46295 + Interview Questions in Chemistry

1.	The volume of Cl2 at STP react with 1 gm Fe to produce FeCl3 will be
Answer» The volume of $C l_{2}$ at $S T P$ react with $1 gm F e$ to produce $F e C l_{3}$ will be

Discussion

2.	Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe
Answer» Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe

2.

Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe

Answer»

Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe

Discussion

3.	why rusting is a redox reaction?
Answer» why rusting is a redox reaction?

Discussion

4.	58.One c.c of phosphoric acid was diluted to 250 cc; 25cc of this solution required 34. 8 CC of 0. 102N NaoH for neutralization, using phenolphthalein as indicator. What is the specific gravity of the acid?
Answer» 58.One c.c of phosphoric acid was diluted to 250 cc; 25cc of this solution required 34. 8 CC of 0. 102N NaoH for neutralization, using phenolphthalein as indicator. What is the specific gravity of the acid?

Discussion

5.	NaOH + PbO = x + H2ONaOH + SnO2 = y + H2ONaOH + H2O + Al = z + H2 Sum of number of atom present in one molecule each of x,y,z isa) 5b) 10c) 11d) 15
Answer» NaOH + PbO = x + H2O NaOH + SnO2 = y + H2O NaOH + H2O + Al = z + H2 Sum of number of atom present in one molecule each of x,y,z is a) 5 b) 10 c) 11 d) 15

Discussion

6.	1 mole of NH3 gas at 27∘C is expanded in reversible adiabatic condition to make its volume 8 times (γ=1.33). Final temperature and magnitude of work done respectively are:
Answer» $1$ mole of $N H_{3}$ gas at $27^{\circ} C$ is expanded in reversible adiabatic condition to make its volume $8$ times $(γ = 1.33)$ . Final temperature and magnitude of work done respectively are:

Discussion

7.	The species Ar,K+ and Ca2+ contain the same number of electrons. In which order do their radii increase?
Answer» The species $A r, K^{+} a n d C a^{2 +}$ contain the same number of electrons. In which order do their radii increase?

Discussion

8.	If an object weighs 90N on the surface of the earth . Then find the height at which it will weigh 40N ?? (The radius of the earth is R ). a) R/2 b) root 2 X R
Answer» If an object weighs 90N on the surface of the earth . Then find the height at which it will weigh 40N ?? (The radius of the earth is R ). a) R/2 b) root 2 X R

Discussion

9.	In how many equal parts will a 45⁰-90⁰-45⁰ set square divide a circle into, keeping the vertex of 45⁰ at the centre of the circle, and repeatedly rotating the set square by that angle along the whole circle?
Answer» In how many equal parts will a 45⁰-90⁰-45⁰ set square divide a circle into, keeping the vertex of 45⁰ at the centre of the circle, and repeatedly rotating the set square by that angle along the whole circle?

Discussion

10.	The compound(s) formed upon combustion of sodium metal in excess air is(are)
Answer» The compound(s) formed upon combustion of sodium metal in excess air is(are)

Discussion

11.	The frequency of 1st line of Balmer series in H- atom is ν0. If the frequency of the same line emitted by singly ionized He atom is xν0, then x is
Answer» The frequency of $1^{s t}$ line of Balmer series in $H$ - atom is $ν_{0}$ . If the frequency of the same line emitted by singly ionized $He$ atom is $x ν_{0}$ , then $x$ is

Discussion

12.	Which of the following are correct names according to IUPAC rules?
Answer» Which of the following are correct names according to IUPAC rules?

Discussion

13.	calculate the partial pressure of CO from the following data
Answer» calculate the partial pressure of CO from the following data

Discussion

14.	When more than ten amino acids react, then the product formed is called:
Answer» When more than ten amino acids react, then the product formed is called:

Discussion

15.	what is homo polymer?
Answer» what is homo polymer?

Discussion

16.	Is the kohlrausch law same for both weak and strong electrolyte?
Answer» Is the kohlrausch law same for both weak and strong electrolyte?

Discussion

17.	among the following the most reactive towards alc KOH is 1)CH2=CHBr 2)Ch3CoCh2CH2Br (3)Ch3Ch2Br (4)CH3CH2Ch2B
Answer» among the following the most reactive towards alc KOH is 1)CH2=CHBr 2)Ch3CoCh2CH2Br (3)Ch3Ch2Br (4)CH3CH2Ch2B

Discussion

18.	59. an amount of solid NH4HS is placed in a flask already containing ammonia gas at a certain temperature and 0.50atm pressure ammonium hydrogen sulphide decomposes to yeild NH3 and H2S gases in the flask . when the decomposition reaction reaches equilibrium the total pressure in the flask rises to 0.84atm . the equilibrium constant for NH4HS decomposition at this temperature is ?
Answer» 59. an amount of solid NH4HS is placed in a flask already containing ammonia gas at a certain temperature and 0.50atm pressure ammonium hydrogen sulphide decomposes to yeild NH3 and H2S gases in the flask . when the decomposition reaction reaches equilibrium the total pressure in the flask rises to 0.84atm . the equilibrium constant for NH4HS decomposition at this temperature is ?

Discussion

19.	C6H5N+2Cl−H3PO2−−−−→H2OX+N2↑+HCl+H3PO3The compound X is :
Answer» $C_{6} H_{5} N_{2}^{+} C l^{-} H_{3} P O_{2} - --- \to H_{2} O X + N_{2} ↑ + H C l + H_{3} P O_{3}$ The compound X is :

Discussion

20.	mass percenticle of Fe^{+3} ion present in Fe_{0.93 O_{1.00 } will be Ooo oOO
Answer» mass percenticle of Fe^{+3} ion present in Fe_{0.93 O_{1.00 } will be Ooo oOO

Discussion

21.	For given graph (showing variation of photo current with respect to anode potential)If f1,f2 and f3 are the frequencies of incident radiations. Then, which of the following is true.
Answer» For given graph (showing variation of photo current with respect to anode potential) If $f_{1}, f_{2} and f_{3}$ are the frequencies of incident radiations. Then, which of the following is true.

Discussion

22.	The total number of benzene derivatives having the molecular formula C_7H_7Cl is:
Answer» The total number of benzene derivatives having the molecular formula C_7H_7Cl is:

Discussion

23.	Find The pH of a solution obtained by mixing 100mL of 0.2M CH3COOH is with 100mL of 0.2M NaOH if pKa for CH3COOH = 4.74
Answer» Find The pH of a solution obtained by mixing 100mL of 0.2M CH3COOH is with 100mL of 0.2M NaOH if pKa for CH3COOH = 4.74

Discussion

24.	Total number of nucleons present in 18ml of water is 1) 10 NA 2) 100 NA 3) 18NA 4) 4 NA
Answer» Total number of nucleons present in 18ml of water is 1) 10 NA 2) 100 NA 3) 18NA 4) 4 NA

Discussion

25.	How does C have +2 Oxidation state in HNC?
Answer» How does C have +2 Oxidation state in HNC?

Discussion

26.	Explain, why Iron Corbonyl Fe(CO)5 is Mononuclear
Answer» Explain, why Iron Corbonyl Fe(CO)5 is Mononuclear

Discussion

27.	Consider the following compounds: Choose the correct statement(s) from the following.
Answer» Consider the following compounds: Choose the correct statement(s) from the following.

Discussion

28.	The oxide that is neutral among the following is
Answer» The oxide that is neutral among the following is

Discussion

29.	2.How many minimum carbon is required for ring chain isomerism
Answer» 2.How many minimum carbon is required for ring chain isomerism

Discussion

30.	39. Aldol condensation of Ch3-C(CH3)=CH-C(CH3)=O
Answer» 39. Aldol condensation of Ch3-C(CH3)=CH-C(CH3)=O

Discussion

31.	If A' union B=U then show that A A belong to B.
Answer» If A' union B=U then show that A A belong to B.

Discussion

32.	The correct ground state configuration of copper atom is:
Answer» The correct ground state configuration of copper atom is:

Discussion

33.	Select the correct I.U.P.A.C. name from following:
Answer» Select the correct I.U.P.A.C. name from following:

Discussion

34.	what is oxidation reduction?
Answer» what is oxidation reduction?

Discussion

35.	How many isomers of C8H10 when reacted with hot alkaline KMnO4 gives a di-carboxylic acid as the product?
Answer» How many isomers of $C_{8} H_{10}$ when reacted with hot alkaline $K M n O_{4}$ gives a di-carboxylic acid as the product?

Discussion

36.	How to derive electric field due to uniformly charged disc
Answer» How to derive electric field due to uniformly charged disc

Discussion

37.

Match List - I with List II and select the correct answer using the code given below the lists. List -IList -IIA. Meso compounds1. An equimolar mixture of enantiomerB. Enantiomers2. Stereoisomers that are not mirror imagesC. Diastereoisomers3. Non superimposable mirror imagesD. Racemic mixture4. An optically inactive compound whose molecules are achiral even though they contain chiral centre

Answer»

Match List - I with List II and select the correct answer using the code given below the lists.

List -I	List -II
A. Meso compounds	1. An equimolar mixture of enantiomer
B. Enantiomers	2. Stereoisomers that are not mirror images
C. Diastereoisomers	3. Non superimposable mirror images
D. Racemic mixture	4. An optically inactive compound whose molecules are achiral even though they contain chiral centre

Discussion

38.	896 ml of a mix of co and co2 weighs 1.28 g . Find volume of both co and co2 in the mixture.
Answer» 896 ml of a mix of co and co2 weighs 1.28 g . Find volume of both co and co2 in the mixture.

Discussion

39.	the ionic radii of A+ and B- ions are 0.98 x 10^-10 m and 1.81 x 10^-10 m. The coordination number of each ion in AB2 is where AB2 is having fluorite structure
Answer» the ionic radii of A+ and B- ions are 0.98 x 10^-10 m and 1.81 x 10^-10 m. The coordination number of each ion in AB2 is where AB2 is having fluorite structure

Discussion

40.	10. What is a semiconductor?
Answer» 10. What is a semiconductor?

Discussion

41.	ntIn the reaction point out what will be the final product Bn ntPropene+ Cl2 /500 degree Celsius -----}A + Na and dry ether-------} B.n
Answer» ntIn the reaction point out what will be the final product Bn ntPropene+ Cl2 /500 degree Celsius -----}A + Na and dry ether-------} B.n

Discussion

42.	An electron is accelerated from rest through a potential difference of 12.27 V. The de Broglie wavelength of the electron is
Answer» An electron is accelerated from rest through a potential difference of $12.27 V$ . The de Broglie wavelength of the electron is

Discussion

43.	Lewis acid
Answer» Lewis acid

Discussion

44.	74.Number of oxygen atoms present in 100 mg of CaCO3 is
Answer» 74.Number of oxygen atoms present in 100 mg of CaCO3 is

Discussion

45.	find the ratio of the area of orbit of first excited state of electron to the area of orbit of ground level for hydrogen atom.
Answer» find the ratio of the area of orbit of first excited state of electron to the area of orbit of ground level for hydrogen atom.

Discussion

46.	Depression of freezing point of 0.01 molal aqueous CH3COOH Solution is 0.204^°C. 1 molal urea freezes at -1.86^°C. Assuming molarity equal to molality,pH of CH3COOH solution is
Answer» Depression of freezing point of 0.01 molal aqueous CH3COOH Solution is 0.204^°C. 1 molal urea freezes at -1.86^°C. Assuming molarity equal to molality,pH of CH3COOH solution is

Discussion

47.	E^° values of Mg2+\vert Mg, Zn2+IZn and Fe2\ast\vert Fe are-2.37 V,-0.76 V and-0.44 V respectively. Whichof the following is correct?(1) Mg2+ oxidises Fe (2) Zn oxidises Fe2\ast(3) Zn reduces Mg2+(4) Zn reduces Fe2+
Answer» E^° values of Mg2+\vert Mg, Zn2+IZn and Fe2\ast\vert Fe are-2.37 V,-0.76 V and-0.44 V respectively. Whichof the following is correct?(1) Mg2+ oxidises Fe (2) Zn oxidises Fe2\ast(3) Zn reduces Mg2+(4) Zn reduces Fe2+

Discussion

48.	Which of the following is an example of liquid dishwashing detergent?
Answer» Which of the following is an example of liquid dishwashing detergent?

Discussion

49.	Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F2 and Cl2.
Answer» Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F₂ and Cl₂.

Discussion

50.	The wavelength of Hα line of the Paschen series is 6500 oA. The wavelength of the Hβ line of Paschen series is:
Answer» The wavelength of $H_{α}$ line of the Paschen series is $6500 o A$ . The wavelength of the $H_{β}$ line of Paschen series is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The volume of Cl2 at STP react with 1 gm Fe to produce FeCl3 will be

Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe

why rusting is a redox reaction?

58.One c.c of phosphoric acid was diluted to 250 cc; 25cc of this solution required 34. 8 CC of 0. 102N NaoH for neutralization, using phenolphthalein as indicator. What is the specific gravity of the acid?

NaOH + PbO = x + H2ONaOH + SnO2 = y + H2ONaOH + H2O + Al = z + H2 Sum of number of atom present in one molecule each of x,y,z isa) 5b) 10c) 11d) 15

1 mole of NH3 gas at 27∘C is expanded in reversible adiabatic condition to make its volume 8 times (γ=1.33). Final temperature and magnitude of work done respectively are:

The species Ar,K+ and Ca2+ contain the same number of electrons. In which order do their radii increase?

If an object weighs 90N on the surface of the earth . Then find the height at which it will weigh 40N ?? (The radius of the earth is R ). a) R/2 b) root 2 X R

In how many equal parts will a 45⁰-90⁰-45⁰ set square divide a circle into, keeping the vertex of 45⁰ at the centre of the circle, and repeatedly rotating the set square by that angle along the whole circle?

The compound(s) formed upon combustion of sodium metal in excess air is(are)

The frequency of 1st line of Balmer series in H- atom is ν0. If the frequency of the same line emitted by singly ionized He atom is xν0, then x is

Which of the following are correct names according to IUPAC rules?

calculate the partial pressure of CO from the following data

When more than ten amino acids react, then the product formed is called:

what is homo polymer?

Is the kohlrausch law same for both weak and strong electrolyte?

among the following the most reactive towards alc KOH is 1)CH2=CHBr 2)Ch3CoCh2CH2Br (3)Ch3Ch2Br (4)CH3CH2Ch2B

C6H5N+2Cl−H3PO2−−−−→H2OX+N2↑+HCl+H3PO3The compound X is :

mass percenticle of Fe^{+3} ion present in Fe_{0.93 O_{1.00 } will be Ooo oOO

For given graph (showing variation of photo current with respect to anode potential)If f1,f2 and f3 are the frequencies of incident radiations. Then, which of the following is true.

The total number of benzene derivatives having the molecular formula C_7H_7Cl is:

Find The pH of a solution obtained by mixing 100mL of 0.2M CH3COOH is with 100mL of 0.2M NaOH if pKa for CH3COOH = 4.74

Total number of nucleons present in 18ml of water is 1) 10 NA 2) 100 NA 3) 18NA 4) 4 NA

How does C have +2 Oxidation state in HNC?

Explain, why Iron Corbonyl Fe(CO)5 is Mononuclear

Consider the following compounds: Choose the correct statement(s) from the following.

The oxide that is neutral among the following is

2.How many minimum carbon is required for ring chain isomerism

39. Aldol condensation of Ch3-C(CH3)=CH-C(CH3)=O

If A' union B=U then show that A A belong to B.

The correct ground state configuration of copper atom is:

Select the correct I.U.P.A.C. name from following:

what is oxidation reduction?

How many isomers of C8H10 when reacted with hot alkaline KMnO4 gives a di-carboxylic acid as the product?

How to derive electric field due to uniformly charged disc

896 ml of a mix of co and co2 weighs 1.28 g . Find volume of both co and co2 in the mixture.

the ionic radii of A+ and B- ions are 0.98 x 10^-10 m and 1.81 x 10^-10 m. The coordination number of each ion in AB2 is where AB2 is having fluorite structure

10. What is a semiconductor?

ntIn the reaction point out what will be the final product Bn ntPropene+ Cl2 /500 degree Celsius -----}A + Na and dry ether-------} B.n

An electron is accelerated from rest through a potential difference of 12.27 V. The de Broglie wavelength of the electron is

Lewis acid

74.Number of oxygen atoms present in 100 mg of CaCO3 is

find the ratio of the area of orbit of first excited state of electron to the area of orbit of ground level for hydrogen atom.

Depression of freezing point of 0.01 molal aqueous CH3COOH Solution is 0.204^°C. 1 molal urea freezes at -1.86^°C. Assuming molarity equal to molality,pH of CH3COOH solution is

E^° values of Mg2+\vert Mg, Zn2+IZn and Fe2\ast\vert Fe are-2.37 V,-0.76 V and-0.44 V respectively. Whichof the following is correct?(1) Mg2+ oxidises Fe (2) Zn oxidises Fe2\ast(3) Zn reduces Mg2+(4) Zn reduces Fe2+

Which of the following is an example of liquid dishwashing detergent?

Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F2 and Cl2.

The wavelength of Hα line of the Paschen series is 6500 oA. The wavelength of the Hβ line of Paschen series is: