46295 + Interview Questions in Chemistry

1.	Which of the following structure will be produced when a 'ring flip' occurs in the chair form of the following compound ?
Answer» Which of the following structure will be produced when a 'ring flip' occurs in the chair form of the following compound ?

Discussion

2.	15.H2PtCl6 of nameIUPACU
Answer» 15.H2PtCl6 of nameIUPACU

Discussion

3.	20.Equilibrium constant in every case is applicable for 1)gaseous substance only 2)solid substance only (3) solid liquid both 4)aquous solution and gaseous substance only. 5) for every states of matter.
Answer» 20.Equilibrium constant in every case is applicable for 1)gaseous substance only 2)solid substance only (3) solid liquid both 4)aquous solution and gaseous substance only. 5) for every states of matter.

Discussion

4.	Consider the following equation H2S2O7+H2O→(A) When compound (A) is akkowed to react with P2O5, compound (C) is formed. How many dπ−pπ bonds are present in compound (C).
Answer» Consider the following equation $H_{2} S_{2} O_{7} + H_{2} O \to (A)$ When compound (A) is akkowed to react with $P_{2} O_{5}$ , compound (C) is formed. How many $d_{π} - p_{π}$ bonds are present in compound (C).

Discussion

5.	Value of ln8/ln16 and loge12/log20.
Answer» Value of ln8/ln16 and loge12/log20.

Discussion

6.	Methyl ketones are usually characterised through
Answer» Methyl ketones are usually characterised through

Discussion

7.	The number of structural isomers of C4H9Cl that are primary haloalkane are:
Answer» The number of structural isomers of C₄H₉Cl that are primary haloalkane are:

Discussion

8.	The reaction R - Br + NaCN → R-CN + NaBr, is an example of
Answer» The reaction R - Br + NaCN → R-CN + NaBr, is an example of

Discussion

9.	Q.. What are Vicious liquid. Explain briefly?
Answer» Q.. What are Vicious liquid. Explain briefly?

Discussion

10.	Volume of Co2 is obtained at stp by the complete decompostion of 9.85 g Na2Co3
Answer» Volume of Co2 is obtained at stp by the complete decompostion of 9.85 g Na2Co3

Discussion

11.	ntMolarity of OH- when 100 ml of 0.2 M H2SO4 solution is mixed with 100 ml of 0.2 M Ca(OH)2 solution isn nt(1) 0.2 Mn nt(2) 0.1 Mn nt(3) 0.05 Mn nt(4) Zeron
Answer» ntMolarity of OH- when 100 ml of 0.2 M H2SO4 solution is mixed with 100 ml of 0.2 M Ca(OH)2 solution isn nt(1) 0.2 Mn nt(2) 0.1 Mn nt(3) 0.05 Mn nt(4) Zeron

Discussion

12.	x grams of CaCO3 was completely decomposed. The mass of the solid residue formed is 28 g. What is the value of ‘x’ in grams?
Answer» x grams of $C a C O_{3}$ was completely decomposed. The mass of the solid residue formed is $28 g$ . What is the value of ‘x’ in grams?

Discussion

13.	24 A certain reaction is at equilibrium at 82 degree and delta H for this reaction is 21.3 kJ. What would be the value of delta S for this reaction?
Answer» 24 A certain reaction is at equilibrium at 82 degree and delta H for this reaction is 21.3 kJ. What would be the value of delta S for this reaction?

Discussion

14.	WHAT IS MOLARITY
Answer» WHAT IS MOLARITY

Discussion

15.	which shell would be the first to have g subshell
Answer» which shell would be the first to have g subshell

Discussion

16.	The correct order of bond energies of singlecovalent bond is(1) H- H> F- F >O-O>N - N > C-C(2) H -H> C - C > N - N > O - O > F-F(3) C- C > F -F>H-H>O-O>N-(4) C-C>H - H > F- F> N - N> O- O
Answer» The correct order of bond energies of singlecovalent bond is(1) H- H> F- F >O-O>N - N > C-C(2) H -H> C - C > N - N > O - O > F-F(3) C- C > F -F>H-H>O-O>N-(4) C-C>H - H > F- F> N - N> O- O

Discussion

17.	When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
Answer» When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

Discussion

18.	Which of the following is a non-metal
Answer» Which of the following is a non-metal

18.

Which of the following is a non-metal

Answer»

Which of the following is a non-metal

Discussion

19.	The electronic configuration of Gd2+ is (at. No. of Gd is 64)
Answer» The electronic configuration of Gd²⁺ is (at. No. of Gd is 64)

Discussion

20.	Whenthe temperature is lowered and pressure is raised, the adsorption of a gas on asolid [MP PMT 1997]
Answer» When the temperature is lowered and pressure is raised, the adsorption of a gas on a solid [MP PMT 1997]

Discussion

21.	Magnetic moment 2.84 B.M. is given by : (At. Nos., Ni = 28, Ti = 22, Cr = 24, Co = 27)
Answer» Magnetic moment 2.84 B.M. is given by : (At. Nos., Ni = 28, Ti = 22, Cr = 24, Co = 27)

Discussion

22.	What will be the n factor of HNO}3 if it is acting both as an acid and an oxidising agent?
Answer» What will be the n factor of HNO}3 if it is acting both as an acid and an oxidising agent?

Discussion

23.	explain williamson ether synthesi ls in detail with limitations such as double bond character in case of aromatic reac†an t
Answer» explain williamson ether synthesi ls in detail with limitations such as double bond character in case of aromatic reac†an t

Discussion

24.	The product of acid catalysed hydration of 2-phenylpropene is
Answer» The product of acid catalysed hydration of 2-phenylpropene is

Discussion

25.	Solubility product constant (Ksp) of salts of types MX,MX2 and MX3 at temperature T are 4.0×10−8,3.2×10−14 and 2.7×10−15 respectively. Solubilities (mol dm−3) of the salts at temperature 'T' are in the order :
Answer» Solubility product constant $(K_{s p})$ of salts of types $M X, M X_{2}$ and $M X_{3}$ at temperature T are $4.0 \times 10^{- 8}, 3.2 \times 10^{- 14}$ and $2.7 \times 10^{- 15}$ respectively. Solubilities $(m o l d m^{- 3})$ of the salts at temperature 'T' are in the order :

Discussion

26.	Which of the following reactions will go faster if the concentration of the nucleophile is increased?
Answer» Which of the following reactions will go faster if the concentration of the nucleophile is increased?

Discussion

27.	Determine the following regarding ICl−4(i) Number of valance electrons in central atom(ii) Number of Ligands(iii) Anionic charge(iv) Cationic charge
Answer» Determine the following regarding $I C l_{4}^{-}$ (i) Number of valance electrons in central atom (ii) Number of Ligands (iii) Anionic charge (iv) Cationic charge

27.

Determine the following regarding ICl−4(i) Number of valance electrons in central atom(ii) Number of Ligands(iii) Anionic charge(iv) Cationic charge

Answer»

Determine the following regarding $I C l_{4}^{-}$

(i) Number of valance electrons in central atom

(ii) Number of Ligands

(iii) Anionic charge

(iv) Cationic charge

Discussion

28.	Two Cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure, B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened.The process is
Answer» Two Cylinders $A$ and $B$ of equal capacity are connected to each other via a stop cock. $A$ contains an ideal gas at standard temperature and pressure, $B$ is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened.The process is

Discussion

29.	CH3COOH(l) + C2H5OH(l) ⇌ CH3COOC2H5(l) + H2O(l);Kc=4 In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. H2SO4. On equilibrium being attained
Answer» $C H_{3} C O O H (l) + C_{2} H_{5} O H (l) ⇌ C H_{3} C O O C_{2} H_{5} (l) + H_{2} O (l); K_{c} = 4$ In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. $H_{2} S O_{4}$ . On equilibrium being attained

29.

CH3COOH(l) + C2H5OH(l) ⇌ CH3COOC2H5(l) + H2O(l);Kc=4 In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. H2SO4. On equilibrium being attained

Answer»

$C H_{3} C O O H (l) + C_{2} H_{5} O H (l) ⇌ C H_{3} C O O C_{2} H_{5} (l) + H_{2} O (l); K_{c} = 4$

In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. $H_{2} S O_{4}$ . On equilibrium being attained

Discussion

30.	In the reaction,Vo+Fe2o3 it gives FeO +V2O5, the eq.wt. of V2O5 is equal to A) Mol.wt. B)Mol.wt./8 C)Mol.wt./6 D)none of these.
Answer» In the reaction,Vo+Fe2o3 it gives FeO +V2O5, the eq.wt. of V2O5 is equal to A) Mol.wt. B)Mol.wt./8 C)Mol.wt./6 D)none of these.

Discussion

31.	Explain the structure of diamond in full detail.
Answer» Explain the structure of diamond in full detail.

Discussion

32.	The binary mixture that has the same composition both in the liquid and vapour phase is known as
Answer» The binary mixture that has the same composition both in the liquid and vapour phase is known as

Discussion

33.	P4 (white phosphorus) when treated with thionyl chloride produces phosphorus __________ . On the other hand if P4 (white phosphorus) is treated with sulphuryl chloride we get phosphorus __________ .
Answer» $P_{4}$ (white phosphorus) when treated with thionyl chloride produces phosphorus __________ . On the other hand if $P_{4}$ (white phosphorus) is treated with sulphuryl chloride we get phosphorus __________ .

Discussion

34.	Stronger H bonding is present in CH3OH or CCl3OH
Answer» Stronger H bonding is present in CH3OH or CCl3OH

Discussion

35.	Ch-organic chemistry Subtopic- resonance or mesomeric effect Time-2:01 to 3:25Why neutral species is more stable then charged species
Answer» Ch-organic chemistry Subtopic- resonance or mesomeric effect Time-2:01 to 3:25 Why neutral species is more stable then charged species

Discussion

36.	27. Differentiate atoms,elements,molecules and compounds
Answer» 27. Differentiate atoms,elements,molecules and compounds

Discussion

37.	49. 11.2 litre of a hydrocarbon at STP produces 44.8 litre of CO_2 at STP and 36 gm of H_2O duringits combustion. Calculate the moleculer formula of hydrocarbon
Answer» 49. 11.2 litre of a hydrocarbon at STP produces 44.8 litre of CO_2 at STP and 36 gm of H_2O duringits combustion. Calculate the moleculer formula of hydrocarbon

Discussion

38.	In silicon dioxide:
Answer» In silicon dioxide:

Discussion

39.	Urea forms an ideal solution in water.Calculate the vapour pressure of an aqueous solution containing 5% by mass of urea at 298K. At 298K vapour pressure of water is 23.75mm hg
Answer» Urea forms an ideal solution in water.Calculate the vapour pressure of an aqueous solution containing 5% by mass of urea at 298K. At 298K vapour pressure of water is 23.75mm hg

Discussion

40.	The complex ion which shows geometrical isomerism is
Answer» The complex ion which shows geometrical isomerism is

Discussion

41.	Calculate the uncertainity in velocity of a cricket ball of mass 150 g if the uncertainty in its position is of the order of 1 oA. (h=6.6×10−34kgm2s−1)
Answer» Calculate the uncertainity in velocity of a cricket ball of mass 150 g if the uncertainty in its position is of the order of $1 o A .$ $(h = 6.6 \times 10^{- 34} k g m^{2} s^{- 1})$

Discussion

42.	Which of the following species exhibits the diamagnetic behaviour?
Answer» Which of the following species exhibits the diamagnetic behaviour?

Discussion

43.	Which of the following is the molecular mass (in g/mol) of propanol?
Answer» Which of the following is the molecular mass (in g/mol) of propanol?

Discussion

44.	difference between electron affinity and electron gain enthalp
Answer» difference between electron affinity and electron gain enthalp

Discussion

45.	why helium do not form molecule explain by VBT and MOT
Answer» why helium do not form molecule explain by VBT and MOT

Discussion

46.	define anodising process
Answer» define anodising process

Discussion

47.	A solution containing 10.2 g glycerine per litre is isotonic with a 2% solution of glucose. What is the molecular mass of Glycerine? a) 91.8 gb) 1198 gc) 83.9 gd) 890.3 g
Answer» A solution containing 10.2 g glycerine per litre is isotonic with a 2% solution of glucose. What is the molecular mass of Glycerine? a) 91.8 g b) 1198 g c) 83.9 g d) 890.3 g

Discussion

48.	Dis vrai ou faux:1. Marcel est médecin.2. Il travaille chez Macintosh.3. Il est l'oncle de Denis.4. Il est allé à New Delhi avec un billet aller-retour confirmé.5. Il envoie un message à Pauline.
Answer» Dis vrai ou faux: 1. Marcel est médecin. 2. Il travaille chez Macintosh. 3. Il est l'oncle de Denis. 4. Il est allé à New Delhi avec un billet aller-retour confirmé. 5. Il envoie un message à Pauline.

Discussion

49.	If the relative density of iron is 7.874 and density of water is 1000 kg m−3, then what is the density of iron?
Answer» If the relative density of iron is 7.874 and density of water is $1000 k g m^{- 3}$ , then what is the density of iron?

Discussion

50.	Who is God of chemistry?
Answer» Who is God of chemistry?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following structure will be produced when a 'ring flip' occurs in the chair form of the following compound ?

15.H2PtCl6 of nameIUPACU

20.Equilibrium constant in every case is applicable for 1)gaseous substance only 2)solid substance only (3) solid liquid both 4)aquous solution and gaseous substance only. 5) for every states of matter.

Consider the following equation H2S2O7+H2O→(A) When compound (A) is akkowed to react with P2O5, compound (C) is formed. How many dπ−pπ bonds are present in compound (C).

Value of ln8/ln16 and loge12/log20.

Methyl ketones are usually characterised through

The number of structural isomers of C4H9Cl that are primary haloalkane are:

The reaction R - Br + NaCN → R-CN + NaBr, is an example of

Q.. What are Vicious liquid. Explain briefly?

Volume of Co2 is obtained at stp by the complete decompostion of 9.85 g Na2Co3

ntMolarity of OH- when 100 ml of 0.2 M H2SO4 solution is mixed with 100 ml of 0.2 M Ca(OH)2 solution isn nt(1) 0.2 Mn nt(2) 0.1 Mn nt(3) 0.05 Mn nt(4) Zeron

x grams of CaCO3 was completely decomposed. The mass of the solid residue formed is 28 g. What is the value of ‘x’ in grams?

24 A certain reaction is at equilibrium at 82 degree and delta H for this reaction is 21.3 kJ. What would be the value of delta S for this reaction?

WHAT IS MOLARITY

which shell would be the first to have g subshell

The correct order of bond energies of singlecovalent bond is(1) H- H> F- F >O-O>N - N > C-C(2) H -H> C - C > N - N > O - O > F-F(3) C- C > F -F>H-H>O-O>N-(4) C-C>H - H > F- F> N - N> O- O

When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

Which of the following is a non-metal

The electronic configuration of Gd2+ is (at. No. of Gd is 64)

Whenthe temperature is lowered and pressure is raised, the adsorption of a gas on asolid [MP PMT 1997]

Magnetic moment 2.84 B.M. is given by : (At. Nos., Ni = 28, Ti = 22, Cr = 24, Co = 27)

What will be the n factor of HNO}3 if it is acting both as an acid and an oxidising agent?

explain williamson ether synthesi ls in detail with limitations such as double bond character in case of aromatic reac†an t

The product of acid catalysed hydration of 2-phenylpropene is

Solubility product constant (Ksp) of salts of types MX,MX2 and MX3 at temperature T are 4.0×10−8,3.2×10−14 and 2.7×10−15 respectively. Solubilities (mol dm−3) of the salts at temperature 'T' are in the order :

Which of the following reactions will go faster if the concentration of the nucleophile is increased?

Determine the following regarding ICl−4(i) Number of valance electrons in central atom(ii) Number of Ligands(iii) Anionic charge(iv) Cationic charge

Two Cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure, B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened.The process is

CH3COOH(l) + C2H5OH(l) ⇌ CH3COOC2H5(l) + H2O(l);Kc=4 In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. H2SO4. On equilibrium being attained

In the reaction,Vo+Fe2o3 it gives FeO +V2O5, the eq.wt. of V2O5 is equal to A) Mol.wt. B)Mol.wt./8 C)Mol.wt./6 D)none of these.

Explain the structure of diamond in full detail.

The binary mixture that has the same composition both in the liquid and vapour phase is known as

P4 (white phosphorus) when treated with thionyl chloride produces phosphorus __________ . On the other hand if P4 (white phosphorus) is treated with sulphuryl chloride we get phosphorus __________ .

Stronger H bonding is present in CH3OH or CCl3OH

Ch-organic chemistry Subtopic- resonance or mesomeric effect Time-2:01 to 3:25Why neutral species is more stable then charged species

27. Differentiate atoms,elements,molecules and compounds

49. 11.2 litre of a hydrocarbon at STP produces 44.8 litre of CO_2 at STP and 36 gm of H_2O duringits combustion. Calculate the moleculer formula of hydrocarbon

In silicon dioxide:

Urea forms an ideal solution in water.Calculate the vapour pressure of an aqueous solution containing 5% by mass of urea at 298K. At 298K vapour pressure of water is 23.75mm hg

The complex ion which shows geometrical isomerism is

Calculate the uncertainity in velocity of a cricket ball of mass 150 g if the uncertainty in its position is of the order of 1 oA. (h=6.6×10−34kgm2s−1)

Which of the following species exhibits the diamagnetic behaviour?

Which of the following is the molecular mass (in g/mol) of propanol?

difference between electron affinity and electron gain enthalp

why helium do not form molecule explain by VBT and MOT

define anodising process

A solution containing 10.2 g glycerine per litre is isotonic with a 2% solution of glucose. What is the molecular mass of Glycerine? a) 91.8 gb) 1198 gc) 83.9 gd) 890.3 g

Dis vrai ou faux:1. Marcel est médecin.2. Il travaille chez Macintosh.3. Il est l'oncle de Denis.4. Il est allé à New Delhi avec un billet aller-retour confirmé.5. Il envoie un message à Pauline.

If the relative density of iron is 7.874 and density of water is 1000 kg m−3, then what is the density of iron?

Who is God of chemistry?

P4 (white phosphorus) when treated with thionyl chloride produces phosphorus . On the other hand if P4 (white phosphorus) is treated with sulphuryl chloride we get phosphorus .