46295 + Interview Questions in Chemistry

1.	Anline on acetylation followed by the treatement with nitrating mixture gives a product which on hydrolysis gives compound 'X'. 'X' is:
Answer» Anline on acetylation followed by the treatement with nitrating mixture gives a product which on hydrolysis gives compound 'X'. 'X' is:

Discussion

2.	Why is it necessary to use acetic acid and not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?
Answer» Why is it necessary to use acetic acid and not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

Discussion

3.	How many moles of magnesium phosphate will contain 0.25 moles of oxygen atoms
Answer» How many moles of magnesium phosphate will contain 0.25 moles of oxygen atoms

Discussion

4.	The energy difference between the first two levels of hydrogen atom is 10.2 eV. For another element of atomic number 10 and mass number 20, the energy difference between the first two levels will be
Answer» The energy difference between the first two levels of hydrogen atom is $10.2 e V$ . For another element of atomic number $10$ and mass number $20$ , the energy difference between the first two levels will be

Discussion

5.	Write equations of the following reactions Friedel Crafts reaction - alkylation of anisole. Nitration of anisole. Bromination of anisole in ethanoic acid medium. Friedel Crafts acetylation of anisole.
Answer» Write equations of the following reactions Friedel Crafts reaction - alkylation of anisole. Nitration of anisole. Bromination of anisole in ethanoic acid medium. Friedel Crafts acetylation of anisole.

5.

Write equations of the following reactions Friedel Crafts reaction - alkylation of anisole. Nitration of anisole. Bromination of anisole in ethanoic acid medium. Friedel Crafts acetylation of anisole.

Answer»

Write equations of the following reactions
Friedel Crafts reaction - alkylation of anisole.

Nitration of anisole.

Bromination of anisole in ethanoic acid medium.

Friedel Crafts acetylation of anisole.

Discussion

6.	QUESTION 2.31 The depression in freezing point of water observed for the same amount of acetic acid, triehloroacetie acid and trifluoroacctie acid increases in the order given above. Explain briefly.
Answer» QUESTION 2.31 The depression in freezing point of water observed for the same amount of acetic acid, triehloroacetie acid and trifluoroacctie acid increases in the order given above. Explain briefly.

6.

QUESTION 2.31 The depression in freezing point of water observed for the same amount of acetic acid, triehloroacetie acid and trifluoroacctie acid increases in the order given above. Explain briefly.

Answer»

QUESTION 2.31

The depression in freezing point of water observed for the same amount of acetic acid, triehloroacetie acid and trifluoroacctie acid increases in the order given above. Explain briefly.

Discussion

7.	Mass of a mole of electrons is
Answer» Mass of a mole of electrons is

Discussion

8.	The first ionisation potential of Na, Mg and Si are 496, 737, and 776 kJ mol−1 respectively. The ionisation potential of Al could be:
Answer» The first ionisation potential of $N a$ , $M g$ and $S i$ are 496, 737, and 776 $k J m o l^{- 1}$ respectively. The ionisation potential of $A l$ could be:

Discussion

9.	A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is
Answer» A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

9.

A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

Answer»

A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

Discussion

10.	A certain reaction has value of Kp=0.03 at 100 K and ΔrHo=921.2 cal mol−1. Calculate the value of Kp at 200 K.
Answer» A certain reaction has value of $K_{p} = 0.03$ at 100 K and $Δ_{r} H^{o} = 921.2 c a l m o l^{- 1} .$ Calculate the value of $K_{p}$ at 200 K.

Discussion

11.	Pressure-temperature relationship for an ideal gas undergoing adiabatic change is γ=CpCv
Answer» Pressure-temperature relationship for an ideal gas undergoing adiabatic change is $γ = \frac{C_{p}}{C_{v}}$

Discussion

12.	What is the one-step reaction between ethylenea and acitaldehyde?
Answer» What is the one-step reaction between ethylenea and acitaldehyde?

Discussion

13.	In 2Na(S) + Cl2 → 2 NaCl (S) ; The oxidising agent is
Answer» In 2Na_(S) + Cl₂ → 2 NaCl_(S) ; The oxidising agent is

Discussion

14.	Match gases under specified conditions listed in Column 1 with their properties/laws in Column II. Column IColumn IIAHydrogen gas ⟮p = 200 atm,T = 273 K⟯pCompression factor = 1BHydrogen gas ⟮p = 0 atm,T = 273 K⟯qAttractive forces are dominantCCO2⟮p = 1 atm,T = 273 K⟯rpV=nRTDReal gas with very large molar volumesp⟮V−nb⟯=nRT
Answer» Match gases under specified conditions listed in Column 1 with their properties/laws in Column II. $\begin{matrix} C o l u m n I & C o l u m n I I A & H y d r o g e n g a s ⟮ p = 200 a t m, T = 273 K ⟯ & p & C o m p r e s s i o n f a c t o r = 1 B & H y d r o g e n g a s ⟮ p = 0 a t m, T = 273 K ⟯ & q & A t t r a c t i v e f o r c e s a r e d o m i n a n t C & C O_{2} ⟮ p = 1 a t m, T = 273 K ⟯ & r & p V = n R T D & R e a l g a s w i t h v e r y l a r g e m o l a r v o l u m e & s & p ⟮ V - n b ⟯ = n R T \end{matrix}$

14.

Match gases under specified conditions listed in Column 1 with their properties/laws in Column II. Column IColumn IIAHydrogen gas ⟮p = 200 atm,T = 273 K⟯pCompression factor = 1BHydrogen gas ⟮p = 0 atm,T = 273 K⟯qAttractive forces are dominantCCO2⟮p = 1 atm,T = 273 K⟯rpV=nRTDReal gas with very large molar volumesp⟮V−nb⟯=nRT

Answer»

Match gases under specified conditions listed in Column 1 with their properties/laws in Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A & H y d r o g e n g a s ⟮ p = 200 a t m, T = 273 K ⟯ & p & C o m p r e s s i o n f a c t o r = 1 B & H y d r o g e n g a s ⟮ p = 0 a t m, T = 273 K ⟯ & q & A t t r a c t i v e f o r c e s a r e d o m i n a n t C & C O_{2} ⟮ p = 1 a t m, T = 273 K ⟯ & r & p V = n R T D & R e a l g a s w i t h v e r y l a r g e m o l a r v o l u m e & s & p ⟮ V - n b ⟯ = n R T \end{matrix}$

Discussion

15.	The entropy change involved in the conversion of 1 mole of liquid water at 373 K to vapour will be: Given: △Hvap=2.257 kJ/g
Answer» The entropy change involved in the conversion of 1 mole of liquid water at $373 K$ to vapour will be: Given: $△ H_{v a p} = 2.257 k J / g$

Discussion

16.	Pressure of 1g of an ideal gas A at 27∘ C is found to be 2 bar.When 2 g of another ideal gas B is introduced in the same flask at same temperarture, the pressure becomes 3 bar.Find a relationship between their molecular masses.
Answer» Pressure of 1g of an ideal gas A at 27 $^{\circ}$ C is found to be 2 bar.When 2 g of another ideal gas B is introduced in the same flask at same temperarture, the pressure becomes 3 bar.Find a relationship between their molecular masses.

Discussion

17.	When chlorobenzene is treated with NaNH2 in liquid ammonia at 196K, aniline is formed. This reaction takes place by
Answer» When chlorobenzene is treated with NaNH₂ in liquid ammonia at 196K, aniline is formed. This reaction takes place by

Discussion

18.	Assume a hypothetical nuclear fission reaction: X→Y+Z If the atomic masses of X,YandZ are respectively x,yandz calculate the maximum amount of heat generated if 1gramof X undergoes fission. Consider the molar mass of X to be M.
Answer» Assume a hypothetical nuclear fission reaction: $X \to Y + Z$ If the atomic masses of $X, Y a n d Z$ are respectively $x, y a n d z$ calculate the maximum amount of heat generated if 1gramof X undergoes fission. Consider the molar mass of X to be M.

Discussion

19.	The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (molecular weight = 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?
Answer» The molecular formula of a commercial resin used for exchanging ions in water softening is $C_{8} H_{7} S O_{3} N a$ (molecular weight = 206). What would be the maximum uptake of $C a^{2 +}$ ions by the resin when expressed in mole per gram resin?

Discussion

20.	4 g of copper was dissolved in concentrated nitric acid. The copper nitrate on strong heating gave 5 g of its oxide. The equivalent weight of copper is _______.
Answer» $4 g$ of copper was dissolved in concentrated nitric acid. The copper nitrate on strong heating gave $5 g$ of its oxide. The equivalent weight of copper is _______.

Discussion

21.	See the figure The valves of X and Y are opened simultaneously. The white fumes of NH4Cl will first form close to which of A, B and C?
Answer» See the figure The valves of X and Y are opened simultaneously. The white fumes of $N H_{4} C l$ will first form close to which of A, B and C?

21.

See the figure The valves of X and Y are opened simultaneously. The white fumes of NH4Cl will first form close to which of A, B and C?

Answer»

See the figure

The valves of X and Y are opened simultaneously.

The white fumes of $N H_{4} C l$ will first form close to which of A, B and C?

Discussion

22.	The correct order of stability is:
Answer» The correct order of stability is:

Discussion

23.	Consider the following phenols The decreasing order of acidic nature of the above phenols is:
Answer» Consider the following phenols The decreasing order of acidic nature of the above phenols is:

Discussion

24.	What is the correct order of stability?
Answer» What is the correct order of stability?

Discussion

25.	A cyclic process ABCD is shown in the P-V diagram. Which of the following curves represents the same process?
Answer» A cyclic process ABCD is shown in the P-V diagram. Which of the following curves represents the same process?

25.

A cyclic process ABCD is shown in the P-V diagram. Which of the following curves represents the same process?

Answer»

A cyclic process ABCD is shown in the P-V diagram. Which of the following curves represents the same process?

Discussion

26.	The IUPAC name of the compound is :-
Answer» The IUPAC name of the compound is :-

Discussion

27.	In a sample of wood, the reading of a counter is 32 dpm and in fresh sample of tree it is 122 dpm. Due to an error, the counter gives the reading 2 dpm in absence of 14C. The half-life of 14C is 5770 years. The approximate age (in years) of wood sample is:
Answer» In a sample of wood, the reading of a counter is $32 dpm$ and in fresh sample of tree it is $122 dpm$ . Due to an error, the counter gives the reading 2 dpm in absence of $^{14} C$ . The half-life of $^{14} C$ is 5770 years. The approximate age (in years) of wood sample is:

Discussion

28.	If En is the energy required to remove the nth electron form the outer most shell of carbon then decreasing order of the energies is:
Answer» If $E_{n}$ is the energy required to remove the $n^{t h}$ electron form the outer most shell of carbon then decreasing order of the energies is:

Discussion

29.	Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure ? (a) A tetrehedral void is formed when a sphere of the second layer is present above triangular void in the first layer (b) All the triangular voids are not covered by the spheres of the second layer (c) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangulare shapes of these voids do not overlap (d) Octahedral voids are formed when the triagular voids in th second layer exactly overlap with similar voids in the first layer
Answer» Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure ? (a) A tetrehedral void is formed when a sphere of the second layer is present above triangular void in the first layer (b) All the triangular voids are not covered by the spheres of the second layer (c) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangulare shapes of these voids do not overlap (d) Octahedral voids are formed when the triagular voids in th second layer exactly overlap with similar voids in the first layer

29.

Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure ? (a) A tetrehedral void is formed when a sphere of the second layer is present above triangular void in the first layer (b) All the triangular voids are not covered by the spheres of the second layer (c) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangulare shapes of these voids do not overlap (d) Octahedral voids are formed when the triagular voids in th second layer exactly overlap with similar voids in the first layer

Answer»

Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure ?

(a) A tetrehedral void is formed when a sphere of the second layer is present above triangular void in the first layer

(b) All the triangular voids are not covered by the spheres of the second layer

(c) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangulare shapes of these voids do not overlap

(d) Octahedral voids are formed when the triagular voids in th second layer exactly overlap with similar voids in the first layer

Discussion

30.	Why are certain drugs called enzyme inhibitors?
Answer» Why are certain drugs called enzyme inhibitors?

Discussion

31.	Question 2.29 Nalorphene (C19H21NO3), similar to morphine, is used combat withdrawal symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5×10−3 m aqueous solution required for the above dose.
Answer» Question 2.29 Nalorphene $(C_{19} H_{21} N O_{3})$ , similar to morphine, is used combat withdrawal symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of $1.5 \times 10^{- 3} m$ aqueous solution required for the above dose.

31.

Question 2.29 Nalorphene (C19H21NO3), similar to morphine, is used combat withdrawal symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5×10−3 m aqueous solution required for the above dose.

Answer»

Question 2.29

Nalorphene $(C_{19} H_{21} N O_{3})$ , similar to morphine, is used combat withdrawal symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of $1.5 \times 10^{- 3} m$ aqueous solution required for the above dose.

Discussion

32.	Given below are two reactions "A" abd "B". They are made to react with aqueous base NaOH. Which of the following is/are correct
Answer» Given below are two reactions "A" abd "B". They are made to react with aqueous base NaOH. Which of the following is/are correct

Discussion

33.	C1−C2 bond is shortest in:
Answer» $C_{1} - C_{2}$ bond is shortest in:

Discussion

34.	Which one among the following acid is called as para per-iodic acids?
Answer» Which one among the following acid is called as para per-iodic acids?

Discussion

35.	(a) Describe the following: (i) Acetylation (ii) Cannizzaro reaction (iii) Cross aldol condensation (iv) Decarboxylation
Answer» (a) Describe the following: (i) Acetylation (ii) Cannizzaro reaction (iii) Cross aldol condensation (iv) Decarboxylation

35.

(a) Describe the following: (i) Acetylation (ii) Cannizzaro reaction (iii) Cross aldol condensation (iv) Decarboxylation

Answer»

(a) Describe the following:

(i) Acetylation (ii) Cannizzaro reaction

(iii) Cross aldol condensation (iv) Decarboxylation

Discussion

36.	A solid having definite geometrical shape with flat faces and sharp edges is:
Answer» A solid having definite geometrical shape with flat faces and sharp edges is:

36.

A solid having definite geometrical shape with flat faces and sharp edges is:

Answer»

A solid having definite geometrical shape with flat faces and sharp edges is:

Discussion

37.	When water is dropped over sodium peroxide, the colourless gas produced is
Answer» When water is dropped over sodium peroxide, the colourless gas produced is

Discussion

38.	If 2 objects have equal masses and equal volume then ___will be the same for both objects?
Answer» If 2 objects have equal masses and equal volume then ___will be the same for both objects?

Discussion

39.	Ethylene is produced by : C4H8 Δ−→ 2C2H4The rate constant is 2.303×10−4sec−1. In what time (in seconds), the molar ratio of the ethylene to cyclobutane in reaction mixture attain the value of 100. (log5.1=0.7)
Answer» Ethylene is produced by : $C_{4} H_{8}$ $Δ - \to$ $2 C_{2} H_{4}$ The rate constant is $2.303 \times 10^{- 4} s e c^{- 1} .$ In what time (in seconds), the molar ratio of the ethylene to cyclobutane in reaction mixture attain the value of 100. $(l o g 5.1 = 0.7)$

Discussion

40.	Which of the following is the odd one out?
Answer» Which of the following is the odd one out?

Discussion

41.	Which one of the following therapies will target only cancer cells and not the normal body cells?
Answer» Which one of the following therapies will target only cancer cells and not the normal body cells?

Discussion

42.	Aspirin is also known as [CPMT 1989, 94; MP PET 1995]
Answer» Aspirin is also known as [CPMT 1989, 94; MP PET 1995]

Discussion

43.	The rate constant for the decomposition of hydrocarbons is 2.418×10−5 s−1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of preexponential factor?
Answer» The rate constant for the decomposition of hydrocarbons is $2.418 \times 10^{- 5} s^{- 1}$ at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of preexponential factor?

Discussion

44.	A two-step mechanism has been suggested for the reaction of nitric oxide and bromine: NO(g)+Br2(g)k1−→NOBr2(g) NOBr2(g)+NO(g)k2−→2NOBr(g) Observed rate law is, rate = k[NO]2[Br2] : Hence, rate determining step is
Answer» A two-step mechanism has been suggested for the reaction of nitric oxide and bromine: $N O (g) + B r_{2} (g) k_{1} - \to N O B r_{2} (g)$ $N O B r_{2} (g) + N O (g) k_{2} - \to 2 N O B r (g)$ Observed rate law is, rate = $k [N O]^{2} [B r_{2}]$ : Hence, rate determining step is

Discussion

45.	The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [ao is radius of first Bohr orbit]:
Answer» The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [ $a_{o}$ is radius of first Bohr orbit]:

Discussion

46.	The half -life of is 100. The time taken for the radioactivity of a sample of to decay to (116th) of its initial value is
Answer» The half -life of is 100. The time taken for the radioactivity of a sample of to decay to $(\frac{1}{16 t h})$ of its initial value is

Discussion

47.	NaH2P––O4 What will be the oxidation state of underlined element?
Answer» $N a H_{2} P - - O_{4}$ What will be the oxidation state of underlined element?

Discussion

48.	I want fromula list For PCM subject for JEE
Answer» I want fromula list For PCM subject for JEE

48.

I want fromula list For PCM subject for JEE

Answer»

I want fromula list

For PCM subject for JEE

Discussion

49.	Calculate the work done by a gas as it is taken from the state a to b, b to c and c to a as shown in figure.
Answer» Calculate the work done by a gas as it is taken from the state a to b, b to c and c to a as shown in figure.

49.

Calculate the work done by a gas as it is taken from the state a to b, b to c and c to a as shown in figure.

Answer»

Calculate the work done by a gas as it is taken from the state a to b, b to c and c to a as shown in figure.

Discussion

50.	Resonance is the delocalization of
Answer» Resonance is the delocalization of

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Anline on acetylation followed by the treatement with nitrating mixture gives a product which on hydrolysis gives compound 'X'. 'X' is:

Why is it necessary to use acetic acid and not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

How many moles of magnesium phosphate will contain 0.25 moles of oxygen atoms

The energy difference between the first two levels of hydrogen atom is 10.2 eV. For another element of atomic number 10 and mass number 20, the energy difference between the first two levels will be

Write equations of the following reactions Friedel Crafts reaction - alkylation of anisole. Nitration of anisole. Bromination of anisole in ethanoic acid medium. Friedel Crafts acetylation of anisole.

QUESTION 2.31 The depression in freezing point of water observed for the same amount of acetic acid, triehloroacetie acid and trifluoroacctie acid increases in the order given above. Explain briefly.

Mass of a mole of electrons is

The first ionisation potential of Na, Mg and Si are 496, 737, and 776 kJ mol−1 respectively. The ionisation potential of Al could be:

A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

A certain reaction has value of Kp=0.03 at 100 K and ΔrHo=921.2 cal mol−1. Calculate the value of Kp at 200 K.

Pressure-temperature relationship for an ideal gas undergoing adiabatic change is γ=CpCv

What is the one-step reaction between ethylenea and acitaldehyde?

In 2Na(S) + Cl2 → 2 NaCl (S) ; The oxidising agent is

The entropy change involved in the conversion of 1 mole of liquid water at 373 K to vapour will be: Given: △Hvap=2.257 kJ/g

Pressure of 1g of an ideal gas A at 27∘ C is found to be 2 bar.When 2 g of another ideal gas B is introduced in the same flask at same temperarture, the pressure becomes 3 bar.Find a relationship between their molecular masses.

When chlorobenzene is treated with NaNH2 in liquid ammonia at 196K, aniline is formed. This reaction takes place by

Assume a hypothetical nuclear fission reaction: X→Y+Z If the atomic masses of X,YandZ are respectively x,yandz calculate the maximum amount of heat generated if 1gramof X undergoes fission. Consider the molar mass of X to be M.

The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (molecular weight = 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?

4 g of copper was dissolved in concentrated nitric acid. The copper nitrate on strong heating gave 5 g of its oxide. The equivalent weight of copper is _______.

See the figure The valves of X and Y are opened simultaneously. The white fumes of NH4Cl will first form close to which of A, B and C?

The correct order of stability is:

Consider the following phenols The decreasing order of acidic nature of the above phenols is:

What is the correct order of stability?

A cyclic process ABCD is shown in the P-V diagram. Which of the following curves represents the same process?

The IUPAC name of the compound is :-

In a sample of wood, the reading of a counter is 32 dpm and in fresh sample of tree it is 122 dpm. Due to an error, the counter gives the reading 2 dpm in absence of 14C. The half-life of 14C is 5770 years. The approximate age (in years) of wood sample is:

If En is the energy required to remove the nth electron form the outer most shell of carbon then decreasing order of the energies is:

Why are certain drugs called enzyme inhibitors?

Question 2.29 Nalorphene (C19H21NO3), similar to morphine, is used combat withdrawal symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5×10−3 m aqueous solution required for the above dose.

Given below are two reactions "A" abd "B". They are made to react with aqueous base NaOH. Which of the following is/are correct

C1−C2 bond is shortest in:

Which one among the following acid is called as para per-iodic acids?

(a) Describe the following: (i) Acetylation (ii) Cannizzaro reaction (iii) Cross aldol condensation (iv) Decarboxylation

A solid having definite geometrical shape with flat faces and sharp edges is:

When water is dropped over sodium peroxide, the colourless gas produced is

If 2 objects have equal masses and equal volume then ___will be the same for both objects?

Ethylene is produced by : C4H8 Δ−→ 2C2H4The rate constant is 2.303×10−4sec−1. In what time (in seconds), the molar ratio of the ethylene to cyclobutane in reaction mixture attain the value of 100. (log5.1=0.7)

Which of the following is the odd one out?

Which one of the following therapies will target only cancer cells and not the normal body cells?

Aspirin is also known as [CPMT 1989, 94; MP PET 1995]

The rate constant for the decomposition of hydrocarbons is 2.418×10−5 s−1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of preexponential factor?

A two-step mechanism has been suggested for the reaction of nitric oxide and bromine: NO(g)+Br2(g)k1−→NOBr2(g) NOBr2(g)+NO(g)k2−→2NOBr(g) Observed rate law is, rate = k[NO]2[Br2] : Hence, rate determining step is

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [ao is radius of first Bohr orbit]:

The half -life of is 100. The time taken for the radioactivity of a sample of to decay to (116th) of its initial value is

NaH2P––O4 What will be the oxidation state of underlined element?

I want fromula list For PCM subject for JEE

Calculate the work done by a gas as it is taken from the state a to b, b to c and c to a as shown in figure.

Resonance is the delocalization of