46295 + Interview Questions in Chemistry

1.	Hybridization of chromate ion
Answer» Hybridization of chromate ion

Discussion

2.	The correct order of increasing bond length of C-H,C-O,C-C,and C=C is
Answer» The correct order of increasing bond length of C-H,C-O,C-C,and C=C is

Discussion

3.	55 Due to lanthanide contraction basic character decreases in series why.?
Answer» 55 Due to lanthanide contraction basic character decreases in series why.?

Discussion

4.	The filament of a bulb glows due to?
Answer» The filament of a bulb glows due to?

Discussion

5.	2Fig. 1.10 represents a crystal unit of cesium chloride, CsCl. Thecesium atoms, represented by open circles are situated at thecorners of a cube of side 0.40nm, whereas a Cl atom is situated atthe centre of the cube. The Cs atoms are deficient in one electronwhile the Cl atom carries an excess electron.i What is the net electric field on the Cl atom due to eight Csatoms?(ii)Suppose that the Cs atom at the corner A is missing. What isthe net force now on the Cl atom due to seven remaining Csatoms?
Answer» 2Fig. 1.10 represents a crystal unit of cesium chloride, CsCl. Thecesium atoms, represented by open circles are situated at thecorners of a cube of side 0.40nm, whereas a Cl atom is situated atthe centre of the cube. The Cs atoms are deficient in one electronwhile the Cl atom carries an excess electron.i What is the net electric field on the Cl atom due to eight Csatoms?(ii)Suppose that the Cs atom at the corner A is missing. What isthe net force now on the Cl atom due to seven remaining Csatoms?

Discussion

6.	Which of the following orbitals can undergo hybridisation?
Answer» Which of the following orbitals can undergo hybridisation?

Discussion

7.	number of c atoms which present linearly in vinyl acetylen
Answer» number of c atoms which present linearly in vinyl acetylen

Discussion

8.	When P reacts with caustic soda, the products are PH3 and NaH2PO2. This reaction is an example of
Answer» When P reacts with caustic soda, the products are $P H_{3}$ and $N a H_{2} P O_{2}$ . This reaction is an example of

Discussion

9.	Correct order of Bond Angle is a)OF2
Answer» Correct order of Bond Angle is a)OF2

Discussion

10.	Is NH3 is a strong field ligand
Answer» Is NH₃is a strong field ligand

Discussion

11.	A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same ffequency the maximum value of tensionfor string wil3(2) 4 N(4) 16 N(1)2 N8 N
Answer» A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same ffequency the maximum value of tensionfor string wil3(2) 4 N(4) 16 N(1)2 N8 N

Discussion

12.	Which molecule does not have net zero dipole moment?
Answer» Which molecule does not have net zero dipole moment?

Discussion

13.	3. Why is complex [Ma3b3] optically inactive even though it contains no element of symmetry?
Answer» 3. Why is complex [Ma3b3] optically inactive even though it contains no element of symmetry?

Discussion

14.	The average kinetic energy of an ideal gas per molecule in SI unit at 25∘C will be
Answer» The average kinetic energy of an ideal gas per molecule in SI unit at $25^{\circ} C$ will be

Discussion

15.	Predict the major product of the given reaction
Answer» Predict the major product of the given reaction

Discussion

16.	Find from the following pairs which does not have the same shape?
Answer» Find from the following pairs which does not have the same shape?

Discussion

17.	oxidation state of oxygen in CrO5
Answer» oxidation state of oxygen in CrO5

Discussion

18.	The products of the following reaction are:
Answer» The products of the following reaction are:

Discussion

19.	A matchbox is an example of :-
Answer» A matchbox is an example of :-

Discussion

20.	The value of Kc for the reaction3O2 (g) 2O3 (g)is 2.0 ×10–50 at 25°C. If the equilibrium concentration of O2 in air at 25°C is 1.6 ×10–2, what is the concentration of O3?
Answer» The value of K_c for the reaction 3O₂ (g) 2O₃ (g) is 2.0 ×10^–50 at 25°C. If the equilibrium concentration of O₂ in air at 25°C is 1.6 ×10^–2, what is the concentration of O₃?

20.

The value of Kc for the reaction3O2 (g) 2O3 (g)is 2.0 ×10–50 at 25°C. If the equilibrium concentration of O2 in air at 25°C is 1.6 ×10–2, what is the concentration of O3?

Answer»

The value of K_c for the reaction

3O₂ (g) 2O₃ (g)

is 2.0 ×10^–50 at 25°C. If the equilibrium concentration of O₂ in air at 25°C is 1.6 ×10^–2, what is the concentration of O₃?

Discussion

21.	Which of the following orbitals is of the leastenergy?(2) 2s (B)(1) 2s (Li)(4) 2s (N)(3) 2s (F)
Answer» Which of the following orbitals is of the leastenergy?(2) 2s (B)(1) 2s (Li)(4) 2s (N)(3) 2s (F)

Discussion

22.	Anaerobically treated effluent has MPN of total coliform as 106/100 mL. After chlorination, the MPN value declines to 102/100 mL. The percent removal (%R) and log removal (log R) of total coliform MPN are
Answer» Anaerobically treated effluent has MPN of total coliform as $10^{6} / 100 m L$ . After chlorination, the MPN value declines to $10^{2} / 100 m L$ . The percent removal (%R) and log removal (log R) of total coliform MPN are

Discussion

23.	If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,
Answer» If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,

Discussion

24.	What is molarity quardent
Answer» What is molarity quardent

Discussion

25.	93 2.84 g of methyl iodide was completely converted into methyl magnesium iodide and the product was decomposed by excess of ethanol . The volume of gaseous hydrocarbon produced at NTP will be
Answer» 93 2.84 g of methyl iodide was completely converted into methyl magnesium iodide and the product was decomposed by excess of ethanol . The volume of gaseous hydrocarbon produced at NTP will be

Discussion

26.	1 liter hard water contains 12 milgram Mg+2 then calculate number of mili equivalent of washing soda required for removal of hardness of water
Answer» 1 liter hard water contains 12 milgram Mg+2 then calculate number of mili equivalent of washing soda required for removal of hardness of water

Discussion

27.	End product (C) in above reaction is :
Answer» End product (C) in above reaction is :

Discussion

28.	Liquid M and liquid N form an ideal solution. The vapourpressures of pure liquids M and N are 450 and 700 mmHg,respectively, at the same temperature. Then correct statementis:xM = mole fraction of M in solution;xN = mole fraction of N in solution;yM = mole fraction of M in vapour phase;yN = mole fraction of N in vapour phase
Answer» Liquid M and liquid N form an ideal solution. The vapour pressures of pure liquids M and N are 450 and 700 mmHg, respectively, at the same temperature. Then correct statement is: $x_{M}$ = mole fraction of M in solution; $x_{N}$ = mole fraction of N in solution; $y_{M}$ = mole fraction of M in vapour phase; $y_{N}$ = mole fraction of N in vapour phase

Discussion

29.	The general formula of double chain silicates is:
Answer» The general formula of double chain silicates is:

Discussion

30.	We know that in keto enol tautomerism keto form is most commonly most stable than enol form. Similarly in nitro acinitro tautomerism which form is, in general, more stable?(nitro or anitro?)
Answer» We know that in keto enol tautomerism keto form is most commonly most stable than enol form. Similarly in nitro acinitro tautomerism which form is, in general, more stable?(nitro or anitro?)

Discussion

31.	what are the functions of androstenedione and DHEA
Answer» what are the functions of androstenedione and DHEA

Discussion

32.	22 What is the significance of the word "hypo" in the name of oxoacids of p block elements
Answer» 22 What is the significance of the word "hypo" in the name of oxoacids of p block elements

Discussion

33.	15. Why is ortho nitro benzoic acid more acidic than p nitro benzoic acid when there is a chance for hydrogen bonding of ortho nitro with cooh or ortho nitro intramolecular hydrogem bonding
Answer» 15. Why is ortho nitro benzoic acid more acidic than p nitro benzoic acid when there is a chance for hydrogen bonding of ortho nitro with cooh or ortho nitro intramolecular hydrogem bonding

Discussion

34.	Which of the products formed when acetone reacts with barium hydroxide solution
Answer» Which of the products formed when acetone reacts with barium hydroxide solution

Discussion

35.	Why markovnikov rule is not applicable in methoxy cyclo pentene
Answer» Why markovnikov rule is not applicable in methoxy cyclo pentene

Discussion

36.	NX is produced by the following step of reactions M + X2⟶MX2⟶MX2+X2⟶M3X8M3X8+N2CO3⟶NX +CO2+M3O4 How much M (metal) is consumed to produce 206 gm of NX. (Take at wt. of M = 56, N = 23, X = 80)
Answer» NX is produced by the following step of reactions M + $X_{2}$ $⟶$ $M X_{2}$ $⟶$ $M X_{2}$ + $X_{2}$ $⟶$ $M_{3} X_{8}$ $M_{3} X_{8}$ + $N_{2} C O_{3}$ $⟶$ NX + $C O_{2}$ + $M_{3} O_{4}$ How much M (metal) is consumed to produce 206 gm of NX. (Take at wt. of M = 56, N = 23, X = 80)

Discussion

37.	Which of the following pairs of species have the same bond order?
Answer» Which of the following pairs of species have the same bond order?

Discussion

38.	What is band gap?
Answer» What is band gap?

Discussion

39.	10% (w/v) solution of sucrose (M.W =342) is isotonic with 5% (w/v) solution of a solute X under identical conditions. the molecular weight of x is
Answer» 10% (w/v) solution of sucrose (M.W =342) is isotonic with 5% (w/v) solution of a solute X under identical conditions. the molecular weight of x is

Discussion

40.	CocCl_{2(aq) +} H_2O_{2_{(aq)}}\xrightarrow[{basic medium}]{}Co(OH)_{3(s)}+C{l^-}_{(aq)} Balance rthe redox equation by oxidation niumber method
Answer» CocCl_{2(aq) +} H_2O_{2_{(aq)}}\xrightarrow[{basic medium}]{}Co(OH)_{3(s)}+C{l^-}_{(aq)} Balance rthe redox equation by oxidation niumber method

Discussion

41.	Do glycosides show mutarotation if yes/no then why?
Answer» Do glycosides show mutarotation if yes/no then why?

Discussion

42.	which one of the following is more basic? 1) 3-metyl aniline 2)3-nitro aniline 3)3-cloro aniline 4) 3-methoxy anilin
Answer» which one of the following is more basic? 1) 3-metyl aniline 2)3-nitro aniline 3)3-cloro aniline 4) 3-methoxy anilin

Discussion

43.	(i) Give reason for the following. Covalent bonds are directional bonds while ionic bonds are non-directional. (ii) Water molecule has bent structure whereas carbon dioxide molecule is linear. (iii) Give reason for the following. Ethyne molecule is linear.
Answer» (i) Give reason for the following. Covalent bonds are directional bonds while ionic bonds are non-directional. (ii) Water molecule has bent structure whereas carbon dioxide molecule is linear. (iii) Give reason for the following. Ethyne molecule is linear.

43.

(i) Give reason for the following. Covalent bonds are directional bonds while ionic bonds are non-directional. (ii) Water molecule has bent structure whereas carbon dioxide molecule is linear. (iii) Give reason for the following. Ethyne molecule is linear.

Answer»

(i)

Give reason for the following.

Covalent bonds are directional bonds while ionic bonds are non-directional.

(ii)

Water molecule has bent structure whereas carbon dioxide molecule is linear.

(iii)

Give reason for the following.

Ethyne molecule is linear.

Discussion

44.	In how many reaction(s), gemdihalide is obtained as a major product?
Answer» In how many reaction(s), gemdihalide is obtained as a major product?

Discussion

45.	Prove that the centre of mass of a thin circular plate will be at its geometrical centre
Answer» Prove that the centre of mass of a thin circular plate will be at its geometrical centre

Discussion

46.	The pair of amphoteric hydroxides is
Answer» The pair of amphoteric hydroxides is

46.

The pair of amphoteric hydroxides is

Answer»

The pair of amphoteric hydroxides is

Discussion

47.	what are vector law
Answer» what are vector law

Discussion

48.	In above figure, the gas filled in this bulb is subjected for the combustion of 10 moles of CH4 . Maximum number of moles of CO2 formed in this 2. The volume of the bulb is "11.2 x" litre at 280K. Find the approximate integer value of x.[R=0.08 litre atm mol−1K−1, Atmospheric pressure = 1 atm.]
Answer» In above figure, the gas filled in this bulb is subjected for the combustion of 10 moles of $C H_{4}$ . Maximum number of moles of $C O_{2}$ formed in this 2. The volume of the bulb is "11.2 x" litre at 280K. Find the approximate integer value of x. [R=0.08 litre atm $m o l^{- 1} K^{- 1},$ Atmospheric pressure = 1 atm.]

Discussion

49.	How many bidentate ligand required for an octahedral complex to show optical isomerism?
Answer» How many bidentate ligand required for an octahedral complex to show optical isomerism?

Discussion

50.	1 mole of an ideal gas at 25∘C is subjected to expand reversibly ten times of its initial volume. The change in entropy due to expansion is:
Answer» 1 mole of an ideal gas at $25^{\circ} C$ is subjected to expand reversibly ten times of its initial volume. The change in entropy due to expansion is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Hybridization of chromate ion

The correct order of increasing bond length of C-H,C-O,C-C,and C=C is

55 Due to lanthanide contraction basic character decreases in series why.?

The filament of a bulb glows due to?

Which of the following orbitals can undergo hybridisation?

number of c atoms which present linearly in vinyl acetylen

When P reacts with caustic soda, the products are PH3 and NaH2PO2. This reaction is an example of

Correct order of Bond Angle is a)OF2

Is NH3 is a strong field ligand

A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same ffequency the maximum value of tensionfor string wil3(2) 4 N(4) 16 N(1)2 N8 N

Which molecule does not have net zero dipole moment?

3. Why is complex [Ma3b3] optically inactive even though it contains no element of symmetry?

The average kinetic energy of an ideal gas per molecule in SI unit at 25∘C will be

Predict the major product of the given reaction

Find from the following pairs which does not have the same shape?

oxidation state of oxygen in CrO5

The products of the following reaction are:

A matchbox is an example of :-

The value of Kc for the reaction3O2 (g) 2O3 (g)is 2.0 ×10–50 at 25°C. If the equilibrium concentration of O2 in air at 25°C is 1.6 ×10–2, what is the concentration of O3?

Which of the following orbitals is of the leastenergy?(2) 2s (B)(1) 2s (Li)(4) 2s (N)(3) 2s (F)

Anaerobically treated effluent has MPN of total coliform as 106/100 mL. After chlorination, the MPN value declines to 102/100 mL. The percent removal (%R) and log removal (log R) of total coliform MPN are

If C - C (I), C = C(II) and C ≡ C (III) are three bond types, then their bond lengths will be respectively,

What is molarity quardent

93 2.84 g of methyl iodide was completely converted into methyl magnesium iodide and the product was decomposed by excess of ethanol . The volume of gaseous hydrocarbon produced at NTP will be

1 liter hard water contains 12 milgram Mg+2 then calculate number of mili equivalent of washing soda required for removal of hardness of water

End product (C) in above reaction is :

The general formula of double chain silicates is:

We know that in keto enol tautomerism keto form is most commonly most stable than enol form. Similarly in nitro acinitro tautomerism which form is, in general, more stable?(nitro or anitro?)

what are the functions of androstenedione and DHEA

22 What is the significance of the word "hypo" in the name of oxoacids of p block elements

15. Why is ortho nitro benzoic acid more acidic than p nitro benzoic acid when there is a chance for hydrogen bonding of ortho nitro with cooh or ortho nitro intramolecular hydrogem bonding

Which of the products formed when acetone reacts with barium hydroxide solution

Why markovnikov rule is not applicable in methoxy cyclo pentene

NX is produced by the following step of reactions M + X2⟶MX2⟶MX2+X2⟶M3X8M3X8+N2CO3⟶NX +CO2+M3O4 How much M (metal) is consumed to produce 206 gm of NX. (Take at wt. of M = 56, N = 23, X = 80)

Which of the following pairs of species have the same bond order?

What is band gap?

10% (w/v) solution of sucrose (M.W =342) is isotonic with 5% (w/v) solution of a solute X under identical conditions. the molecular weight of x is

CocCl_{2(aq) +} H_2O_{2_{(aq)}}\xrightarrow[{basic medium}]{}Co(OH)_{3(s)}+C{l^-}_{(aq)} Balance rthe redox equation by oxidation niumber method

Do glycosides show mutarotation if yes/no then why?

which one of the following is more basic? 1) 3-metyl aniline 2)3-nitro aniline 3)3-cloro aniline 4) 3-methoxy anilin

(i) Give reason for the following. Covalent bonds are directional bonds while ionic bonds are non-directional. (ii) Water molecule has bent structure whereas carbon dioxide molecule is linear. (iii) Give reason for the following. Ethyne molecule is linear.

In how many reaction(s), gemdihalide is obtained as a major product?

Prove that the centre of mass of a thin circular plate will be at its geometrical centre

The pair of amphoteric hydroxides is

what are vector law

In above figure, the gas filled in this bulb is subjected for the combustion of 10 moles of CH4 . Maximum number of moles of CO2 formed in this 2. The volume of the bulb is "11.2 x" litre at 280K. Find the approximate integer value of x.[R=0.08 litre atm mol−1K−1, Atmospheric pressure = 1 atm.]

How many bidentate ligand required for an octahedral complex to show optical isomerism?

1 mole of an ideal gas at 25∘C is subjected to expand reversibly ten times of its initial volume. The change in entropy due to expansion is: