46295 + Interview Questions in Chemistry

1.	The bond angle in PH3 would be expected to be close to
Answer» The bond angle in $P H_{3}$ would be expected to be close to

Discussion

2.	Product for reaction- Product obtained when phenylisocyanide is reacted with H2 , Pt and H2SO4
Answer» Product for reaction- Product obtained when phenylisocyanide is reacted withH₂, Pt and H₂SO₄

Discussion

3.	Why Bromobenzene don't react with aq.NaOH ?
Answer» Why Bromobenzene don't react with aq.NaOH ?

Discussion

4.	In the reaction, As2S3+xNO−3+yH+⟶2AsSO4+zNO2+aS+2H2O Find the coeffieicnts x , y, z and a (Respectively)
Answer» In the reaction, $A s_{2} S_{3} + x N O_{3}^{-} + y H^{+} ⟶ 2 A s S O_{4} + z N O_{2} + a S + 2 H_{2} O$ Find the coeffieicnts x , y, z and a (Respectively)

Discussion

5.	Choose the correct option(s) that give(s) an aromatic compound as the major product.
Answer» Choose the correct option(s) that give(s) an aromatic compound as the major product.

Discussion

6.	The ionization enthalpies of lithium and sodium are 520 kJ/mole and 495 kJ/mole respectively. The energies required to convert all the atoms present in 7 mg of lithium vapours and 23 mg of sodium vapours to their respective gaseous cations respectively are?
Answer» The ionization enthalpies of lithium and sodium are 520 kJ/mole and 495 kJ/mole respectively. The energies required to convert all the atoms present in 7 mg of lithium vapours and 23 mg of sodium vapours to their respective gaseous cations respectively are?

Discussion

7.	A sample has 0.1 moles of H2 gas. If 3.011×1023 molecules are added to it, what is the final number of moles of H2 in the sample?
Answer» A sample has 0.1 moles of $H_{2}$ gas. If $3.011 \times 10^{23}$ molecules are added to it, what is the final number of moles of $H_{2}$ in the sample?

Discussion

8.	The carbide which gives propyne on hydrolysis is :
Answer» The carbide which gives propyne on hydrolysis is :

Discussion

9.	Dimer formation can take place with
Answer» Dimer formation can take place with

Discussion

10.	then x is equal to
Answer» then x is equal to

Discussion

11.	H2(g)+I2(g)⇌2HI(g) When 46g of I2and 1g of H2are heated at equilibrium at 450∘C, the equilibrium mixture contained 1.9g of I2. How many moles of I2 and HI are present at equilibrium.
Answer» $H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)$ When 46g of I2and 1g of H2are heated at equilibrium at $450^{\circ} C$ , the equilibrium mixture contained 1.9g of I2. How many moles of $I_{2}$ and HI are present at equilibrium.

11.

H2(g)+I2(g)⇌2HI(g) When 46g of I2and 1g of H2are heated at equilibrium at 450∘C, the equilibrium mixture contained 1.9g of I2. How many moles of I2 and HI are present at equilibrium.

Answer»

$H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)$

When 46g of I2and 1g of H2are heated at equilibrium at $450^{\circ} C$ , the equilibrium mixture contained 1.9g of I2.

How many moles of $I_{2}$ and HI are present at equilibrium.

Discussion

12.	The ionic radii (in A∘ of N3,O2−and F− ) respectively are
Answer» The ionic radii (in $A^{\circ}$ of $N^{3}, O^{2 -} a n d F^{-}$ ) respectively are

Discussion

13.	Which of the following elements does not form hydride by direct heating with dihydrogen? (a) Be (b) Mg (c) Sr (d) Ba
Answer» Which of the following elements does not form hydride by direct heating with dihydrogen? (a) Be (b) Mg (c) Sr (d) Ba

Discussion

14.	H3C−CH2−C\|CH3=CH2+HBr→A A (predominantly) is
Answer» $H_{3} C - C H_{2} - C \| C H_{3} = C H_{2} + H B r \to A$ A (predominantly) is

Discussion

15.	In the complex [Ni(H2O)2(NH3)4]2+ the no. of unpaired electrons is
Answer» In the complex [Ni(H₂O)₂(NH₃)₄]²⁺the no. of unpaired electrons is

Discussion

16.	What is the relation between ΔH and ΔE in this reaction? CH4(g)+2O2(g)⇌CO2(g)+2H2O(l)
Answer» What is the relation between $Δ H$ and $Δ E$ in this reaction? $C H_{4 (g)} + 2 O_{2 (g)} ⇌ C O_{2 (g)} + 2 H_{2} O_{(l)}$

Discussion

17.	5.6 l of gas at N.T.P. are found to have a mass of 11g.Molecular mass of gas is?( need the answer in detailed explanation)
Answer» 5.6 l of gas at N.T.P. are found to have a mass of 11g.Molecular mass of gas is?( need the answer in detailed explanation)

Discussion

18.	6)Among the following ions, the overlapping could be present in
Answer» 6)Among the following ions, the overlapping could be present in

Discussion

19.	Layer of Atmosphere possessing ozone is-
Answer» Layer of Atmosphere possessing ozone is-

Discussion

20.	How many rings are present in [MEDTA]+n ?
Answer» How many rings are present in ${[MEDTA]}^{+ n}$ ?

Discussion

21.	Which of the following statements is correct? (a) Some tranquilizers function by inhibiting the enzymes which catalyse the degradation of noradrenaline (b) Tranquilizers are narcotic drugs (c) Tranquilizers are chemical compounds that do not affect the message transfer from nerve to receptor (d) Tranquilizers are chemical compounds that can relieve Pain and fever
Answer» Which of the following statements is correct? (a) Some tranquilizers function by inhibiting the enzymes which catalyse the degradation of noradrenaline (b) Tranquilizers are narcotic drugs (c) Tranquilizers are chemical compounds that do not affect the message transfer from nerve to receptor (d) Tranquilizers are chemical compounds that can relieve Pain and fever

Discussion

22.	Which of the following is not a semisynthetic polymer? (a) cis-polyisoprene (b) Cellulose nitrate (c) Cellulose acetate (d) Vulcanised rubber
Answer» Which of the following is not a semisynthetic polymer? (a) cis-polyisoprene (b) Cellulose nitrate (c) Cellulose acetate (d) Vulcanised rubber

22.

Which of the following is not a semisynthetic polymer? (a) cis-polyisoprene (b) Cellulose nitrate (c) Cellulose acetate (d) Vulcanised rubber

Answer»

Which of the following is not a semisynthetic polymer?

(a) cis-polyisoprene

(b) Cellulose nitrate

(c) Cellulose acetate

(d) Vulcanised rubber

Discussion

23.	We found the velocity of an electron in the hydrogen atom. But what is the general expression of velocity of an electron in a hydrogen-like atom of atomic number Z? Challenge: try guessing from the options, without actually solving.
Answer» We found the velocity of an electron in the hydrogen atom. But what is the general expression of velocity of an electron in a hydrogen-like atom of atomic number Z? Challenge: try guessing from the options, without actually solving.

Discussion

24.	During decomposition of an activated complex (a)energy is always released (b) energy is always absorbed (c) energy does not change (d) reactants may be formed
Answer» During decomposition of an activated complex (a)energy is always released (b) energy is always absorbed (c) energy does not change (d) reactants may be formed

Discussion

25.	In terms of Charles' law explain why –273∘C is the lowest possible temperature.
Answer» In terms of Charles' law explain why $- 273^{\circ} C$ is the lowest possible temperature.

Discussion

26.	What is the work which could be obtained from an isothermal reversible expansion of 1 mol of Cl2 from 1 dm3 to 50 dm3 at 273 K using ideal gas behaviour (Given log5=0.693)
Answer» What is the work which could be obtained from an isothermal reversible expansion of $1 m o l$ of $C l_{2}$ from 1 $d m^{3}$ to 50 $d m^{3}$ at $273 K$ using ideal gas behaviour (Given $l o g 5 = 0.693$ )

Discussion

27.	Which of the following statements are correct? (a) Cationic detergents have germicidal properties (b) Bacteria can degrade the detergents containing highly branched chains (c) Some synthetic detergents can give foam even in ice cold water (d) Synthetic detergents are not soaps
Answer» Which of the following statements are correct? (a) Cationic detergents have germicidal properties (b) Bacteria can degrade the detergents containing highly branched chains (c) Some synthetic detergents can give foam even in ice cold water (d) Synthetic detergents are not soaps

Discussion

28.	If the degree of dissociation of water at 70oC is 1.28×10−8. Then what is the ionic product of water at this temperature?
Answer» If the degree of dissociation of water at $70^{o} C$ is $1.28 \times 10^{- 8}$ . Then what is the ionic product of water at this temperature?

Discussion

29.	The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is
Answer» The number of moles of $K M n O_{4}$ reduced by one mole of KI in alkaline medium is

Discussion

30.	The intensity of sound from a point source is 1.0×10−8Wm−2 at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?
Answer» The intensity of sound from a point source is $1.0 \times 10^{- 8} W m^{- 2}$ at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?

Discussion

31.	Benzyl chloride reacts with chlorobenzene in the presence of dry ether to give
Answer» Benzyl chloride reacts with chlorobenzene in the presence of dry ether to give

Discussion

32.	A 5% solution of canesugar (mol. wt. = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is
Answer» A 5% solution of canesugar (mol. wt. = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is

Discussion

33.	In the equation, Rate=e-Ea/RT, Ea is known as the
Answer» In the equation, Rate=e^-Ea/RT, E_a is known as the

Discussion

34.	Phenomenon of existence of two or more substances having the same molecular formulae but different structural or special arrangements is:
Answer» Phenomenon of existence of two or more substances having the same molecular formulae but different structural or special arrangements is:

Discussion

35.	Which of the following electronic configurations is impossible?
Answer» Which of the following electronic configurations is impossible?

Discussion

36.	What is anomalous nature of lithium?
Answer» What is anomalous nature of lithium?

Discussion

37.	Interaction energy associated with London force is
Answer» Interaction energy associated with London force is

Discussion

38.	Which of the following figures does not represent 1 mole of dioxygen gas at STP? (a) 16 g of gas (b) 22.4 L of gas (c) 6.022 ×1023 dioxygen molecules (d) 11.2 L of gas
Answer» Which of the following figures does not represent 1 mole of dioxygen gas at STP? (a) 16 g of gas (b) 22.4 L of gas (c) 6.022 $\times 10^{23}$ dioxygen molecules (d) 11.2 L of gas

38.

Which of the following figures does not represent 1 mole of dioxygen gas at STP? (a) 16 g of gas (b) 22.4 L of gas (c) 6.022 ×1023 dioxygen molecules (d) 11.2 L of gas

Answer»

Which of the following figures does not represent 1 mole of dioxygen gas at STP?

(a) 16 g of gas (b) 22.4 L of gas

(c) 6.022 $\times 10^{23}$ dioxygen molecules (d) 11.2 L of gas

Discussion

39.	Ag++NH3⇌[Ag(NH3)]+; K1=2000 [Ag(NH3)]++NH3⇌[Ag(NH3)2]+; K2=8000 then the formation constant of [Ag(NH3)2]+ is:
Answer» $A g^{+} + N H_{3} ⇌ [A g (N H_{3})]^{+}; K_{1} = 2000$ $[A g (N H_{3})]^{+} + N H_{3} ⇌ [A g (N H_{3})_{2}]^{+}; K_{2} = 8000$ then the formation constant of $[A g (N H_{3})_{2}]^{+}$ is:

Discussion

40.	A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.
Answer» A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

Discussion

41.	The oxy acid of phosphorus that forms polymers is
Answer» The oxy acid of phosphorus that forms polymers is

Discussion

42.	Which processes of Krebs cycle are associated with both decarboxylation and dehydrogenation?
Answer» Which processes of Krebs cycle are associated with both decarboxylation and dehydrogenation?

Discussion

43.

The concentration of R in the reaction R → P was measured as a function of time and the following data is obtained: [R](Molar) time(second) 1.0 0.0 0.75 0.05 0.40 0.12 0.10 0.18 The order of the reaction is ___

Answer»

The concentration of $R$ in the reaction $R \to P$ was measured as a function of time and the following data is obtained:

[R](Molar)	time(second)
1.0	0.0
0.75	0.05
0.40	0.12
0.10	0.18

The order of the reaction is

___

Discussion

44.	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

45.	The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively given by
Answer» The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively given by

45.

The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively given by

Answer»

The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively given by

Discussion

46.	The given graph/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is (are) correct?
Answer» The given graph/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is (are) correct?

Discussion

47.	The increasing order (lowest first) for the values of e/m (charge/mass) for
Answer» The increasing order (lowest first) for the values of e/m (charge/mass) for

Discussion

48.	In a single slit diffraction experiment, the width of the slit is made double its original width. Then, the central maximum of the diffraction pattern will become,
Answer» In a single slit diffraction experiment, the width of the slit is made double its original width. Then, the central maximum of the diffraction pattern will become,

Discussion

49.	The number of moles present in 24.5 gms of H2SO4 is
Answer» The number of moles present in $24.5 g m s$ of $H_{2} S O_{4}$ is

Discussion

50.

Carbon tetrachloride has no net dipole moment because of

Answer»

Carbon tetrachloride has no net dipole moment because of

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The bond angle in PH3 would be expected to be close to

Product for reaction- Product obtained when phenylisocyanide is reacted with H2 , Pt and H2SO​​​​​​4

Why Bromobenzene don't react with aq.NaOH ?

In the reaction, As2S3+xNO−3+yH+⟶2AsSO4+zNO2+aS+2H2O Find the coeffieicnts x , y, z and a (Respectively)

Choose the correct option(s) that give(s) an aromatic compound as the major product.

The ionization enthalpies of lithium and sodium are 520 kJ/mole and 495 kJ/mole respectively. The energies required to convert all the atoms present in 7 mg of lithium vapours and 23 mg of sodium vapours to their respective gaseous cations respectively are?

A sample has 0.1 moles of H2 gas. If 3.011×1023 molecules are added to it, what is the final number of moles of H2 in the sample?

The carbide which gives propyne on hydrolysis is :

Dimer formation can take place with

then x is equal to

H2(g)+I2(g)⇌2HI(g) When 46g of I2and 1g of H2are heated at equilibrium at 450∘C, the equilibrium mixture contained 1.9g of I2. How many moles of I2 and HI are present at equilibrium.

The ionic radii (in A∘ of N3,O2−and F− ) respectively are

Which of the following elements does not form hydride by direct heating with dihydrogen? (a) Be (b) Mg (c) Sr (d) Ba

H3C−CH2−C|CH3=CH2+HBr→A A (predominantly) is

In the complex [Ni(H2O)2(NH3)4]2+ the no. of unpaired electrons is

What is the relation between ΔH and ΔE in this reaction? CH4(g)+2O2(g)⇌CO2(g)+2H2O(l)

5.6 l of gas at N.T.P. are found to have a mass of 11g.Molecular mass of gas is?( need the answer in detailed explanation)

6)Among the following ions, the overlapping could be present in

Layer of Atmosphere possessing ozone is-

How many rings are present in [MEDTA]+n ?

Which of the following is not a semisynthetic polymer? (a) cis-polyisoprene (b) Cellulose nitrate (c) Cellulose acetate (d) Vulcanised rubber

We found the velocity of an electron in the hydrogen atom. But what is the general expression of velocity of an electron in a hydrogen-like atom of atomic number Z? Challenge: try guessing from the options, without actually solving.

During decomposition of an activated complex (a)energy is always released (b) energy is always absorbed (c) energy does not change (d) reactants may be formed

In terms of Charles' law explain why –273∘C is the lowest possible temperature.

What is the work which could be obtained from an isothermal reversible expansion of 1 mol of Cl2 from 1 dm3 to 50 dm3 at 273 K using ideal gas behaviour (Given log5=0.693)

Which of the following statements are correct? (a) Cationic detergents have germicidal properties (b) Bacteria can degrade the detergents containing highly branched chains (c) Some synthetic detergents can give foam even in ice cold water (d) Synthetic detergents are not soaps

If the degree of dissociation of water at 70oC is 1.28×10−8. Then what is the ionic product of water at this temperature?

The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is

The intensity of sound from a point source is 1.0×10−8Wm−2 at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?

Benzyl chloride reacts with chlorobenzene in the presence of dry ether to give

A 5% solution of canesugar (mol. wt. = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is

In the equation, Rate=e-Ea/RT, Ea is known as the

Phenomenon of existence of two or more substances having the same molecular formulae but different structural or special arrangements is:

Which of the following electronic configurations is impossible?

What is anomalous nature of lithium?

Interaction energy associated with London force is

Which of the following figures does not represent 1 mole of dioxygen gas at STP? (a) 16 g of gas (b) 22.4 L of gas (c) 6.022 ×1023 dioxygen molecules (d) 11.2 L of gas

Ag++NH3⇌[Ag(NH3)]+; K1=2000 [Ag(NH3)]++NH3⇌[Ag(NH3)2]+; K2=8000 then the formation constant of [Ag(NH3)2]+ is:

A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

The oxy acid of phosphorus that forms polymers is

Which processes of Krebs cycle are associated with both decarboxylation and dehydrogenation?

The concentration of R in the reaction R → P was measured as a function of time and the following data is obtained: [R](Molar) time(second) 1.0 0.0 0.75 0.05 0.40 0.12 0.10 0.18 The order of the reaction is ___

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

The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively given by

The given graph/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is (are) correct?

The increasing order (lowest first) for the values of e/m (charge/mass) for

In a single slit diffraction experiment, the width of the slit is made double its original width. Then, the central maximum of the diffraction pattern will become,

The number of moles present in 24.5 gms of H2SO4 is

Carbon tetrachloride has no net dipole moment because of

Product for reaction- Product obtained when phenylisocyanide is reacted with H2 , Pt and H2SO4