46295 + Interview Questions in Chemistry

1.	Gastric juice of an adult human being contain
Answer» Gastric juice of an adult human being contain

Discussion

2.	compare bond angles among NH_3 , H_2O , CH_{
Answer» compare bond angles among NH_3 , H_2O , CH_{

Discussion

3.	31 Show structural isomers in C3H6O
Answer» 31 Show structural isomers in C3H6O

Discussion

4.	How much calcium oxide will be formed on decomposition of 350 g of limestone.(Given: Atomic mass of Ca=40 u)
Answer» How much calcium oxide will be formed on decomposition of $350 g$ of limestone. (Given: Atomic mass of $C a = 40 u$ )

Discussion

5.	Photons of minimum energy 496 kJ/mol are needed to ionize sodium atoms. Calculate the lowest frequecy of light that will ionize a sodium atom.
Answer» Photons of minimum energy 496 kJ/mol are needed to ionize sodium atoms. Calculate the lowest frequecy of light that will ionize a sodium atom.

Discussion

6.	Question 12 When sodium peroxide is treated with dilute sulphuric acid, we get ..... (a) sodium sulphate and water (b) sodium sulphate and oxygen (c) sodium sulphate , hydrogen and oxgygen (d) sodium sulphate and hydrogen peroxide
Answer» Question 12 When sodium peroxide is treated with dilute sulphuric acid, we get ..... (a) sodium sulphate and water (b) sodium sulphate and oxygen (c) sodium sulphate , hydrogen and oxgygen (d) sodium sulphate and hydrogen peroxide

6.

Question 12 When sodium peroxide is treated with dilute sulphuric acid, we get ..... (a) sodium sulphate and water (b) sodium sulphate and oxygen (c) sodium sulphate , hydrogen and oxgygen (d) sodium sulphate and hydrogen peroxide

Answer»

Question 12

When sodium peroxide is treated with dilute sulphuric acid, we get .....

(a) sodium sulphate and water

(b) sodium sulphate and oxygen

(c) sodium sulphate , hydrogen and oxgygen

(d) sodium sulphate and hydrogen peroxide

Discussion

7.	Which of the following compound will show geometrical isomerism?
Answer» Which of the following compound will show geometrical isomerism?

Discussion

8.	Ecc
Answer» Ecc

Discussion

9.	A patient is asked to drink BaSO4solution for examining the stomach by X-rays, because X-rays are:
Answer» A patient is asked to drink BaSO₄ solution for examining the stomach by X-rays, because X-rays are:

Discussion

10.	Correct set of quantum numbers representing the last electron of iron Fe will be
Answer» Correct set of quantum numbers representing the last electron of iron Fe will be

Discussion

11.	The concentration of hydrogen ion in a sample of soft drink is 3.8×10–3M. what is its pH?
Answer» The concentration of hydrogen ion in a sample of soft drink is $3.8 \times 10^{- 3} M$ . what is its pH?

Discussion

12.	Which of the following statements is correct for a reversible process in a state of equilibrium ?
Answer» Which of the following statements is correct for a reversible process in a state of equilibrium ?

Discussion

13.	A two stage single acting air compressor delivers, 1000 kg/hr of air at 20 bar pressure. The suction occurs at STP conditions . Assume the process to be ideal; the free air delivery is _____ m3/min12.89
Answer» A two stage single acting air compressor delivers, 1000 kg/hr of air at 20 bar pressure. The suction occurs at STP conditions . Assume the process to be ideal; the free air delivery is _____ $m^{3} / m i n$ 12.89

Discussion

14.	Denaturation of proteins leads to loss of biological activity by
Answer» Denaturation of proteins leads to loss of biological activity by

Discussion

15.	Guasss Law Derivation
Answer» Guasss Law Derivation

Discussion

16.	Find the major product [B] of the following sequence of reactions is:
Answer» Find the major product [B] of the following sequence of reactions is:

Discussion

17.	The number of geometrical isomers of [Co(NH3)3(NO3)3] :
Answer» The number of geometrical isomers of $[C o (N H_{3})_{3} (N O_{3})_{3}]$ :

Discussion

18.	the cooh group exert which effect on benzene ring
Answer» the cooh group exert which effect on benzene ring

Discussion

19.	If one litre of water contains 10−5 moles of H+ ions at a certain temperature. Calculate the degree of ionization of water.
Answer» If one litre of water contains $10^{- 5}$ moles of $H^{+}$ ions at a certain temperature. Calculate the degree of ionization of water.

Discussion

20.	(a) Write the principle of vapour phase refining. (b) Write the role of dilute NaCN in the extraction of silver. (c) What is the role of collectors in the froth floatation process? Give an example of a collector.
Answer» (a) Write the principle of vapour phase refining. (b) Write the role of dilute NaCN in the extraction of silver. (c) What is the role of collectors in the froth floatation process? Give an example of a collector.

Discussion

21.	Which one is strongest electrolyte in the following ?
Answer» Which one is strongest electrolyte in the following ?

Discussion

22.	11.Why gravitational potential energy is negative ?
Answer» 11.Why gravitational potential energy is negative ?

Discussion

23.	The major product of the following chemical reaction is:
Answer» The major product of the following chemical reaction is:

Discussion

24.	Acetophenone when reacted with a base,C2H5ONa, yeilds a stable compound which has the structure.
Answer» Acetophenone when reacted with a base, $C_{2} H_{5} O N a$ , yeilds a stable compound which has the structure.

Discussion

25.	What is the correct structure of XeF4?
Answer» What is the correct structure of $X e F_{4} ?$

Discussion

26.	Arrange the following compounds in the decreasing order of rate of dehydration (using conc. H2SO4):
Answer» Arrange the following compounds in the decreasing order of rate of dehydration (using conc. $H_{2} S O_{4})$ :

Discussion

27.	Among the given set of oxides the sets in which both the oxides are not amphoteric is/are: Mn2O7,CrO3,Cr2O3,CrO,V2O5,V2O4
Answer» Among the given set of oxides the sets in which both the oxides are not amphoteric is/are: $M n_{2} O_{7}, C r O_{3}, C r_{2} O_{3}, C r O, V_{2} O_{5}, V_{2} O_{4}$

Discussion

28.	How many coordination number are there in hexaganol close packing
Answer» How many coordination number are there in hexaganol close packing

Discussion

29.	Compound B is
Answer» Compound B is

Discussion

30.	11. 2A+BC+D In this reaction, if we double the concentration of A, reaction rate become two times. And in other experiment we double the concentration of A and B, reaction rate again become two times. What is the order of ts reaction
Answer» 11. 2A+BC+D In this reaction, if we double the concentration of A, reaction rate become two times. And in other experiment we double the concentration of A and B, reaction rate again become two times. What is the order of ts reaction

Discussion

31.	Calculate the mass of Sodium acetate to make 500ml of 0.375 molar aqueous solution. The Molar Mass is 82.0245g/mol.
Answer» Calculate the mass of Sodium acetate to make 500ml of 0.375 molar aqueous solution. The Molar Mass is 82.0245g/mol.

Discussion

32.	how are allotropes similar chemically
Answer» how are allotropes similar chemically

Discussion

33.	Which of the following is strongest Lewis base(a) CH_3-,(b) Ag(d) H2(c) NH3
Answer» Which of the following is strongest Lewis base(a) CH_3-,(b) Ag(d) H2(c) NH3

Discussion

34.	The polymer of ethene is known as
Answer» The polymer of ethene is known as

Discussion

35.	The oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and following data were obtainedLead oxide=3.45 g Oxygen=0.24 gBrown oxide =1.195 gOxygen =0.156 g
Answer» The oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and following data were obtained Lead oxide=3.45 g Oxygen=0.24 g Brown oxide =1.195 g Oxygen =0.156 g

Discussion

36.	28 kg of N2 and 3 kg of H2 are mixed to produce NH3. The maximum amount of NH3 formed is.
Answer» 28 kg of N2 and 3 kg of H2 are mixed to produce NH3. The maximum amount of NH3 formed is.

Discussion

37.	A solution of 200 mL of 1 M KOH is added to 200 mL of 1 M HCl and the mixture after attaining reaction equilibrium shows a rise in temperature by △T1. The experiment is repeated by using 50 mL of 1 M KOH and 50 mL 1 M HCl which at equilibrium shows a rise in temperature by △T2. Thus:
Answer» A solution of 200 mL of 1 M KOH is added to 200 mL of 1 M HCl and the mixture after attaining reaction equilibrium shows a rise in temperature by $△ T_{1} .$ The experiment is repeated by using 50 mL of 1 M KOH and 50 mL 1 M HCl which at equilibrium shows a rise in temperature by $△ T_{2} .$ Thus:

Discussion

38.	Onemole of H2Oand one mole of CO are taken in 10 L vessel and heated to725K. At equilibrium 40% of water (by mass) reacts with CO according tothe equation, Calculatethe equilibrium constant for the reaction.
Answer» One mole of H₂O and one mole of CO are taken in 10 L vessel and heated to 725 K. At equilibrium 40% of water (by mass) reacts with CO according to the equation, Calculate the equilibrium constant for the reaction.

38.

Onemole of H2Oand one mole of CO are taken in 10 L vessel and heated to725K. At equilibrium 40% of water (by mass) reacts with CO according tothe equation, Calculatethe equilibrium constant for the reaction.

Answer»

One
mole of H₂O
and one mole of CO are taken in 10 L vessel and heated to

725
K. At equilibrium 40% of water (by mass) reacts with CO according to
the equation,

Calculate
the equilibrium constant for the reaction.

Discussion

39.	In Kolbe's reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why?
Answer» In Kolbe's reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why?

Discussion

40.	Solubility of Al(OH)3 in presence of 0.1M Ca(OH)2 is \lbrack Ksp=4×10^{-34}\rbrack (1)4×10^{-34} (2)5×10^{-34} (3)5×10^{-32} (4)5×10^{-30
Answer» Solubility of Al(OH)3 in presence of 0.1M Ca(OH)2 is \lbrack Ksp=4×10^{-34}\rbrack (1)4×10^{-34} (2)5×10^{-34} (3)5×10^{-32} (4)5×10^{-30

Discussion

41.	Which of the following products is formed when adipic acid is heated ?
Answer» Which of the following products is formed when adipic acid is heated ?

Discussion

42.	In which states, the compound of vanadium is diamagnetic?
Answer» In which states, the compound of vanadium is diamagnetic?

Discussion

43.	Question 2.32 Calculate the depression in the freezing point of water when 10g of CH3CH2CHClCOOH is added to 250 g of water, Ka=1.4×10−3; Kf=1.86 K kg mol−1
Answer» Question 2.32 Calculate the depression in the freezing point of water when 10g of $C H_{3} C H_{2} C H C l C O O H$ is added to 250 g of water, $K_{a} = 1.4 \times 10^{- 3}$ ; $K_{f} = 1.86 K k g m o l^{- 1}$

43.

Question 2.32 Calculate the depression in the freezing point of water when 10g of CH3CH2CHClCOOH is added to 250 g of water, Ka=1.4×10−3; Kf=1.86 K kg mol−1

Answer»

Question 2.32

Calculate the depression in the freezing point of water when 10g of $C H_{3} C H_{2} C H C l C O O H$ is added to 250 g of water, $K_{a} = 1.4 \times 10^{- 3}$ ; $K_{f} = 1.86 K k g m o l^{- 1}$

Discussion

44.	Draw all the isomers (geometrical and optical) of:(i) [CoCl2(en)2]+ (ii) [Co(NH3)Cl(en)2]2+ (iii) [Co(NH3)2Cl2(en)]+
Answer» Draw all the isomers (geometrical and optical) of: (i) [CoCl₂(en)₂]⁺ (ii) [Co(NH₃)Cl(en)₂]²⁺ (iii) [Co(NH₃)₂Cl₂(en)]⁺

44.

Draw all the isomers (geometrical and optical) of:(i) [CoCl2(en)2]+ (ii) [Co(NH3)Cl(en)2]2+ (iii) [Co(NH3)2Cl2(en)]+

Answer»

Draw all the isomers (geometrical and optical) of:

(i) [CoCl₂(en)₂]⁺

(ii) [Co(NH₃)Cl(en)₂]²⁺

(iii) [Co(NH₃)₂Cl₂(en)]⁺

Discussion

45.	For the following gases equilibrium, N2O4(g)⇌2NO2(g),Kp is found to be equal to Kc. This is attained when :
Answer» For the following gases equilibrium, $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g), K_{p}$ is found to be equal to $K_{c}$ . This is attained when :

Discussion

46.	The electronegativity values of C,H,O,N and S are 2.5,2.1,3.5,3.0 and 2.5 respectively. The most polar bond is
Answer» The electronegativity values of C,H,O,N and S are 2.5,2.1,3.5,3.0 and 2.5 respectively. The most polar bond is

Discussion

47.	Why zirconium and hafnium have nearly same size?
Answer» Why zirconium and hafnium have nearly same size?

Discussion

48.	What is meant by second coordination number?
Answer» What is meant by second coordination number?

Discussion

49.	11. 20% H2SO4 w/v solution having density 1.2 g/ml. Molarity of the solution is 1) 2.44 2) 2.04 3) 1.70 4) 2.35
Answer» 11. 20% H2SO4 w/v solution having density 1.2 g/ml. Molarity of the solution is 1) 2.44 2) 2.04 3) 1.70 4) 2.35

Discussion

50.	Benzaldehyde,when heated with conc,KOH solution gives
Answer» Benzaldehyde,when heated with conc,KOH solution gives

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Gastric juice of an adult human being contain

compare bond angles among NH_3 , H_2O , CH_{

31 Show structural isomers in C3H6O

How much calcium oxide will be formed on decomposition of 350 g of limestone.(Given: Atomic mass of Ca=40 u)

Photons of minimum energy 496 kJ/mol are needed to ionize sodium atoms. Calculate the lowest frequecy of light that will ionize a sodium atom.

Question 12 When sodium peroxide is treated with dilute sulphuric acid, we get ..... (a) sodium sulphate and water (b) sodium sulphate and oxygen (c) sodium sulphate , hydrogen and oxgygen (d) sodium sulphate and hydrogen peroxide

Which of the following compound will show geometrical isomerism?

Ecc

A patient is asked to drink BaSO4solution for examining the stomach by X-rays, because X-rays are:

Correct set of quantum numbers representing the last electron of iron Fe will be

The concentration of hydrogen ion in a sample of soft drink is 3.8×10–3M. what is its pH?

Which of the following statements is correct for a reversible process in a state of equilibrium ?

A two stage single acting air compressor delivers, 1000 kg/hr of air at 20 bar pressure. The suction occurs at STP conditions . Assume the process to be ideal; the free air delivery is _____ m3/min12.89

Denaturation of proteins leads to loss of biological activity by

Guasss Law Derivation

Find the major product [B] of the following sequence of reactions is:

The number of geometrical isomers of [Co(NH3)3(NO3)3] :

the cooh group exert which effect on benzene ring

If one litre of water contains 10−5 moles of H+ ions at a certain temperature. Calculate the degree of ionization of water.

(a) Write the principle of vapour phase refining. (b) Write the role of dilute NaCN in the extraction of silver. (c) What is the role of collectors in the froth floatation process? Give an example of a collector.

Which one is strongest electrolyte in the following ?

11.Why gravitational potential energy is negative ?

The major product of the following chemical reaction is:

Acetophenone when reacted with a base,C2H5ONa, yeilds a stable compound which has the structure.

What is the correct structure of XeF4?

Arrange the following compounds in the decreasing order of rate of dehydration (using conc. H2SO4):

Among the given set of oxides the sets in which both the oxides are not amphoteric is/are: Mn2O7,CrO3,Cr2O3,CrO,V2O5,V2O4

How many coordination number are there in hexaganol close packing

Compound B is

11. 2A+BC+D In this reaction, if we double the concentration of A, reaction rate become two times. And in other experiment we double the concentration of A and B, reaction rate again become two times. What is the order of ts reaction

Calculate the mass of Sodium acetate to make 500ml of 0.375 molar aqueous solution. The Molar Mass is 82.0245g/mol.

how are allotropes similar chemically

Which of the following is strongest Lewis base(a) CH_3-,(b) Ag(d) H2(c) NH3

The polymer of ethene is known as

The oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and following data were obtainedLead oxide=3.45 g Oxygen=0.24 gBrown oxide =1.195 gOxygen =0.156 g

28 kg of N2 and 3 kg of H2 are mixed to produce NH3. The maximum amount of NH3 formed is.

A solution of 200 mL of 1 M KOH is added to 200 mL of 1 M HCl and the mixture after attaining reaction equilibrium shows a rise in temperature by △T1. The experiment is repeated by using 50 mL of 1 M KOH and 50 mL 1 M HCl which at equilibrium shows a rise in temperature by △T2. Thus:

Onemole of H2Oand one mole of CO are taken in 10 L vessel and heated to725K. At equilibrium 40% of water (by mass) reacts with CO according tothe equation, Calculatethe equilibrium constant for the reaction.

In Kolbe's reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why?

Solubility of Al(OH)3 in presence of 0.1M Ca(OH)2 is \lbrack Ksp=4×10^{-34}\rbrack (1)4×10^{-34} (2)5×10^{-34} (3)5×10^{-32} (4)5×10^{-30

Which of the following products is formed when adipic acid is heated ?

In which states, the compound of vanadium is diamagnetic?

Question 2.32 Calculate the depression in the freezing point of water when 10g of CH3CH2CHClCOOH is added to 250 g of water, Ka=1.4×10−3; Kf=1.86 K kg mol−1

Draw all the isomers (geometrical and optical) of:(i) [CoCl2(en)2]+ (ii) [Co(NH3)Cl(en)2]2+ (iii) [Co(NH3)2Cl2(en)]+

For the following gases equilibrium, N2O4(g)⇌2NO2(g),Kp is found to be equal to Kc. This is attained when :

The electronegativity values of C,H,O,N and S are 2.5,2.1,3.5,3.0 and 2.5 respectively. The most polar bond is

Why zirconium and hafnium have nearly same size?

What is meant by second coordination number?

11. 20% H2SO4 w/v solution having density 1.2 g/ml. Molarity of the solution is 1) 2.44 2) 2.04 3) 1.70 4) 2.35

Benzaldehyde,when heated with conc,KOH solution gives