46295 + Interview Questions in Chemistry

1.	Trans-alkenes are formed by the reduction of alkynes with:
Answer» Trans-alkenes are formed by the reduction of alkynes with:

Discussion

2.	when a hydrogen sample in ground state is bombarded then what potential is required to accelerate electron so that first paschen line is emitte
Answer» when a hydrogen sample in ground state is bombarded then what potential is required to accelerate electron so that first paschen line is emitte

Discussion

3.	For a reaction NO2(g) + CO(g) → NO(g) + CO2(g), the experimentally determined rate law is: Rate = k [NO2]2, the molecularity of this reaction is:
Answer» For a reaction NO₂(g) + CO(g) → NO(g) + CO₂(g), the experimentally determined rate law is: Rate = k [NO₂]², the molecularity of this reaction is:

Discussion

4.	Which of the following is/are electrophile?
Answer» Which of the following is/are electrophile?

Discussion

5.	Calculate the mass-volume percentage of 10 g CaCO3, if it is present in 200g of solution?(d=1.25g/ml)
Answer» Calculate the mass-volume percentage of 10 g CaCO3, if it is present in 200g of solution?(d=1.25g/ml)

Discussion

6.	A spherical balloon of volume 4.00×103 cm3 contains helium at a pressure of 1.20×105 Pa. How many moles of helium are in the balloon, if the average kinetic energy of the helium atoms is 3.60×10−22 J?
Answer» A spherical balloon of volume $4.00 \times 10^{3} {c m}^{3}$ contains helium at a pressure of $1.20 \times 10^{5} P a$ . How many moles of helium are in the balloon, if the average kinetic energy of the helium atoms is $3.60 \times 10^{- 22} J$ ?

Discussion

7.	in ccp type structure if hald of the face centered atoms are removed then percentage of vacant space in unit cell is approximately ?
Answer» in ccp type structure if hald of the face centered atoms are removed then percentage of vacant space in unit cell is approximately ?

Discussion

8.	What will be the n-factor (nf) for H3PO2 and H3BO3 respectively?
Answer» What will be the n-factor $(n_{f})$ for $H_{3} P O_{2}$ and $H_{3} B O_{3}$ respectively?

Discussion

9.	How do we know that in the given chemical equations what is the oxidation state of chlorine as chlorine can have +7,+5,+1,+3 and -7 as it's oxidation state KclO3----- k+1cl-1 . +O2
Answer» How do we know that in the given chemical equations what is the oxidation state of chlorine as chlorine can have +7,+5,+1,+3 and -7 as it's oxidation state KclO3----- k+1cl-1 . +O2

9.

How do we know that in the given chemical equations what is the oxidation state of chlorine as chlorine can have +7,+5,+1,+3 and -7 as it's oxidation state KclO3----- k+1cl-1 . +O2

Answer»

How do we know that in the given chemical equations what is the oxidation state of chlorine as chlorine can have +7,+5,+1,+3 and -7 as it's oxidation state

KclO3----- k+1cl-1 . +O2

Discussion

10.	SN1 solvolysis of 3-bromocyclohex-1-ene in ethanol gives:
Answer» $S_{N} 1$ solvolysis of 3-bromocyclohex-1-ene in ethanol gives:

Discussion

11.	How to find maxima and minima of a function explain concept in detail and what is use of finding maxima and minima of a function
Answer» How to find maxima and minima of a function explain concept in detail and what is use of finding maxima and minima of a function

Discussion

12.	Why can't there be more than 2 isomers of Glyceraldehyde (C3H6O3)?
Answer» Why can't there be more than 2 isomers of Glyceraldehyde (C3H6O3)?

Discussion

13.	Which of the following reactions gives CO as their major product?
Answer» Which of the following reactions gives CO as their major product?

Discussion

14.	ntQ. The number of particles crossing per unit area perpendicular to z-axis per unit time is given by N = -D(N2 -N1)/(Z2-Z1),where N2 &N1 are the number of particles per unit volume at Z2 & Z1 respectively. What is the dimensional formula for D?n
Answer» ntQ. The number of particles crossing per unit area perpendicular to z-axis per unit time is given by N = -D(N2 -N1)/(Z2-Z1),where N2 &N1 are the number of particles per unit volume at Z2 & Z1 respectively. What is the dimensional formula for D?n

Discussion

15.	The calculated spin only magnetic moment of Mn2+ ion is:
Answer» The calculated spin only magnetic moment of $M n^{2 +}$ ion is:

Discussion

16.	How is Benzene diazonium chloride converted to Benzene?
Answer» How is Benzene diazonium chloride converted to Benzene?

Discussion

17.	41.What is redistribution of electron
Answer» 41.What is redistribution of electron

Discussion

18.	in octahedral complexes with minimum four different monodentate ligand will show optical isomerism except (Ma2b2c2)this statement is correct or wrong
Answer» in octahedral complexes with minimum four different monodentate ligand will show optical isomerism except (Ma2b2c2) this statement is correct or wrong

Discussion

19.	let r be a relation define onset of whole numbers such that R ={(x,y):2x+5y=30,x,y€ W}.write the relation in roster form hence find its domain and range of R
Answer» let r be a relation define onset of whole numbers such that R ={(x,y):2x+5y=30,x,y€ W}.write the relation in roster form hence find its domain and range of R

Discussion

20.	A gaseous mixture contains 220 gram of carbon dioxide and 280 gram of Nitrogen gas if the partial pressure of Nitrogen gas in the mixture is 1.5 atmosphere then the partial pressure of carbon dioxide gas in the mixture will be
Answer» A gaseous mixture contains 220 gram of carbon dioxide and 280 gram of Nitrogen gas if the partial pressure of Nitrogen gas in the mixture is 1.5 atmosphere then the partial pressure of carbon dioxide gas in the mixture will be

Discussion

21.	Nalorphene(C19H21NO3),similar to morphine, is used to combat withdrawalsymptomsin narcotic users. Dose of nalorphene generally given is 1.5 mg.Calculatethe mass of 1.5 × 10−3maqueous solution required for the above dose.
Answer» Nalorphene (C₁₉H₂₁NO₃), similar to morphine, is used to combat withdrawal symptoms in narcotic users. Dose of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5 × 10⁻³m aqueous solution required for the above dose.

21.

Nalorphene(C19H21NO3),similar to morphine, is used to combat withdrawalsymptomsin narcotic users. Dose of nalorphene generally given is 1.5 mg.Calculatethe mass of 1.5 × 10−3maqueous solution required for the above dose.

Answer»

Nalorphene
(C₁₉H₂₁NO₃),
similar to morphine, is used to combat withdrawal

symptoms
in narcotic users. Dose of nalorphene generally given is 1.5 mg.

Calculate
the mass of 1.5 × 10⁻³m
aqueous solution required for the above dose.

Discussion

22.	Name a metal that is the most abundant in nature. Write a balanced chemical reaction when Aluminium reacts with NaOH.
Answer» Name a metal that is the most abundant in nature. Write a balanced chemical reaction when Aluminium reacts with NaOH.

Discussion

23.	The crystalline salt Na2SO4.xH2O on heating loses 55.9% of its mass and becomes anhydrous. The formula of the crystalline salt is:
Answer» The crystalline salt $N a_{2} S O_{4} . x H_{2} O$ on heating loses 55.9% of its mass and becomes anhydrous. The formula of the crystalline salt is:

Discussion

24.	The minimum quantity of H2S needed to precipitate 63.5 g of Cu2+ will be nearly -
Answer» The minimum quantity of $H_{2} S$ needed to precipitate $63.5 g$ of $C u^{2 +}$ will be nearly -

Discussion

25.	State any four characteristics of the image formed by a plane mirror.
Answer» State any four characteristics of the image formed by a plane mirror.

Discussion

26.	SiH4.is Lewis acid or base
Answer» SiH4.is Lewis acid or base

Discussion

27.	The completely miscible solution can be separated by
Answer» The completely miscible solution can be separated by

Discussion

28.	assertion : bond order of H2+is 0.5 reason electrons are removed from the antibonding molecular orbital from h2
Answer» assertion : bond order of H2+is 0.5 reason electrons are removed from the antibonding molecular orbital from h2

Discussion

29.	15. Calculate the mass of 1u in gram
Answer» 15. Calculate the mass of 1u in gram

Discussion

30.	The compound with the lowest boiling point is:
Answer» The compound with the lowest boiling point is:

Discussion

31.	IE1 and IE2 of Mg are 178 and 348 kcal respectively. The energy required for the following reaction is: Mg→Mg2++2e− (Where IE = ionization energy)
Answer» $I E_{1}$ and $I E_{2}$ of $M g$ are $178$ and $348 kcal$ respectively. The energy required for the following reaction is: $M g \to M g^{2 +} + 2 e^{-}$ (Where $I E$ = ionization energy)

Discussion

32.	. A beam of helium atoms moves with a velocity of 2 x 10 ms Find the wavelength ofparticles constituting with the beam.
Answer» . A beam of helium atoms moves with a velocity of 2 x 10 ms Find the wavelength ofparticles constituting with the beam.

Discussion

33.	Ethylbenzene with bromine in the presence of FeBr3 predominantly gives
Answer» Ethylbenzene with bromine in the presence of $F e B r_{3}$ predominantly gives

Discussion

34.	Dalton’s law of partial pressure is not applicable to a mixture of
Answer» Dalton’s law of partial pressure is not applicable to a mixture of

Discussion

35.	23. Draw the Lewis dot structure of (1) HCLO4 (2) HNO (3) H3Po4 (4) H3PO3 (5) H2SO5.
Answer» 23. Draw the Lewis dot structure of (1) HCLO4 (2) HNO (3) H3Po4 (4) H3PO3 (5) H2SO5.

Discussion

36.	58 If single and triple bonds both are present at same position for two ends then numbering should be done from which bond side
Answer» 58 If single and triple bonds both are present at same position for two ends then numbering should be done from which bond side

Discussion

37.	full form of :-)1.))ccl4 2.cf4 3.h2co3 4.h2co3 minu
Answer» full form of :-)1.))ccl4 2.cf4 3.h2co3 4.h2co3 minu

Discussion

38.	For an atom of ion having singe electron, the following wavelengths are observed .The value of missing wavelength λ is (in mm)
Answer» For an atom of ion having singe electron, the following wavelengths are observed .The value of missing wavelength $λ$ is (in mm)

38.

For an atom of ion having singe electron, the following wavelengths are observed .The value of missing wavelength λ is (in mm)

Answer»

For an atom of ion having singe electron, the following wavelengths are observed .The value of missing wavelength $λ$ is (in mm)

Discussion

39.	The relative reactivity of 1, 2^° and 3^° hydrogens in chlorination reaction has been found to be 1:3.8:5. In the reaction The ratio of the amount of the product A, B, C and D is expected to be(2) 3 : 7.6 :5:6(4) 1 :7.6 5: 1(1) 1:3.8: 5(3) 3:78:5:3
Answer» The relative reactivity of 1, 2^° and 3^° hydrogens in chlorination reaction has been found to be 1:3.8:5. In the reaction The ratio of the amount of the product A, B, C and D is expected to be(2) 3 : 7.6 :5:6(4) 1 :7.6 5: 1(1) 1:3.8: 5(3) 3:78:5:3

Discussion

40.	Reason for geometrical isomerism by 2-butene is:
Answer» Reason for geometrical isomerism by 2-butene is:

Discussion

41.	36.At a certain temperature and 2 ATM pressure equilibrium constant KP is 25 for the reaction of SO2(g) +No2(g)---------- SO3(g) + NO(g).initially we take 2 moles of each of the four gases and 2 moles of inert gas what would be the equilibrium partial pressure of an NO2
Answer» 36.At a certain temperature and 2 ATM pressure equilibrium constant KP is 25 for the reaction of SO2(g) +No2(g)---------- SO3(g) + NO(g).initially we take 2 moles of each of the four gases and 2 moles of inert gas what would be the equilibrium partial pressure of an NO2

Discussion

42.	Q. The number of three centre two electron in a molecule of diborane(B2H6) is (1) 0 (2) 2 (3) 4 (4) 6
Answer» Q. The number of three centre two electron in a molecule of diborane(B2H6) is (1) 0 (2) 2 (3) 4 (4) 6

Discussion

43.	1 g mixture of CaCO3 and NaCl reacts completely with 100 ml of N/10 HCl. The % of CaCO3 in the mixture is
Answer» 1 g mixture of CaCO3 and NaCl reacts completely with 100 ml of N/10 HCl. The % of CaCO3 in the mixture is

Discussion

44.	In a container equilibrium, N2O4(g)⇌2NO2(g) is attained at 25∘C. The total equilibrium pressure in container is 380 torr. If equilibrium constant of above equilibrium is 0.667 atm, then degree of dissociation of N2O4 at this temperature will be:
Answer» In a container equilibrium, $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$ is attained at $25^{\circ} C$ . The total equilibrium pressure in container is $380 torr$ . If equilibrium constant of above equilibrium is $0.667 atm$ , then degree of dissociation of $N_{2} O_{4}$ at this temperature will be:

Discussion

45.	Why hexagonal closed packing is more efficient than square close packing
Answer» Why hexagonal closed packing is more efficient than square close packing

Discussion

46.	Which of the following compound(s) will give CO2 on reaction with NaHCO3?
Answer» Which of the following compound(s) will give $C O_{2}$ on reaction with $N a H C O_{3}$ ?

Discussion

47.	Number of compounds which can give Haloform reaction, is:
Answer» Number of compounds which can give Haloform reaction, is:

Discussion

48.	if van't Hoff factor is 2 then what is the abnormal molar mass of the solute (normal molar mass of solute is 50 g mol-¹).
Answer» if van't Hoff factor is 2 then what is the abnormal molar mass of the solute (normal molar mass of solute is 50 g mol-¹).

Discussion

49.	In the presence of benzoylperoxide propene reacts with HCl gas. The product is:
Answer» In the presence of benzoylperoxide propene reacts with HCl gas. The product is:

Discussion

50.	11. A compound of C, H&O consist of 40% 'C' , 6.67% 'H' and 'O'. Find the empirical farmula. If molecular mass of the compounds 180 u. Find its molecular farmula.
Answer» 11. A compound of C, H&O consist of 40% 'C' , 6.67% 'H' and 'O'. Find the empirical farmula. If molecular mass of the compounds 180 u. Find its molecular farmula.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Trans-alkenes are formed by the reduction of alkynes with:

when a hydrogen sample in ground state is bombarded then what potential is required to accelerate electron so that first paschen line is emitte

For a reaction NO2(g) + CO(g) → NO(g) + CO2(g), the experimentally determined rate law is: Rate = k [NO2]2, the molecularity of this reaction is:

Which of the following is/are electrophile?

Calculate the mass-volume percentage of 10 g CaCO3, if it is present in 200g of solution?(d=1.25g/ml)

A spherical balloon of volume 4.00×103 cm3 contains helium at a pressure of 1.20×105 Pa. How many moles of helium are in the balloon, if the average kinetic energy of the helium atoms is 3.60×10−22 J?

in ccp type structure if hald of the face centered atoms are removed then percentage of vacant space in unit cell is approximately ?

What will be the n-factor (nf) for H3PO2 and H3BO3 respectively?

How do we know that in the given chemical equations what is the oxidation state of chlorine as chlorine can have +7,+5,+1,+3 and -7 as it's oxidation state KclO3----- k+1cl-1 . +O2

SN1 solvolysis of 3-bromocyclohex-1-ene in ethanol gives:

How to find maxima and minima of a function explain concept in detail and what is use of finding maxima and minima of a function

Why can't there be more than 2 isomers of Glyceraldehyde (C3H6O3)?

Which of the following reactions gives CO as their major product?

ntQ. The number of particles crossing per unit area perpendicular to z-axis per unit time is given by N = -D(N2 -N1)/(Z2-Z1),where N2 &N1 are the number of particles per unit volume at Z2 & Z1 respectively. What is the dimensional formula for D?n

The calculated spin only magnetic moment of Mn2+ ion is:

How is Benzene diazonium chloride converted to Benzene?

41.What is redistribution of electron

in octahedral complexes with minimum four different monodentate ligand will show optical isomerism except (Ma2b2c2)this statement is correct or wrong

let r be a relation define onset of whole numbers such that R ={(x,y):2x+5y=30,x,y€ W}.write the relation in roster form hence find its domain and range of R

A gaseous mixture contains 220 gram of carbon dioxide and 280 gram of Nitrogen gas if the partial pressure of Nitrogen gas in the mixture is 1.5 atmosphere then the partial pressure of carbon dioxide gas in the mixture will be

Nalorphene(C19H21NO3),similar to morphine, is used to combat withdrawalsymptomsin narcotic users. Dose of nalorphene generally given is 1.5 mg.Calculatethe mass of 1.5 × 10−3maqueous solution required for the above dose.

Name a metal that is the most abundant in nature. Write a balanced chemical reaction when Aluminium reacts with NaOH.

The crystalline salt Na2SO4.xH2O on heating loses 55.9% of its mass and becomes anhydrous. The formula of the crystalline salt is:

The minimum quantity of H2S needed to precipitate 63.5 g of Cu2+ will be nearly -

State any four characteristics of the image formed by a plane mirror.

SiH4.is Lewis acid or base

The completely miscible solution can be separated by

assertion : bond order of H2+is 0.5 reason electrons are removed from the antibonding molecular orbital from h2

15. Calculate the mass of 1u in gram

The compound with the lowest boiling point is:

IE1 and IE2 of Mg are 178 and 348 kcal respectively. The energy required for the following reaction is: Mg→Mg2++2e− (Where IE = ionization energy)

. A beam of helium atoms moves with a velocity of 2 x 10 ms Find the wavelength ofparticles constituting with the beam.

Ethylbenzene with bromine in the presence of FeBr3 predominantly gives

Dalton’s law of partial pressure is not applicable to a mixture of

23. Draw the Lewis dot structure of (1) HCLO4 (2) HNO (3) H3Po4 (4) H3PO3 (5) H2SO5.

58 If single and triple bonds both are present at same position for two ends then numbering should be done from which bond side

full form of :-)1.))ccl4 2.cf4 3.h2co3 4.h2co3 minu

For an atom of ion having singe electron, the following wavelengths are observed .The value of missing wavelength λ is (in mm)

The relative reactivity of 1, 2^° and 3^° hydrogens in chlorination reaction has been found to be 1:3.8:5. In the reaction The ratio of the amount of the product A, B, C and D is expected to be(2) 3 : 7.6 :5:6(4) 1 :7.6 5: 1(1) 1:3.8: 5(3) 3:78:5:3

Reason for geometrical isomerism by 2-butene is:

36.At a certain temperature and 2 ATM pressure equilibrium constant KP is 25 for the reaction of SO2(g) +No2(g)---------- SO3(g) + NO(g).initially we take 2 moles of each of the four gases and 2 moles of inert gas what would be the equilibrium partial pressure of an NO2

Q. The number of three centre two electron in a molecule of diborane(B2H6) is (1) 0 (2) 2 (3) 4 (4) 6

1 g mixture of CaCO3 and NaCl reacts completely with 100 ml of N/10 HCl. The % of CaCO3 in the mixture is

In a container equilibrium, N2O4(g)⇌2NO2(g) is attained at 25∘C. The total equilibrium pressure in container is 380 torr. If equilibrium constant of above equilibrium is 0.667 atm, then degree of dissociation of N2O4 at this temperature will be:

Why hexagonal closed packing is more efficient than square close packing

Which of the following compound(s) will give CO2 on reaction with NaHCO3?

Number of compounds which can give Haloform reaction, is:

if van't Hoff factor is 2 then what is the abnormal molar mass of the solute (normal molar mass of solute is 50 g mol-¹).

In the presence of benzoylperoxide propene reacts with HCl gas. The product is:

11. A compound of C, H&O consist of 40% 'C' , 6.67% 'H' and 'O'. Find the empirical farmula. If molecular mass of the compounds 180 u. Find its molecular farmula.