46295 + Interview Questions in Chemistry

1.	Chitin is an example of a:
Answer» Chitin is an example of a:

Discussion

2.	Arrange the following compounds in the order of decreasing tendency towards SN2 reaction. CH3CH2CH2Cl . . . . . . . . . (i)CH3CH2CHClCH3 . . . . . . .(ii)(CH3)2CHCH2Cl . . . . . . . .(iii)(CH3)3C−Cl . . . . . . . . . . (iv)
Answer» Arrange the following compounds in the order of decreasing tendency towards $S N_{2}$ reaction. $C H_{3} C H_{2} C H_{2} C l . . . . . . . . . (i)$ $C H_{3} C H_{2} C H C l C H_{3} . . . . . . . (i i)$ $(C H_{3})_{2} C H C H_{2} C l . . . . . . . . (i i i)$ $(C H_{3})_{3} C - C l . . . . . . . . . . (i v)$

Discussion

3.	Correct order of electron density in aromatic ring of following compounds is:
Answer» Correct order of electron density in aromatic ring of following compounds is:

Discussion

4.	From the following statements, concerning ideal gas at any given temperature T, select the correct one(s)
Answer» From the following statements, concerning ideal gas at any given temperature T, select the correct one(s)

4.

From the following statements, concerning ideal gas at any given temperature T, select the correct one(s)

Answer»

From the following statements, concerning ideal gas at any given temperature T, select the correct one(s)

Discussion

5.	65 Name the oxidising and reducing agent in the following:- 2H2S + SO2 ---> 2H2O + 3S
Answer» 65 Name the oxidising and reducing agent in the following:- 2H2S + SO2 ---> 2H2O + 3S

Discussion

6.	What is stereochemically inactive s orbital and what is it's role in Drago's rule?
Answer» What is stereochemically inactive s orbital and what is it's role in Drago's rule?

Discussion

7.	A solution contains a mixture of Ag+ (0.10 M) and Hg2+ (0.10 M) which are to be separated by selective precipitation. Calculate the maximum concentration of iodine ion at which one of them gets precipitated almost completely. What percentage of that metal ion is precipitated ? Ksp:AgI = 8.5 × 10−17, HgI2 = 2.5 × 10−26
Answer» A solution contains a mixture of $A g^{+}$ $(0.10 M)$ and $H g^{2 +}$ $(0.10 M)$ which are to be separated by selective precipitation. Calculate the maximum concentration of iodine ion at which one of them gets precipitated almost completely. What percentage of that metal ion is precipitated ? $K_{s p}$ : $A g I$ = $8.5 \times 10^{- 17}$ , $H g I_{2}$ = $2.5 \times 10^{- 26}$

Discussion

8.	The correct order of the basic strength of methyl substituted amines in aqueous solution is:
Answer» The correct order of the basic strength of methyl substituted amines in aqueous solution is:

Discussion

9.	Explain to me what is John teller effect with detail??
Answer» Explain to me what is John teller effect with detail??

Discussion

10.	What masses of NaCl and Water are 15% of 175g Solution?
Answer» What masses of NaCl and Water are 15% of 175g Solution?

Discussion

11.	In the ideal double-slit experiment, when a glass plate (refractive index 1.5) of thickness t is introduced in the path of one of the interfering beams (wavelength λ), the intensity at the position where the central maximum occurred previously, remains unchanged. The minimum thickness of the glass plate is,
Answer» In the ideal double-slit experiment, when a glass plate (refractive index $1.5$ ) of thickness $t$ is introduced in the path of one of the interfering beams (wavelength $λ$ ), the intensity at the position where the central maximum occurred previously, remains unchanged. The minimum thickness of the glass plate is,

Discussion

12.	Q 23/30 The values of observed and calculated molecular weightsof silver nitrate are 90 and 170 respectively. The degree ofdissociation of silver nitrate is
Answer» Q 23/30 The values of observed and calculated molecular weightsof silver nitrate are 90 and 170 respectively. The degree ofdissociation of silver nitrate is

Discussion

13.	What is the ratio of volumes of hydrogen and oxygen in the electrolysis of water?
Answer» What is the ratio of volumes of hydrogen and oxygen in the electrolysis of water?

Discussion

14.	Which is the least reactive alkyl halide in E1 reaction?
Answer» Which is the least reactive alkyl halide in $E 1$ reaction?

Discussion

15.	The stopcock connecting the two bulbs of volume 5 litre and 10 litre containing an ideal gas at 9 atm and 6 atm respectively. What is the final pressure if the temprature remains the same?
Answer» The stopcock connecting the two bulbs of volume $5 litre and 10 litre$ containing an ideal gas at $9 atm and 6 atm$ respectively. What is the final pressure if the temprature remains the same?

Discussion

16.	SO2 reacts with Cl2 in sunlight to form
Answer» $S O_{2}$ reacts with $C l_{2}$ in sunlight to form

Discussion

17.	21. The unbalanced equation for the reaction of P4S3 with nitrate in aqueous acidic medium is given below: P_4S_{3 }+ NO_3^{- }--> H_3PO_{4 }+ SO_4^{2-}+ NO The number of moles of water required per mole of P4S
Answer» 21. The unbalanced equation for the reaction of P4S3 with nitrate in aqueous acidic medium is given below: P_4S_{3 }+ NO_3^{- }--> H_3PO_{4 }+ SO_4^{2-}+ NO The number of moles of water required per mole of P4S

Discussion

18.	and can be considered reasons for smog formation in Delhi in winters.
Answer» and can be considered reasons for smog formation in Delhi in winters.

Discussion

19.

The tests performed on compound X and their inferences are given below: Test Inference(a) 2,4-DNP test Coloured precipitate(b) Idoform test Yellow precipitate(c) Azo-dye test No dye formationCompound 'X' is:

Answer»

The tests performed on compound $X$ and their inferences are given below:

Test	Inference
(a) 2,4-DNP test	Coloured precipitate
(b) Idoform test	Yellow precipitate
(c) Azo-dye test	No dye formation

Compound '

X

' is:

Discussion

20.	What is Schrödinger equation?
Answer» What is Schrödinger equation?

Discussion

21.	The reaction between gaseous NH3 and HBr produces a white solid NH4Br . Suppose a small quantity of gaseous NH3 and gaseous HBr are introduced simultaneously into opposite ends of an open tube which is one metre long. Calculate the distance of white solid formed from the end which was used to introduce NH3.
Answer» The reaction between gaseous $N H_{3}$ and $H B r$ produces a white solid $N H_{4} B r$ . Suppose a small quantity of gaseous $N H_{3}$ and gaseous $H B r$ are introduced simultaneously into opposite ends of an open tube which is one metre long. Calculate the distance of white solid formed from the end which was used to introduce $N H_{3}$ .

Discussion

22.	The correct order of thermal stability of halogen halides is:
Answer» The correct order of thermal stability of halogen halides is:

Discussion

23.	Balanced ionic equation for the reaction of Potassium Dichromate (VI) K2Cr2O7 with Sodium Sulphite Na2SO3 in acid solution to give Chromium (III) ion and sulphate ion is
Answer» Balanced ionic equation for the reaction of Potassium Dichromate (VI) K₂Cr₂O₇ with Sodium Sulphite Na₂SO₃ in acid solution to give Chromium (III) ion and sulphate ion is

Discussion

24.	The brown ring for NO−2 and NO−3 is due to the formation of complex ion with formula :
Answer» The brown ring for $N O_{2}^{-}$ and $N O_{3}^{-}$ is due to the formation of complex ion with formula :

Discussion

25.	For orthorhombic system axial ratios are a≠b≠c and the axial angles are:[1 mark]
Answer» For orthorhombic system axial ratios are $a \neq b \neq c$ and the axial angles are: [1 mark]

Discussion

26.	what is labelled diagram of heart and eye
Answer» what is labelled diagram of heart and eye

Discussion

27.	One of the essential alpha amino acids is:
Answer» One of the essential alpha amino acids is:

Discussion

28.	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

29.	The correct order of hydrogen bond strengths is:
Answer» The correct order of hydrogen bond strengths is:

Discussion

30.	117 g of NaCl is added to 222 g of water in a container. Calculate the temperature at which the water boils at 1 atm?Given:Ebullioscopic constant for water(Kb)=0.52 K kg mol−1Molecular mass of NaCl=58.5 g mol−1and boiling point of pure water is 100∘C
Answer» $117 g$ of $N a C l$ is added to $222 g$ of water in a container. Calculate the temperature at which the water boils at 1 atm? Given: $Ebullioscopic constant for water (K_{b}) = 0.52 K k g {mol}^{- 1}$ $Molecular mass of NaCl = 58.5 g m o l^{- 1}$ and boiling point of pure water is $100^{\circ} C$

Discussion

31.	53. Show by using rate law how much rate of rhe reaction, 2NO + O2 -> 2NO2 will change if the volume of the reaction vessel is reduced to 1/3rd of its initial value.
Answer» 53. Show by using rate law how much rate of rhe reaction, 2NO + O2 -> 2NO2 will change if the volume of the reaction vessel is reduced to 1/3rd of its initial value.

Discussion

32.	At a pressure of 760 torr and temperature of 273 K, the indicated volume of which system is not consistent with the observation
Answer» At a pressure of 760 torr and temperature of $273 K$ , the indicated volume of which system is not consistent with the observation

Discussion

33.	The orbital diagram in which the Aufbau principle is violated is:
Answer» The orbital diagram in which the Aufbau principle is violated is:

Discussion

34.	Propan-2-olPBr3−−−→ Mg−−−→ether HCHO−−−−→ H3O+−−−→ PCC−−−→(A)BenzeneBr2−−−−→FeBr3 Mg−−−→ether(B)(A)+(B) −−→ H3O+−−−→(C)Final product (C) would be:
Answer» $Propan-2-ol P B r_{3} - -- \to M g - -- \to ether H C H O - --- \to H_{3} O^{+} - -- \to P C C - -- \to (A)$ $Benzene B r_{2} - --- \to F e B r_{3} M g - -- \to ether (B)$ $(A) + (B) - - \to H_{3} O^{+} - -- \to (C)$ Final product (C) would be:

Discussion

35.	A cubic crystal is made of particles A B and C If A is present at the corners of cube B occupies all those face centres which are not opposite to each other while C occupies rest of the face centres as well as alternat edge centres then the formula of crystal will b
Answer» A cubic crystal is made of particles A B and C If A is present at the corners of cube B occupies all those face centres which are not opposite to each other while C occupies rest of the face centres as well as alternat edge centres then the formula of crystal will b

Discussion

36.	How to solve: Number of moles of Carbon Atoms?
Answer» How to solve: Number of moles of Carbon Atoms?

36.

How to solve: Number of moles of Carbon Atoms?

Answer»

How to solve:

Number of moles of Carbon Atoms?

Discussion

37.	The major product obtained in the following reaction is:
Answer» The major product obtained in the following reaction is:

Discussion

38.	The shape and geometry of XeF2 in vapor phase are respectively:
Answer» The shape and geometry of $X e F_{2}$ in vapor phase are respectively:

Discussion

39.	What would be the functional isomer of the compound
Answer» What would be the functional isomer of the compound

Discussion

40.	23. How many pH bonds are there in H3P04 and how to calculate it
Answer» 23. How many pH bonds are there in H3P04 and how to calculate it

Discussion

41.	The electronegativity order of O, F, Cl and Br is:
Answer» The electronegativity order of O, F, Cl and Br is:

Discussion

42.	A halogen compound A on hydrolysis with dil. alkali followed by acidification gives acetic acid. The compound A is
Answer» A halogen compound A on hydrolysis with dil. alkali followed by acidification gives acetic acid. The compound A is

Discussion

43.	Which of the following reaction shows heterogeneous equilibrium?
Answer» Which of the following reaction shows heterogeneous equilibrium?

Discussion

44.	the hydrogen bonds encountered in HF,H_2O,NH_3 and HF_2^-.The relative energies of hydrogen bond is
Answer» the hydrogen bonds encountered in HF,H_2O,NH_3 and HF_2^-.The relative energies of hydrogen bond is

Discussion

45.	In compounds of type ECl3, where E=B, P, As or Bi, the Cl−E−Cl bond angles for different E are in the order:
Answer» In compounds of type $E C l_{3}$ , where $E = B, P, A s or B i$ , the $C l - E - C l$ bond angles for different $E$ are in the order:

Discussion

46.	Why is the Entropy of Adsorption of H2 on glass surface positive?
Answer» Why is the Entropy of Adsorption of H2 on glass surface positive?

Discussion

47.	2.) Which of the following compounds are gem-dihalides ? (a) Ethylidene chloride (b) Ethylene dichloride (c) Methyl chloride (d) Benzyl chloride
Answer» 2.) Which of the following compounds are gem-dihalides ? (a) Ethylidene chloride (b) Ethylene dichloride (c) Methyl chloride (d) Benzyl chloride

Discussion

48.	why sodium metal is not obtained at cathode when aq NaCl is electrolysed with Pt electrodes but obtained when molten NaCl is electrolysed.
Answer» why sodium metal is not obtained at cathode when aq NaCl is electrolysed with Pt electrodes but obtained when molten NaCl is electrolysed.

Discussion

49.	If 2.77×1025 electrons are there in a MgCl2 sample, then what is the mass of MgCl2 present?
Answer» If $2.77 \times 10^{25}$ electrons are there in a $M g C l_{2}$ sample, then what is the mass of $M g C l_{2}$ present?

Discussion

50.	Which halide ion is the best nucleophile in dimethyl sulfoxide solution?
Answer» Which halide ion is the best nucleophile in dimethyl sulfoxide solution?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Chitin is an example of a:

Arrange the following compounds in the order of decreasing tendency towards SN2 reaction. CH3CH2CH2Cl . . . . . . . . . (i)CH3CH2CHClCH3 . . . . . . .(ii)(CH3)2CHCH2Cl . . . . . . . .(iii)(CH3)3C−Cl . . . . . . . . . . (iv)

Correct order of electron density in aromatic ring of following compounds is:

From the following statements, concerning ideal gas at any given temperature T, select the correct one(s)

65 Name the oxidising and reducing agent in the following:- 2H2S + SO2 ---> 2H2O + 3S

What is stereochemically inactive s orbital and what is it's role in Drago's rule?

The correct order of the basic strength of methyl substituted amines in aqueous solution is:

Explain to me what is John teller effect with detail??

What masses of NaCl and Water are 15% of 175g Solution?

Q 23/30 The values of observed and calculated molecular weightsof silver nitrate are 90 and 170 respectively. The degree ofdissociation of silver nitrate is

What is the ratio of volumes of hydrogen and oxygen in the electrolysis of water?

Which is the least reactive alkyl halide in E1 reaction?

The stopcock connecting the two bulbs of volume 5 litre and 10 litre containing an ideal gas at 9 atm and 6 atm respectively. What is the final pressure if the temprature remains the same?

SO2 reacts with Cl2 in sunlight to form

21. The unbalanced equation for the reaction of P4S3 with nitrate in aqueous acidic medium is given below: P_4S_{3 }+ NO_3^{- }--> H_3PO_{4 }+ SO_4^{2-}+ NO The number of moles of water required per mole of P4S

and can be considered reasons for smog formation in Delhi in winters.

The tests performed on compound X and their inferences are given below: Test Inference(a) 2,4-DNP test Coloured precipitate(b) Idoform test Yellow precipitate(c) Azo-dye test No dye formationCompound 'X' is:

What is Schrödinger equation?

The correct order of thermal stability of halogen halides is:

Balanced ionic equation for the reaction of Potassium Dichromate (VI) K2Cr2O7 with Sodium Sulphite Na2SO3 in acid solution to give Chromium (III) ion and sulphate ion is

The brown ring for NO−2 and NO−3 is due to the formation of complex ion with formula :

For orthorhombic system axial ratios are a≠b≠c and the axial angles are:[1 mark]

what is labelled diagram of heart and eye

One of the essential alpha amino acids is:

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]

The correct order of hydrogen bond strengths is:

117 g of NaCl is added to 222 g of water in a container. Calculate the temperature at which the water boils at 1 atm?Given:Ebullioscopic constant for water(Kb)=0.52 K kg mol−1Molecular mass of NaCl=58.5 g mol−1and boiling point of pure water is 100∘C

53. Show by using rate law how much rate of rhe reaction, 2NO + O2 -> 2NO2 will change if the volume of the reaction vessel is reduced to 1/3rd of its initial value.

At a pressure of 760 torr and temperature of 273 K, the indicated volume of which system is not consistent with the observation

The orbital diagram in which the Aufbau principle is violated is:

Propan-2-olPBr3−−−→ Mg−−−→ether HCHO−−−−→ H3O+−−−→ PCC−−−→(A)BenzeneBr2−−−−→FeBr3 Mg−−−→ether(B)(A)+(B) −−→ H3O+−−−→(C)Final product (C) would be:

A cubic crystal is made of particles A B and C If A is present at the corners of cube B occupies all those face centres which are not opposite to each other while C occupies rest of the face centres as well as alternat edge centres then the formula of crystal will b

How to solve: Number of moles of Carbon Atoms?

The major product obtained in the following reaction is:

The shape and geometry of XeF2 in vapor phase are respectively:

What would be the functional isomer of the compound

23. How many pH bonds are there in H3P04 and how to calculate it

The electronegativity order of O, F, Cl and Br is:

A halogen compound A on hydrolysis with dil. alkali followed by acidification gives acetic acid. The compound A is

Which of the following reaction shows heterogeneous equilibrium?

the hydrogen bonds encountered in HF,H_2O,NH_3 and HF_2^-.The relative energies of hydrogen bond is

In compounds of type ECl3, where E=B, P, As or Bi, the Cl−E−Cl bond angles for different E are in the order:

Why is the Entropy of Adsorption of H2 on glass surface positive?

2.) Which of the following compounds are gem-dihalides ? (a) Ethylidene chloride (b) Ethylene dichloride (c) Methyl chloride (d) Benzyl chloride

why sodium metal is not obtained at cathode when aq NaCl is electrolysed with Pt electrodes but obtained when molten NaCl is electrolysed.

If 2.77×1025 electrons are there in a MgCl2 sample, then what is the mass of MgCl2 present?

Which halide ion is the best nucleophile in dimethyl sulfoxide solution?