46295 + Interview Questions in Chemistry

1.	Which of the following compound involves the formation of three centre two electrons bond?
Answer» Which of the following compound involves the formation of three centre two electrons bond?

Discussion

2.	The expansion of the algebraic identity (x+a)(x+b) is:
Answer» The expansion of the algebraic identity $(x + a) (x + b)$ is:

Discussion

3.	The strength of bonds formed by 2s - 2s, 2p - 2p and 2p - 2s overlap has the order:
Answer» The strength of bonds formed by 2s - 2s, 2p - 2p and 2p - 2s overlap has the order:

Discussion

4.	When there is breaking of bonds in such a way that the shared pair of electrons remains with one of the fragments it is termed as:
Answer» When there is breaking of bonds in such a way that the shared pair of electrons remains with one of the fragments it is termed as:

Discussion

5.	Negative deviation from ideal behaviour is due to fact that :
Answer» Negative deviation from ideal behaviour is due to fact that :

Discussion

6.	Valence bond theory explains:
Answer» Valence bond theory explains:

Discussion

7.	Which of the following is the best acceptor of proton ?
Answer» Which of the following is the best acceptor of proton ?

Discussion

8.	Molecular mass of volatile substance may be obtained by
Answer» Molecular mass of volatile substance may be obtained by

Discussion

9.	The orbital angular momentum of a p-electron is given as:
Answer» The orbital angular momentum of a p-electron is given as:

Discussion

10.	Pressure of 1 atm = ___________Pa
Answer» Pressure of 1 atm = ___________Pa

Discussion

11.	Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.
Answer» Consider the reaction of water with $F_{2}$ and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.

Discussion

12.	Which of the following shaded plane in fcc lattice contains arrangement of atom as shown by circles :
Answer» Which of the following shaded plane in fcc lattice contains arrangement of atom as shown by circles :

Discussion

13.	The correct order of metalic characters for the given elements is: B,Na,Al,K
Answer» The correct order of metalic characters for the given elements is: $B, N a, A l, K$

Discussion

14.	Statement 1: 0.1 M H3PO3(aq.) solution has normality equal to 0.3N when completely reacted with NaOH. Statement 2 : H3PO3 is a dibasic acid. Which of the above statement is correct?
Answer» Statement 1: 0.1 M $H_{3} P O_{3} (a q .)$ solution has normality equal to 0.3N when completely reacted with NaOH. Statement 2 : $H_{3} P O_{3}$ is a dibasic acid. Which of the above statement is correct?

Discussion

15.	The correct order of bond angles is:
Answer» The correct order of bond angles is:

Discussion

16.	How the metallic character of p-block elements changes as we move from top to bottom in a group?
Answer» How the metallic character of p-block elements changes as we move from top to bottom in a group?

Discussion

17.	Resonance hybrid is more stable than the resonating forms but the energy of the resonance hybrid is:
Answer» Resonance hybrid is more stable than the resonating forms but the energy of the resonance hybrid is:

Discussion

18.	Zeolite is used in
Answer» Zeolite is used in

Discussion

19.	Account for the following: (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.
Answer» Account for the following: (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.

Discussion

20.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

Discussion

21.	If the rate of reaction increases 27 times , when temperature is increased by 30K, then temperature coefficient of the reaction is
Answer» If the rate of reaction increases 27 times , when temperature is increased by 30K, then temperature coefficient of the reaction is

Discussion

22.	the main product is -
Answer» the main product is -

Discussion

23.	The hybridization of carbons labelled 3, 4 and 5 in HC1−C2−C3H=C4=C5H−C6H=C7H2 are?
Answer» The hybridization of carbons labelled 3, 4 and 5 in $H C^{1} - C^{2} - C^{3} H = C^{4} = C^{5} H - C^{6} H = C^{7} H_{2}$ are?

23.

The hybridization of carbons labelled 3, 4 and 5 in HC1−C2−C3H=C4=C5H−C6H=C7H2 are?

Answer»

The hybridization of carbons labelled 3, 4 and 5 in

$H C^{1} - C^{2} - C^{3} H = C^{4} = C^{5} H - C^{6} H = C^{7} H_{2}$ are?

Discussion

24.	Which of the following does not give white precipitate with ammoniacal AgNO3
Answer» Which of the following does not give white precipitate with ammoniacal AgNO₃

Discussion

25.	Least ionic compound among the following is
Answer» Least ionic compound among the following is

Discussion

26.	The dipole moments of the given molecules are such that
Answer» The dipole moments of the given molecules are such that

Discussion

27.	When CO2 is passed through water which of the following species will be present in water?
Answer» When $C O_{2}$ is passed through water which of the following species will be present in water?

Discussion

28.	Draw the intensity pattern for single slit diffraction and double slit interference. Hence, state two differences between interference and diffraction patterns.
Answer» Draw the intensity pattern for single slit diffraction and double slit interference. Hence, state two differences between interference and diffraction patterns.

Discussion

29.	In the future you synthesizes a new element. A neutral atom of the element, say 'X', has 4 electrons and 2 neutrons. How will you represent the nucleus of the element in your award winning paper?
Answer» In the future you synthesizes a new element. A neutral atom of the element, say 'X', has 4 electrons and 2 neutrons. How will you represent the nucleus of the element in your award winning paper?

Discussion

30.	Which of the following is not essential amino acid?
Answer» Which of the following is not essential amino acid?

Discussion

31.	Which of the following solutions will have the highest boiling point?
Answer» Which of the following solutions will have the highest boiling point?

Discussion

32.	In Gattermann Koch reaction, the product found is : +CO+DClAlCl3−−−→ ___
Answer» In Gattermann Koch reaction, the product found is : $+ C O + D C l A l C l_{3} - -- \to$ ___

Discussion

33.	A cylinder contains 0.9 moles of benzene vapour and 0.1 moles of toluene vapour at 50 oC . The pure vapour pressure of benzene liquid and the pure vapour pressure of toluene liquid at 50 oC are 600 torr and 200 torr respectively. What is the mole fraction of liquid benzene in the solution?
Answer» A cylinder contains $0.9$ moles of benzene vapour and $0.1$ moles of toluene vapour at $50^{o} C$ . The pure vapour pressure of benzene liquid and the pure vapour pressure of toluene liquid at $50^{o}$ C are 600 torr and 200 torr respectively. What is the mole fraction of liquid benzene in the solution?

Discussion

34.	Air at sea level is dense. This is a practical application of
Answer» Air at sea level is dense. This is a practical application of

Discussion

35.	Expalin why [Fe(H2O)6]3+ has magnetic moment value of 5.92 BM whereas [Fe(CN)6]3− has a value of only 1.74 BM?
Answer» Expalin why $[F e (H_{2} O)_{6}]^{3 +}$ has magnetic moment value of 5.92 BM whereas $[F e (C N)_{6}]^{3 -}$ has a value of only 1.74 BM?

Discussion

36.	Which is Raschig’s method?
Answer» Which is Raschig’s method?

Discussion

37.	The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's constant =6.022×1023)
Answer» The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's constant $= 6.022 \times 10^{23}$ )

Discussion

38.	The partial hydrolysis of XeF4 at low temperature gives
Answer» The partial hydrolysis of $X e F_{4}$ at low temperature gives

Discussion

39.	(i) Ti is purified by Van Arkel method. In it, the formula of metal iodide vapour formed is TiIp. (ii) The oxidation state of Fe in Fool's gold is q. (iii) In the test of Ni2+, a rosy red ppt. of [Ni(dmg)2] is formed. In it, r five membered rings and s six membered H-bonding rings are formed. Then, the value of p+q+r+s2 is:
Answer» (i) $T i$ is purified by Van Arkel method. In it, the formula of metal iodide vapour formed is $T i I_{p}$ . (ii) The oxidation state of $F e$ in Fool's gold is q. (iii) In the test of $N i^{2 +}$ , a rosy red ppt. of $[N i (d m g)_{2}]$ is formed. In it, r five membered rings and s six membered H-bonding rings are formed. Then, the value of $\frac{p + q + r + s}{2}$ is:

Discussion

40.	Which of the following is most reactive for SN2 reaction ?
Answer» Which of the following is most reactive for $S_{N} 2$ reaction ?

Discussion

41.	3KClO3+3H2SO4→3KHSO4+HClO4+2ClO2+H2O Equivalent weight of KClO3 is
Answer» $3 K C l O_{3} + 3 H_{2} S O_{4} \to 3 K H S O_{4} + H C l O_{4} + 2 C l O_{2} + H_{2} O$ Equivalent weight of $K C l O_{3}$ is

Discussion

42.	Given that: (i) C(s)+O2(g)→CO2(g);ΔH∘=−xkJ (ii) 2CO(g)+O2(g)→2CO2(g);ΔH∘=−ykJ. The enthalpy of formation of carbon monoxide will be :
Answer» Given that: (i) $C (s) + O_{2} (g) \to C O_{2} (g); Δ H^{\circ} = - x k J$ (ii) $2 C O (g) + O_{2} (g) \to 2 C O_{2} (g); Δ H^{\circ} = - y k J$ . The enthalpy of formation of carbon monoxide will be :

Discussion

43.	Which is the correct increasing order of boiling points of the following compounds? 1-bromoethane, 1-bromopropane , 1-bromobutane, Bromobenzene (a) Bromobenzene < 1-bromobutane < 1-bromopropane < 1-bromoethane (b) Bromobenzene < 1-bromoethane < 1-bromopropane < 1-bromobutane (c) 1- bromopropane <1-bromobutane < 1- bromoethane < Bromobenzene (d) 1-bromoethane < 1-bromopropane < 1-bromobutane < Bromobenze
Answer» Which is the correct increasing order of boiling points of the following compounds? 1-bromoethane, 1-bromopropane , 1-bromobutane, Bromobenzene (a) Bromobenzene < 1-bromobutane < 1-bromopropane < 1-bromoethane (b) Bromobenzene < 1-bromoethane < 1-bromopropane < 1-bromobutane (c) 1- bromopropane <1-bromobutane < 1- bromoethane < Bromobenzene (d) 1-bromoethane < 1-bromopropane < 1-bromobutane < Bromobenze

43.

Which is the correct increasing order of boiling points of the following compounds? 1-bromoethane, 1-bromopropane , 1-bromobutane, Bromobenzene (a) Bromobenzene < 1-bromobutane < 1-bromopropane < 1-bromoethane (b) Bromobenzene < 1-bromoethane < 1-bromopropane < 1-bromobutane (c) 1- bromopropane <1-bromobutane < 1- bromoethane < Bromobenzene (d) 1-bromoethane < 1-bromopropane < 1-bromobutane < Bromobenze

Answer»

Which is the correct increasing order of boiling points of the following compounds?

1-bromoethane, 1-bromopropane , 1-bromobutane, Bromobenzene

(a) Bromobenzene < 1-bromobutane < 1-bromopropane < 1-bromoethane

(b) Bromobenzene < 1-bromoethane < 1-bromopropane < 1-bromobutane

(c) 1- bromopropane <1-bromobutane < 1- bromoethane < Bromobenzene

(d) 1-bromoethane < 1-bromopropane < 1-bromobutane < Bromobenze

Discussion

44.	A certain salt X, gives the following results. (i) Its aqueous solution is alkaline to litmus. (ii) It swells up to a glassy material Y on strong heating. (iii)When conc. H2SO4 is added to a hot solution of X, white crystal of an acid Z separates out. Write equations for all the above reactions and identify X, Y and Z.
Answer» A certain salt X, gives the following results. (i) Its aqueous solution is alkaline to litmus. (ii) It swells up to a glassy material Y on strong heating. (iii)When conc. $H_{2} S O_{4}$ is added to a hot solution of X, white crystal of an acid Z separates out. Write equations for all the above reactions and identify X, Y and Z.

44.

A certain salt X, gives the following results. (i) Its aqueous solution is alkaline to litmus. (ii) It swells up to a glassy material Y on strong heating. (iii)When conc. H2SO4 is added to a hot solution of X, white crystal of an acid Z separates out. Write equations for all the above reactions and identify X, Y and Z.

Answer»

A certain salt X, gives the following results.

(i) Its aqueous solution is alkaline to litmus.

(ii) It swells up to a glassy material Y on strong heating.

(iii)When conc. $H_{2} S O_{4}$ is added to a hot solution of X, white crystal of an acid Z separates out.

Write equations for all the above reactions and identify X, Y and Z.

Discussion

45.	Which of the following compounds has centre of symmetry?
Answer» Which of the following compounds has centre of symmetry?

Discussion

46.	The freezing point (in ∘ C) of solution containing 0.1g of K3[Fe(CN)6] (mol.wt. 329) in 100g of water (Kf=1.86Kkgmol−1) is
Answer» The freezing point (in $^{\circ}$ C) of solution containing 0.1g of $K_{3} [F e (C N)_{6}]$ (mol.wt. 329) in 100g of water ( $K_{f} = 1.86 K k g m o l^{- 1}$ ) is

Discussion

47.	An electron of a stationary hydrogen atom passes from the 5th energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be:
Answer» An electron of a stationary hydrogen atom passes from the $5^{t h}$ energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be:

Discussion

48.	What is the shape of Fe(CO)5 molecule and which of the following d - orbitals involved in hybridization?
Answer» What is the shape of $F e (C O)_{5}$ molecule and which of the following d - orbitals involved in hybridization?

Discussion

49.	What is meant by the following terms ? Give an example of the reaction in each case. Cyanohydrin Acetal Semicarbazone Aldol Hemiacetal Oxime Ketal Imine 2, 4 - DNP derivative Schiff's base
Answer» What is meant by the following terms ? Give an example of the reaction in each case. Cyanohydrin Acetal Semicarbazone Aldol Hemiacetal Oxime Ketal Imine 2, 4 - DNP derivative Schiff's base

49.

What is meant by the following terms ? Give an example of the reaction in each case. Cyanohydrin Acetal Semicarbazone Aldol Hemiacetal Oxime Ketal Imine 2, 4 - DNP derivative Schiff's base

Answer»

What is meant by the following terms ? Give an example of the reaction in each case.

Cyanohydrin

Acetal

Semicarbazone

Aldol

Hemiacetal

Oxime

Ketal

Imine

2, 4 - DNP derivative

Schiff's base

Discussion

50.	Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?
Answer» Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following compound involves the formation of three centre two electrons bond?

The expansion of the algebraic identity (x+a)(x+b) is:

The strength of bonds formed by 2s - 2s, 2p - 2p and 2p - 2s overlap has the order:

When there is breaking of bonds in such a way that the shared pair of electrons remains with one of the fragments it is termed as:

Negative deviation from ideal behaviour is due to fact that :

Valence bond theory explains:

Which of the following is the best acceptor of proton ?

Molecular mass of volatile substance may be obtained by

The orbital angular momentum of a p-electron is given as:

Pressure of 1 atm = ___________Pa

Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.

Which of the following shaded plane in fcc lattice contains arrangement of atom as shown by circles :

The correct order of metalic characters for the given elements is: B,Na,Al,K

Statement 1: 0.1 M H3PO3(aq.) solution has normality equal to 0.3N when completely reacted with NaOH. Statement 2 : H3PO3 is a dibasic acid. Which of the above statement is correct?

The correct order of bond angles is:

How the metallic character of p-block elements changes as we move from top to bottom in a group?

Resonance hybrid is more stable than the resonating forms but the energy of the resonance hybrid is:

Zeolite is used in

Account for the following: (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.

The major product of the following reaction is:

If the rate of reaction increases 27 times , when temperature is increased by 30K, then temperature coefficient of the reaction is

the main product is -

The hybridization of carbons labelled 3, 4 and 5 in HC1−C2−C3H=C4=C5H−C6H=C7H2 are?

Which of the following does not give white precipitate with ammoniacal AgNO3

Least ionic compound among the following is

The dipole moments of the given molecules are such that

When CO2 is passed through water which of the following species will be present in water?

Draw the intensity pattern for single slit diffraction and double slit interference. Hence, state two differences between interference and diffraction patterns.

In the future you synthesizes a new element. A neutral atom of the element, say 'X', has 4 electrons and 2 neutrons. How will you represent the nucleus of the element in your award winning paper?

Which of the following is not essential amino acid?

Which of the following solutions will have the highest boiling point?

In Gattermann Koch reaction, the product found is : +CO+DClAlCl3−−−→ ___

A cylinder contains 0.9 moles of benzene vapour and 0.1 moles of toluene vapour at 50 oC . The pure vapour pressure of benzene liquid and the pure vapour pressure of toluene liquid at 50 oC are 600 torr and 200 torr respectively. What is the mole fraction of liquid benzene in the solution?

Air at sea level is dense. This is a practical application of

Expalin why [Fe(H2O)6]3+ has magnetic moment value of 5.92 BM whereas [Fe(CN)6]3− has a value of only 1.74 BM?

Which is Raschig’s method?

The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's constant =6.022×1023)

The partial hydrolysis of XeF4 at low temperature gives

Which of the following is most reactive for SN2 reaction ?

3KClO3+3H2SO4→3KHSO4+HClO4+2ClO2+H2O Equivalent weight of KClO3 is

Given that: (i) C(s)+O2(g)→CO2(g);ΔH∘=−xkJ (ii) 2CO(g)+O2(g)→2CO2(g);ΔH∘=−ykJ. The enthalpy of formation of carbon monoxide will be :

Which of the following compounds has centre of symmetry?

The freezing point (in ∘ C) of solution containing 0.1g of K3[Fe(CN)6] (mol.wt. 329) in 100g of water (Kf=1.86Kkgmol−1) is

An electron of a stationary hydrogen atom passes from the 5th energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be:

What is the shape of Fe(CO)5 molecule and which of the following d - orbitals involved in hybridization?

What is meant by the following terms ? Give an example of the reaction in each case. Cyanohydrin Acetal Semicarbazone Aldol Hemiacetal Oxime Ketal Imine 2, 4 - DNP derivative Schiff's base

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?