46295 + Interview Questions in Chemistry

1.	Biuret test is not given by:
Answer» Biuret test is not given by:

Discussion

2.	From the following which is the least conducting in solution
Answer» From the following which is the least conducting in solution

Discussion

3.	Calculate the uncertainty in the position (Δx) of an electron if Δv is 0.1%. Take the velocity of electron =2.2×106 ms−1 and mass of electron as 9.108×10−31kg.
Answer» Calculate the uncertainty in the position ( $Δ x)$ of an electron if $Δ v i s 0.1 %$ . Take the velocity of electron $= 2.2 \times 10^{6} m s^{- 1}$ and mass of electron as $9.108 \times 10^{- 31} k g$ .

Discussion

4.	How to name elements more than the atomic number 100
Answer» How to name elements more than the atomic number 100

Discussion

5.	A is- (also provide the name and mechanism of reaction)
Answer» A is- (also provide the name and mechanism of reaction)

Discussion

6.	Phenol dissociates in benzene to certain extent to form a dimer .a solution containing 20g of phenol in 1 kg of benzene has its freezing point lowered by 0.69K .calculate the fraction of phenol that has dimerized (kf for benzene is 5.1K kg mol)
Answer» Phenol dissociates in benzene to certain extent to form a dimer .a solution containing 20g of phenol in 1 kg of benzene has its freezing point lowered by 0.69K .calculate the fraction of phenol that has dimerized (kf for benzene is 5.1K kg mol)

Discussion

7.	Lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100^°C is ( Assume solute neither dissociate nor associate )
Answer» Lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100^°C is ( Assume solute neither dissociate nor associate )

Discussion

8.	Boiling point of a liquid is 50K at 1 atm and delta Hvap = 460.6 cal/mol . What will be its boiling point at 10 atm ? (R = 2cal/K mol)
Answer» Boiling point of a liquid is 50K at 1 atm and delta Hvap = 460.6 cal/mol . What will be its boiling point at 10 atm ? (R = 2cal/K mol)

Discussion

9.	Which element contains a non-spherical electron density?
Answer» Which element contains a non-spherical electron density?

Discussion

10.	Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?
Answer» Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?

Discussion

11.	five molecules of a gas have speed 1,1,3,3,2 km/s the value of the rms speed of the gas molecule is
Answer» five molecules of a gas have speed 1,1,3,3,2 km/s the value of the rms speed of the gas molecule is

Discussion

12.	Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?
Answer» Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?

Discussion

13.	the mean free path of a moleucle of He gas is alpha its mean free path along any arbitary coordinate axis will b
Answer» the mean free path of a moleucle of He gas is alpha its mean free path along any arbitary coordinate axis will b

Discussion

14.	Which of the following is not correct for a gas undergoing isothermal expansion?
Answer» Which of the following is not correct for a gas undergoing isothermal expansion?

Discussion

15.	CH3−CH2−CH=CH−CH2−CH3 What is the IUPAC name of the following compound?
Answer» $C H_{3} - C H_{2} - C H = C H - C H_{2} - C H_{3}$ What is the IUPAC name of the following compound?

Discussion

16.	A 0.1 M basic soln. is required from Ca(OH)2 which is 40% ionised . Analytical molarity of Ca(OH)2 should be ?
Answer» A 0.1 M basic soln. is required from Ca(OH)2 which is 40% ionised . Analytical molarity of Ca(OH)2 should be ?

Discussion

17.	the ksp of AgCrO4 is 1.1 ×10^-12 at 298K. the solubility of Ag2CrO4 in a 0.1 M AgNO3 solution is?
Answer» the ksp of AgCrO4 is 1.1 ×10^-12 at 298K. the solubility of Ag2CrO4 in a 0.1 M AgNO3 solution is?

Discussion

18.	IUPAC name of Na3[Co(NO2)6] is
Answer» IUPAC name of $N a_{3} [C o (N O_{2})_{6}]$ is

Discussion

19.	Le drapeau français est ___________1. orange, blanc, vert2. vert, blanc, rouge3. bleu, blanc, rouge
Answer» Le drapeau français est ___________ 1. orange, blanc, vert 2. vert, blanc, rouge 3. bleu, blanc, rouge

Discussion

20.	4. Which among the following is strongest lewis base: NH_2^- F^- CH_3^- OH^-
Answer» 4. Which among the following is strongest lewis base: NH_2^- F^- CH_3^- OH^-

Discussion

21.	ntQ.2. In a zero order reaction, 20% of the reaction complete in 10 s. How much time will it take to complete 50% of the reaction?n
Answer» ntQ.2. In a zero order reaction, 20% of the reaction complete in 10 s. How much time will it take to complete 50% of the reaction?n

Discussion

22.	The major product of the following raction is :
Answer» The major product of the following raction is :

Discussion

23.	The only incorrect statement for the value of γ for NH3 gas is:(Assume ideal gas behaviour) a. γ = 7/5 at moderate temperature b. γ = 5/3 at very low temperature c. γ = 10/9 at very high temperature d. γ= 7/6 considering only 50% contributionof vibrational energ
Answer» The only incorrect statement for the value of γ for NH3 gas is:(Assume ideal gas behaviour) a. γ = 7/5 at moderate temperature b. γ = 5/3 at very low temperature c. γ = 10/9 at very high temperature d. γ= 7/6 considering only 50% contributionof vibrational energ

Discussion

24.	Which one of the following has the highest bond angle?
Answer» Which one of the following has the highest bond angle?

Discussion

25.	59. Clo2 is paramagnetic. How??
Answer» 59. Clo2 is paramagnetic. How??

Discussion

26.	The rate of steady volume flow of water through a capillary tube of length l and radius r, under a pressure difference of P is V. This tube is connected with another tube of the same length but half the radius, in series. Then the rate of steady volume flow through them is:(The pressure difference across the combination is P.) A) V/16 B) V/17 C)16V/17 D)17V/16
Answer» The rate of steady volume flow of water through a capillary tube of length l and radius r, under a pressure difference of P is V. This tube is connected with another tube of the same length but half the radius, in series. Then the rate of steady volume flow through them is:(The pressure difference across the combination is P.) A) V/16 B) V/17 C)16V/17 D)17V/16

Discussion

27.	21.Why oxygen molecule is paramagnatic
Answer» 21.Why oxygen molecule is paramagnatic

Discussion

28.	72. The mass of FeSO_4 required to oxidise but 50ml of 0.2M KMnO_4 solution in the acidic medium is ??
Answer» 72. The mass of FeSO_4 required to oxidise but 50ml of 0.2M KMnO_4 solution in the acidic medium is ??

Discussion

29.	1kg of graphite is burnt in a closed vessel . In an another experiment same amount of graphite is in an open vessel . Will the heat evolved on two cases be same or different , how?
Answer» 1kg of graphite is burnt in a closed vessel . In an another experiment same amount of graphite is in an open vessel . Will the heat evolved on two cases be same or different , how?

Discussion

30.	Which of the following species has the electronic configuration [Ar]3d5?
Answer» Which of the following species has the electronic configuration $[A r] 3 d^{5}$ ?

Discussion

31.	Mark the correct order of decreasing acid strength of the following compounds.
Answer» Mark the correct order of decreasing acid strength of the following compounds.

Discussion

32.	Chlorine reacts with hot and conc. NaOH and produces compounds (X) and (Y). Compound (X) gives white precipitate with AgNO3 solution. The average bond order between Cl and O atoms in (Y) is
Answer» Chlorine reacts with hot and conc. $N a O H$ and produces compounds (X) and (Y). Compound (X) gives white precipitate with $A g N O_{3}$ solution. The average bond order between $C l$ and $O$ atoms in (Y) is

Discussion

33.	63. Explanation of oxide ion, peroxide ion and super oxide ion
Answer» 63. Explanation of oxide ion, peroxide ion and super oxide ion

Discussion

34.	Q1) What is the hybridisation of central metal ion in \lbrack Fe(CO)4\rbrack-2
Answer» Q1) What is the hybridisation of central metal ion in \lbrack Fe(CO)4\rbrack-2

Discussion

35.	a capillary tube of radius R is immersed vertically in a liquid such that liquid rises in it to a height h( less than the length of the tube) mass of a liquid rises in the capillary tube is M if the radius of the tube is decreased by 50% then the mass of the liquid that will rise in the tube is
Answer» a capillary tube of radius R is immersed vertically in a liquid such that liquid rises in it to a height h( less than the length of the tube) mass of a liquid rises in the capillary tube is M if the radius of the tube is decreased by 50% then the mass of the liquid that will rise in the tube is

Discussion

36.	Two oxides of Metal contain 27.6% and 30 % oxygen respectively. If the formula of first oxide is M,Othen tormula of second oxide isc10.(C) MO3(B) M,O(D) MO(A) MO
Answer» Two oxides of Metal contain 27.6% and 30 % oxygen respectively. If the formula of first oxide is M,Othen tormula of second oxide isc10.(C) MO3(B) M,O(D) MO(A) MO

Discussion

37.	PH of certain solution is changed from 8 to 11.what is the change in hydroxyl ions of the solution
Answer» PH of certain solution is changed from 8 to 11.what is the change in hydroxyl ions of the solution

Discussion

38.	6. Which among the solutions given below will not show a change in pH on dilution? (I). 0.1 M NH4COOCH3, (II). 0.1 M NaCl, (III). 0.1 M NH4OH, (IV). 0.01 M H2SO4. A. I and II. B. I, II and IV. C. I and III. D. III and IV.
Answer» 6. Which among the solutions given below will not show a change in pH on dilution? (I). 0.1 M NH4COOCH3, (II). 0.1 M NaCl, (III). 0.1 M NH4OH, (IV). 0.01 M H2SO4. A. I and II. B. I, II and IV. C. I and III. D. III and IV.

Discussion

39.	In the extraction of Iron, the function of limestone is:
Answer» In the extraction of Iron, the function of limestone is:

Discussion

40.	A metal forms two oxides. The higher oxide contains 80% metal. 0. 72g of the lower oxide gave 0. 8g of higher oxide when oxidised. Then the ratio of the weight of oxygen that combines with the fixed weight of the metal in the two oxides will be.
Answer» A metal forms two oxides. The higher oxide contains 80% metal. 0. 72g of the lower oxide gave 0. 8g of higher oxide when oxidised. Then the ratio of the weight of oxygen that combines with the fixed weight of the metal in the two oxides will be.

Discussion

41.	Heating an aqueous solution of aluminium chloride to dryness will give
Answer» Heating an aqueous solution of aluminium chloride to dryness will give

Discussion

42.	The measurements of the diameters (in mm) of the heads of 107 screws are given below Diameter (in mm)33−3536−3839−4142−4445−47Number of screws1719232127 Calculate the mean and the standard deviation.
Answer» The measurements of the diameters (in mm) of the heads of 107 screws are given below $\begin{matrix} Diameter (in mm) & 33 - 35 & 36 - 38 & 39 - 41 & 42 - 44 & 45 - 47 Number of screws & 17 & 19 & 23 & 21 & 27 \end{matrix}$ Calculate the mean and the standard deviation.

42.

The measurements of the diameters (in mm) of the heads of 107 screws are given below Diameter (in mm)33−3536−3839−4142−4445−47Number of screws1719232127 Calculate the mean and the standard deviation.

Answer»

The measurements of the diameters (in mm) of the heads of 107 screws are given below

$\begin{matrix} Diameter (in mm) & 33 - 35 & 36 - 38 & 39 - 41 & 42 - 44 & 45 - 47 Number of screws & 17 & 19 & 23 & 21 & 27 \end{matrix}$

Calculate the mean and the standard deviation.

Discussion

43.	49. Which of the following form peroxide A)Bao2 B)Ko2 C)Mno2 D)No2 1)324 2)400 3)373 4)1024
Answer» 49. Which of the following form peroxide A)Bao2 B)Ko2 C)Mno2 D)No2 1)324 2)400 3)373 4)1024

Discussion

44.	Whyis sulphuric acid not used during the reaction of alcohols with KI?
Answer» Why is sulphuric acid not used during the reaction of alcohols with KI?

Discussion

45.	the possible structural isomers of c5h10 which do not decolourise bromine water
Answer» the possible structural isomers of c5h10 which do not decolourise bromine water

Discussion

46.	Sequence of which of the following is used to determine the phylogeny?
Answer» Sequence of which of the following is used to determine the phylogeny?

Discussion

47.	1. An electric current is passed to Silver voltameter connect to a water voltmeter the cathode of the Silver voltameter weight .108 grams more at the end of the electrolysis the volume of oxygen evolved at STP is 1)56 2)550 3)5.6 4)11.2 5)22.4
Answer» 1. An electric current is passed to Silver voltameter connect to a water voltmeter the cathode of the Silver voltameter weight .108 grams more at the end of the electrolysis the volume of oxygen evolved at STP is 1)56 2)550 3)5.6 4)11.2 5)22.4

Discussion

48.	40.Which is small proton or neutron?
Answer» 40.Which is small proton or neutron?

Discussion

49.	The ratio of close packed atoms to tetrahedral holes in cubic close packing is
Answer» The ratio of close packed atoms to tetrahedral holes in cubic close packing is

Discussion

50.	In neutral medium, KMnO4 acts as a powerful oxidizing agent according to the reaction: 2KMnO4+H2O→2MnO2+2KOH+3(O). The change involves
Answer» In neutral medium, $K M n O_{4}$ acts as a powerful oxidizing agent according to the reaction: $2 K M n O_{4} + H_{2} O \to 2 M n O_{2} + 2 K O H + 3 (O)$ . The change involves

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Biuret test is not given by:

From the following which is the least conducting in solution

Calculate the uncertainty in the position (Δx) of an electron if Δv is 0.1%. Take the velocity of electron =2.2×106 ms−1 and mass of electron as 9.108×10−31kg.

How to name elements more than the atomic number 100

A is- (also provide the name and mechanism of reaction)

Phenol dissociates in benzene to certain extent to form a dimer .a solution containing 20g of phenol in 1 kg of benzene has its freezing point lowered by 0.69K .calculate the fraction of phenol that has dimerized (kf for benzene is 5.1K kg mol)

Lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100^°C is ( Assume solute neither dissociate nor associate )

Boiling point of a liquid is 50K at 1 atm and delta Hvap = 460.6 cal/mol . What will be its boiling point at 10 atm ? (R = 2cal/K mol)

Which element contains a non-spherical electron density?

Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?

five molecules of a gas have speed 1,1,3,3,2 km/s the value of the rms speed of the gas molecule is

Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?

the mean free path of a moleucle of He gas is alpha its mean free path along any arbitary coordinate axis will b

Which of the following is not correct for a gas undergoing isothermal expansion?

CH3−CH2−CH=CH−CH2−CH3 What is the IUPAC name of the following compound?

A 0.1 M basic soln. is required from Ca(OH)2 which is 40% ionised . Analytical molarity of Ca(OH)2 should be ?

the ksp of AgCrO4 is 1.1 ×10^-12 at 298K. the solubility of Ag2CrO4 in a 0.1 M AgNO3 solution is?

IUPAC name of Na3[Co(NO2)6] is

Le drapeau français est ___________1. orange, blanc, vert2. vert, blanc, rouge3. bleu, blanc, rouge

4. Which among the following is strongest lewis base: NH_2^- F^- CH_3^- OH^-

ntQ.2. In a zero order reaction, 20% of the reaction complete in 10 s. How much time will it take to complete 50% of the reaction?n

The major product of the following raction is :

The only incorrect statement for the value of γ for NH3 gas is:(Assume ideal gas behaviour) a. γ = 7/5 at moderate temperature b. γ = 5/3 at very low temperature c. γ = 10/9 at very high temperature d. γ= 7/6 considering only 50% contributionof vibrational energ

Which one of the following has the highest bond angle?

59. Clo2 is paramagnetic. How??

21.Why oxygen molecule is paramagnatic

72. The mass of FeSO_4 required to oxidise but 50ml of 0.2M KMnO_4 solution in the acidic medium is ??

1kg of graphite is burnt in a closed vessel . In an another experiment same amount of graphite is in an open vessel . Will the heat evolved on two cases be same or different , how?

Which of the following species has the electronic configuration [Ar]3d5?

Mark the correct order of decreasing acid strength of the following compounds.

Chlorine reacts with hot and conc. NaOH and produces compounds (X) and (Y). Compound (X) gives white precipitate with AgNO3 solution. The average bond order between Cl and O atoms in (Y) is

63. Explanation of oxide ion, peroxide ion and super oxide ion

Q1) What is the hybridisation of central metal ion in \lbrack Fe(CO)4\rbrack-2

a capillary tube of radius R is immersed vertically in a liquid such that liquid rises in it to a height h( less than the length of the tube) mass of a liquid rises in the capillary tube is M if the radius of the tube is decreased by 50% then the mass of the liquid that will rise in the tube is

Two oxides of Metal contain 27.6% and 30 % oxygen respectively. If the formula of first oxide is M,Othen tormula of second oxide isc10.(C) MO3(B) M,O(D) MO(A) MO

PH of certain solution is changed from 8 to 11.what is the change in hydroxyl ions of the solution

6. Which among the solutions given below will not show a change in pH on dilution? (I). 0.1 M NH4COOCH3, (II). 0.1 M NaCl, (III). 0.1 M NH4OH, (IV). 0.01 M H2SO4. A. I and II. B. I, II and IV. C. I and III. D. III and IV.

In the extraction of Iron, the function of limestone is:

A metal forms two oxides. The higher oxide contains 80% metal. 0. 72g of the lower oxide gave 0. 8g of higher oxide when oxidised. Then the ratio of the weight of oxygen that combines with the fixed weight of the metal in the two oxides will be.

Heating an aqueous solution of aluminium chloride to dryness will give

The measurements of the diameters (in mm) of the heads of 107 screws are given below Diameter (in mm)33−3536−3839−4142−4445−47Number of screws1719232127 Calculate the mean and the standard deviation.

49. Which of the following form peroxide A)Bao2 B)Ko2 C)Mno2 D)No2 1)324 2)400 3)373 4)1024

Whyis sulphuric acid not used during the reaction of alcohols with KI?

the possible structural isomers of c5h10 which do not decolourise bromine water

Sequence of which of the following is used to determine the phylogeny?

1. An electric current is passed to Silver voltameter connect to a water voltmeter the cathode of the Silver voltameter weight .108 grams more at the end of the electrolysis the volume of oxygen evolved at STP is 1)56 2)550 3)5.6 4)11.2 5)22.4

40.Which is small proton or neutron?

The ratio of close packed atoms to tetrahedral holes in cubic close packing is

In neutral medium, KMnO4 acts as a powerful oxidizing agent according to the reaction: 2KMnO4+H2O→2MnO2+2KOH+3(O). The change involves