46295 + Interview Questions in Chemistry

1.	The boiling point of solution containing 0.20 in gm of ether is 0.17 k (kelvin) heigher than that of pure ether. Calculate the molar mass of solute (Kb=2.16)
Answer» The boiling point of solution containing 0.20 in gm of ether is 0.17 k (kelvin) heigher than that of pure ether. Calculate the molar mass of solute (Kb=2.16)

Discussion

2.	Which among the following will show maximum osmotic pressure? (A) 1M Nacl (B) 1M Mgcl2 (C) 1M (NH4)3PO4 (D) 1M Na2SO4 Please specify the reasons
Answer» Which among the following will show maximum osmotic pressure? (A) 1M Nacl (B) 1M Mgcl₂ (C) 1M (NH₄)₃PO₄ (D) 1M Na₂SO₄ Please specify the reasons

2.

Which among the following will show maximum osmotic pressure? (A) 1M Nacl (B) 1M Mgcl2 (C) 1M (NH4)3PO4 (D) 1M Na2SO4 Please specify the reasons

Answer»

Which among the following will show maximum osmotic pressure?

(A) 1M Nacl

(B) 1M Mgcl₂

(C) 1M (NH₄)₃PO₄

(D) 1M Na₂SO₄

Please specify the reasons

Discussion

3.	Which of the following pairs will exhibit negative deviation ? A) CCl4 + C6H6 B) H2O + CH3OH C) H2O + C2H5OH D) phenol + aniline Ans : D please give detailed explanation. Got test tomorrow.
Answer» Which of the following pairs will exhibit negative deviation ? A) CCl4 + C6H6 B) H2O + CH3OH C) H2O + C2H5OH D) phenol + aniline Ans : D please give detailed explanation. Got test tomorrow.

Discussion

4.	What is the atomic number of element with valence shell configuration of 6s²6p⁴ ? How to find out the answer of this question?
Answer» What is the atomic number of element with valence shell configuration of 6s²6p⁴ ? How to find out the answer of this question?

4.

What is the atomic number of element with valence shell configuration of 6s²6p⁴ ? How to find out the answer of this question?

Answer»

What is the atomic number of element with valence shell configuration of 6s²6p⁴ ?

How to find out the answer of this question?

Discussion

5.	Which of the following compound is an example of expanded octet? A Methane B Sulphuric acid C Ammonia D Aluminum chloride
Answer» Which of the following compound is an example of expanded octet? A Methane B Sulphuric acid C Ammonia D Aluminum chloride

5.

Which of the following compound is an example of expanded octet? A Methane B Sulphuric acid C Ammonia D Aluminum chloride

Answer»

Which of the following compound is an example of expanded octet?

A Methane

B Sulphuric acid

C Ammonia

D Aluminum chloride

Discussion

6.	Why is half chair conformation of cyclohexane less stable than boat conformation? Actually in boat configuration there is repulsion between flag hydrogen ,but in half chair conformation there is no such repulsions. Then why is boat conformation more stable?
Answer» Why is half chair conformation of cyclohexane less stable than boat conformation? Actually in boat configuration there is repulsion between flag hydrogen ,but in half chair conformation there is no such repulsions. Then why is boat conformation more stable?

Discussion

7.	State three differences between isothermal process and adiabatic process
Answer» State three differences between isothermal process and adiabatic process

Discussion

8.	Energy of photoelectrons is independent of the _ of incident radiation. A. Wavelength B. Wavenumber C. Frequency D intensity
Answer» Energy of photoelectrons is independent of the _ of incident radiation. A. Wavelength B. Wavenumber C. Frequency D intensity

8.

Energy of photoelectrons is independent of the _ of incident radiation. A. Wavelength B. Wavenumber C. Frequency D intensity

Answer»

Energy of photoelectrons is independent of the _ of incident radiation.

A. Wavelength

B. Wavenumber

C. Frequency

D intensity

Discussion

9.	Mucopolysaccharide obtained from red algae is
Answer» Mucopolysaccharide obtained from red algae is

Discussion

10.	Sticking of one substance at the surface of another is called
Answer» Sticking of one substance at the surface of another is called

Discussion

11.	In a certain reaction 389.5 g of TiCl4 is reacted with 96 g of Mg. Calculate the percentage yield of Ti if 32 g of Ti is actually obtained . [At.wt Ti=48 u, Mg=24 u Cl=35.5 u]
Answer» In a certain reaction 389.5 g of $T i C l_{4}$ is reacted with 96 g of $M g$ . Calculate the percentage yield of $T i$ if 32 g of $T i$ is actually obtained . $[A t . w t T i = 48 u, M g = 24 u C l = 35.5 u]$

Discussion

12.	Mohr’s salt is
Answer» Mohr’s salt is

Discussion

13.	The correct IUPAC name of the compound. is
Answer» The correct IUPAC name of the compound. is

13.

The correct IUPAC name of the compound. is

Answer»

The correct IUPAC name of the compound.

is

Discussion

14.	0.2 g of a sample of H2O2 required 10 ml of NKMnO4 in a titration in the presence ofH2SO4 . Purity of H2O2 is
Answer» 0.2 g of a sample of $H_{2} O_{2}$ required 10 ml of N $K M n O_{4}$ in a titration in the presence of $H_{2} S O_{4}$ . Purity of $H_{2} O_{2}$ is

Discussion

15.	Match the column I with column II and mark the appropriate choice Column IColumn II(A)K2SO4.Al2(SO4)3.24H2O(aq)(i)Bronsted base(B)Salt of weak acid and strong base(ii)Neutral(C)H2PO−4(iii)Basic(D)Solution ofpH 6.5 at high temperature(iv)Acidic
Answer» Match the column I with column II and mark the appropriate choice $\begin{matrix} C o l u m n I & C o l u m n I I (A) & K_{2} S O_{4} . A l_{2} (S O_{4})_{3} .24 H_{2} O_{(a q)} & (i) & B r o n s t e d b a s e (B) & S a l t o f w e a k a c i d a n d s t r o n g b a s e & (i i) & N e u t r a l (C) & H_{2} P O_{4}^{-} & (i i i) & B a s i c (D) & S o l u t i o n o f p H 6.5 a t h i g h t e m p e r a t u r e & (i v) & A c i d i c \end{matrix}$

15.

Match the column I with column II and mark the appropriate choice Column IColumn II(A)K2SO4.Al2(SO4)3.24H2O(aq)(i)Bronsted base(B)Salt of weak acid and strong base(ii)Neutral(C)H2PO−4(iii)Basic(D)Solution ofpH 6.5 at high temperature(iv)Acidic

Answer»

Match the column I with column II and mark the appropriate choice

$\begin{matrix} C o l u m n I & C o l u m n I I (A) & K_{2} S O_{4} . A l_{2} (S O_{4})_{3} .24 H_{2} O_{(a q)} & (i) & B r o n s t e d b a s e (B) & S a l t o f w e a k a c i d a n d s t r o n g b a s e & (i i) & N e u t r a l (C) & H_{2} P O_{4}^{-} & (i i i) & B a s i c (D) & S o l u t i o n o f p H 6.5 a t h i g h t e m p e r a t u r e & (i v) & A c i d i c \end{matrix}$

Discussion

16.	The electron affinity of chlorine is +37 eV. How much energy in kJ is released when 3.55 g of chlorine is converted completely into Cl ion in the gaseous state . (1 eV=96.49 kJ/mole)
Answer» The electron affinity of chlorine is $+ 37 e V$ . How much energy in $k J$ is released when $3.55 g$ of chlorine is converted completely into $C l$ ion in the gaseous state . $(1 e V = 96.49 k J / m o l e)$

Discussion

17.	Given the value of Rydberg Constant is 10−7 m−1, the wave number of last line of the Balmer series in hydrogen spectrum will be:
Answer» Given the value of Rydberg Constant is $10^{- 7} m^{- 1}$ , the wave number of last line of the Balmer series in hydrogen spectrum will be:

Discussion

18.	Which of the following is paramagnetic ?
Answer» Which of the following is paramagnetic ?

Discussion

19.	Compound which has the highest thermal stability is?
Answer» Compound which has the highest thermal stability is?

Discussion

20.	Which of the following compounds is not an antacid?
Answer» Which of the following compounds is not an antacid?

Discussion

21.	Caprolactam polymerises to give
Answer» Caprolactam polymerises to give

Discussion

22.	What is the law of equipartition of energy (in detail explaination please)
Answer» What is the law of equipartition of energy (in detail explaination please)

Discussion

23.	The fraction of volume occupied by the nucleus with respect to the total volume of an atom is:
Answer» The fraction of volume occupied by the nucleus with respect to the total volume of an atom is:

Discussion

24.	In the reaction with HCl, an alkene reacts in accordance with the markovnikov’s rule, to give 1-chloro-1 methylcyclohexane. The possible alkene is
Answer» In the reaction with HCl, an alkene reacts in accordance with the markovnikov’s rule, to give 1-chloro-1 methylcyclohexane. The possible alkene is

Discussion

25.	Specific conductance of 0.1 M nitric acid is The molar conductance of solution is [Kerala (Med.) 2003]
Answer» Specific conductance of 0.1 M nitric acid is The molar conductance of solution is [Kerala (Med.) 2003]

25.

Specific conductance of 0.1 M nitric acid is The molar conductance of solution is [Kerala (Med.) 2003]

Answer»

Specific conductance of 0.1 M nitric acid is The molar conductance of solution is

[Kerala (Med.) 2003]

Discussion

26.	The orbital angular momentum of an electron in a d-orbital is
Answer» The orbital angular momentum of an electron in a d-orbital is

Discussion

27.	What mass of HNO3 is needed to convert 5 g of iodine into iodic acid according to the reaction? (at mass of I = 127 u)
Answer» What mass of $H N O_{3}$ is needed to convert 5 g of iodine into iodic acid according to the reaction? (at mass of I = 127 u)

Discussion

28.	The correct order of the spin only magnetic moment of metal ions in the following low spin complexes, [V(CN)6]4− , [Fe(CN)6]4−, [Ru(NH3)6]3+ and [Cr(NH3)6]2+ is:
Answer» The correct order of the spin only magnetic moment of metal ions in the following low spin complexes, $[V (C N)_{6}]^{4 -}$ , $[F e (C N)_{6}]^{4 -}$ , $[R u (N H_{3})_{6}]^{3 +}$ and $[C r (N H_{3})_{6}]^{2 +}$ is:

Discussion

29.	In the following reaction sequence, the correct structure(s) of X is/are:
Answer» In the following reaction sequence, the correct structure(s) of X is/are:

Discussion

30.	Why is the use of aspartame limited to cold foods and drinks ?
Answer» Why is the use of aspartame limited to cold foods and drinks ?

Discussion

31.	Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:
Answer» Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO₂ in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

31.

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

Answer»

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO₂ in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

Discussion

32.	What is back bonding?
Answer» What is back bonding?

Discussion

33.	In the Balmer series of the hydrogen spectrum, the third line corresponds to which one of the following inter-orbit jumps of the electron:
Answer» In the Balmer series of the hydrogen spectrum, the third line corresponds to which one of the following inter-orbit jumps of the electron:

Discussion

34.	Among the following compounds: a) Na2HPO3 b) NaH2PO4 c) NaH2PO2 d) Na2HPO4 Acidic salts are?
Answer» Among the following compounds: a) $N a_{2} H P O_{3}$ b) $N a H_{2} P O_{4}$ c) $N a H_{2} P O_{2}$ d) $N a_{2} H P O_{4}$ Acidic salts are?

Discussion

35.	Write the important postulates of Werner’s Theory of Coordination Compounds
Answer» Write the important postulates of Werner’s Theory of Coordination Compounds

Discussion

36.	Pyrophosphoric acid on heating to 600∘C gives
Answer» Pyrophosphoric acid on heating to $600^{\circ} C$ gives

Discussion

37.	CH3CH2OH+HClZnCl2−−−−→CH3CH2Cl+H2O In the above reaction, the leaving group is:
Answer» $C H_{3} C H_{2} O H + H C l Z n C l_{2} - --- \to C H_{3} C H_{2} C l + H_{2} O$ In the above reaction, the leaving group is:

Discussion

38.	Which of the following does not exists in free form.
Answer» Which of the following does not exists in free form.

Discussion

39.	CxHyNz is the empirical formula of an organic compound. When 0.3 g of the given compound is completely burnt in excess of oxygen, it produced 0.792 g of CO2 and 0.378 g of H2O. In Dumas' method for the estimation of nitrogen, 0.3 g of the same organic compound gave 33.6 mL of nitrogen gas at 300 K temperature and at 576 mm of Hg pressure, then the value of X×Y×Z is. ( Aqueous tension at 300 K is 15 mm of Hg, use R= 0.08 atm-L/mol K)
Answer» $C_{x} H_{y} N_{z}$ is the empirical formula of an organic compound. When 0.3 g of the given compound is completely burnt in excess of oxygen, it produced 0.792 g of $C O_{2}$ and 0.378 g of $H_{2} O$ . In Dumas' method for the estimation of nitrogen, 0.3 g of the same organic compound gave 33.6 mL of nitrogen gas at 300 K temperature and at 576 mm of Hg pressure, then the value of $X \times Y \times Z$ is. ( Aqueous tension at 300 K is 15 mm of Hg, use R= 0.08 atm-L/mol K)

Discussion

40.	The property of ion which depends on charge density
Answer» The property of ion which depends on charge density

Discussion

41.	The reaction of compound P with CH3MgBr(excess) in (C2H5)2O followed by addition of H2O gives Q. The compound Q on treatment with H2SO4 at 0∘C gives R. The reaction of R with CH3COCl in the presence of anhydrous AlCl3 in CH2Cl2 followed by treatment with H2O produces compound S [Et in compound P is ethyl group] The product S is:
Answer» The reaction of compound P with $C H_{3} M g B r$ (excess) in $(C_{2} H_{5})_{2} O$ followed by addition of $H_{2} O$ gives Q. The compound Q on treatment with $H_{2} S O_{4}$ at $0^{\circ} C$ gives R. The reaction of R with $C H_{3} C O C l$ in the presence of anhydrous $A l C l_{3}$ in $C H_{2} C l_{2}$ followed by treatment with $H_{2} O$ produces compound S [Et in compound P is ethyl group] The product S is:

Discussion

42.	Reaction between (C2H5)2Cd and CH3COCl leads to the formation of -
Answer» Reaction between $(C_{2} H_{5})_{2} C d$ and $C H_{3} C O C l$ leads to the formation of -

Discussion

43.	Which of the following molecules is polar?
Answer» Which of the following molecules is polar?

Discussion

44.	Name a calcium compound which hardens on wetting with water.
Answer» Name a calcium compound which hardens on wetting with water.

Discussion

45.	Question 16 Which of the following compounds is used for water softening ? (a) Ca3(PO4)2 (b) Na3PO4 (c)Na6P6O18 (d) Na2HPO4
Answer» Question 16 Which of the following compounds is used for water softening ? (a) $C a_{3} (P O_{4})_{2}$ (b) $N a_{3} P O_{4}$ (c) $N a_{6} P_{6} O_{1} 8$ (d) $N a_{2} H P O_{4}$

45.

Question 16 Which of the following compounds is used for water softening ? (a) Ca3(PO4)2 (b) Na3PO4 (c)Na6P6O18 (d) Na2HPO4

Answer»

Question 16

Which of the following compounds is used for water softening ?

(a) $C a_{3} (P O_{4})_{2}$ (b) $N a_{3} P O_{4}$ (c) $N a_{6} P_{6} O_{1} 8$ (d) $N a_{2} H P O_{4}$

Discussion

46.	The pressure-volume work for an ideal gas can be calculated by using the expression W=∫VfVipexdV. The work can also be calculated from the pV-plot by using the area under the curve within the specified limits. When an ideal gas is compressed (a) reversibly or (b) irreversibly from volume Vi to Vf. Choose the correct option. (a) W (reversible) = W (irreversible) (b) W (reversible) < W (irreversible) (c) W (reversible) = W (irreversible) (d) W (reversible) = W (irreversible) +pex.ΔV
Answer» The pressure-volume work for an ideal gas can be calculated by using the expression $W = \int_{V_{i}}^{V_{f}} p_{e x} d V$ . The work can also be calculated from the pV-plot by using the area under the curve within the specified limits. When an ideal gas is compressed (a) reversibly or (b) irreversibly from volume $V_{i} t o V_{f}$ . Choose the correct option. (a) W (reversible) = W (irreversible) (b) W (reversible) < W (irreversible) (c) W (reversible) = W (irreversible) (d) W (reversible) = W (irreversible) $+ p_{e x} . Δ V$

Discussion

47.	Among the 3d series, ___ has the highest stable oxidation state.
Answer» Among the 3d series, ___ has the highest stable oxidation state.

Discussion

48.	With increase of temperature, which of these changes
Answer» With increase of temperature, which of these changes

Discussion

49.	Which of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?
Answer» Which of the following alkenes will react faster with $H_{2}$ under catalytic hydrogenation conditions?

Discussion

50.	Question 5 Radioactive elements emit α,β andγ rays and are chacterised by their half-lives. The radioactive isotope of hydrogen is (a) protium (b) deuterium (c) tritium (d) hydronium
Answer» Question 5 Radioactive elements emit $α, β a n d γ$ rays and are chacterised by their half-lives. The radioactive isotope of hydrogen is (a) protium (b) deuterium (c) tritium (d) hydronium

50.

Question 5 Radioactive elements emit α,β andγ rays and are chacterised by their half-lives. The radioactive isotope of hydrogen is (a) protium (b) deuterium (c) tritium (d) hydronium

Answer»

Question 5

Radioactive elements emit $α, β a n d γ$ rays and are chacterised by their half-lives. The radioactive isotope of hydrogen is

(a) protium (b) deuterium (c) tritium (d) hydronium

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The boiling point of solution containing 0.20 in gm of ether is 0.17 k (kelvin) heigher than that of pure ether. Calculate the molar mass of solute (Kb=2.16)

Which among the following will show maximum osmotic pressure? (A) 1M Nacl (B) 1M Mgcl2 (C) 1M (NH4)3PO4 (D) 1M Na2SO4 Please specify the reasons

Which of the following pairs will exhibit negative deviation ? A) CCl4 + C6H6 B) H2O + CH3OH C) H2O + C2H5OH D) phenol + aniline Ans : D please give detailed explanation. Got test tomorrow.

What is the atomic number of element with valence shell configuration of 6s²6p⁴ ? How to find out the answer of this question?

Which of the following compound is an example of expanded octet? A Methane B Sulphuric acid C Ammonia D Aluminum chloride

Why is half chair conformation of cyclohexane less stable than boat conformation? Actually in boat configuration there is repulsion between flag hydrogen ,but in half chair conformation there is no such repulsions. Then why is boat conformation more stable?

State three differences between isothermal process and adiabatic process

Energy of photoelectrons is independent of the _ of incident radiation. A. Wavelength B. Wavenumber C. Frequency D intensity

Mucopolysaccharide obtained from red algae is

Sticking of one substance at the surface of another is called

In a certain reaction 389.5 g of TiCl4 is reacted with 96 g of Mg. Calculate the percentage yield of Ti if 32 g of Ti is actually obtained . [At.wt Ti=48 u, Mg=24 u Cl=35.5 u]

Mohr’s salt is

The correct IUPAC name of the compound. is

0.2 g of a sample of H2O2 required 10 ml of NKMnO4 in a titration in the presence ofH2SO4 . Purity of H2O2 is

Match the column I with column II and mark the appropriate choice Column IColumn II(A)K2SO4.Al2(SO4)3.24H2O(aq)(i)Bronsted base(B)Salt of weak acid and strong base(ii)Neutral(C)H2PO−4(iii)Basic(D)Solution ofpH 6.5 at high temperature(iv)Acidic

The electron affinity of chlorine is +37 eV. How much energy in kJ is released when 3.55 g of chlorine is converted completely into Cl ion in the gaseous state . (1 eV=96.49 kJ/mole)

Given the value of Rydberg Constant is 10−7 m−1, the wave number of last line of the Balmer series in hydrogen spectrum will be:

Which of the following is paramagnetic ?

Compound which has the highest thermal stability is?

Which of the following compounds is not an antacid?

Caprolactam polymerises to give

What is the law of equipartition of energy (in detail explaination please)

The fraction of volume occupied by the nucleus with respect to the total volume of an atom is:

In the reaction with HCl, an alkene reacts in accordance with the markovnikov’s rule, to give 1-chloro-1 methylcyclohexane. The possible alkene is

Specific conductance of 0.1 M nitric acid is The molar conductance of solution is [Kerala (Med.) 2003]

The orbital angular momentum of an electron in a d-orbital is

What mass of HNO3 is needed to convert 5 g of iodine into iodic acid according to the reaction? (at mass of I = 127 u)

The correct order of the spin only magnetic moment of metal ions in the following low spin complexes, [V(CN)6]4− , [Fe(CN)6]4−, [Ru(NH3)6]3+ and [Cr(NH3)6]2+ is:

In the following reaction sequence, the correct structure(s) of X is/are:

Why is the use of aspartame limited to cold foods and drinks ?

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

What is back bonding?

In the Balmer series of the hydrogen spectrum, the third line corresponds to which one of the following inter-orbit jumps of the electron:

Among the following compounds: a) Na2HPO3 b) NaH2PO4 c) NaH2PO2 d) Na2HPO4 Acidic salts are?

Write the important postulates of Werner’s Theory of Coordination Compounds

Pyrophosphoric acid on heating to 600∘C gives

CH3CH2OH+HClZnCl2−−−−→CH3CH2Cl+H2O In the above reaction, the leaving group is:

Which of the following does not exists in free form.

The property of ion which depends on charge density

Reaction between (C2H5)2Cd and CH3COCl leads to the formation of -

Which of the following molecules is polar?

Name a calcium compound which hardens on wetting with water.

Question 16 Which of the following compounds is used for water softening ? (a) Ca3(PO4)2 (b) Na3PO4 (c)Na6P6O18 (d) Na2HPO4

Among the 3d series, ___ has the highest stable oxidation state.

With increase of temperature, which of these changes

Which of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?

Question 5 Radioactive elements emit α,β andγ rays and are chacterised by their half-lives. The radioactive isotope of hydrogen is (a) protium (b) deuterium (c) tritium (d) hydronium