46295 + Interview Questions in Chemistry

1.	The solubility product of BaSO4 at 25∘ C is 1.0 × 10−9. What would be the concentration of H2SO4 necessary to precipitate BaSO4 from a solution of 0.01M Ba2+ ions ?
Answer» The solubility product of $B a S O_{4}$ at $25^{\circ} C$ is $1.0 \times 10^{- 9}$ . What would be the concentration of $H_{2} S O_{4}$ necessary to precipitate $B a S O_{4}$ from a solution of $0.01 M$ $B a^{2 +}$ ions ?

1.

The solubility product of BaSO4 at 25∘ C is 1.0 × 10−9. What would be the concentration of H2SO4 necessary to precipitate BaSO4 from a solution of 0.01M Ba2+ ions ?

Answer»

The solubility product of $B a S O_{4}$ at $25^{\circ} C$ is $1.0 \times 10^{- 9}$ . What would be

the concentration of $H_{2} S O_{4}$ necessary to precipitate $B a S O_{4}$ from a solution

of $0.01 M$ $B a^{2 +}$ ions ?

2.	What are inorganic compounds?
Answer» What are inorganic compounds?

Discussion

3.	The relative density of mercury is 13.6. Find its density. Given density of water = 1000 kg/m3.
Answer» The relative density of mercury is 13.6. Find its density. Given density of water = $1000 k g / m^{3}$ .

Discussion

4.	The species that does not contain peroxide ions is:
Answer» The species that does not contain peroxide ions is:

Discussion

5.	Number of ∠FIF angles equal to 90o and less than 90o in IF7 is x and y respectively. The value of x−y is
Answer» Number of $∠ F I F$ angles equal to $90^{o}$ and less than $90^{o}$ in $I F_{7}$ is $x$ and $y$ respectively. The value of $x - y$ is

Discussion

6.	Predict the order of Δo for the following compounds:- (i) [Cr(H2O)6]3+ (ii) [Cr(CN)2(H2O)4]− (iii) [Cr(CN)4(H2O)2]− (iv) [Cr(CN)6]3−
Answer» Predict the order of $Δ_{o}$ for the following compounds:- (i) $[C r (H_{2} O)_{6}]^{3 +}$ (ii) $[C r (C N)_{2} (H_{2} O)_{4}]^{-}$ (iii) $[C r (C N)_{4} (H_{2} O)_{2}]^{-}$ (iv) $[C r (C N)_{6}]^{3 -}$

Discussion

7.	Brass is an alloy of:
Answer» Brass is an alloy of:

Discussion

8.	The correct order of bond angles (smallest first) in H2O, NH3, BF3 and SiH4 is:
Answer» The correct order of bond angles (smallest first) in $H_{2} O, N H_{3}, B F_{3}$ and $S i H_{4}$ is:

Discussion

9.	The molar solubility (molL−1) of a sparingly soluble salt MX4 is ′S′. The corresponding solubility product is KSP . ′S′ is given in terms of KSP by the relation
Answer» The molar solubility ( $m o l L^{- 1})$ of a sparingly soluble salt $M X_{4}$ is $^{'} S^{'}$ . The corresponding solubility product is $K_{S P}$ . $^{'} S^{'}$ is given in terms of $K_{S P}$ by the relation

Discussion

10.	Column 1, 2 and 3 contains symbol of the element atomic number and name respectively. Column 1 Column 2 Column 3(I)Lr(i)23(P)Zinc(II)Mn(ii)103(Q)Vanadium(III)Zn(iii)25(R)Unniltrium (IUPAC name)(IV)V(iv)30(S)Manganese The correct set which is correspond to a d-block element but not a transition metal:
Answer» Column 1, 2 and 3 contains symbol of the element atomic number and name respectively. $\begin{matrix} C o l u m n 1 & C o l u m n 2 & C o l u m n 3 (I) & L r & (i) & 23 & (P) & Z i n c (I I) & M n & (i i) & 103 & (Q) & V a n a d i u m (I I I) & Z n & (i i i) & 25 & (R) & U n n i l t r i u m (I U P A C n a m e) (I V) & V & (i v) & 30 & (S) & M a n g a n e s e \end{matrix}$ The correct set which is correspond to a d-block element but not a transition metal:

Discussion

11.	Why do alkynes under go nucleophilic addition reaction . while alkynes don't do so.
Answer» Why do alkynes under go nucleophilic addition reaction . while alkynes don't do so.

Discussion

12.	Which of the following alkyl group has the maximum hyperconjugation effect and least +I effect?
Answer» Which of the following alkyl group has the maximum hyperconjugation effect and least +I effect?

Discussion

13.	Which of the following is not correct
Answer» Which of the following is not correct

Discussion

14.	In a hydrogen atom, if the energy of an electron in ground state is −13.6 eV, then its energy in the 2nd excited state is
Answer» In a hydrogen atom, if the energy of an electron in ground state is $- 13.6 eV$ , then its energy in the 2nd excited state is

Discussion

15.	How much should the pressure be increased in order to decrease the volume of a gas by five percent at a constant temperature 5% 5.2 %
Answer» How much should the pressure be increased in order to decrease the volume of a gas by five percent at a constant temperature 5% 5.2 %

Discussion

16.	What is the variations between viscosity and surface tension of an ideal fluid?
Answer» What is the variations between viscosity and surface tension of an ideal fluid?

Discussion

17.	Why cu is smaller when compared to na?
Answer» Why cu is smaller when compared to na?

Discussion

18.	The oxidation number of sulphur in dithionate ion is:
Answer» The oxidation number of sulphur in dithionate ion is:

Discussion

19.	Can you explain (every small detail) about the hybridisation of Cr in K2Cr2O7 being d3s? Why d3s and not d5?
Answer» Can you explain (every small detail) about the hybridisation of Cr in K2Cr2O7 being d3s? Why d3s and not d5?

Discussion

20.	What is the number of Tetrahedral Void in CCP 3D structure?
Answer» What is the number of Tetrahedral Void in CCP 3D structure?

Discussion

21.	Number of carbons in selected principal carbon chain for IUPAC nomenclature will be
Answer» Number of carbons in selected principal carbon chain for IUPAC nomenclature will be

Discussion

22.	Following reaction, (CH3)3CBr + H2O → (CH3)3COH + HBr is an example of
Answer» Following reaction, $(C H_{3})_{3} C B r + H_{2} O \to (C H_{3})_{3} C O H + H B r$ is an example of

22.

Following reaction, (CH3)3CBr + H2O → (CH3)3COH + HBr is an example of

Answer»

Following reaction, $(C H_{3})_{3} C B r + H_{2} O \to (C H_{3})_{3} C O H + H B r$ is an example of

Discussion

23.	Explain why Cl-Cl bond is stronger than F-F bond?
Answer» Explain why Cl-Cl bond is stronger than F-F bond?

Discussion

24.	What are hypervalent species?
Answer» What are hypervalent species?

Discussion

25.	Question 23 Which of the following have identical bond order? (a) CN− (b) NO+ (c) O−2 (d) O2−2
Answer» Question 23 Which of the following have identical bond order? (a) $C N^{-}$ (b) $N O^{+}$ (c) $O_{2}^{-}$ (d) $O_{2}^{2 -}$

25.

Question 23 Which of the following have identical bond order? (a) CN− (b) NO+ (c) O−2 (d) O2−2

Answer»

Question 23

Which of the following have identical bond order?

(a) $C N^{-}$

(b) $N O^{+}$

(c) $O_{2}^{-}$

(d) $O_{2}^{2 -}$

Discussion

26.	Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
Answer» Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?

Discussion

27.	What is the van't hoff factor for potassium sulphate in very dilute aqueous solution
Answer» What is the van't hoff factor for potassium sulphate in very dilute aqueous solution

Discussion

28.	hello sir/madam i am a student of byjus the learning app i want the answer of a question related to mole concept from the first chapter of the 11th ncert textbook my question is calculate the no.of molecules of hydrogen in 1120ml of hydrogen in stp
Answer» hello sir/madam i am a student of byjus the learning app i want the answer of a question related to mole concept from the first chapter of the 11th ncert textbook my question is calculate the no.of molecules of hydrogen in 1120ml of hydrogen in stp

28.

hello sir/madam i am a student of byjus the learning app i want the answer of a question related to mole concept from the first chapter of the 11th ncert textbook my question is calculate the no.of molecules of hydrogen in 1120ml of hydrogen in stp

Answer»

hello sir/madam

i am a student of byjus the learning app

i want the answer of a question related to mole concept from the first chapter of the 11th ncert textbook

my question is

calculate the no.of molecules of hydrogen in 1120ml of hydrogen in stp

Discussion

29.	For a certain reaction involving single reactant it is found that [A]o(t1/2)1/2 remain constant. Where [Ao] is the initial concentration of the reactant and t1/2 is the half life period.The order of the reaction is :- a. 1 b. 0 c. 2 d. 3
Answer» For a certain reaction involving single reactant it is found that [A]_o(t_1/2)^1/2remain constant. Where [A_o] is the initial concentration of the reactant and t_1/2 is the half life period.The order of the reaction is :- a. 1 b. 0 c. 2 d. 3

29.

For a certain reaction involving single reactant it is found that [A]o(t1/2)1/2 remain constant. Where [Ao] is the initial concentration of the reactant and t1/2 is the half life period.The order of the reaction is :- a. 1 b. 0 c. 2 d. 3

Answer»

For a certain reaction involving single reactant it is found that [A]_o(t_1/2)^1/2remain constant. Where [A_o] is the initial concentration of the reactant and t_1/2 is the half life period.The order of the reaction is :-

a. 1

b. 0

c. 2

d. 3

Discussion

30.	Which one of the following statements is correct when SO2 is passed through acidified K2Cr2O7 solution?
Answer» Which one of the following statements is correct when $S O_{2}$ is passed through acidified $K_{2} C r_{2} O_{7}$ solution?

Discussion

31.	Which of the following statement is true with respect to 3d series?
Answer» Which of the following statement is true with respect to 3d series?

Discussion

32.	CH3CNH3O+−−−→ΔAC2H5Clmoist−−−→Ag2OBA+BConH2SO4−−−−−−−→ΔC. Number metamers of ‘C’
Answer» $C H_{3} C N H_{3} O^{+} - -- \to Δ A C_{2} H_{5} C l m o i s t - -- \to A g_{2} O B A + B C o n H_{2} S O_{4} - ------ \to Δ C .$ Number metamers of ‘C’

32.

CH3CNH3O+−−−→ΔAC2H5Clmoist−−−→Ag2OBA+BConH2SO4−−−−−−−→ΔC. Number metamers of ‘C’

Answer»

$C H_{3} C N H_{3} O^{+} - -- \to Δ A C_{2} H_{5} C l m o i s t - -- \to A g_{2} O B A + B C o n H_{2} S O_{4} - ------ \to Δ C .$

Number metamers of ‘C’

Discussion

33.	For H2O(l) (1bar,373K) → H2O(g) (1bar,373K).The correct set of thermodynamic parameter is
Answer» For $H_{2} O (l) (1 b a r, 373 K) \to H_{2} O (g) (1 b a r, 373 K)$ .The correct set of thermodynamic parameter is

Discussion

34.	An electron has kinetic energy 2.8×10−23J de-Broglie wavelength will be nearly (m_e = 9.1 \times 10^{-31} kg\)
Answer» An electron has kinetic energy $2.8 \times 10^{- 23} J$ de-Broglie wavelength will be nearly (m_e = 9.1 \times 10^{-31} kg\)

Discussion

35.	Correct statement among the following is
Answer» Correct statement among the following is

Discussion

36.	Which of the following compounds decomposes NaHCO3 solution?
Answer» Which of the following compounds decomposes NaHCO₃ solution?

Discussion

37.	How is the variability in oxidation states of transition metals different from that of non-transition metals? Illustrate with examples.
Answer» How is the variability in oxidation states of transition metals different from that of non-transition metals? Illustrate with examples.

Discussion

38.	Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.
Answer» Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.

38.

Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.

Answer»

Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.

Discussion

39.	The species which react(s) with silica/glass in presence of moisture :
Answer» The species which react(s) with silica/glass in presence of moisture :

Discussion

40.	From the following sets of quantum numbers, state which are possible?
Answer» From the following sets of quantum numbers, state which are possible?

Discussion

41.	Thermodynamics mainly deals with (a) interrelation of various forms of energy and their transformation from one form to another. (b) energy changes in the processes which depend only on initial and final states of the microscopic systems containing a few molecules. (c) how and at what rate these energy transformations are carried out. (d) the system in equilibrium state or moving from one equilibrium state to another equilibrium state.
Answer» Thermodynamics mainly deals with (a) interrelation of various forms of energy and their transformation from one form to another. (b) energy changes in the processes which depend only on initial and final states of the microscopic systems containing a few molecules. (c) how and at what rate these energy transformations are carried out. (d) the system in equilibrium state or moving from one equilibrium state to another equilibrium state.

Discussion

42.	The gaseous mixture sealed by Miller in the spark chamber:
Answer» The gaseous mixture sealed by Miller in the spark chamber:

Discussion

43.	Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol. Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Answer» Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol. Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Discussion

44.	In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:
Answer» In the reaction with $H C l$ , an alkene reacts in accordance with the Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:

Discussion

45.	How many litres of O2 at STP are needed for the complete combustion of 80 g of liquid hexane (C6H14)? (Given:C6H14 +O2→CO2 + H2O)
Answer» How many litres of $O_{2}$ at STP are needed for the complete combustion of $80 g$ of liquid hexane ( $C_{6} H_{14})$ ? ( $G i v e n : C_{6} H_{14} + O_{2} \to C O_{2} + H_{2} O$ )

Discussion

46.	Match the following: Column IColumn II(1)I2(i) Ionic solid(2)Cub(ii) Covalent solid(3) Diamond(iii) Molecular solid(4) ZnS(iv) Metallic solid
Answer» Match the following: $\begin{matrix} C o l u m n I & C o l u m n I I (1) I^{2} & (i) I o n i c s o l i d (2) C u & b (i i) C o v a l e n t s o l i d (3) D i a m o n d & (i i i) M o l e c u l a r s o l i d (4) Z n S & (i v) M e t a l l i c s o l i d \end{matrix}$

Discussion

47.	what is the difference between Ψ and Ψ^2 ?
Answer» what is the difference between Ψ and Ψ^2 ?

Discussion

48.	Prove that the altitude of the right circular cone of maximum volume that can be inscribed 8 in a sphere of radius r is 4r3. Also show that the maximum volume of the cone is 827 of the volume of the sphere.
Answer» Prove that the altitude of the right circular cone of maximum volume that can be inscribed 8 in a sphere of radius r is $\frac{4 r}{3}$ . Also show that the maximum volume of the cone is $\frac{8}{27}$ of the volume of the sphere.

Discussion

49.	Find the mass of each element in 7.84g of FeSO4.(NH4)2SO4.6H2O. What will be the volume of O2 at NTP in this sample
Answer» Find the mass of each element in 7.84g of FeSO4.(NH4)2SO4.6H2O. What will be the volume of O2 at NTP in this sample

Discussion

50.	How to compare between alkanamine and ammonia in terms of basicity ?
Answer» How to compare between alkanamine and ammonia in terms of basicity ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The solubility product of BaSO4 at 25∘ C is 1.0 × 10−9. What would be the concentration of H2SO4 necessary to precipitate BaSO4 from a solution of 0.01M Ba2+ ions ?

What are inorganic compounds?

The relative density of mercury is 13.6. Find its density. Given density of water = 1000 kg/m3.

The species that does not contain peroxide ions is:

Number of ∠FIF angles equal to 90o and less than 90o in IF7 is x and y respectively. The value of x−y is

Predict the order of Δo for the following compounds:- (i) [Cr(H2O)6]3+ (ii) [Cr(CN)2(H2O)4]− (iii) [Cr(CN)4(H2O)2]− (iv) [Cr(CN)6]3−

Brass is an alloy of:

The correct order of bond angles (smallest first) in H2O, NH3, BF3 and SiH4 is:

The molar solubility (molL−1) of a sparingly soluble salt MX4 is ′S′. The corresponding solubility product is KSP . ′S′ is given in terms of KSP by the relation

Why do alkynes under go nucleophilic addition reaction . while alkynes don't do so.

Which of the following alkyl group has the maximum hyperconjugation effect and least +I effect?

Which of the following is not correct

In a hydrogen atom, if the energy of an electron in ground state is −13.6 eV, then its energy in the 2nd excited state is

How much should the pressure be increased in order to decrease the volume of a gas by five percent at a constant temperature 5% 5.2 %

What is the variations between viscosity and surface tension of an ideal fluid?

Why cu is smaller when compared to na?

The oxidation number of sulphur in dithionate ion is:

Can you explain (every small detail) about the hybridisation of Cr in K2Cr2O7 being d3s? Why d3s and not d5?

What is the number of Tetrahedral Void in CCP 3D structure?

Number of carbons in selected principal carbon chain for IUPAC nomenclature will be

Following reaction, (CH3)3CBr + H2O → (CH3)3COH + HBr is an example of

Explain why Cl-Cl bond is stronger than F-F bond?

What are hypervalent species?

Question 23 Which of the following have identical bond order? (a) CN− (b) NO+ (c) O−2 (d) O2−2

Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?

What is the van't hoff factor for potassium sulphate in very dilute aqueous solution

hello sir/madam i am a student of byjus the learning app i want the answer of a question related to mole concept from the first chapter of the 11th ncert textbook my question is calculate the no.of molecules of hydrogen in 1120ml of hydrogen in stp

For a certain reaction involving single reactant it is found that [A]o(t1/2)1/2 remain constant. Where [Ao] is the initial concentration of the reactant and t1/2 is the half life period.The order of the reaction is :- a. 1 b. 0 c. 2 d. 3

Which one of the following statements is correct when SO2 is passed through acidified K2Cr2O7 solution?

Which of the following statement is true with respect to 3d series?

CH3CNH3O+−−−→ΔAC2H5Clmoist−−−→Ag2OBA+BConH2SO4−−−−−−−→ΔC. Number metamers of ‘C’

For H2O(l) (1bar,373K) → H2O(g) (1bar,373K).The correct set of thermodynamic parameter is

An electron has kinetic energy 2.8×10−23J de-Broglie wavelength will be nearly (m_e = 9.1 \times 10^{-31} kg\)

Correct statement among the following is

Which of the following compounds decomposes NaHCO3 solution?

How is the variability in oxidation states of transition metals different from that of non-transition metals? Illustrate with examples.

Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.

The species which react(s) with silica/glass in presence of moisture :

From the following sets of quantum numbers, state which are possible?

The gaseous mixture sealed by Miller in the spark chamber:

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:

How many litres of O2 at STP are needed for the complete combustion of 80 g of liquid hexane (C6H14)? (Given:C6H14 +O2→CO2 + H2O)

Match the following: Column IColumn II(1)I2(i) Ionic solid(2)Cub(ii) Covalent solid(3) Diamond(iii) Molecular solid(4) ZnS(iv) Metallic solid

what is the difference between Ψ and Ψ^2 ?

Prove that the altitude of the right circular cone of maximum volume that can be inscribed 8 in a sphere of radius r is 4r3. Also show that the maximum volume of the cone is 827 of the volume of the sphere.

Find the mass of each element in 7.84g of FeSO4.(NH4)2SO4.6H2O. What will be the volume of O2 at NTP in this sample

How to compare between alkanamine and ammonia in terms of basicity ?