46295 + Interview Questions in Chemistry

1.	Choose the various types of thermometers.
Answer» Choose the various types of thermometers.

Discussion

2.	0.2(M) solution of monobasic acid is dissociated to 0.95% calculate its dissociation constant. C = 0.2 M
Answer» 0.2(M) solution of monobasic acid is dissociated to $0.95 %$ calculate its dissociation constant. C = 0.2 M

Discussion

3.	draw following resonating structure (1)no3- (2)co3-(3)clo3-
Answer» draw following resonating structure (1)no3- (2)co3-(3)clo3-

Discussion

4.	8. A mixture of N2 and H2is caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2 moles each of N2,H2,and NH3 are present. Then the weight of N2 And H2 present originally were respectively
Answer» 8. A mixture of N2 and H2is caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2 moles each of N2,H2,and NH3 are present. Then the weight of N2 And H2 present originally were respectively

Discussion

5.	According to Le-chatelier principle, if heat is given to solid-liquid system, then
Answer» According to Le-chatelier principle, if heat is given to solid-liquid system, then

5.

According to Le-chatelier principle, if heat is given to solid-liquid system, then

Answer»

According to Le-chatelier principle, if heat is given to solid-liquid system,

then

Discussion

6.	The reaction of compound P with CH3MgBr(excess) in (C2H5)2O followed by addition of H2O gives Q. The compound Q on treatment with H2SO4 at 0∘C gives R. The reaction of R with CH3COCl in the presence of anhydrous AlCl3 in CH2Cl2 followed by treatment with H2O produces compound S [Et in compound P is ethyl group]The product S is:
Answer» The reaction of compound P with $C H_{3} M g B r$ (excess) in $(C_{2} H_{5})_{2} O$ followed by addition of $H_{2} O$ gives Q. The compound Q on treatment with $H_{2} S O_{4}$ at $0^{\circ} C$ gives R. The reaction of R with $C H_{3} C O C l$ in the presence of anhydrous $A l C l_{3}$ in $C H_{2} C l_{2}$ followed by treatment with $H_{2} O$ produces compound S [Et in compound P is ethyl group] The product S is:

Discussion

7.	Butyric acid contains only Carbon, Hydrogen and Oxygen. A 4.24 mg sample of butyric acid is completely burnt. It gives 8.45 mg of Carbon dioxide and 3.46 mg of H2O . What is the Mass percentage of each element in butyric acid? The molecular Mass of butyric acid was determined by the experiment to be 88u. What is the molecular formula.
Answer» Butyric acid contains only Carbon, Hydrogen and Oxygen. A 4.24 mg sample of butyric acid is completely burnt. It gives 8.45 mg of Carbon dioxide and 3.46 mg of H2O . What is the Mass percentage of each element in butyric acid? The molecular Mass of butyric acid was determined by the experiment to be 88u. What is the molecular formula.

Discussion

8.	66 What is the volume of 10 volume H2O2 solution required to react completely with 100 ml of 1 N KMnO4 solution? 1.224 ml. 2.448 ml. 3.56ml. 4.112ml.
Answer» 66 What is the volume of 10 volume H2O2 solution required to react completely with 100 ml of 1 N KMnO4 solution? 1.224 ml. 2.448 ml. 3.56ml. 4.112ml.

Discussion

9.	for a first order reaction A→ products, mthe rate of reaction at \lbrack A\rbrack =0.2M is 1×10^{-2} mol lit^{-1} min^{-1} The half life period for the reaction is
Answer» for a first order reaction A→ products, mthe rate of reaction at \lbrack A\rbrack =0.2M is 1×10^{-2} mol lit^{-1} min^{-1} The half life period for the reaction is

Discussion

10.	A faulty barometer reads 71.12cm and 76.20cm when a true barometer reads 72.39cm and 78.74cm, respectively. Find the ture reading when the faulty barometer stands at 73.66cm.
Answer» A faulty barometer reads 71.12cm and 76.20cm when a true barometer reads 72.39cm and 78.74cm, respectively. Find the ture reading when the faulty barometer stands at 73.66cm.

Discussion

11.	How many molecules of O2 are present in 1 L air containing 80% volume of O2 at STP?
Answer» How many molecules of O2 are present in 1 L air containing 80% volume of O2 at STP?

Discussion

12.	what is electovalent bond or ionic bond?
Answer» what is electovalent bond or ionic bond?

Discussion

13.	5 moles of a mixture of FeSO4 and Fe2(SO4)3 required 150 mL of 1.0 M KMnO4 in acidic medium for the complete neutralisation. Calculate the mole fraction of FeSO4 in the initial mixture.
Answer» $5$ moles of a mixture of $F e S O_{4}$ and $F e_{2} (S O_{4})_{3}$ required $150 m L$ of $1.0 M K M n O_{4}$ in acidic medium for the complete neutralisation. Calculate the mole fraction of $F e S O_{4}$ in the initial mixture.

Discussion

14.	what is oxidation state of manganese in potassium permagnate
Answer» what is oxidation state of manganese in potassium permagnate

Discussion

15.	The number of moles of KMnO4 required, to react with 2 moles of ferrous oxalate is:
Answer» The number of moles of $K M n O_{4}$ required, to react with 2 moles of ferrous oxalate is:

Discussion

16.	19. When we put ISO while naming any carbon chane like iso butane etc
Answer» 19. When we put ISO while naming any carbon chane like iso butane etc

Discussion

17.	1.The largest size of the ion is A)Cl- B)CA++ C)K+ D)S--
Answer» 1.The largest size of the ion is A)Cl- B)CA++ C)K+ D)S--

Discussion

18.	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

19.	The structure of BF3 is
Answer» The structure of BF $_{3}$ is

Discussion

20.	Comment on each of the following observations:(a) The mobilities of the alkali metal ions inaqueous solution are Li+< Na+< K+ <Rb+ <Cs+(b) Lithium is the onlyalkali metal to form a nitride directly.(c) (where M = Ca, Sr or Ba) is nearly constant.
Answer» Comment on each of the following observations: (a) The mobilities of the alkali metal ions in aqueous solution are Li⁺ < Na⁺ < K⁺< Rb⁺ < Cs⁺ (b) Lithium is the only alkali metal to form a nitride directly. (c) (where M = Ca, Sr or Ba) is nearly constant.

20.

Comment on each of the following observations:(a) The mobilities of the alkali metal ions inaqueous solution are Li+< Na+< K+ <Rb+ <Cs+(b) Lithium is the onlyalkali metal to form a nitride directly.(c) (where M = Ca, Sr or Ba) is nearly constant.

Answer»

Comment on each of the following observations:

(a) The mobilities of the alkali metal ions in
aqueous solution are Li⁺
< Na⁺
< K⁺<
Rb⁺ <
Cs⁺

(b) Lithium is the only
alkali metal to form a nitride directly.

(c)
(where M = Ca, Sr or Ba) is nearly constant.

Discussion

21.	What is century plant?
Answer» What is century plant?

Discussion

22.	An exothermic chemical process occurs in two steps as follows:(i) A+B→X (slow)(ii) X→AB (fast)The energy profile diagram that best suits this process is:
Answer» An exothermic chemical process occurs in two steps as follows: (i) $A + B \to X$ (slow) (ii) $X \to A B$ (fast) The energy profile diagram that best suits this process is:

Discussion

23.	CaC2H2O−−→AH+−−−→Hg2+[B]→C. If 'B' is an unstable compund. The relation between 'B' and 'C' is
Answer» $C a C_{2} H_{2} O - - \to A H^{+} - -- \to H g^{2 +} [B] \to C$ . If 'B' is an unstable compund. The relation between 'B' and 'C' is

Discussion

24.	Difference between pricise and accuracy
Answer» Difference between pricise and accuracy

Discussion

25.	explain types of inductice effect and resonance effe
Answer» explain types of inductice effect and resonance effe

Discussion

26.	Which of the following orbitals has most energy in multi-electron system?
Answer» Which of the following orbitals has most energy in multi-electron system?

Discussion

27.	Amino group is ortho, para directing for aromatic electrophilic substitution. On nitration of aniline with concentrated acids, a good amount of meta nitro aniline is obtained. This is due to
Answer» Amino group is ortho, para directing for aromatic electrophilic substitution. On nitration of aniline with concentrated acids, a good amount of meta nitro aniline is obtained. This is due to

Discussion

28.	2. assuming complete dissociation which of the following aqueous solutions will have the same ph value as of 50 ml , 0.01M HCL ? 1 100 ml .0.01 M H2SO4 2 50 ml 0.01M H2PO4 3 100 ml 0.01M HCl 4 mix of 50 ml 0,005 M HCl and 50 ml 0.0 M H2SO4
Answer» 2. assuming complete dissociation which of the following aqueous solutions will have the same ph value as of 50 ml , 0.01M HCL ? 1 100 ml .0.01 M H2SO4 2 50 ml 0.01M H2PO4 3 100 ml 0.01M HCl 4 mix of 50 ml 0,005 M HCl and 50 ml 0.0 M H2SO4

Discussion

29.	cospA=cosqA ,p≠q ,then A=
Answer» cospA=cosqA ,p≠q ,then A=

Discussion

30.	Protein molecules, united with molecules other than proteins, are called.
Answer» Protein molecules, united with molecules other than proteins, are called.

Discussion

31.	Preparation of alcohol from grignard reagent
Answer» Preparation of alcohol from grignard reagent

Discussion

32.	What volume of 15V H2O2 required to react completely with 10 ml of 1 M KMnO4 in acidic medium? (1) 18.72 ml (2) 25.51 ml (3) 14.20 ml (4) 10.65 ml
Answer» What volume of 15V H2O2 required to react completely with 10 ml of 1 M KMnO4 in acidic medium? (1) 18.72 ml (2) 25.51 ml (3) 14.20 ml (4) 10.65 ml

Discussion

33.	What is acid and base?Explain in simple languag
Answer» What is acid and base?Explain in simple languag

Discussion

34.	Which one of the following is most reactive towards electrophilic substitution reaction?
Answer» Which one of the following is most reactive towards electrophilic substitution reaction?

Discussion

35.	21 Third ionisation energy for Li,Be,B,C
Answer» 21 Third ionisation energy for Li,Be,B,C

Discussion

36.	What happens when benzene diazonium chloride is treated with potassium cyanide in presence of Cu powder?
Answer» What happens when benzene diazonium chloride is treated with potassium cyanide in presence of Cu powder?

Discussion

37.	ntIn a experiment, 4g of M2Ox oxide was reduced to 2.8g of metal. If he atomic mass of the metal is 56g, the number of oxygen atoms in the oxide is?n
Answer» ntIn a experiment, 4g of M2Ox oxide was reduced to 2.8g of metal. If he atomic mass of the metal is 56g, the number of oxygen atoms in the oxide is?n

Discussion

38.	What mass of slaked lime would be required to decompose completely 4 grams of ammonium chloride and what would be the mass of each product ?
Answer» What mass of slaked lime would be required to decompose completely 4 grams of ammonium chloride and what would be the mass of each product ?

Discussion

39.	Q 2/30 The two bulbs of volume 5 litre and 10 litrecontaining an ideal gas at 9 atm and 6 atm respectively areconnected. What is the final pressure in the two bulbs if the temperature remains constant?
Answer» Q 2/30 The two bulbs of volume 5 litre and 10 litrecontaining an ideal gas at 9 atm and 6 atm respectively areconnected. What is the final pressure in the two bulbs if the temperature remains constant?

Discussion

40.	As per IUPAC rules, which one of the following groups will be regarded as the principal functional group?
Answer» As per IUPAC rules, which one of the following groups will be regarded as the principal functional group?

Discussion

41.	find the no. of isomers for Pd[(NH3)2(ONO)2]
Answer» find the no. of isomers for Pd[(NH3)2(ONO)2]

Discussion

42.	A balloon has 2 g of air. A small hole is pierced into it. The air comes out with a velocity of 4 m/s.If the balloon shrinks completely in 2.5 s. The average force acting on the balloon is
Answer» A balloon has 2 g of air. A small hole is pierced into it. The air comes out with a velocity of 4 m/s.If the balloon shrinks completely in 2.5 s. The average force acting on the balloon is

Discussion

43.	9. What is difference b/w amorphous and crystalline form?
Answer» 9. What is difference b/w amorphous and crystalline form?

Discussion

44.	Which of the following has maximum number unpaired electron (atoic number of Fe 24. options D) Fe (IV)C) Fe (II)B) Fe (II)A) Fe
Answer» Which of the following has maximum number unpaired electron (atoic number of Fe 24. options D) Fe (IV)C) Fe (II)B) Fe (II)A) Fe

Discussion

45.	The strongest hydrogen bonding is present in:
Answer» The strongest hydrogen bonding is present in:

Discussion

46.	Does rate constant depend upon catalyst?
Answer» Does rate constant depend upon catalyst?

Discussion

47.	what is electrostatic
Answer» what is electrostatic

Discussion

48.	How many defects in KCl of 7.45 g
Answer» How many defects in KCl of 7.45 g

Discussion

49.	What happens when metals react with water
Answer» What happens when metals react with water

Discussion

50.	Name the process from which we can separate grinded sugar and grinded salt which are mixed with each other?
Answer» Name the process from which we can separate grinded sugar and grinded salt which are mixed with each other?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Choose the various types of thermometers.

0.2(M) solution of monobasic acid is dissociated to 0.95% calculate its dissociation constant. C = 0.2 M

draw following resonating structure (1)no3- (2)co3-(3)clo3-

8. A mixture of N2 and H2is caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2 moles each of N2,H2,and NH3 are present. Then the weight of N2 And H2 present originally were respectively

According to Le-chatelier principle, if heat is given to solid-liquid system, then

66 What is the volume of 10 volume H2O2 solution required to react completely with 100 ml of 1 N KMnO4 solution? 1.224 ml. 2.448 ml. 3.56ml. 4.112ml.

for a first order reaction A→ products, mthe rate of reaction at \lbrack A\rbrack =0.2M is 1×10^{-2} mol lit^{-1} min^{-1} The half life period for the reaction is

A faulty barometer reads 71.12cm and 76.20cm when a true barometer reads 72.39cm and 78.74cm, respectively. Find the ture reading when the faulty barometer stands at 73.66cm.

How many molecules of O2 are present in 1 L air containing 80% volume of O2 at STP?

what is electovalent bond or ionic bond?

5 moles of a mixture of FeSO4 and Fe2(SO4)3 required 150 mL of 1.0 M KMnO4 in acidic medium for the complete neutralisation. Calculate the mole fraction of FeSO4 in the initial mixture.

what is oxidation state of manganese in potassium permagnate

The number of moles of KMnO4 required, to react with 2 moles of ferrous oxalate is:

19. When we put ISO while naming any carbon chane like iso butane etc

1.The largest size of the ion is A)Cl- B)CA++ C)K+ D)S--

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)

The structure of BF3 is

Comment on each of the following observations:(a) The mobilities of the alkali metal ions inaqueous solution are Li+&lt; Na+&lt; K+ &lt;Rb+ &lt;Cs+(b) Lithium is the onlyalkali metal to form a nitride directly.(c) (where M = Ca, Sr or Ba) is nearly constant.

What is century plant?

An exothermic chemical process occurs in two steps as follows:(i) A+B→X (slow)(ii) X→AB (fast)The energy profile diagram that best suits this process is:

CaC2H2O−−→AH+−−−→Hg2+[B]→C. If 'B' is an unstable compund. The relation between 'B' and 'C' is

Difference between pricise and accuracy

explain types of inductice effect and resonance effe

Which of the following orbitals has most energy in multi-electron system?

Amino group is ortho, para directing for aromatic electrophilic substitution. On nitration of aniline with concentrated acids, a good amount of meta nitro aniline is obtained. This is due to

2. assuming complete dissociation which of the following aqueous solutions will have the same ph value as of 50 ml , 0.01M HCL ? 1 100 ml .0.01 M H2SO4 2 50 ml 0.01M H2PO4 3 100 ml 0.01M HCl 4 mix of 50 ml 0,005 M HCl and 50 ml 0.0 M H2SO4

cospA=cosqA ,p≠q ,then A=

Protein molecules, united with molecules other than proteins, are called.

Preparation of alcohol from grignard reagent

What volume of 15V H2O2 required to react completely with 10 ml of 1 M KMnO4 in acidic medium? (1) 18.72 ml (2) 25.51 ml (3) 14.20 ml (4) 10.65 ml

What is acid and base?Explain in simple languag

Which one of the following is most reactive towards electrophilic substitution reaction?

21 Third ionisation energy for Li,Be,B,C

What happens when benzene diazonium chloride is treated with potassium cyanide in presence of Cu powder?

ntIn a experiment, 4g of M2Ox oxide was reduced to 2.8g of metal. If he atomic mass of the metal is 56g, the number of oxygen atoms in the oxide is?n

What mass of slaked lime would be required to decompose completely 4 grams of ammonium chloride and what would be the mass of each product ?

Q 2/30 The two bulbs of volume 5 litre and 10 litrecontaining an ideal gas at 9 atm and 6 atm respectively areconnected. What is the final pressure in the two bulbs if the temperature remains constant?

As per IUPAC rules, which one of the following groups will be regarded as the principal functional group?

find the no. of isomers for Pd[(NH3)2(ONO)2]

A balloon has 2 g of air. A small hole is pierced into it. The air comes out with a velocity of 4 m/s.If the balloon shrinks completely in 2.5 s. The average force acting on the balloon is

9. What is difference b/w amorphous and crystalline form?

Which of the following has maximum number unpaired electron (atoic number of Fe 24. options D) Fe (IV)C) Fe (II)B) Fe (II)A) Fe

The strongest hydrogen bonding is present in:

Does rate constant depend upon catalyst?

what is electrostatic

How many defects in KCl of 7.45 g

What happens when metals react with water

Name the process from which we can separate grinded sugar and grinded salt which are mixed with each other?

Comment on each of the following observations:(a) The mobilities of the alkali metal ions inaqueous solution are Li+< Na+< K+ <Rb+ <Cs+(b) Lithium is the onlyalkali metal to form a nitride directly.(c) (where M = Ca, Sr or Ba) is nearly constant.