46295 + Interview Questions in Chemistry

1.	1.Boiling point sequence in BeCl2, MgCl2, CaCl2, BaCl2.Give reason
Answer» 1.Boiling point sequence in BeCl2, MgCl2, CaCl2, BaCl2.Give reason

Discussion

2.	How to determine that n which pair of ions both the species contain S-S bond ? 1)S_2O_7^{-2} , S_2O_3^{-2} 2)S_4O_6^{-2} , S_2O_3^{-2}
Answer» How to determine that n which pair of ions both the species contain S-S bond ? 1)S_2O_7^{-2} , S_2O_3^{-2} 2)S_4O_6^{-2} , S_2O_3^{-2}

Discussion

3.	19.For gas a in a calorie meter heat evolved is 250 kJ/Mol. For 0.2 Mol of A temperature rise from 298 K to 300 K. Find out the heat capacity of calorie meter is?
Answer» 19.For gas a in a calorie meter heat evolved is 250 kJ/Mol. For 0.2 Mol of A temperature rise from 298 K to 300 K. Find out the heat capacity of calorie meter is?

Discussion

4.	10 In the electrolysis of CuSO4 solution ,how many gram of Cu plated out on the cathode in the time that it takes to liberate 5.6 litre of O2 gas ,measure at 1 atm and 273K,at the annode?
Answer» 10 In the electrolysis of CuSO4 solution ,how many gram of Cu plated out on the cathode in the time that it takes to liberate 5.6 litre of O2 gas ,measure at 1 atm and 273K,at the annode?

Discussion

5.	24. Cyclohex 2- ene1 one on reaction with ithium aluminium hydride and sodium borohydide gives?
Answer» 24. Cyclohex 2- ene1 one on reaction with ithium aluminium hydride and sodium borohydide gives?

Discussion

6.	A hydrocarbon of molecularly formula c5 h10 pn monochlronition gives one product and on dichhlorination dives three product identify the hydrocarbon
Answer» A hydrocarbon of molecularly formula c5 h10 pn monochlronition gives one product and on dichhlorination dives three product identify the hydrocarbon

Discussion

7.	In the reaction, C6H5CHO+(CH3CO)2OCH3COONa−−−−−−−−→180∘CX, 'X' is
Answer» In the reaction, $C_{6} H_{5} C H O + (C H_{3} C O)_{2} O C H_{3} C O O N a - ------- \to 180^{\circ} C X$ , 'X' is

Discussion

8.	Write down the electronic configuration of Cr3+ Pm3+ Cu+ Ce4+ Co2+ Lu2+ Mn2+ Th4+
Answer» Write down the electronic configuration of $C r^{3 +}$ $P m^{3 +}$ $C u^{+}$ $C e^{4 +}$ $C o^{2 +}$ $L u^{2 +}$ $M n^{2 +}$ $T h^{4 +}$

8.

Write down the electronic configuration of Cr3+ Pm3+ Cu+ Ce4+ Co2+ Lu2+ Mn2+ Th4+

Answer»

Write down the electronic configuration of

$C r^{3 +}$

$P m^{3 +}$

$C u^{+}$

$C e^{4 +}$

$C o^{2 +}$

$L u^{2 +}$

$M n^{2 +}$

$T h^{4 +}$

Discussion

9.	under identical conditions of pressure and temperature2L of gaseous mixture (H2 and CH4) effuses through a hole in 5 min whereas 2 litres of a gasX of molecular mass 36 takes 10 minutes to effuses through the same hole. The mole ratio of H2: CH4 in the mixture i
Answer» under identical conditions of pressure and temperature2L of gaseous mixture (H2 and CH4) effuses through a hole in 5 min whereas 2 litres of a gasX of molecular mass 36 takes 10 minutes to effuses through the same hole. The mole ratio of H2: CH4 in the mixture i

Discussion

10.	What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?
Answer» What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?

Discussion

11.	A:\:The number of moles KMnO_{4 } that will be needed to react with 1 mole of HCN ( while HCN oxidises into CO_3^{2-} and NO_3^- ) in acidic medium is 0.5 . R : Because the n-factor of KMnO_4 in acidic medium is 5 and the n-factor of HCN is 10 . So, molar ratio of KMnO_4 to HCN is 1:2.
Answer» A:\:The number of moles KMnO_{4 } that will be needed to react with 1 mole of HCN ( while HCN oxidises into CO_3^{2-} and NO_3^- ) in acidic medium is 0.5 . R : Because the n-factor of KMnO_4 in acidic medium is 5 and the n-factor of HCN is 10 . So, molar ratio of KMnO_4 to HCN is 1:2.

Discussion

12.	Alcohols and phenols react with Grignard reagent and form:
Answer» Alcohols and phenols react with Grignard reagent and form:

Discussion

13.	The order of molar ionic conductances of the octahedral complexes is- I. PtCl4 . 5NH3 II. PtCl4 . 4NH3 III. PtCl4 . 3NH3 IV. PtCl4 . 2NH3
Answer» The order of molar ionic conductances of the octahedral complexes is- I. PtCl4 . 5NH3 II. PtCl4 . 4NH3 III. PtCl4 . 3NH3 IV. PtCl4 . 2NH3

Discussion

14.	The bond dissociation energies of X2,Y2 and XY are in the ratio of 1:0.5:1ΔH for the formation of XY is−200kJ mol−1. The bond dissociation energy of X2 will be:
Answer» The bond dissociation energies of $X_{2}, Y_{2}$ and $X Y$ are in the ratio of $1 : 0.5 : 1$ $Δ H$ for the formation of $X Y$ is $- 200 k J {mol}^{- 1}$ . The bond dissociation energy of $X_{2}$ will be:

Discussion

15.	Peroxide linkage is present in:
Answer» Peroxide linkage is present in:

Discussion

16.	A sample of 2,3-dibromo-3-methylpentane is heated with zinc dust. Identify which is the structure that represents the organic product formed in the reaction.
Answer» A sample of 2,3-dibromo-3-methylpentane is heated with zinc dust. Identify which is the structure that represents the organic product formed in the reaction.

Discussion

17.	Match the List-I with List-II by using the postulates of VBT of complexesList−IList−II(p) [Ni(CN)4]2−(1) sp3 hybridization(Q) [Ni(CO)4](2) dsp2 hybridization(R) [Cu(NH3)4]2+(3) μ=0 BM(S) [Pd(Cl)4]2−(4) μ=1.732 BM
Answer» Match the List-I with List-II by using the postulates of VBT of complexes $\begin{matrix} L i s t - I & L i s t - I I (p) [N i (C N)_{4}]^{2 -} & (1) s p^{3} h y b r i d i z a t i o n (Q) [N i (C O)_{4}] & (2) d s p^{2} h y b r i d i z a t i o n (R) [C u (N H_{3})_{4}]^{2 +} & (3) μ = 0 B M (S) [P d (C l)_{4}]^{2 -} & (4) μ = 1.732 B M \end{matrix}$

Discussion

18.	The EMF of the cell M\|Mn+(0.02 M)\|\|H+(1 M)\|H2(g)(1 atm),Pt at 25 oC is 0.81 V. The valency of the metal if the standard oxidation potential of the metal is 0.76 V?(log0.02=−1.7)
Answer» The EMF of the cell $M \| M^{n +} (0.02 M) \| \| H^{+} (1 M) \| H_{2} (g) (1 a t m), P t$ at $25^{o} C$ is $0.81 V$ . The valency of the metal if the standard oxidation potential of the metal is $0.76 V$ ? ( $log 0.02 = - 1.7$ )

Discussion

19.	A vessel of capactity 1 dm3 contains 1.03×1023 H2 molecules exerting a pressure of 101.325 kPa. Calculate RMS speed and average speed.
Answer» A vessel of capactity $1 d m^{3}$ contains $1.03 \times 10^{23} H_{2}$ molecules exerting a pressure of $101.325 kPa$ . Calculate RMS speed and average speed.

Discussion

20.	The reagent used to convertCH3CH2COOH→CH3CH2CH2OH is
Answer» The reagent used to convert $C H_{3} C H_{2} C O O H \to C H_{3} C H_{2} C H_{2} O H$ is

Discussion

21.	The number of revolution per second made by an electron in the first Bohr orbit of the hydrogen atom is 6.5×103k. The value k is (Integer only)
Answer» The number of revolution per second made by an electron in the first Bohr orbit of the hydrogen atom is $6.5 \times 10^{3 k}$ . The value $k$ is (Integer only)

Discussion

22.	Correct order of basic strengths of given amines (1)Me2NH MeNH2 Me3N> NH3(Protic solvent) (2) Et2NH EtH EtNH2 NH3>(Protic solvent) (3) Me3N>Me NH Me NH2> NH3(Gas phase) (4) All are correct
Answer» Correct order of basic strengths of given amines (1)Me2NH MeNH2 Me3N> NH3(Protic solvent) (2) Et2NH EtH EtNH2 NH3>(Protic solvent) (3) Me3N>Me NH Me NH2> NH3(Gas phase) (4) All are correct

Discussion

23.	Identify compound X in the following aqueous of reaction:
Answer» Identify compound X in the following aqueous of reaction:

Discussion

24.	Among the following coordinate bond is present in:
Answer» Among the following coordinate bond is present in:

Discussion

25.	The major product of the above reaction is:
Answer» The major product of the above reaction is:

Discussion

26.	13 A system changes from state X to Y with a change in internal energy measuring to 25 kJ/mol, by a reversible path and returns from Y to X by an irreversible path. What will be the net change in internal energy ? A 25 kJ B >25 kJ C
Answer» 13 A system changes from state X to Y with a change in internal energy measuring to 25 kJ/mol, by a reversible path and returns from Y to X by an irreversible path. What will be the net change in internal energy ? A 25 kJ B >25 kJ C <25kJ D -5 kJ

Discussion

27.	If reduction potential of an element is negative of oxidation potential, then why the oxidation potential of water is -1.23 and its reduction potential is -0.83?
Answer» If reduction potential of an element is negative of oxidation potential, then why the oxidation potential of water is -1.23 and its reduction potential is -0.83?

Discussion

28.	20 mL of 0.1 M Bacl2 is mixed with 30 mL of 0.2 M Al2(SO4)3. What is the weight of BaSO4 formed?( A of Ba=137).
Answer» 20 mL of 0.1 M Bacl2 is mixed with 30 mL of 0.2 M Al2(SO4)3. What is the weight of BaSO4 formed?( A of Ba=137).

Discussion

29.	KpKc for the following reaction will be CO(g)+12O2(g)→CO2(g)
Answer» $\frac{K_{p}}{K_{c}}$ for the following reaction will be $C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$

Discussion

30.	20. Why the solutions physical state depends on siolvent physical state
Answer» 20. Why the solutions physical state depends on siolvent physical state

Discussion

31.	Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show cleavage property?
Answer» Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show cleavage property?

Discussion

32.	Calculate the number of Cl ion in 100 ml of the solution which is formed by mixing of 200ml 2(M) NaCl(aq) solution, 800 ml 1(M) MgCl_{2 }(aq) solution an 1L 5.3 × 10^{-4 }(M) CCl_{4 }(aq) solution.
Answer» Calculate the number of Cl ion in 100 ml of the solution which is formed by mixing of 200ml 2(M) NaCl(aq) solution, 800 ml 1(M) MgCl_{2 }(aq) solution an 1L 5.3 × 10^{-4 }(M) CCl_{4 }(aq) solution.

Discussion

33.	73 The hydrolysis constant of anilinium acetate is (Ka for CHCOOH = 10 and Kb for CHNH = 10) :- (1) 10 (2) 10 (3) 10 (4) 10
Answer» 73 The hydrolysis constant of anilinium acetate is (Ka for CHCOOH = 10 and Kb for CHNH = 10) :- (1) 10 (2) 10 (3) 10 (4) 10

Discussion

34.	True or False S1 : Interstitial compounds have high melting points, higher than those of pure metals. S2 : Permanganate titration in presence of hydrochloric acid are unsatisfactory. S3 : KMnO4 does not act as an oxidizing agent in strong alkaline medium. S4 : KMnO4 on heating in a current of H2 gives MnO.
Answer» True or False $S_{1}$ : Interstitial compounds have high melting points, higher than those of pure metals. $S_{2}$ : Permanganate titration in presence of hydrochloric acid are unsatisfactory. $S_{3}$ : $K M n O_{4}$ does not act as an oxidizing agent in strong alkaline medium. $S_{4}$ : $K M n O_{4}$ on heating in a current of $H_{2}$ gives $M n O$ .

34.

True or False S1 : Interstitial compounds have high melting points, higher than those of pure metals. S2 : Permanganate titration in presence of hydrochloric acid are unsatisfactory. S3 : KMnO4 does not act as an oxidizing agent in strong alkaline medium. S4 : KMnO4 on heating in a current of H2 gives MnO.

Answer»

True or False

$S_{1}$ : Interstitial compounds have high melting points, higher than those of pure metals.

$S_{2}$ : Permanganate titration in presence of hydrochloric acid are unsatisfactory.

$S_{3}$ : $K M n O_{4}$ does not act as an oxidizing agent in strong alkaline medium.

$S_{4}$ : $K M n O_{4}$ on heating in a current of $H_{2}$ gives $M n O$ .

Discussion

35.	In which of the following reactions , s†an dard reaction entropy change (△ S^°) is positive and standard Gibb's energy change (△ G^°) decreases sharply with increasing temperature? (1) Mg(s)+1/2O2(g)→ MgO(s) (2) 1/2C graphite + 1/202(g)→1/2CO2(g) (3) C graphite +1/202(g)→ CO(g) (4) CO(g)+ 1/2O2(g)→ CO2(g)
Answer» In which of the following reactions , s†an dard reaction entropy change (△ S^°) is positive and standard Gibb's energy change (△ G^°) decreases sharply with increasing temperature? (1) Mg(s)+1/2O2(g)→ MgO(s) (2) 1/2C graphite + 1/202(g)→1/2CO2(g) (3) C graphite +1/202(g)→ CO(g) (4) CO(g)+ 1/2O2(g)→ CO2(g)

Discussion

36.	60 Why NH3 cannot participate in resonance with any group ?
Answer» 60 Why NH3 cannot participate in resonance with any group ?

Discussion

37.	An element X (Atomic weight = 80 g/mol) has a fcc structure. Calculate the number of unit cells in 8 g of X
Answer» An element $X$ (Atomic weight = 80 g/mol) has a $f c c$ structure. Calculate the number of unit cells in $8 g$ of $X$

Discussion

38.	In the ore Bauxite Al2O3.2H2O there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.
Answer» In the ore Bauxite $A l_{2} O_{3} .2 H_{2} O$ there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.

Discussion

39.	What is meant by moment of couple?
Answer» What is meant by moment of couple?

Discussion

40.	Which of the following is true about H3BO3?
Answer» Which of the following is true about $H_{3} B O_{3}$ ?

Discussion

41.	Consider the following table for an LTI system having an impulse response h(t). WhereInputOutputx(t)y(t)ddtx(t)−3y(t)+e−2tu(t)Then the value of h(t)\|t=1 is ____(Answer upto three decimal places)0.184
Answer» Consider the following table for an LTI system having an impulse response h(t). Where $\begin{matrix} Input & Output x(t) & y(t) \frac{d}{d t} x (t) & - 3 y (t) + e^{- 2 t} u (t) \end{matrix}$ Then the value of $h (t) \|_{t = 1}$ is ____(Answer upto three decimal places) 0.184

Discussion

42.	Not getting how to find 1st and 2nd nearest neighbours in different type of structure
Answer» Not getting how to find 1st and 2nd nearest neighbours in different type of structure

Discussion

43.	When chlorine water is exposed to sunlight, O2 is liberated hence:
Answer» When chlorine water is exposed to sunlight, $O_{2}$ is liberated hence:

Discussion

44.	4.The specific heat of metal is 1 J/gK . If equivalent weight of metal is 9. Prove that it's exact atomic weight is 27.
Answer» 4.The specific heat of metal is 1 J/gK . If equivalent weight of metal is 9. Prove that it's exact atomic weight is 27.

Discussion

45.	If a metal crystallises in fcc lattice then the packing fraction of its unit cell will beयदि एक धातु fcc जालक में क्रिस्टलीकृत होती है, तो इसकी एकक कोष्ठिका का संकुलन प्रभाज होगा
Answer» If a metal crystallises in fcc lattice then the packing fraction of its unit cell will be यदि एक धातु fcc जालक में क्रिस्टलीकृत होती है, तो इसकी एकक कोष्ठिका का संकुलन प्रभाज होगा

Discussion

46.	In which of the following molecule, the number of possible ∠XAX angles is maximum in the anionic part of their solid state? [A: central atom, X: surrounding atom]
Answer» In which of the following molecule, the number of possible $∠ X A X$ angles is maximum in the anionic part of their solid state? [ $A :$ central atom, $X :$ surrounding atom]

Discussion

47.	For the reaction, 2SO2+O2⇌2SO3, the rate of disappearance of O2 is 2×10−4 molL−1s−1. The rate of appearance of SO3 is:
Answer» For the reaction, $2 S O_{2} + O_{2} ⇌ 2 S O_{3}$ , the rate of disappearance of $O_{2}$ is $2 \times 10^{- 4} m o l L^{- 1} s^{- 1}$ . The rate of appearance of $S O_{3}$ is:

Discussion

48.	Which of the following pairs of compound illustrate the law of multiple proportions 1 CuO and Cu2O 2 CaC2 and CaSO4
Answer» Which of the following pairs of compound illustrate the law of multiple proportions 1 CuO and Cu2O 2 CaC2 and CaSO4

Discussion

49.	find the formula of halide of the metal whose succevive ionization enthalpies are x 2x 5x 100x kjmol-1 respectively
Answer» find the formula of halide of the metal whose succevive ionization enthalpies are x 2x 5x 100x kjmol-1 respectively

Discussion

50.	Pure water freezes at 273 K and 1 bar. The addition of 34.5g of ethanol to 500g of water changes the freezing point of the solution. Use the freezing point depression constant of water as 2K kg mol−1. The figures shown below represent plots of vapour pressure (V.P.) versus temperature (T). [Molecular weight of ethanol is 46g mol−1] Among the following, the option representing change in the freezing point is
Answer» Pure water freezes at 273 K and 1 bar. The addition of 34.5g of ethanol to 500g of water changes the freezing point of the solution. Use the freezing point depression constant of water as 2K kg $m o l^{- 1}$ . The figures shown below represent plots of vapour pressure (V.P.) versus temperature (T). [Molecular weight of ethanol is 46g $m o l^{- 1}$ ] Among the following, the option representing change in the freezing point is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

1.Boiling point sequence in BeCl2, MgCl2, CaCl2, BaCl2.Give reason

How to determine that n which pair of ions both the species contain S-S bond ? 1)S_2O_7^{-2} , S_2O_3^{-2} 2)S_4O_6^{-2} , S_2O_3^{-2}

19.For gas a in a calorie meter heat evolved is 250 kJ/Mol. For 0.2 Mol of A temperature rise from 298 K to 300 K. Find out the heat capacity of calorie meter is?

10 In the electrolysis of CuSO4 solution ,how many gram of Cu plated out on the cathode in the time that it takes to liberate 5.6 litre of O2 gas ,measure at 1 atm and 273K,at the annode?

24. Cyclohex 2- ene1 one on reaction with ithium aluminium hydride and sodium borohydide gives?

A hydrocarbon of molecularly formula c5 h10 pn monochlronition gives one product and on dichhlorination dives three product identify the hydrocarbon

In the reaction, C6H5CHO+(CH3CO)2OCH3COONa−−−−−−−−→180∘CX, 'X' is

Write down the electronic configuration of Cr3+ Pm3+ Cu+ Ce4+ Co2+ Lu2+ Mn2+ Th4+

under identical conditions of pressure and temperature2L of gaseous mixture (H2 and CH4) effuses through a hole in 5 min whereas 2 litres of a gasX of molecular mass 36 takes 10 minutes to effuses through the same hole. The mole ratio of H2: CH4 in the mixture i

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?

A:\:The number of moles KMnO_{4 } that will be needed to react with 1 mole of HCN ( while HCN oxidises into CO_3^{2-} and NO_3^- ) in acidic medium is 0.5 . R : Because the n-factor of KMnO_4 in acidic medium is 5 and the n-factor of HCN is 10 . So, molar ratio of KMnO_4 to HCN is 1:2.

Alcohols and phenols react with Grignard reagent and form:

The order of molar ionic conductances of the octahedral complexes is- I. PtCl4 . 5NH3 II. PtCl4 . 4NH3 III. PtCl4 . 3NH3 IV. PtCl4 . 2NH3

The bond dissociation energies of X2,Y2 and XY are in the ratio of 1:0.5:1ΔH for the formation of XY is−200kJ mol−1. The bond dissociation energy of X2 will be:

Peroxide linkage is present in:

A sample of 2,3-dibromo-3-methylpentane is heated with zinc dust. Identify which is the structure that represents the organic product formed in the reaction.

Match the List-I with List-II by using the postulates of VBT of complexesList−IList−II(p) [Ni(CN)4]2−(1) sp3 hybridization(Q) [Ni(CO)4](2) dsp2 hybridization(R) [Cu(NH3)4]2+(3) μ=0 BM(S) [Pd(Cl)4]2−(4) μ=1.732 BM

The EMF of the cell M|Mn+(0.02 M)||H+(1 M)|H2(g)(1 atm),Pt at 25 oC is 0.81 V. The valency of the metal if the standard oxidation potential of the metal is 0.76 V?(log0.02=−1.7)

A vessel of capactity 1 dm3 contains 1.03×1023 H2 molecules exerting a pressure of 101.325 kPa. Calculate RMS speed and average speed.

The reagent used to convertCH3CH2COOH→CH3CH2CH2OH is

The number of revolution per second made by an electron in the first Bohr orbit of the hydrogen atom is 6.5×103k. The value k is (Integer only)

Correct order of basic strengths of given amines (1)Me2NH MeNH2 Me3N> NH3(Protic solvent) (2) Et2NH EtH EtNH2 NH3>(Protic solvent) (3) Me3N>Me NH Me NH2> NH3(Gas phase) (4) All are correct

Identify compound X in the following aqueous of reaction:

Among the following coordinate bond is present in:

The major product of the above reaction is:

13 A system changes from state X to Y with a change in internal energy measuring to 25 kJ/mol, by a reversible path and returns from Y to X by an irreversible path. What will be the net change in internal energy ? A 25 kJ B >25 kJ C

If reduction potential of an element is negative of oxidation potential, then why the oxidation potential of water is -1.23 and its reduction potential is -0.83?

20 mL of 0.1 M Bacl2 is mixed with 30 mL of 0.2 M Al2(SO4)3. What is the weight of BaSO4 formed?( A of Ba=137).

KpKc for the following reaction will be CO(g)+12O2(g)→CO2(g)

20. Why the solutions physical state depends on siolvent physical state

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show cleavage property?

Calculate the number of Cl ion in 100 ml of the solution which is formed by mixing of 200ml 2(M) NaCl(aq) solution, 800 ml 1(M) MgCl_{2 }(aq) solution an 1L 5.3 × 10^{-4 }(M) CCl_{4 }(aq) solution.

73 The hydrolysis constant of anilinium acetate is (Ka for CHCOOH = 10 and Kb for CHNH = 10) :- (1) 10 (2) 10 (3) 10 (4) 10

60 Why NH3 cannot participate in resonance with any group ?

An element X (Atomic weight = 80 g/mol) has a fcc structure. Calculate the number of unit cells in 8 g of X

In the ore Bauxite Al2O3.2H2O there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.

What is meant by moment of couple?

Which of the following is true about H3BO3?

Consider the following table for an LTI system having an impulse response h(t). WhereInputOutputx(t)y(t)ddtx(t)−3y(t)+e−2tu(t)Then the value of h(t)|t=1 is ____(Answer upto three decimal places)0.184

Not getting how to find 1st and 2nd nearest neighbours in different type of structure

When chlorine water is exposed to sunlight, O2 is liberated hence:

4.The specific heat of metal is 1 J/gK . If equivalent weight of metal is 9. Prove that it's exact atomic weight is 27.

In which of the following molecule, the number of possible ∠XAX angles is maximum in the anionic part of their solid state? [A: central atom, X: surrounding atom]

For the reaction, 2SO2+O2⇌2SO3, the rate of disappearance of O2 is 2×10−4 molL−1s−1. The rate of appearance of SO3 is:

Which of the following pairs of compound illustrate the law of multiple proportions 1 CuO and Cu2O 2 CaC2 and CaSO4

find the formula of halide of the metal whose succevive ionization enthalpies are x 2x 5x 100x kjmol-1 respectively