46295 + Interview Questions in Chemistry Page 58 InterviewSolution

2851.	47.Elevation of Boiling Point of 1M KCl solution is double than that of 1M sugar solution. Why??
Answer» 47.Elevation of Boiling Point of 1M KCl solution is double than that of 1M sugar solution. Why??

Discussion

2852.	36.what is formula of butanol how to find formula of butanol
Answer» 36.what is formula of butanol how to find formula of butanol

Discussion

2853.	At 1990 K and 1 atm pressure, there are equal number of Cl2 molecules and Cl atoms in the reaction mixture. The value of Kp for the reaction Cl2(g)⇌2Cl(g) under the above condition is x×10−1. The value of x is ______.(rounded off to the nearest integer)
Answer» At $1990 K$ and $1 a t m$ pressure, there are equal number of $C l_{2}$ molecules and $C l$ atoms in the reaction mixture. The value of $K_{p}$ for the reaction $C l_{2 (g)} ⇌ 2 C l_{(g)}$ under the above condition is $x \times 10^{- 1}$ . The value of $x$ is ______. (rounded off to the nearest integer)

Discussion

2854.	Potential difference across a cell is V and its emf is E. Which of the following is correct?(1) E=V(2)E>V(3)E
Answer» Potential difference across a cell is V and its emf is E. Which of the following is correct? (1) E=V (2)E>V (3)E

Discussion

2855.	The correct order of +M effect of ′N′ containing functional group on benzene ring, amongst the given compounds is (I) (II) (III) (IV)
Answer» The correct order of $+ M$ effect of $^{'} N^{'}$ containing functional group on benzene ring, amongst the given compounds is (I) (II) (III) (IV)

Discussion

2856.	Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: K3[Co(C2O4)3] (NH4)2[CoF4] Cis−[Cr(en)2Cl2]Cl [Mn(H2O)6]SO4
Answer» Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: $K_{3} [C o (C_{2} O_{4})_{3}]$ $(N H_{4})_{2} [C o F_{4}]$ $C i s - [C r (e n)_{2} C l_{2}] C l$ $[M n (H_{2} O)_{6}] S O_{4}$

2856.

Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: K3[Co(C2O4)3] (NH4)2[CoF4] Cis−[Cr(en)2Cl2]Cl [Mn(H2O)6]SO4

Answer»

Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes:
$K_{3} [C o (C_{2} O_{4})_{3}]$

$(N H_{4})_{2} [C o F_{4}]$

$C i s - [C r (e n)_{2} C l_{2}] C l$

$[M n (H_{2} O)_{6}] S O_{4}$

Discussion

2857.	Identify the trans isomer of [Pt(NH3)2Cl2] from the following
Answer» Identify the trans isomer of $[P t (N H_{3})_{2} C l_{2}]$ from the following

Discussion

2858.	Find the distance of tetrahedral void from the corner of a cube for a ccp crystal lattice.Given:The edge length of the unit cell is 20√3 pm
Answer» Find the distance of tetrahedral void from the corner of a cube for a ccp crystal lattice. Given: The edge length of the unit cell is $20 \sqrt{3} p m$

Discussion

2859.	What is a nuclear reactor? Name the first nuclear reactor of India. Also, mention the date on which it went critical.
Answer» What is a nuclear reactor? Name the first nuclear reactor of India. Also, mention the date on which it went critical.

Discussion

2860.	An aqueous solution containing 58.8% w/v ofH2S04 has density 1.388 g/mL. The molality with respect to H2S04 of the solution is
Answer» An aqueous solution containing 58.8% w/v ofH2S04 has density 1.388 g/mL. The molality with respect to H2S04 of the solution is

Discussion

2861.	The element having highest ionisation potential is:
Answer» The element having highest ionisation potential is:

Discussion

2862.	Writethe equations for the preparation of 1−iodobutane from(i) 1-butanol (ii) 1-chlorobutane (iii) but-1-ene.
Answer» Write the equations for the preparation of 1−iodobutane from (i) 1-butanol (ii) 1-chlorobutane (iii) but-1-ene.

2862.

Writethe equations for the preparation of 1−iodobutane from(i) 1-butanol (ii) 1-chlorobutane (iii) but-1-ene.

Answer»

Write
the equations for the preparation of 1−iodobutane from

(i)
1-butanol

(ii)
1-chlorobutane

(iii)
but-1-ene.

Discussion

2863.	21. How to derive formula for the number of regions into which a set of n coplanar lines in general position divide the plane.
Answer» 21. How to derive formula for the number of regions into which a set of n coplanar lines in general position divide the plane.

Discussion

2864.	n factor of fes2 in the below reaction:- fes2 + o2 ----> fe2o3 + so2.
Answer» n factor of fes2 in the below reaction:- fes2 + o2 ----> fe2o3 + so2.

Discussion

2865.	What do you mean by a saturated solution?
Answer» What do you mean by a saturated solution?

Discussion

2866.	The reducing agent in the following reaction is:Pb(s) + Cu2+(aq) → Pb2+ (aq) + Cu(s)
Answer» The reducing agent in the following reaction is: Pb(s) + Cu²⁺(aq) → Pb²⁺ (aq) + Cu(s)

Discussion

2867.	The number of waves in the third orbit of hydrogen atom is?
Answer» The number of waves in the third orbit of hydrogen atom is?

Discussion

2868.	sp3- hybridsed nitrogen is present in:
Answer» $s p^{3}$ - hybridsed nitrogen is present in:

Discussion

2869.	a 2% solution of cellulose acetate in acetone shows an osmotic rise of 32.3 mm at 300 K against pure acetone. the density of acetone is 0.8 g/cc. find the relative molar mass of the polymer(take R=0.08)
Answer» a 2% solution of cellulose acetate in acetone shows an osmotic rise of 32.3 mm at 300 K against pure acetone. the density of acetone is 0.8 g/cc. find the relative molar mass of the polymer(take R=0.08)

Discussion

2870.	Which of the following is a Sandmeyer reaction?
Answer» Which of the following is a Sandmeyer reaction?

Discussion

2871.	Most stable radical among the following is(1) CH3-CH2.(2) F-CH2-CH2.(3)(F)2-CH-CH2. (4) (F)3-C-CH2
Answer» Most stable radical among the following is(1) CH3-CH2.(2) F-CH2-CH2.(3)(F)2-CH-CH2. (4) (F)3-C-CH2

Discussion

2872.	How many minimum no of carbons are needed for an optically active ether? i)2 ii)3 iii)4 iv)
Answer» How many minimum no of carbons are needed for an optically active ether? i)2 ii)3 iii)4 iv)

Discussion

2873.	38 Which of the following reagents would not be a good choicefor reducing anaryl nitro compound to an amine? (1) H2(excess)/Pt (2) LiAlH4 in ether. (3) Fe and HCl (4) Sn and HCl
Answer» 38 Which of the following reagents would not be a good choicefor reducing anaryl nitro compound to an amine? (1) H2(excess)/Pt (2) LiAlH4 in ether. (3) Fe and HCl (4) Sn and HCl

Discussion

2874.	What is correct order of stability of the following carbocations:A. +CH2−CH3B. +CH2−CH2ClC. +CH2−CHCl2D. +CH2−CCl3
Answer» What is correct order of stability of the following carbocations: A. $+ C H_{2} - C H_{3}$ B. $+ C H_{2} - C H_{2} C l$ C. $+ C H_{2} - C H C l_{2}$ D. $+ C H_{2} - C C l_{3}$

Discussion

2875.	35.The concentration of glucose (in g/litre) solution which is isotonic with a solution of a urea containing 6g per litre will be.
Answer» 35.The concentration of glucose (in g/litre) solution which is isotonic with a solution of a urea containing 6g per litre will be.

Discussion

2876.	Abeam of helium atoms moves with a velocity of 2 into 10 to the power 4 metre per second find the wavelength of particle constituting the beam
Answer» Abeam of helium atoms moves with a velocity of 2 into 10 to the power 4 metre per second find the wavelength of particle constituting the beam

Discussion

2877.	If three complex numbers are in ap then they lie on
Answer» If three complex numbers are in ap then they lie on

Discussion

2878.	Number of amphoteric compounds among the following is ______.BeOBaOBe(OH)2Sr(OH)2
Answer» Number of amphoteric compounds among the following is ______. $B e O B a O B e {(O H)}_{2} S r {(O H)}_{2}$

Discussion

2879.	What is the mass of the precipitate formed when 60 mL of 15.3% solution of AgNO3 is mixed with 60 mL of 6.2% of NaCl solution?
Answer» What is the mass of the precipitate formed when 60 mL of 15.3% solution of AgNO3 is mixed with 60 mL of 6.2% of NaCl solution?

Discussion

2880.	how many stereoisomers are there for 1-ethyl-3-methylcyclohexane?
Answer» how many stereoisomers are there for 1-ethyl-3-methylcyclohexane?

Discussion

2881.	What are Alkali
Answer» What are Alkali

Discussion

2882.	How many grams of methane are required to produce 22 g CO2 by combustion? CH4+2O2→CO2+2H2O
Answer» How many grams of methane are required to produce $22 g C O_{2}$ by combustion? $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

Discussion

2883.	35.What amount of electron ,proton and neutron are present in chlorine
Answer» 35.What amount of electron ,proton and neutron are present in chlorine

Discussion

2884.	The standard molar entropy of H2O (1) is 70 JK−1 mol−1. Will the standard molar entropy of H2O(s) be more, or less than 70 JK−1 mol−1?
Answer» The standard molar entropy of $H_{2} O$ (1) is 70 $J K^{- 1}$ $m o l^{- 1}$ . Will the standard molar entropy of $H_{2} O$ (s) be more, or less than 70 $J K^{- 1}$ $m o l^{- 1}$ ?

Discussion

2885.	Why does R3P=O exist but R3N=O does not (R = alkyl group)?
Answer» Why does R₃P=O exist but R₃N=O does not (R = alkyl group)?

Discussion

2886.	In the above reaction product ′P′ is:
Answer» In the above reaction product $^{'} P^{'}$ is:

Discussion

2887.	Using Bohr's postulates of the atomic model, derive the expression for radius of nth electron orbit. Hence obtain the expression for Bohr's radius.
Answer» Using Bohr's postulates of the atomic model, derive the expression for radius of nth electron orbit. Hence obtain the expression for Bohr's radius.

Discussion

2888.

Lis la publicité et remplis la grille ci-dessous : Pays proposé Viêtnam Nom de voyage Lieu visité Durée de voyage Nombre de repas Prix

Answer» Lis la publicité et remplis la grille ci-dessous :

Pays proposé	Viêtnam
Nom de voyage
Lieu visité
Durée de voyage
Nombre de repas
Prix

Discussion

2889.	A 3 L container has 4 atm pressure at 27 ∘C. If 2 L of gas at 2 atm is added to this container at same temperature, then what will be the new pressure in the container?
Answer» A $3 L$ container has $4 atm$ pressure at $27^{\circ} C$ . If $2 L$ of gas at $2 atm$ is added to this container at same temperature, then what will be the new pressure in the container?

Discussion

2890.	Which of the following compound of nitrogen shows disproportionation reaction in acid solution?
Answer» Which of the following compound of nitrogen shows disproportionation reaction in acid solution?

Discussion

2891.	What is viscosity ?explain
Answer» What is viscosity ?explain

Discussion

2892.	The unit of equivalent conductivity is [CPMT 1999; BCECE 2005]
Answer» The unit of equivalent conductivity is [CPMT 1999; BCECE 2005]

2892.

The unit of equivalent conductivity is [CPMT 1999; BCECE 2005]

Answer»

The unit of equivalent conductivity is

[CPMT 1999; BCECE 2005]

Discussion

2893.	40. 1-phenylpropyne +h2so4+hgso4 mechnism
Answer» 40. 1-phenylpropyne +h2so4+hgso4 mechnism

Discussion

2894.	Atom is made up of electron, proton, and neutron. Then electron, proton, and neutron are made up of?
Answer» Atom is made up of electron, proton, and neutron. Then electron, proton, and neutron are made up of?

Discussion

2895.	Why are Mn2+compounds more stable than Fe2+ towards oxidation to their +3 state?
Answer» Why are Mn²⁺compounds more stable than Fe²⁺ towards oxidation to their +3 state?

Discussion

2896.	94 0.9 g Al reacts with dil. HCl to give H2. The volume of H2 evolved at STP is
Answer» 94 0.9 g Al reacts with dil. HCl to give H2. The volume of H2 evolved at STP is

Discussion

2897.	Excess of which of the followings in drinking water is responsible for disease known as ‘Blue Baby Syndrome’ or ‘Methemoglobinemia’?
Answer» Excess of which of the followings in drinking water is responsible for disease known as ‘Blue Baby Syndrome’ or ‘Methemoglobinemia’?

Discussion

2898.	A20.0 mL solution containing 0.2 g impure H2O2 reacts completely with 0.316 g of KMnO4 in acid solution. The purity of H2O2 (in%) is (Nearest integer) (mol.wt.ofH2O2=34mole.wt.of.KMnO4=158)
Answer» $A 20.0 m L$ solution containing $0.2 g$ impure $H_{2} O_{2}$ reacts completely with $0.316 g$ of $K M n O_{4}$ in acid solution. The purity of $H_{2} O_{2}$ (in%) is (Nearest integer) $(mol.wt.of H_{2} O_{2} = 34 mole.wt.of.KM n O_{4} = 158)$

Discussion

2899.	Arrange OHCH2COOH (I), HOCH2CH2COOH (II) and CH3COOH (III) in order of their acidic strength.
Answer» Arrange $O H C H_{2} C O O H (I),$ $H O C H_{2} C H_{2} C O O H (I I)$ and $C H_{3} C O O H (I I I)$ in order of their acidic strength.

Discussion

2900.	9. What is mean by isotope
Answer» 9. What is mean by isotope

Discussion

Explore topic-wise InterviewSolutions in .

47.Elevation of Boiling Point of 1M KCl solution is double than that of 1M sugar solution. Why??

36.what is formula of butanol how to find formula of butanol

At 1990 K and 1 atm pressure, there are equal number of Cl2 molecules and Cl atoms in the reaction mixture. The value of Kp for the reaction Cl2(g)⇌2Cl(g) under the above condition is x×10−1. The value of x is ______.(rounded off to the nearest integer)

Potential difference across a cell is V and its emf is E. Which of the following is correct?(1) E=V(2)E>V(3)E

The correct order of +M effect of ′N′ containing functional group on benzene ring, amongst the given compounds is (I) (II) (III) (IV)

Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: K3[Co(C2O4)3] (NH4)2[CoF4] Cis−[Cr(en)2Cl2]Cl [Mn(H2O)6]SO4

Identify the trans isomer of [Pt(NH3)2Cl2] from the following

Find the distance of tetrahedral void from the corner of a cube for a ccp crystal lattice.Given:The edge length of the unit cell is 20√3 pm

What is a nuclear reactor? Name the first nuclear reactor of India. Also, mention the date on which it went critical.

An aqueous solution containing 58.8% w/v ofH2S04 has density 1.388 g/mL. The molality with respect to H2S04 of the solution is

The element having highest ionisation potential is:

Writethe equations for the preparation of 1−iodobutane from(i) 1-butanol (ii) 1-chlorobutane (iii) but-1-ene.

21. How to derive formula for the number of regions into which a set of n coplanar lines in general position divide the plane.

n factor of fes2 in the below reaction:- fes2 + o2 ----> fe2o3 + so2.

What do you mean by a saturated solution?

The reducing agent in the following reaction is:Pb(s) + Cu2+(aq) → Pb2+ (aq) + Cu(s)

The number of waves in the third orbit of hydrogen atom is?

sp3- hybridsed nitrogen is present in:

a 2% solution of cellulose acetate in acetone shows an osmotic rise of 32.3 mm at 300 K against pure acetone. the density of acetone is 0.8 g/cc. find the relative molar mass of the polymer(take R=0.08)

Which of the following is a Sandmeyer reaction?

Most stable radical among the following is(1) CH3-CH2.(2) F-CH2-CH2.(3)(F)2-CH-CH2. (4) (F)3-C-CH2

How many minimum no of carbons are needed for an optically active ether? i)2 ii)3 iii)4 iv)

38 Which of the following reagents would not be a good choicefor reducing anaryl nitro compound to an amine? (1) H2(excess)/Pt (2) LiAlH4 in ether. (3) Fe and HCl (4) Sn and HCl

What is correct order of stability of the following carbocations:A. +CH2−CH3B. +CH2−CH2ClC. +CH2−CHCl2D. +CH2−CCl3

35.The concentration of glucose (in g/litre) solution which is isotonic with a solution of a urea containing 6g per litre will be.

Abeam of helium atoms moves with a velocity of 2 into 10 to the power 4 metre per second find the wavelength of particle constituting the beam

If three complex numbers are in ap then they lie on

Number of amphoteric compounds among the following is ______.BeOBaOBe(OH)2Sr(OH)2

What is the mass of the precipitate formed when 60 mL of 15.3% solution of AgNO3 is mixed with 60 mL of 6.2% of NaCl solution?

how many stereoisomers are there for 1-ethyl-3-methylcyclohexane?

What are Alkali

How many grams of methane are required to produce 22 g CO2 by combustion? CH4+2O2→CO2+2H2O

35.What amount of electron ,proton and neutron are present in chlorine

The standard molar entropy of H2O (1) is 70 JK−1 mol−1. Will the standard molar entropy of H2O(s) be more, or less than 70 JK−1 mol−1?

Why does R3P=O exist but R3N=O does not (R = alkyl group)?

In the above reaction product ′P′ is:

Using Bohr's postulates of the atomic model, derive the expression for radius of nth electron orbit. Hence obtain the expression for Bohr's radius.

Lis la publicité et remplis la grille ci-dessous : Pays proposé Viêtnam Nom de voyage Lieu visité Durée de voyage Nombre de repas Prix

A 3 L container has 4 atm pressure at 27 ∘C. If 2 L of gas at 2 atm is added to this container at same temperature, then what will be the new pressure in the container?

Which of the following compound of nitrogen shows disproportionation reaction in acid solution?

What is viscosity ?explain

The unit of equivalent conductivity is [CPMT 1999; BCECE 2005]

40. 1-phenylpropyne +h2so4+hgso4 mechnism

Atom is made up of electron, proton, and neutron. Then electron, proton, and neutron are made up of?

Why are Mn2+compounds more stable than Fe2+ towards oxidation to their +3 state?

94 0.9 g Al reacts with dil. HCl to give H2. The volume of H2 evolved at STP is

Excess of which of the followings in drinking water is responsible for disease known as ‘Blue Baby Syndrome’ or ‘Methemoglobinemia’?

A20.0 mL solution containing 0.2 g impure H2O2 reacts completely with 0.316 g of KMnO4 in acid solution. The purity of H2O2 (in%) is (Nearest integer) (mol.wt.ofH2O2=34mole.wt.of.KMnO4=158)

Arrange OHCH2COOH (I), HOCH2CH2COOH (II) and CH3COOH (III) in order of their acidic strength.

9. What is mean by isotope