_{2} O$ respectvely to form:

Discussion

40.	The angular momentum of electron in 'd' orbital is equal to1) 0 h2) √6 h3) √2 h4) 2√3 h
Answer» The angular momentum of electron in 'd' orbital is equal to 1) 0 h 2) √6 h 3) √2 h 4) 2√3 h

Discussion

41.	The axial overlap between the two orbitals leads to the formation of a
Answer» The axial overlap between the two orbitals leads to the formation of a

Discussion

42.	Mention few properties of covalent bonding
Answer» Mention few properties of covalent bonding

Discussion

43.	Phosgene is a common name for
Answer» Phosgene is a common name for

Discussion

44.	Which of the following statements is correct regarding the chirality (optical isomerism) of the cis and trans isomers of the type M(aa)2b2 (M stands for a metal, a and b are achiral ligands and aa is a bidentate ligand) ?
Answer» Which of the following statements is correct regarding the chirality (optical isomerism) of the cis and trans isomers of the type $M (a a)_{2} b_{2}$ (M stands for a metal, a and b are achiral ligands and aa is a bidentate ligand) ?

Discussion

45.	77. 25 ml of a solution containing NaOH and Na2CO3(sodium bi carbonate) required (1) 50 ml of 0.2 N HCl using phenolphthalein as an indicator (2) 72 ml of 0.2N HCl when titrated using methyl orange as an indicator. The ratio of weight of NaOH and Na2CO3 in the solution is (1) 0.48 (2)0.44 (3)0.40 (4)0.38
Answer» 77. 25 ml of a solution containing NaOH and Na2CO3(sodium bi carbonate) required (1) 50 ml of 0.2 N HCl using phenolphthalein as an indicator (2) 72 ml of 0.2N HCl when titrated using methyl orange as an indicator. The ratio of weight of NaOH and Na2CO3 in the solution is (1) 0.48 (2)0.44 (3)0.40 (4)0.38

Discussion

46.	The time for half life period of a certain reaction, A→Products is 1 hour. When the initial concentration of the reactant 'A', is 2.0 mol L−1, how much time (in hour) does it take for its concentration to come from 0.50 mol L−1 to 0.25 mol L−1, if it is a zero order reaction?
Answer» The time for half life period of a certain reaction, $A \to Products$ is 1 hour. When the initial concentration of the reactant 'A', is $2.0 {mol L}^{- 1}$ , how much time (in hour) does it take for its concentration to come from $0.50 {mol L}^{- 1}$ to $0.25 {mol L}^{- 1}$ , if it is a zero order reaction?

Discussion

47.	A man running on horizontal Road at 8km/h finds the rain falling vertically. He increases his speed to 12 km/h and find that drops make angle 30 degree with vertical. Find the speed and direction of the rain with respect to the road.
Answer» A man running on horizontal Road at 8km/h finds the rain falling vertically. He increases his speed to 12 km/h and find that drops make angle 30 degree with vertical. Find the speed and direction of the rain with respect to the road.

Discussion

48.	Why a gas exerts pressure on the wall of container?
Answer» Why a gas exerts pressure on the wall of container?

Discussion

49.	How many pair(s) among the following show positive deviation from ideal behaviour? ___ (A) Acetone and Benzene (B) HCl and Water (C) Ethyl alcohol and Water (D) CCl4 and CHCl3 (E) Ethyl chloride and Ethyl bromide (F) Water and HClO4
Answer» How many pair(s) among the following show positive deviation from ideal behaviour? ___ (A) Acetone and Benzene (B) HCl and Water (C) Ethyl alcohol and Water (D) $C C l_{4}$ and $C H C l_{3}$ (E) Ethyl chloride and Ethyl bromide (F) Water and $H C l O_{4}$

Discussion

50.	Comprehension:The elements of group 1 describe, more clearly than any other group of elements, the effects of increasing the size of atoms or ions on the physical and chemical properties. The chemical and physical properties of the elements are closely related to their electronic structures and sizes. These metals are highly electropositive and thus form very strong bases, and have quite stable oxo-salts. In the manufacturing of sodium hydroxide, chlorine and sodium carbonate, the sodium chloride is used as starting material.Which of the following acts as an oxidising as well as reducing agent ?
Answer» Comprehension: The elements of group 1 describe, more clearly than any other group of elements, the effects of increasing the size of atoms or ions on the physical and chemical properties. The chemical and physical properties of the elements are closely related to their electronic structures and sizes. These metals are highly electropositive and thus form very strong bases, and have quite stable oxo-salts. In the manufacturing of sodium hydroxide, chlorine and sodium carbonate, the sodium chloride is used as starting material. Which of the following acts as an oxidising as well as reducing agent ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

rank acid derivatives such as acid halides esters acid anhydrides and amides with respect to their reactivity with water and explain

One of the most important properties of d-block metal cations is the formation of coordinate compounds. Widely used theories that explain bonding in these compounds are valence bond theory and crystal field theory.The pair of complex ions which have the same value of magnetic moments is:

50. An organic compound (A) C9H13N dissolves in dil.hcl and releases N2 with HNO2 giving an optically active alcohol. Alcohol on oxidation gives dicarboxylic acid, which on heating form anhydride. The organic compound (A) is

how to comapre the acidity of p chloro phenol and benzoic acid

Which of the following transitions involves maximum amount of energy -

2methoxyphenol+CHCl3 \xrightarrow{NaOH

In 3 molal solution of glucose. Find the ratio of mol of glucose to water

Out of C3H4 and C4H4 which is not planar? And how to find that the molecule is planar or not

How oxidation state of carbon suboxide is 4/3?

(D) 0.57 mL(c) 80 mLD. The total volume of 0.1 M KMnO4 solution that are needed to oxidize 100 mg each of ferrousOxalate and ferrous sulphate in a mixture in acidic medium is:(a) 1.096 mL(d) none of these(b) 1.32 mL(c) 5.48 mLVMn0solution.

The common product obtained when NaNO3 is heated at 5000 C and 8000 C is-

Which of the following compounds has the highest percentage of ionic character?

Given that :E0Ag+/Ag=+0.80 VE0Co2+/Co=−0.28 VE0Cu2+/Cu=+0.34 VE0Zn2+/Zn=−0.76 V Which of the following metal has the highest rate of corrosion ?

What does AΔB mean where A and B are two sets?

47.volume of o2 gas requied al ntp for the complete combustion of 39g of acetylene gas is

If 0.50 L of a 0.60 M SnSO4 solution is electrolyzed for a period of 30 min using a current of 4.60 A. If inert electrodes are used, what is the molarity of remaining solution?[Atomic wt. of Sn=119 u](Give your answer upto to decimals)

Determine magnitude of the heat of transformation of Cdiamond→C(graphite) (in kcal) from the following data: C(diomond)+O2(g)→CO2(g)...(i) (ΔH=−94.5kcal)C(graphite)+O2(g)→CO2(g)...(ii) (ΔH=−94.0 kcal)

What is molecular formula of benzene?

Write the rate law expression for the given equationN2O5= 2NO2+0.5O2

describe a method for refining Nickel.

Which of the following is formed when lithium is heated in air?

Difference between vector products and scalar products

Which carbocation is more stable and why ch2=ch-ch2+ , ch≡c-ch2+

∧∘m(NH4OH) is equal to

What does infinitesimal mean?

what is chemical reaction and reaction ?

A catalystis used [CPMT 1989]

Ammonia gas is passed into water yielding a solution of density 0.93g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of solution is

Is esterification endothermic or exothermic?and give reasons for the same

Which is the strongest hydrogen bond and the weakest hydrogen bond in the following. 1)H2S,H2O. 2) H2O,H2S. 3)NH3,C2H5OH. 4)C2H5OH,NH3

Are number of enantiomer pair and no. of optical isomers for a compound (say, [MA2B2C2]) are the same?

Which of the following represents the correct chemical structure of Kevlar?

The numbers of lone pairs and bond pairs in hydrazine are, respectively

66. What is the minimum conc. of Ag^+ that would remain unreduced by a standard Fe^{3+}\vert Fe^{2+} electrode at equilibrium? E^° Fe^{3+}/Fe^{2+} = 0.771V and E^° Ag^+/Ag =0.799V

The rate of reaction with AgNO3 will be

What is the nature of the bonding in Phosphorus tri-chloride?

In which of the following molecules the lone pairs occupy axial positions A. XeF2 B.XeF4 C.BrF5 D.SCl4

9. How to s orbital make gerade and ungerade

B2H6 reacts with O2 and H2O respectvely to form:

The angular momentum of electron in 'd' orbital is equal to1) 0 h2) √6 h3) √2 h4) 2√3 h

The axial overlap between the two orbitals leads to the formation of a

Mention few properties of covalent bonding

Phosgene is a common name for

Which of the following statements is correct regarding the chirality (optical isomerism) of the cis and trans isomers of the type M(aa)2b2 (M stands for a metal, a and b are achiral ligands and aa is a bidentate ligand) ?

The time for half life period of a certain reaction, A→Products is 1 hour. When the initial concentration of the reactant 'A', is 2.0 mol L−1, how much time (in hour) does it take for its concentration to come from 0.50 mol L−1 to 0.25 mol L−1, if it is a zero order reaction?

A man running on horizontal Road at 8km/h finds the rain falling vertically. He increases his speed to 12 km/h and find that drops make angle 30 degree with vertical. Find the speed and direction of the rain with respect to the road.

Why a gas exerts pressure on the wall of container?

How many pair(s) among the following show positive deviation from ideal behaviour? ___ (A) Acetone and Benzene (B) HCl and Water (C) Ethyl alcohol and Water (D) CCl4 and CHCl3 (E) Ethyl chloride and Ethyl bromide (F) Water and HClO4