46295 + Interview Questions in Chemistry

1.	Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?
Answer» Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?

Discussion

2.	Which among the following is a biodegradable waste?
Answer» Which among the following is a biodegradable waste?

Discussion

3.	The effect of increasing the pressure on the equilibrium 2A + 3B ⇌ 3 A + 2B is
Answer» The effect of increasing the pressure on the equilibrium 2A + 3B $⇌$ 3 A + 2B is

3.

The effect of increasing the pressure on the equilibrium 2A + 3B ⇌ 3 A + 2B is

Answer»

The effect of increasing the pressure on the equilibrium

2A + 3B $⇌$ 3 A + 2B is

Discussion

4.	TiCl4 fumes strongly in moist air and is hydrolyzed by water to give
Answer» $T i C l_{4}$ fumes strongly in moist air and is hydrolyzed by water to give

Discussion

5.	If the electronic configuration of an element is 1s22s22p63s23p63d54s1 then the number electrons involved in bonding will be:
Answer» If the electronic configuration of an element is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$ then the number electrons involved in bonding will be:

Discussion

6.	Phosgene is the common name for [DPMT 1983; CPMT 1993; MP PMT 1994; Kurukshetra CEE 1998; RPMT 2000, 02]
Answer» Phosgene is the common name for [DPMT 1983; CPMT 1993; MP PMT 1994; Kurukshetra CEE 1998; RPMT 2000, 02]

6.

Phosgene is the common name for [DPMT 1983; CPMT 1993; MP PMT 1994; Kurukshetra CEE 1998; RPMT 2000, 02]

Answer»

Phosgene is the common name for

[DPMT 1983; CPMT 1993; MP PMT 1994;

Kurukshetra CEE 1998; RPMT 2000, 02]

Discussion

7.	Find the volume of the Gas obtained from 2 ml solid lump of CO2 at 27∘C and 2 atmospheric pressure,when density of solid CO2 is 1.53 gm/ml
Answer» Find the volume of the Gas obtained from 2 ml solid lump of $C O_{2}$ at $27^{\circ} C$ and 2 atmospheric pressure,when density of solid $C O_{2}$ is 1.53 gm/ml

Discussion

8.	Which of these statements about [Co(CN)6]3− is true ?
Answer» Which of these statements about $[C o (C N)_{6}]^{3 -}$ is true ?

Discussion

9.	Statements: N % A, A # L, F $ N Conclusions: I. L % F II. F % A
Answer» Statements: N % A, A $#$ L, F $$$ N Conclusions: I. L % F II. F % A

Discussion

10.	The energy of an electron in the second and the third Bohr's orbits of a hydrogen atom is −5.42×10−12 erg and −2.41×10−12 erg respectively. Calculate the wavelength of the emitted radiation when the electron drops from the third to the second orbit.
Answer» The energy of an electron in the second and the third Bohr's orbits of a hydrogen atom is $- 5.42 \times 10^{- 12} erg$ and $- 2.41 \times 10^{- 12} erg$ respectively. Calculate the wavelength of the emitted radiation when the electron drops from the third to the second orbit.

Discussion

11.	In closest packing of atoms
Answer» In closest packing of atoms

Discussion

12.	The number of molecules in 4.25 g of ammonia is approximately
Answer» The number of molecules in 4.25 g of ammonia is approximately

Discussion

13.	Reagent(s) which can be used to bring about the following transformation is/are:
Answer» Reagent(s) which can be used to bring about the following transformation is/are:

Discussion

14.	Which of the following curve is in accordance with freundlich adsorption isotherm?
Answer» Which of the following curve is in accordance with freundlich adsorption isotherm?

Discussion

15.	Discuss the trend of the following (i) Thermal stability of carbonates of Group 2 elements. (ii) The solubility and the nature fo oxides of group 2 elements.
Answer» Discuss the trend of the following (i) Thermal stability of carbonates of Group 2 elements. (ii) The solubility and the nature fo oxides of group 2 elements.

15.

Discuss the trend of the following (i) Thermal stability of carbonates of Group 2 elements. (ii) The solubility and the nature fo oxides of group 2 elements.

Answer»

Discuss the trend of the following
(i) Thermal stability of carbonates of Group 2 elements.

(ii) The solubility and the nature fo oxides of group 2 elements.

Discussion

16.	Which of the species below is an intermediate in the reaction ?
Answer» Which of the species below is an intermediate in the reaction ?

Discussion

17.	What are the major parts that I have to focus on the chapter Chemical Kinetics and chapter solutions?
Answer» What are the major parts that I have to focus on the chapter Chemical Kinetics and chapter solutions?

Discussion

18.	How should i download the notes of atomic structure from byjus site ????
Answer» How should i download the notes of atomic structure from byjus site ????

Discussion

19.	Find the total number of elements given below, which have higher ionisation energy than their both adjacent elements (in a period). Be,B,N,P,C,S,Mg
Answer» Find the total number of elements given below, which have higher ionisation energy than their both adjacent elements (in a period). $B e, B, N, P, C, S, M g$

Discussion

20.	896 ml of a mixture of CO and CO2 weigh 1.28g at ntp. Calculate the volume of co2 in the mixture at ntp.
Answer» 896 ml of a mixture of CO and CO2 weigh 1.28g at ntp. Calculate the volume of co2 in the mixture at ntp.

Discussion

21.	What are antipyretics?
Answer» What are antipyretics?

Discussion

22.	The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.
Answer» The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

Discussion

23.	A certain video in Summary II of Mole Concept, titled "Normality" gives a formula : (Molarity/Normality) = n-factor. Is this formula correct ? I believe there is a blatant mistake in it.
Answer» A certain video in Summary II of Mole Concept, titled "Normality" gives a formula : (Molarity/Normality) = n-factor. Is this formula correct ? I believe there is a blatant mistake in it.

23.

A certain video in Summary II of Mole Concept, titled "Normality" gives a formula : (Molarity/Normality) = n-factor. Is this formula correct ? I believe there is a blatant mistake in it.

Answer»

A certain video in Summary II of Mole Concept, titled "Normality" gives a formula : (Molarity/Normality) = n-factor.

Is this formula correct ? I believe there is a blatant mistake in it.

Discussion

24.	Why does carbon not form C2 atom with 4 covalent bonds ? When it form 3 covalent bonds then why not 4 bonds.
Answer» Why does carbon not form C₂atom with 4 covalent bonds ? When it form 3 covalent bonds then why not 4 bonds.

Discussion

25.	Number of isomeric alkynes of C5H8 is
Answer» Number of isomeric alkynes of C₅H₈ is

Discussion

26.	For the following oxidation half reaction, 2S2O2−3(Reducing ~agent)→S4O2−6+2e− Calculate the equivalent weight of S2O2−3. (Given: M is the molecular weight of S2O2−3)
Answer» For the following oxidation half reaction, $2 S_{2} O_{3}^{2 -} (Reducing ~agent) \to S_{4} O_{6}^{2 -} + 2 e^{-}$ Calculate the equivalent weight of $S_{2} O_{3}^{2 -}$ . (Given: $M$ is the molecular weight of $S_{2} O_{3}^{2 -}$ )

Discussion

27.	How is Mendeleev's table based on atomic mases?? It was asked in one the questions
Answer» How is Mendeleev's table based on atomic mases?? It was asked in one the questions

27.

How is Mendeleev's table based on atomic mases?? It was asked in one the questions

Answer»

How is Mendeleev's table based on atomic mases??

It was asked in one the questions

Discussion

28.	A mixture of NaNO3 , Zn powder and NaOH solution is heated- what will happen?write the chemical equation.
Answer» A mixture of NaNO₃, Zn powder and NaOH solution is heated- what will happen?write the chemical equation.

Discussion

29.	A gas is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. The final temperature, when the pressure in the manometer indicates an absolute pressure of 400 torr is:
Answer» A gas is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. The final temperature, when the pressure in the manometer indicates an absolute pressure of 400 torr is:

Discussion

30.	Hydrogen fluoride is a liquid unlike other hydrogen halides because:
Answer» Hydrogen fluoride is a liquid unlike other hydrogen halides because:

Discussion

31.	A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in the figure. On the basis of this mark the correct option. (a) Average rate upto 40 s is V3−V240 (b) Average rate upto 40 s isV3−V240−30 (c) Average rate upto 40 s isV340 (d) Average rate upto 40 s isV3−V140−20
Answer» A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in the figure. On the basis of this mark the correct option. (a) Average rate upto 40 s is $\frac{V_{3} - V_{2}}{40}$ (b) Average rate upto 40 s is $\frac{V_{3} - V_{2}}{40 - 30}$ (c) Average rate upto 40 s is $\frac{V_{3}}{40}$ (d) Average rate upto 40 s is $\frac{V_{3} - V_{1}}{40 - 20}$

31.

A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in the figure. On the basis of this mark the correct option. (a) Average rate upto 40 s is V3−V240 (b) Average rate upto 40 s isV3−V240−30 (c) Average rate upto 40 s isV340 (d) Average rate upto 40 s isV3−V140−20

Answer»

A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in the figure. On the basis of this mark the correct option.

(a) Average rate upto 40 s is $\frac{V_{3} - V_{2}}{40}$
(b) Average rate upto 40 s is $\frac{V_{3} - V_{2}}{40 - 30}$
(c) Average rate upto 40 s is $\frac{V_{3}}{40}$
(d) Average rate upto 40 s is $\frac{V_{3} - V_{1}}{40 - 20}$

Discussion

32.	Which of the following metals reacts with both acid and hot concentrated alkalis to form hydrogen gas:
Answer» Which of the following metals reacts with both acid and hot concentrated alkalis to form hydrogen gas:

Discussion

33.	In which of the following species is the bond angle maximum?
Answer» In which of the following species is the bond angle maximum?

Discussion

34.	The number of d-electrons in Fe2+ (Z=26) is not equal to the number of electrons in which of the following?
Answer» The number of d-electrons in $F e^{2 +}$ $(Z = 26)$ is not equal to the number of electrons in which of the following $?$

Discussion

35.	The correct statement(s) about the compound given below
Answer» The correct statement(s) about the compound given below

35.

The correct statement(s) about the compound given below

Answer»

The correct statement(s) about the compound given below

Discussion

36.	How much energy is needed to ionize a hydrogen atom if electron is present in n=1 orbit?
Answer» How much energy is needed to ionize a hydrogen atom if electron is present in n=1 orbit?

Discussion

37.	The colligative properties of a solution are
Answer» The colligative properties of a solution are

Discussion

38.	One gram mole of a gas at STP occupies 22.4L volume. This fact was derived from –
Answer» One gram mole of a gas at STP occupies 22.4L volume. This fact was derived from –

Discussion

39.	Assertion : X-rays travel with the speed of light. Reason: X-rays are electromagnetic rays.
Answer» Assertion : X-rays travel with the speed of light. Reason: X-rays are electromagnetic rays.

Discussion

40.	The least and most abundant alkali metals in the earth crust are
Answer» The least and most abundant alkali metals in the earth crust are

Discussion

41.	The electrolytic process used for extaction of aluminium from bauxite is
Answer» The electrolytic process used for extaction of aluminium from bauxite is

Discussion

42.	Which colloids are irreversible?
Answer» Which colloids are irreversible?

Discussion

43.	How many different functional groups are present in the sedative called thalidomide (structure given below)?
Answer» How many different functional groups are present in the sedative called thalidomide (structure given below)?

Discussion

44.	Hard X-rays for the study of fractures in bones should have a minimum wavelength of 10−11 m. The accelerating voltage for electrons in X-ray machine should be
Answer» Hard X-rays for the study of fractures in bones should have a minimum wavelength of $10^{- 11}$ m. The accelerating voltage for electrons in X-ray machine should be

Discussion

45.	If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is
Answer» If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is

Discussion

46.	Consider the following sets of quantum numbers. nlm1ms(i)31−2−12(ii)210+12(iii)42−1−12(iv)320+12(v)20+1−12 Which of the following set of quantum numbers is possible
Answer» Consider the following sets of quantum numbers. $\begin{matrix} n & l & m_{1} & m_{s} (i) & 3 & 1 & - 2 & - \frac{1}{2} (i i) & 2 & 1 & 0 & + \frac{1}{2} (i i i) & 4 & 2 & - 1 & - \frac{1}{2} (i v) & 3 & 2 & 0 & + \frac{1}{2} (v) & 2 & 0 & + 1 & - \frac{1}{2} \end{matrix}$ Which of the following set of quantum numbers is possible

Discussion

47.	Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants. It is because
Answer» Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants. It is because

Discussion

48.	Consider the inter conversion of nitrosotriaceto amine into nitrogen, phorone and water. The reaction is 1st order in each direction, with an equilibrium constant of 104. The activation energy for the backward reaction is 57.45 kJ/mol. Assume its Arrhenius pre exponential factor as 1012 s−1. What is the expected forward constant at 300 K, if we initiate this reaction starting with only reactant?
Answer» Consider the inter conversion of nitrosotriaceto amine into nitrogen, phorone and water. The reaction is $1^{s t}$ order in each direction, with an equilibrium constant of $10^{4}$ . The activation energy for the backward reaction is 57.45 kJ/mol. Assume its Arrhenius pre exponential factor as $10^{12} s^{- 1}$ . What is the expected forward constant at 300 K, if we initiate this reaction starting with only reactant?

Discussion

49.	Compare the density of aldehyde, and ketone.
Answer» Compare the density of aldehyde, and ketone.

Discussion

50.	CH3CH2Cl NaCN−−−−→ XNiH2−−→ YAcetic−−−−−→anhydrideZ 'Z' in the above sequence is
Answer» $C H_{3} C H_{2} C l N a C N - --- \to X \frac{N i}{H_{2}} - - \to Y A c e t i c - ---- \to a n h y d r i d e Z$ 'Z' in the above sequence is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?

Which among the following is a biodegradable waste?

The effect of increasing the pressure on the equilibrium 2A + 3B ⇌ 3 A + 2B is

TiCl4 fumes strongly in moist air and is hydrolyzed by water to give

If the electronic configuration of an element is 1s22s22p63s23p63d54s1 then the number electrons involved in bonding will be:

Phosgene is the common name for [DPMT 1983; CPMT 1993; MP PMT 1994; Kurukshetra CEE 1998; RPMT 2000, 02]

Find the volume of the Gas obtained from 2 ml solid lump of CO2 at 27∘C and 2 atmospheric pressure,when density of solid CO2 is 1.53 gm/ml

Which of these statements about [Co(CN)6]3− is true ?

Statements: N % A, A # L, F $ N Conclusions: I. L % F II. F % A

The energy of an electron in the second and the third Bohr's orbits of a hydrogen atom is −5.42×10−12 erg and −2.41×10−12 erg respectively. Calculate the wavelength of the emitted radiation when the electron drops from the third to the second orbit.

In closest packing of atoms

The number of molecules in 4.25 g of ammonia is approximately

Reagent(s) which can be used to bring about the following transformation is/are:

Which of the following curve is in accordance with freundlich adsorption isotherm?

Discuss the trend of the following (i) Thermal stability of carbonates of Group 2 elements. (ii) The solubility and the nature fo oxides of group 2 elements.

Which of the species below is an intermediate in the reaction ?

What are the major parts that I have to focus on the chapter Chemical Kinetics and chapter solutions?

How should i download the notes of atomic structure from byjus site ????

Find the total number of elements given below, which have higher ionisation energy than their both adjacent elements (in a period). Be,B,N,P,C,S,Mg

896 ml of a mixture of CO and CO2 weigh 1.28g at ntp. Calculate the volume of co2 in the mixture at ntp.

What are antipyretics?

The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

A certain video in Summary II of Mole Concept, titled "Normality" gives a formula : (Molarity/Normality) = n-factor. Is this formula correct ? I believe there is a blatant mistake in it.

Why does carbon not form C​​​​​​2 atom with 4 covalent bonds ? When it form 3 covalent bonds then why not 4 bonds.

Number of isomeric alkynes of C5H8 is

For the following oxidation half reaction, 2S2O2−3(Reducing ~agent)→S4O2−6+2e− Calculate the equivalent weight of S2O2−3. (Given: M is the molecular weight of S2O2−3)

How is Mendeleev's table based on atomic mases?? It was asked in one the questions

A mixture of NaNO​​​3 ​​​​​​, Zn powder and NaOH solution is heated- what will happen?write the chemical equation.

A gas is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. The final temperature, when the pressure in the manometer indicates an absolute pressure of 400 torr is:

Hydrogen fluoride is a liquid unlike other hydrogen halides because:

Which of the following metals reacts with both acid and hot concentrated alkalis to form hydrogen gas:

In which of the following species is the bond angle maximum?

The number of d-electrons in Fe2+ (Z=26) is not equal to the number of electrons in which of the following?

The correct statement(s) about the compound given below

How much energy is needed to ionize a hydrogen atom if electron is present in n=1 orbit?

The colligative properties of a solution are

One gram mole of a gas at STP occupies 22.4L volume. This fact was derived from –

Assertion : X-rays travel with the speed of light. Reason: X-rays are electromagnetic rays.

The least and most abundant alkali metals in the earth crust are

The electrolytic process used for extaction of aluminium from bauxite is

Which colloids are irreversible?

How many different functional groups are present in the sedative called thalidomide (structure given below)?

Hard X-rays for the study of fractures in bones should have a minimum wavelength of 10−11 m. The accelerating voltage for electrons in X-ray machine should be

If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is

Consider the following sets of quantum numbers. nlm1ms(i)31−2−12(ii)210+12(iii)42−1−12(iv)320+12(v)20+1−12 Which of the following set of quantum numbers is possible

Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants. It is because

Compare the density of aldehyde, and ketone.

CH3CH2Cl NaCN−−−−→ XNiH2−−→ YAcetic−−−−−→anhydrideZ 'Z' in the above sequence is

Why does carbon not form C2 atom with 4 covalent bonds ? When it form 3 covalent bonds then why not 4 bonds.

A mixture of NaNO3 , Zn powder and NaOH solution is heated- what will happen?write the chemical equation.