46295 + Interview Questions in Chemistry

1.	Justify the placement of O, S, Se, Te and Po in the same group of the Periodic Table in terms of electronic configuration, oxidation state and hydride formation.
Answer» Justify the placement of O, S, Se, Te and Po in the same group of the Periodic Table in terms of electronic configuration, oxidation state and hydride formation.

Discussion

2.	Write chemical reactions taking place in the extractions of zinc from zinc blende.
Answer» Write chemical reactions taking place in the extractions of zinc from zinc blende.

Discussion

3.	The statement(s) true about PCl2Br3 is/are:
Answer» The statement(s) true about $P C l_{2} B r_{3}$ is/are:

Discussion

4.	Which one of the following reacts with BCl3 to form B2H6 ?
Answer» Which one of the following reacts with $B C l_{3}$ to form $B_{2} H_{6}$ ?

Discussion

5.	(a) Arrange the following compounds in the increasing order of their acid strength: p - cresol, p - nitrophenol, phenol (b) Write the mechanism (using curved arrow notation) of the following reaction: CH2=CH2H3O+−−−→CH3−CH+2+H2O
Answer» (a) Arrange the following compounds in the increasing order of their acid strength: p - cresol, p - nitrophenol, phenol (b) Write the mechanism (using curved arrow notation) of the following reaction: $C H_{2} = C H_{2} H_{3} O^{+} - -- \to C H_{3} - C H_{2}^{+} + H_{2} O$

Discussion

6.	The compressibility of water is 6×10–10N–1m2. If 1 litre of water is subjected to a pressure of 4×107N/m2, the decrease in its volume is:
Answer» The compressibility of water is $6 \times 10^{- 10} N^{- 1} m^{2}$ . If 1 litre of water is subjected to a pressure of $4 \times 10^{7} N / m^{2}$ , the decrease in its volume is:

Discussion

7.	A one litre glass flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains the same. If coefficient of linear expression of glass is 9×10−6 (°C)−1 , while volume of expansion of mercury is 1.8×10−4 (°C)−1Then the volume of mercury in this flask is (in cc)(volume of air remains same)
Answer» A one litre glass flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains the same. If coefficient of linear expression of glass is $9 \times 10^{- 6} {(° C)}^{- 1}$ , while volume of expansion of mercury is $1.8 \times 10^{- 4} {(° C)}^{- 1}$ Then the volume of mercury in this flask is (in cc)(volume of air remains same)

Discussion

8.	How many of the following can given Fehling solution test ? (i) HCHO (ii) CH3CHO (iii) PhCHO (iv) (v) (vi) (vii) Glucose (viii) Fructose
Answer» How many of the following can given Fehling solution test ? (i) $H C H O$ (ii) $C H_{3} C H O$ (iii) $P h C H O$ (iv) (v) (vi) (vii) Glucose (viii) Fructose

Discussion

9.	Two p-block elements x having (outer shell configuration ns2,np3 and z (outer shell configuration ns2,np4) occupy neighbouring positions in a period. Using this information which of the following is correct with respect to their ionization potential as Ix and Iz
Answer» Two p-block elements $x$ having (outer shell configuration ns $^{2}$ ,np $^{3}$ and $z$ (outer shell configuration ns $^{2}$ ,np $^{4}$ ) occupy neighbouring positions in a period. Using this information which of the following is correct with respect to their ionization potential as $I_{x}$ and $I_{z}$

Discussion

10.	What would be the product of the given reaction?
Answer» What would be the product of the given reaction?

Discussion

11.	If a light with frequency 4×1016 Hz emitted photoelectrons with double the maximum kinetic energy as are emitted by the light of frequency 2.5×1016Hz from the same metal surface, if the threshold frequency (v0) of the metal is x×1016Hz. Then the value of x:
Answer» If a light with frequency $4 \times 10^{16} H z$ emitted photoelectrons with double the maximum kinetic energy as are emitted by the light of frequency $2.5 \times 10^{16} H z$ from the same metal surface, if the threshold frequency $(v_{0})$ of the metal is $x \times 10^{16} H z .$ Then the value of x:

Discussion

12.	A soft silver-white metal 'A' burns with a golden-yellow flame to give a yellow power 'B,' which on treatment with water gives a clear solution 'C'. The solution placed on Al attacks this metal, liberating a gas 'D' forming a water-soluble compound 'E'. The metal 'A' dissolves in liquid NH3 to form a deep-blue solution which is a good conductor and an excellent reducing agent. Identify 'C':
Answer» A soft silver-white metal 'A' burns with a golden-yellow flame to give a yellow power 'B,' which on treatment with water gives a clear solution 'C'. The solution placed on $A l$ attacks this metal, liberating a gas 'D' forming a water-soluble compound 'E'. The metal 'A' dissolves in liquid $N H_{3}$ to form a deep-blue solution which is a good conductor and an excellent reducing agent. Identify 'C':

Discussion

13.	4 g of an ideal gas was introduced into a bulb of volume of 0.821 dm3 at certain pressure, P and temperature T. The above bulb was placed in a thermostat maintained at temperature (T+125)K. 0.8 gm of the gas was leaked to keep the original pressure. Calculate the pressure in atm. [Molar mass of the gas is 40 gmol−1 and R value is 0.0821 lit-atm-k−1mol−1]
Answer» 4 g of an ideal gas was introduced into a bulb of volume of $0.821 {dm}^{3}$ at certain pressure, P and temperature T. The above bulb was placed in a thermostat maintained at temperature (T+125)K. 0.8 gm of the gas was leaked to keep the original pressure. Calculate the pressure in atm. [Molar mass of the gas is $40 {gmol}^{- 1}$ and R value is $0.0821 {lit-atm-k}^{- 1} {mol}^{- 1}$ ]

Discussion

14.	Find the volume of water should be added to 50 mL of HNO3 having density 1.5 g mL−1 and 63.0% by weight to have one molar solution. (Give your answer in mL)
Answer» Find the volume of water should be added to 50 mL of $H N O_{3}$ having density $1.5 g m L^{- 1}$ and 63.0% by weight to have one molar solution. (Give your answer in mL)

Discussion

15.	Which one of the following ions has the highest value of ionic radius?
Answer» Which one of the following ions has the highest value of ionic radius?

Discussion

16.	Ammonia is produced in the Haber process by the action of hydrogen on nitrogen. Write a balanced chemical equation for this process. Under what conditions is the reaction carried out? Explain your answer.
Answer» Ammonia is produced in the Haber process by the action of hydrogen on nitrogen. Write a balanced chemical equation for this process. Under what conditions is the reaction carried out? Explain your answer.

Discussion

17.	What happes when n - butyl chloride is treated with alcoholic KOH. bromobenzene is treated with Mg in the presence of dry ether. Chlorobenzene is subjected to hydrolysis. Ethyl chloride is treated with aqueous KOH methyl bromide is treated with sodium in the presence of dry ether. methyl chloride is treated with KCN ?
Answer» What happes when n - butyl chloride is treated with alcoholic KOH. bromobenzene is treated with Mg in the presence of dry ether. Chlorobenzene is subjected to hydrolysis. Ethyl chloride is treated with aqueous KOH methyl bromide is treated with sodium in the presence of dry ether. methyl chloride is treated with KCN ?

17.

What happes when n - butyl chloride is treated with alcoholic KOH. bromobenzene is treated with Mg in the presence of dry ether. Chlorobenzene is subjected to hydrolysis. Ethyl chloride is treated with aqueous KOH methyl bromide is treated with sodium in the presence of dry ether. methyl chloride is treated with KCN ?

Answer»

What happes when

n - butyl chloride is treated with alcoholic KOH.

bromobenzene is treated with Mg in the presence of dry ether.

Chlorobenzene is subjected to hydrolysis.

Ethyl chloride is treated with aqueous KOH

methyl bromide is treated with sodium in the presence of dry ether.

methyl chloride is treated with KCN ?

Discussion

18.	For the system A2(g)+B2(g)⇌2AB(g), △H=+5 kJ/mole. If the activation energy for the forward step is 100 kcal/mole. If graph of ln(kb) vs T is drawn then find the value of the slope at 500 K. (kb = rate constant of the backward reaction, take 1 cal = 4.2 J and the gas constant R = 8.3 J/molK)
Answer» For the system $A_{2} (g) + B_{2} (g) ⇌ 2 A B (g), △ H = + 5 k J / m o l e .$ If the activation energy for the forward step is 100 kcal/mole. If graph of $l n (k_{b})$ vs T is drawn then find the value of the slope at 500 K. ( $k_{b}$ = rate constant of the backward reaction, take 1 cal = 4.2 J and the gas constant R = 8.3 J/molK)

Discussion

19.	For the following question, the answer is an integer between 0 and 9 (both inclusive). In the Ellingham diagram for oxides, there are x lines for the reaction(s) between C and O. What is x? ___
Answer» For the following question, the answer is an integer between 0 and 9 (both inclusive). In the Ellingham diagram for oxides, there are x lines for the reaction(s) between C and O. What is x? ___

19.

For the following question, the answer is an integer between 0 and 9 (both inclusive). In the Ellingham diagram for oxides, there are x lines for the reaction(s) between C and O. What is x? ___

Answer»

For the following question, the answer is an integer between 0 and 9 (both inclusive).

In the Ellingham diagram for oxides, there are x lines for the reaction(s) between C and O. What is x?

___

Discussion

20.	BX3NH3⟶BX3.NH3 ΔHf = Heat of formation of the adduct. The numerical value of ΔHf is found to be maximum for:
Answer» $B X_{3} N H_{3} ⟶ B X_{3} . N H_{3}$ $Δ H_{f}$ = Heat of formation of the adduct. The numerical value of $Δ H_{f}$ is found to be maximum for:

Discussion

21.	Which one of the following class of compounds is obtained by polymerization of acetylene?
Answer» Which one of the following class of compounds is obtained by polymerization of acetylene?

Discussion

22.	The equivalent mass of HCl in the given reaction is k2cr2o7+14hcl gives 2kcl+2crcl3+3cl2+h2o
Answer» The equivalent mass of HCl in the given reaction is k2cr2o7+14hcl gives 2kcl+2crcl3+3cl2+h2o

Discussion

23.	3 g urea is dissolved in 45 g of water. The relative lowering of vapour pressure is :
Answer» $3 g$ urea is dissolved in $45 g$ of water. The relative lowering of vapour pressure is :

Discussion

24.	Find the relation between r and a in the following figure. if a = x ∗ r , type 100x rounded off to 2 decimal places. ___
Answer» Find the relation between r and a in the following figure. if a = x $*$ r , type 100x rounded off to 2 decimal places. ___

24.

Find the relation between r and a in the following figure. if a = x ∗ r , type 100x rounded off to 2 decimal places. ___

Answer»

Find the relation between r and a in the following figure.

if a = x $*$ r , type 100x rounded off to 2 decimal places.

___

Discussion

25.	The specific rate constant of a first order reaction depends on the
Answer» The specific rate constant of a first order reaction depends on the

Discussion

26.	The correct structure of 2-Ethyl-3-methylhexa-1,4-diene.
Answer» The correct structure of 2-Ethyl-3-methylhexa-1,4-diene.

Discussion

27.	In the ground state, carbon atom has how many unpaired electron(s)?
Answer» In the ground state, carbon atom has how many unpaired electron(s)?

Discussion

28.	Which among the following Xe compounds is highly explosive and a powerful oxidising agent ?
Answer» Which among the following Xe compounds is highly explosive and a powerful oxidising agent ?

Discussion

29.	Assume ideal gas behaviour. For the reaction, N2O5(g)⇌2NO2(g)+0.5O2(g), the initial pressure is 600 mmHg and the pressure at any time is 960 mmHg. The fraction of N2O5(g) decomposed at constant volume and temperature is:
Answer» Assume ideal gas behaviour. For the reaction, $N_{2} O_{5} (g) ⇌ 2 N O_{2} (g) + 0.5 O_{2} (g)$ , the initial pressure is 600 mmHg and the pressure at any time is 960 mmHg. The fraction of $N_{2} O_{5} (g)$ decomposed at constant volume and temperature is:

Discussion

30.	Match the following: (1)HCl (i) Polar Molecular solid (2)Ice (ii) Non-polar Molecular solid (3)CCl4 (iii) H-bonded Molecular solid
Answer» Match the following: (1)HCl (i) Polar Molecular solid (2)Ice (ii) Non-polar Molecular solid (3)CCl $_{4}$ (iii) H-bonded Molecular solid

30.

Match the following: (1)HCl (i) Polar Molecular solid (2)Ice (ii) Non-polar Molecular solid (3)CCl4 (iii) H-bonded Molecular solid

Answer»

Match the following:

(1)HCl (i) Polar Molecular solid

(2)Ice (ii) Non-polar Molecular solid

(3)CCl $_{4}$ (iii) H-bonded Molecular solid

Discussion

31.	Which organometallic compound is used in Ziegler Natta catalyst used for polymerization of stereoregular polymers?
Answer» Which organometallic compound is used in Ziegler Natta catalyst used for polymerization of stereoregular polymers?

Discussion

32.	Let An (n∈N) be a square matrix of order (2n−1)×(2n−1) such that aij=0 ∀ i≠j and aij=n2+i+1−2n ∀ i=j where aij denotes the element of ith row and jth column of An. Let Tn=(−1)n×( sum of all the elements of An). Let S=102∑n=1Tn , then the value of S13,
Answer» Let $A_{n} (n \in N)$ be a square matrix of order $(2 n - 1) \times (2 n - 1)$ such that $a_{i j} = 0 \forall i \neq j$ and $a_{i j} = n^{2} + i + 1 - 2 n \forall i = j$ where $a_{i j}$ denotes the element of $i^{t h}$ row and $j^{t h}$ column of $A_{n} .$ Let $T_{n} = (- 1)^{n} \times (sum of all the elements of A_{n}) .$ Let $S = 102 \sum n = 1 T_{n}$ , then the value of $S^{\frac{1}{3}}$ ,

Discussion

33.	20 mL of a 0.2 M Al2(SO4)3 solution is mixed with 20 mL of a 0.6 M BaCl2 solution. Determine the molarity of Al3+ ions in the solution.(in mol/L)
Answer» $20 mL$ of a $0.2 M A l_{2} (S O_{4})_{3}$ solution is mixed with $20 mL$ of a $0.6 M B a C l_{2}$ solution. Determine the molarity of $A l^{3 +}$ ions in the solution.(in mol/L)

Discussion

34.	The reaction of toluene with chlorine in the presence of iron and in the absence of light yields.........
Answer» The reaction of toluene with chlorine in the presence of iron and in the absence of light yields.........

34.

The reaction of toluene with chlorine in the presence of iron and in the absence of light yields.........

Answer»

The reaction of toluene with chlorine in the presence of iron and in the absence of light yields.........

Discussion

35.	0.1M of urea is isotonic to a)0.1M NaCl solution b) 0.1M glucose solution C)0.02M KCl solution d) 0.1 BaCl2 solution
Answer» 0.1M of urea is isotonic to a)0.1M NaCl solution b) 0.1M glucose solution C)0.02M KCl solution d) 0.1 BaCl2 solution

35.

0.1M of urea is isotonic to a)0.1M NaCl solution b) 0.1M glucose solution C)0.02M KCl solution d) 0.1 BaCl2 solution

Answer»

0.1M of urea is isotonic to

a)0.1M NaCl solution

b) 0.1M glucose solution

C)0.02M KCl solution

d) 0.1 BaCl2 solution

Discussion

36.	Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. HNO3 and H2SO4 mixture. Reason (R) - OH group in phenol is o-,p-directing. (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) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture. Reason (R) - OH group in phenol is o-,p-directing. (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

37.	If force of repulsion increases then which of the following becomes easier? 1. removal of electron 2. addition of electron & how?
Answer» If force of repulsion increases then which of the following becomes easier? 1. removal of electron 2. addition of electron & how?

37.

If force of repulsion increases then which of the following becomes easier? 1. removal of electron 2. addition of electron & how?

Answer»

If force of repulsion increases then which of the following becomes easier?

1. removal of electron

2. addition of electron

& how?

Discussion

38.	What do you mean by pseudo noble gas configuration
Answer» What do you mean by pseudo noble gas configuration

Discussion

39.	What is inversion temperature?
Answer» What is inversion temperature?

Discussion

40.	An aqueous solution of [Ti(H2O)6]3+ is:
Answer» An aqueous solution of [Ti(H₂O)₆]³⁺ is:

Discussion

41.	An LPG cylinder weighs 14.8 kg when empty. When it is full, it weighs 29 kg and after consumption, the weight of the cylinder reduces to 23.2 kg. Find out the volume of n-butane in cubic metres used up at 27∘C and 1 atm. [Molecular mass of n-butane = 58]
Answer» An LPG cylinder weighs $14.8 kg$ when empty. When it is full, it weighs $29 kg$ and after consumption, the weight of the cylinder reduces to $23.2 kg$ . Find out the volume of n-butane in cubic metres used up at $27^{\circ} C$ and $1 a t m$ . [Molecular mass of n-butane = 58]

Discussion

42.	Why does compound (A) given below not form an oxime?
Answer» Why does compound (A) given below not form an oxime?

Discussion

43.	What are polar solvents and non polar solvents ?
Answer» What are polar solvents and non polar solvents ?

Discussion

44.	Write structures of all the alkenes which on hydrogenation give 2-methylbutane.
Answer» Write structures of all the alkenes which on hydrogenation give 2-methylbutane.

Discussion

45.	Is lanthanum part of the lanthanides?
Answer» Is lanthanum part of the lanthanides?

Discussion

46.	what is more conentrated, 1Molar or 1 molal solution(generalized). please give an example
Answer» what is more conentrated, 1Molar or 1 molal solution(generalized). please give an example

Discussion

47.	The weight of gaseous mixture containing 6.02×10^23molecules of nitrogen and 3.01×10^23molecuels of sulphur dioxide are
Answer» The weight of gaseous mixture containing 6.02×10^23molecules of nitrogen and 3.01×10^23molecuels of sulphur dioxide are

Discussion

48.	Question 18 Which of the following order of energies of mlecular orbitals of N2 is correct? (a)(π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (b) (π2py)>(σ2pz)>(π∗2px)≈(π∗2py) (c) (π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (d) (π2py)>(σ2pz)<(π∗2px)≈(π∗2py)
Answer» Question 18 Which of the following order of energies of mlecular orbitals of $N_{2}$ is correct? (a) $(π 2 p_{y}) < (σ 2 p_{z}) < (π^{} 2 p_{x}) \approx (π^{} 2 p_{y})$ (b) $(π 2 p_{y}) > (σ 2 p_{z}) > (π^{} 2 p_{x}) \approx (π^{} 2 p_{y})$ (c) $(π 2 p_{y}) < (σ 2 p_{z}) < (π^{} 2 p_{x}) \approx (π^{} 2 p_{y})$ (d) $(π 2 p_{y}) > (σ 2 p_{z}) < (π^{} 2 p_{x}) \approx (π^{} 2 p_{y})$

48.

Question 18 Which of the following order of energies of mlecular orbitals of N2 is correct? (a)(π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (b) (π2py)>(σ2pz)>(π∗2px)≈(π∗2py) (c) (π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (d) (π2py)>(σ2pz)<(π∗2px)≈(π∗2py)

Answer»

Question 18

Which of the following order of energies of mlecular orbitals of $N_{2}$ is correct?

(a) $(π 2 p_{y}) < (σ 2 p_{z}) < (π^{*} 2 p_{x}) \approx (π^{*} 2 p_{y})$

(b) $(π 2 p_{y}) > (σ 2 p_{z}) > (π^{*} 2 p_{x}) \approx (π^{*} 2 p_{y})$

(c) $(π 2 p_{y}) < (σ 2 p_{z}) < (π^{*} 2 p_{x}) \approx (π^{*} 2 p_{y})$

(d) $(π 2 p_{y}) > (σ 2 p_{z}) < (π^{*} 2 p_{x}) \approx (π^{*} 2 p_{y})$

Discussion

49.	Which word will be represented by [5][20][20][5]? (A) MOAR (B) DOOR (C) BEEP
Answer» Which word will be represented by [5][20][20][5]? (A) MOAR (B) DOOR (C) BEEP

49.

Which word will be represented by [5][20][20][5]? (A) MOAR (B) DOOR (C) BEEP

Answer»

Which word will be represented by [5][20][20][5]?

(A) MOAR (B) DOOR (C) BEEP

Discussion

50.	Which of the following metals is obtained by electrometallurgy ?
Answer» Which of the following metals is obtained by electrometallurgy ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Justify the placement of O, S, Se, Te and Po in the same group of the Periodic Table in terms of electronic configuration, oxidation state and hydride formation.

Write chemical reactions taking place in the extractions of zinc from zinc blende.

The statement(s) true about PCl2Br3 is/are:

Which one of the following reacts with BCl3 to form B2H6 ?

(a) Arrange the following compounds in the increasing order of their acid strength: p - cresol, p - nitrophenol, phenol (b) Write the mechanism (using curved arrow notation) of the following reaction: CH2=CH2H3O+−−−→CH3−CH+2+H2O

The compressibility of water is 6×10–10N–1m2. If 1 litre of water is subjected to a pressure of 4×107N/m2, the decrease in its volume is:

How many of the following can given Fehling solution test ? (i) HCHO (ii) CH3CHO (iii) PhCHO (iv) (v) (vi) (vii) Glucose (viii) Fructose

Two p-block elements x having (outer shell configuration ns2,np3 and z (outer shell configuration ns2,np4) occupy neighbouring positions in a period. Using this information which of the following is correct with respect to their ionization potential as Ix and Iz

What would be the product of the given reaction?

If a light with frequency 4×1016 Hz emitted photoelectrons with double the maximum kinetic energy as are emitted by the light of frequency 2.5×1016Hz from the same metal surface, if the threshold frequency (v0) of the metal is x×1016Hz. Then the value of x:

Find the volume of water should be added to 50 mL of HNO3 having density 1.5 g mL−1 and 63.0% by weight to have one molar solution. (Give your answer in mL)

Which one of the following ions has the highest value of ionic radius?

Ammonia is produced in the Haber process by the action of hydrogen on nitrogen. Write a balanced chemical equation for this process. Under what conditions is the reaction carried out? Explain your answer.

For the system A2(g)+B2(g)⇌2AB(g), △H=+5 kJ/mole. If the activation energy for the forward step is 100 kcal/mole. If graph of ln(kb) vs T is drawn then find the value of the slope at 500 K. (kb = rate constant of the backward reaction, take 1 cal = 4.2 J and the gas constant R = 8.3 J/molK)

For the following question, the answer is an integer between 0 and 9 (both inclusive). In the Ellingham diagram for oxides, there are x lines for the reaction(s) between C and O. What is x? ___

BX3NH3⟶BX3.NH3 ΔHf = Heat of formation of the adduct. The numerical value of ΔHf is found to be maximum for:

Which one of the following class of compounds is obtained by polymerization of acetylene?

The equivalent mass of HCl in the given reaction is k2cr2o7+14hcl gives 2kcl+2crcl3+3cl2+h2o

3 g urea is dissolved in 45 g of water. The relative lowering of vapour pressure is :

Find the relation between r and a in the following figure. if a = x ∗ r , type 100x rounded off to 2 decimal places. ___

The specific rate constant of a first order reaction depends on the

The correct structure of 2-Ethyl-3-methylhexa-1,4-diene.

In the ground state, carbon atom has how many unpaired electron(s)?

Which among the following Xe compounds is highly explosive and a powerful oxidising agent ?

Assume ideal gas behaviour. For the reaction, N2O5(g)⇌2NO2(g)+0.5O2(g), the initial pressure is 600 mmHg and the pressure at any time is 960 mmHg. The fraction of N2O5(g) decomposed at constant volume and temperature is:

Match the following: (1)HCl (i) Polar Molecular solid (2)Ice (ii) Non-polar Molecular solid (3)CCl4 (iii) H-bonded Molecular solid

Which organometallic compound is used in Ziegler Natta catalyst used for polymerization of stereoregular polymers?

Let An (n∈N) be a square matrix of order (2n−1)×(2n−1) such that aij=0 ∀ i≠j and aij=n2+i+1−2n ∀ i=j where aij denotes the element of ith row and jth column of An. Let Tn=(−1)n×( sum of all the elements of An). Let S=102∑n=1Tn , then the value of S13,

20 mL of a 0.2 M Al2(SO4)3 solution is mixed with 20 mL of a 0.6 M BaCl2 solution. Determine the molarity of Al3+ ions in the solution.(in mol/L)

The reaction of toluene with chlorine in the presence of iron and in the absence of light yields.........

0.1M of urea is isotonic to a)0.1M NaCl solution b) 0.1M glucose solution C)0.02M KCl solution d) 0.1 BaCl2 solution

If force of repulsion increases then which of the following becomes easier? 1. removal of electron 2. addition of electron &amp; how?

What do you mean by pseudo noble gas configuration

What is inversion temperature?

An aqueous solution of [Ti(H2O)6]3+ is:

An LPG cylinder weighs 14.8 kg when empty. When it is full, it weighs 29 kg and after consumption, the weight of the cylinder reduces to 23.2 kg. Find out the volume of n-butane in cubic metres used up at 27∘C and 1 atm. [Molecular mass of n-butane = 58]

Why does compound (A) given below not form an oxime?

What are polar solvents and non polar solvents ?

Write structures of all the alkenes which on hydrogenation give 2-methylbutane.

Is lanthanum part of the lanthanides?

what is more conentrated, 1Molar or 1 molal solution(generalized). please give an example

The weight of gaseous mixture containing 6.02×10^23molecules of nitrogen and 3.01×10^23molecuels of sulphur dioxide are

Question 18 Which of the following order of energies of mlecular orbitals of N2 is correct? (a)(π2py)&lt;(σ2pz)&lt;(π∗2px)≈(π∗2py) (b) (π2py)&gt;(σ2pz)&gt;(π∗2px)≈(π∗2py) (c) (π2py)&lt;(σ2pz)&lt;(π∗2px)≈(π∗2py) (d) (π2py)&gt;(σ2pz)&lt;(π∗2px)≈(π∗2py)

Which word will be represented by [5][20][20][5]? (A) MOAR (B) DOOR (C) BEEP

Which of the following metals is obtained by electrometallurgy ?

If force of repulsion increases then which of the following becomes easier? 1. removal of electron 2. addition of electron & how?

Question 18 Which of the following order of energies of mlecular orbitals of N2 is correct? (a)(π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (b) (π2py)>(σ2pz)>(π∗2px)≈(π∗2py) (c) (π2py)<(σ2pz)<(π∗2px)≈(π∗2py) (d) (π2py)>(σ2pz)<(π∗2px)≈(π∗2py)