46295 + Interview Questions in Chemistry

1.	12. 0.1gm of sample of CaCO3 is treated with 20ml of 0.1N HCl solution and excess of HCl is neutralized with 5ml of 0.1M Ca(OH)2.Find the percentage of CaCO3
Answer» 12. 0.1gm of sample of CaCO3 is treated with 20ml of 0.1N HCl solution and excess of HCl is neutralized with 5ml of 0.1M Ca(OH)2.Find the percentage of CaCO3

Discussion

2.	What is ionisation energy and separation energy? How to find them?
Answer» What is ionisation energy and separation energy? How to find them?

Discussion

3.	Why in flourite structure calcium forms lattice??Why in CsCl structure Cl forms lattice though the size of Cs is large?
Answer» Why in flourite structure calcium forms lattice?? Why in CsCl structure Cl forms lattice though the size of Cs is large?

Discussion

4.	Q. How many moles of alumina can be formed when a mixture of 0.36 mol of Aluminium and 0.36 mol of Oxygen are ignited. Which substance and how much it's in excess of that required ?
Answer» Q. How many moles of alumina can be formed when a mixture of 0.36 mol of Aluminium and 0.36 mol of Oxygen are ignited. Which substance and how much it's in excess of that required ?

Discussion

5.	What are the characteristics exhibited by a pure substance?
Answer» What are the characteristics exhibited by a pure substance?

Discussion

6.	Approximately what is the probability that, at room temperature (300 K), an electron at the top of the highest filled band in diamond (an insulator) will jump the energy gap Eg? For diamond, Eg is 5.5 eV.
Answer» Approximately what is the probability that, at room temperature (300 K), an electron at the top of the highest filled band in diamond (an insulator) will jump the energy gap Eg? For diamond, Eg is 5.5 eV.

Discussion

7.	π bonding is not involved in
Answer» $π$ bonding is not involved in

Discussion

8.	List-IList-II(I)100 ml of 0.2 M AlCl3 solution(P)Total concentration of cation(s)=0.12M+400 ml of 0.1 M HCl solution(II)50 ml of 0.4 M KCl+50 ml H2O(Q)[SO2−4]=2.5 M(III)30 ml of 0.2 M K2SO4+70 ml H2O(R)[Cl−=]2.5 M(IV)200 ml 24.5% (w/v) H2SO4(S)[SO2−4=]0.06 M(T)[Cl−=]0.2 M(U)Total concentration of cation(s) = 0.2 M
Answer» $\begin{matrix} List-I & List-II (I) & 100 ml of 0.2 M A l C l_{3} solution & (P) & Total concentration of cation(s)=0.12M + 400 ml of 0.1 M H C l solution (I I) & 50 ml of 0.4 M K C l + 50 ml H_{2} O & (Q) & [S O_{4}^{2 -}] = 2.5 M (I I I) & 30 ml of 0.2 M K_{2} S O_{4} + 70 ml H_{2} O & (R) & [C l^{-} =] 2.5 M (I V) & 200 ml 24.5 % (w/v) H_{2} S O_{4} & (S) & [S O_{4}^{2 -} =] 0.06 M (T) & [C l^{-} =] 0.2 M (U) & Total concentration of cation(s) = 0.2 M \end{matrix}$

Discussion

9.	The correct electronic configuration for Eu2+ is
Answer» The correct electronic configuration for $E u^{2 +}$ is

Discussion

10.	why normality= molarity * n-factor
Answer» why normality= molarity * n-factor

Discussion

11.	The complex [cu(nh3)4]2+ has which configuration and how much paired electrons
Answer» The complex [cu(nh3)4]2+ has which configuration and how much paired electrons

Discussion

12.	73.What is the hybridization is present in the Pcl3br2 and Pcl2br3 . Explain with proper reason and diagram.
Answer» 73.What is the hybridization is present in the Pcl3br2 and Pcl2br3 . Explain with proper reason and diagram.

Discussion

13.	Write free radical mechanism for polymerization of ethene
Answer» Write free radical mechanism for polymerization of ethene

Discussion

14.	Volume of an ideal gas is to be decreased by 10% by increase of pressure by x% under isothermal condition. Thus, x is
Answer» Volume of an ideal gas is to be decreased by 10% by increase of pressure by $x %$ under isothermal condition. Thus, $x$ is

Discussion

15.	11. Is deltaH of reaction , fusuon,atomisation etc arr same . which value of h to be used in the entropy equation gibbs equation etc.
Answer» 11. Is deltaH of reaction , fusuon,atomisation etc arr same . which value of h to be used in the entropy equation gibbs equation etc.

Discussion

16.	Oxidation number of oxygen is +1 in which compound?
Answer» Oxidation number of oxygen is +1 in which compound?

Discussion

17.	In preparation of Nitrobenzene, role of Nitric acid is- a) Oxidiser, b) Reducer, c) Acid, d) Base
Answer» In preparation of Nitrobenzene, role of Nitric acid is- a) Oxidiser, b) Reducer, c) Acid, d) Base

Discussion

18.	ques. 0.59g of silver salt of an organic acid (molar mass 210) on ignition gave 0.36g of pure silver. the basicity of acid is : (a)2 (b)3 (c)4 (d)
Answer» ques. 0.59g of silver salt of an organic acid (molar mass 210) on ignition gave 0.36g of pure silver. the basicity of acid is : (a)2 (b)3 (c)4 (d)

Discussion

19.	29 g of butane is burnt in excess of O2 at STP. Find the volume of the CO2 gas produced at STP.
Answer» $29 g$ of butane is burnt in excess of $O_{2}$ at STP. Find the volume of the $C O_{2}$ gas produced at STP.

Discussion

20.	48gram of oxygen is obtined on heating KClO3 when it is 50% pure. Find mass of KClO3 required
Answer» 48gram of oxygen is obtined on heating KClO3 when it is 50% pure. Find mass of KClO3 required

Discussion

21.	31.According to bohar principal the angular moment of electrons in the 6th is
Answer» 31.According to bohar principal the angular moment of electrons in the 6th is

Discussion

22.	Which one of the following does not haveintermolecular H-bonding ?
Answer» Which one of the following does not have intermolecular H-bonding ?

Discussion

23.	The equilibrium constant for the reaction given below is 2.0×10−7 at 300 K. PCl5(g)⇌PCl3(g)+Cl2(g). Calculate the value of \|S∘\| (in J mol−1 K−1) if ΔH∘=28.4 kJ mol−1(Give your answer upto one deimal only)
Answer» The equilibrium constant for the reaction given below is $2.0 \times 10^{- 7} a t 300 K$ . $P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$ . Calculate the value of $\| S^{\circ} \|$ (in $J m o l^{- 1} K^{- 1}$ ) if $Δ H^{\circ} = 28.4 k J m o l^{- 1}$ (Give your answer upto one deimal only)

23.

The equilibrium constant for the reaction given below is 2.0×10−7 at 300 K. PCl5(g)⇌PCl3(g)+Cl2(g). Calculate the value of |S∘| (in J mol−1 K−1) if ΔH∘=28.4 kJ mol−1(Give your answer upto one deimal only)

Answer»

The equilibrium constant for the reaction given below is $2.0 \times 10^{- 7} a t 300 K$ .
$P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$ . Calculate the value of $| S^{\circ} |$ (in $J m o l^{- 1} K^{- 1}$ ) if $Δ H^{\circ} = 28.4 k J m o l^{- 1}$ (Give your answer upto one deimal only)

Discussion

24.	5/6 lies between
Answer» 5/6 lies between

Discussion

25.	The reaction H2S+H2O2→2H2O+S shows
Answer» The reaction $H_{2} S + H_{2} O_{2} \to 2 H_{2} O + S$ shows

Discussion

26.	104. What is the most probable distance from thenucleus at which a 2p electron will be found in theH-atom? (1) 53 pm (3) 212 pm (2) 106 pm (4) 26.5 pm
Answer» 104. What is the most probable distance from thenucleus at which a 2p electron will be found in theH-atom? (1) 53 pm (3) 212 pm (2) 106 pm (4) 26.5 pm

Discussion

27.	What do you mean by dynamic equilibrium!
Answer» What do you mean by dynamic equilibrium!

Discussion

28.	Find the solution set of the following inequation \log_{10}(20-x)≥ \log_{10}x
Answer» Find the solution set of the following inequation \log_{10}(20-x)≥ \log_{10}x

Discussion

29.	Two separate air bubbles of radii 0.004 m and 0.002 m forms of the same liquid (surface tension 0.07 N/m) come together to form a double bubble. Find the radius of curvature of the internal film surface common to both the bubbles.
Answer» Two separate air bubbles of radii $0.004 m$ and $0.002 m$ forms of the same liquid $(surface tension 0.07 N/m)$ come together to form a double bubble. Find the radius of curvature of the internal film surface common to both the bubbles.

Discussion

30.	Which of the following hydride does NOT follow the Law of definite proportions?
Answer» Which of the following hydride does NOT follow the Law of definite proportions?

Discussion

31.	What does km value and vmax represent in a graph?
Answer» What does km value and vmax represent in a graph?

Discussion

32.	In gaseous triethylamine the′′−C−N−C−′′ bond angle is degree.
Answer» In gaseous triethylamine the $^{''} - C - N - C -^{''}$ bond angle is degree.

Discussion

33.	When CrI3 is treated with Cl2 in basic medium, the following reaction takes place. CrI3+KOH+Cl2→K2Cr2O7+KIO4+KCl+H2O To produce 81 mols of potassium chloride, how many mols of CrI3 should be taken?
Answer» When $C r I_{3}$ is treated with $C l_{2}$ in basic medium, the following reaction takes place. $C r I_{3} + K O H + C l_{2} \to K_{2} C r_{2} O_{7} + K I O_{4} + K C l + H_{2} O$ To produce 81 mols of potassium chloride, how many mols of $C r I_{3}$ should be taken?

Discussion

34.	22. Which of the following octahedral complexes do not show geometrical isomerism? Options: [Co(NH3)3Cl3] [PtCl2(NH3)4] Correct [Cr(H2O)5Cl]2+ [Co(en)3]3+
Answer» 22. Which of the following octahedral complexes do not show geometrical isomerism? Options: [Co(NH3)3Cl3] [PtCl2(NH3)4] Correct [Cr(H2O)5Cl]2+ [Co(en)3]3+

Discussion

35.	The molecular formula of a compound is C10H10 its structure has 5 double bonds in conjugations and a cycle is also there is this compound aromatic
Answer» The molecular formula of a compound is C10H10 its structure has 5 double bonds in conjugations and a cycle is also there is this compound aromatic

Discussion

36.	Which of the following haloalkanes has the shortest C−X bond length?
Answer» Which of the following haloalkanes has the shortest $C - X$ bond length?

Discussion

37.	Calculate [OH−] of 0.01 M ammonium hydroxide solution. The ionization constant for NH4OH is 1.8×10−5 M.
Answer» Calculate $[O H^{-}]$ of 0.01 M ammonium hydroxide solution. The ionization constant for $N H_{4} O H$ is $1.8 \times 10^{- 5} M$ .

Discussion

38.	Half lives of two isotopes X and Y of a material are known to be 2×109 years and 4×109 years respectively. If a planet forms with equal number of these isotopes , estimate the current age of the planet, given that currently the material has 20% of X and 80% of Y by number
Answer» Half lives of two isotopes X and Y of a material are known to be $2 \times 10^{9}$ years and $4 \times 10^{9}$ years respectively. If a planet forms with equal number of these isotopes , estimate the current age of the planet, given that currently the material has 20% of X and 80% of Y by number

Discussion

39.	Which of the following molecules is not planar?
Answer» Which of the following molecules is not planar?

Discussion

40.	Two different adiabetic paths for the same gas intersects two isothermal paths T1 and T2 as shown in the P−V diagram. Then Va/Vd is equal to
Answer» Two different adiabetic paths for the same gas intersects two isothermal paths $T_{1}$ and $T_{2}$ as shown in the $P - V$ diagram. Then $V_{a} / V_{d}$ is equal to

Discussion

41.	Which of the following is not a resonance stucture of the others?
Answer» Which of the following is not a resonance stucture of the others?

Discussion

42.	58. A 5M solution is diluted from1 litre to a volume of 100 litres ,the normality of the solution will be
Answer» 58. A 5M solution is diluted from1 litre to a volume of 100 litres ,the normality of the solution will be

Discussion

43.	53 Maximum bond angle is present in 1)NO3 2)NO2 3)NO2 4)NO2+
Answer» 53 Maximum bond angle is present in 1)NO3 2)NO2 3)NO2 4)NO2+

Discussion

44.	The potential energy of a particle varies the distance x from a fixed origin as, where A and B are dimensional constants, then find the dimensional formula for AB.
Answer» The potential energy of a particle varies the distance x from a fixed origin as , where A and B are dimensional constants, then find the dimensional formula for AB.

Discussion

45.	According to Bohr's theory, What is the angular momentum of an electron in 5 th orbit?
Answer» According to Bohr's theory, What is the angular momentum of an electron in $5 th$ orbit?

Discussion

46.	What are the major products formed in elimination addition reactions of aryl Halides with nanh2 and liquid ammonia?
Answer» What are the major products formed in elimination addition reactions of aryl Halides with nanh2 and liquid ammonia?

Discussion

47.	A water sample has ppm level concentration of the following metals: Fe= 0.2; Mn= 5.0; Cu= 3.0; Zn= 5.0. The metal that makes the water sample unsuitable for drinking is:
Answer» A water sample has ppm level concentration of the following metals: Fe= 0.2; Mn= 5.0; Cu= 3.0; Zn= 5.0. The metal that makes the water sample unsuitable for drinking is:

Discussion

48.	What volume of CCl_4 (d = 1.6 g/cc) contains 6.02 × 10^{25} CCl_4 molecules (Cl = 35.5)?
Answer» What volume of CCl_4 (d = 1.6 g/cc) contains 6.02 × 10^{25} CCl_4 molecules (Cl = 35.5)?

Discussion

49.	Structure of IF+4 and hybridization of iodine in this structure are
Answer» Structure of $I F_{4}^{+}$ and hybridization of iodine in this structure are

Discussion

50.	An aqueous solution contains 0.10 M H2S and 0.20 M HCl. If the equilibrium constants for the formation of HS−from H2S is 1.0×10−7 and that of S2− from HS− ions is 1.2×10−13, then the concentration of S2− ions in aqueous solution is:
Answer» An aqueous solution contains 0.10 M $H_{2} S$ and 0.20 M $H C l$ . If the equilibrium constants for the formation of $H S^{-}$ from $H_{2} S$ is $1.0 \times 10^{- 7}$ and that of $S^{2 -}$ from $H S^{-}$ ions is $1.2 \times 10^{- 13}$ , then the concentration of $S^{2 -}$ ions in aqueous solution is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

12. 0.1gm of sample of CaCO3 is treated with 20ml of 0.1N HCl solution and excess of HCl is neutralized with 5ml of 0.1M Ca(OH)2.Find the percentage of CaCO3

What is ionisation energy and separation energy? How to find them?

Why in flourite structure calcium forms lattice??Why in CsCl structure Cl forms lattice though the size of Cs is large?

Q. How many moles of alumina can be formed when a mixture of 0.36 mol of Aluminium and 0.36 mol of Oxygen are ignited. Which substance and how much it's in excess of that required ?

What are the characteristics exhibited by a pure substance?

Approximately what is the probability that, at room temperature (300 K), an electron at the top of the highest filled band in diamond (an insulator) will jump the energy gap Eg? For diamond, Eg is 5.5 eV.

π bonding is not involved in

The correct electronic configuration for Eu2+ is

why normality= molarity * n-factor

The complex [cu(nh3)4]2+ has which configuration and how much paired electrons

73.What is the hybridization is present in the Pcl3br2 and Pcl2br3 . Explain with proper reason and diagram.

Write free radical mechanism for polymerization of ethene

Volume of an ideal gas is to be decreased by 10% by increase of pressure by x% under isothermal condition. Thus, x is

11. Is deltaH of reaction , fusuon,atomisation etc arr same . which value of h to be used in the entropy equation gibbs equation etc.

Oxidation number of oxygen is +1 in which compound?

In preparation of Nitrobenzene, role of Nitric acid is- a) Oxidiser, b) Reducer, c) Acid, d) Base

ques. 0.59g of silver salt of an organic acid (molar mass 210) on ignition gave 0.36g of pure silver. the basicity of acid is : (a)2 (b)3 (c)4 (d)

29 g of butane is burnt in excess of O2 at STP. Find the volume of the CO2 gas produced at STP.

48gram of oxygen is obtined on heating KClO3 when it is 50% pure. Find mass of KClO3 required

31.According to bohar principal the angular moment of electrons in the 6th is

Which one of the following does not haveintermolecular H-bonding ?

The equilibrium constant for the reaction given below is 2.0×10−7 at 300 K. PCl5(g)⇌PCl3(g)+Cl2(g). Calculate the value of |S∘| (in J mol−1 K−1) if ΔH∘=28.4 kJ mol−1(Give your answer upto one deimal only)

5/6 lies between

The reaction H2S+H2O2→2H2O+S shows

104. What is the most probable distance from thenucleus at which a 2p electron will be found in theH-atom? (1) 53 pm (3) 212 pm (2) 106 pm (4) 26.5 pm

What do you mean by dynamic equilibrium!

Find the solution set of the following inequation \log_{10}(20-x)≥ \log_{10}x

Two separate air bubbles of radii 0.004 m and 0.002 m forms of the same liquid (surface tension 0.07 N/m) come together to form a double bubble. Find the radius of curvature of the internal film surface common to both the bubbles.

Which of the following hydride does NOT follow the Law of definite proportions?

What does km value and vmax represent in a graph?

In gaseous triethylamine the′′−C−N−C−′′ bond angle is degree.

When CrI3 is treated with Cl2 in basic medium, the following reaction takes place. CrI3+KOH+Cl2→K2Cr2O7+KIO4+KCl+H2O To produce 81 mols of potassium chloride, how many mols of CrI3 should be taken?

22. Which of the following octahedral complexes do not show geometrical isomerism? Options: [Co(NH3)3Cl3] [PtCl2(NH3)4] Correct [Cr(H2O)5Cl]2+ [Co(en)3]3+

The molecular formula of a compound is C10H10 its structure has 5 double bonds in conjugations and a cycle is also there is this compound aromatic

Which of the following haloalkanes has the shortest C−X bond length?

Calculate [OH−] of 0.01 M ammonium hydroxide solution. The ionization constant for NH4OH is 1.8×10−5 M.

Half lives of two isotopes X and Y of a material are known to be 2×109 years and 4×109 years respectively. If a planet forms with equal number of these isotopes , estimate the current age of the planet, given that currently the material has 20% of X and 80% of Y by number

Which of the following molecules is not planar?

Two different adiabetic paths for the same gas intersects two isothermal paths T1 and T2 as shown in the P−V diagram. Then Va/Vd is equal to

Which of the following is not a resonance stucture of the others?

58. A 5M solution is diluted from1 litre to a volume of 100 litres ,the normality of the solution will be

53 Maximum bond angle is present in 1)NO3 2)NO2 3)NO2 4)NO2+

The potential energy of a particle varies the distance x from a fixed origin as​​, where A and B are dimensional constants, then find the dimensional formula for AB.

According to Bohr's theory, What is the angular momentum of an electron in 5 th orbit?

What are the major products formed in elimination addition reactions of aryl Halides with nanh2 and liquid ammonia?

A water sample has ppm level concentration of the following metals: Fe= 0.2; Mn= 5.0; Cu= 3.0; Zn= 5.0. The metal that makes the water sample unsuitable for drinking is:

What volume of CCl_4 (d = 1.6 g/cc) contains 6.02 × 10^{25} CCl_4 molecules (Cl = 35.5)?

Structure of IF+4 and hybridization of iodine in this structure are

An aqueous solution contains 0.10 M H2S and 0.20 M HCl. If the equilibrium constants for the formation of HS−from H2S is 1.0×10−7 and that of S2− from HS− ions is 1.2×10−13, then the concentration of S2− ions in aqueous solution is:

The potential energy of a particle varies the distance x from a fixed origin as, where A and B are dimensional constants, then find the dimensional formula for AB.