46295 + Interview Questions in Chemistry

1.	Calculate the freezing of an aqueous solution containing 10.50g of mgbr2in 200g of water
Answer» Calculate the freezing of an aqueous solution containing 10.50g of mgbr2in 200g of water

Discussion

2.	The correct order of Acid strength is
Answer» The correct order of Acid strength is

Discussion

3.	What is the total volume of the particles present in a body centered unit cell?
Answer» What is the total volume of the particles present in a body centered unit cell?

Discussion

4.	An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (Given : 1 atm litre =101.3 J)
Answer» An ideal gas expands against a constant external pressure of $2.0$ atmosphere from $20$ litre to 40 litre and absorbs $10 k J$ of heat from surrounding. What is the change in internal energy of the system? (Given : 1 atm litre $= 101.3 J$ )

Discussion

5.	12. what is the priority of function groups in iupac nomenclature?Explain it.
Answer» 12. what is the priority of function groups in iupac nomenclature?Explain it.

Discussion

6.	Which of the following unit cell represent the first nearest atom distance in fcc?
Answer» Which of the following unit cell represent the first nearest atom distance in fcc?

Discussion

7.	Benzene diazonium chloride on boiling with dilute sulphuric acid gives [MP PMT 1983]
Answer» Benzene diazonium chloride on boiling with dilute sulphuric acid gives [MP PMT 1983]

Discussion

8.	Q 2/14 Which of the following willl decrease the pH of50 mL solution of 0.01 M HCI? 1.Addition of 5 mL of 1 M HCI 2.Addition of 50 mL of 0.01 M HCI 3.Addition of 50 mL of 0.002 M HCl 4Addition of Mg
Answer» Q 2/14 Which of the following willl decrease the pH of50 mL solution of 0.01 M HCI? 1.Addition of 5 mL of 1 M HCI 2.Addition of 50 mL of 0.01 M HCI 3.Addition of 50 mL of 0.002 M HCl 4Addition of Mg

Discussion

9.	A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?
Answer» A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?

Discussion

10.	MY and NY3, two nearly insoluble salts, have thesame KSP values of 6.2× 10-13 at roomtemperature. Which statement would be true in regard to my & ny3 (1) The addition of the salt of KY to solution of MYand NY3 will have no effect on their solubilities (2) The molar solubilities of MY and NY3, in water are identical (3) The molar solubility of MY in water is less than NY3(4) The salts MY and NY3, are more soluble in 0.5 M KY than in pure water
Answer» MY and NY3, two nearly insoluble salts, have thesame KSP values of 6.2× 10-13 at roomtemperature. Which statement would be true in regard to my & ny3 (1) The addition of the salt of KY to solution of MYand NY3 will have no effect on their solubilities (2) The molar solubilities of MY and NY3, in water are identical (3) The molar solubility of MY in water is less than NY3(4) The salts MY and NY3, are more soluble in 0.5 M KY than in pure water

Discussion

11.	melting point is highest for 1) zn 2)cr 3)cu 4)sc
Answer» melting point is highest for 1) zn 2)cr 3)cu 4)sc

Discussion

12.	What is the oxidation state of phosphorus in hypophosphoric acid?
Answer» What is the oxidation state of phosphorus in hypophosphoric acid?

Discussion

13.	Which one is a nucleophilic substitution reaction among the following?
Answer» Which one is a nucleophilic substitution reaction among the following?

Discussion

14.	why the bond order of CO+ is 3.5 and not 2.5 ?
Answer» why the bond order of CO+ is 3.5 and not 2.5 ?

Discussion

15.	The product of the hole concentration and the conduction electron concentration turns out to be independent of the amount of any impurity doped. The concentration of conduction electrons in germanium is 6×1019 per cubic metre. When some phosphorous impurity is doped into a germanium sample, the concentration of conduction electrons increases to 2×1023 per cubic metre. The concentration of the holes in the doped germanium is 18×10x. The value of x is .(Integer only)
Answer» The product of the hole concentration and the conduction electron concentration turns out to be independent of the amount of any impurity doped. The concentration of conduction electrons in germanium is $6 \times 10^{19}$ per cubic metre. When some phosphorous impurity is doped into a germanium sample, the concentration of conduction electrons increases to $2 \times 10^{23}$ per cubic metre. The concentration of the holes in the doped germanium is $18 \times 10^{x}$ . The value of $x$ is .(Integer only)

Discussion

16.	If t is the time required for a radioactive substance to reduce to one third of its initial amount, what fraction would be left over after0.5 t
Answer» If t is the time required for a radioactive substance to reduce to one third of its initial amount, what fraction would be left over after0.5 t

Discussion

17.	6.Which of the following structures will form a linear polymeric structure due to H-bonding (1) HCl (2) HF (3) H2O (4) NH3
Answer» 6.Which of the following structures will form a linear polymeric structure due to H-bonding (1) HCl (2) HF (3) H2O (4) NH3

Discussion

18.	The critical constants for water are 374 ∘C, 217 atm and 0.05 L mol−1. calculate a and b.
Answer» The critical constants for water are $374^{\circ} C, 217$ atm and 0.05 L mol $^{- 1}$ . calculate $a$ and $b$ .

Discussion

19.	What happens when mwtals react with organic compounds
Answer» What happens when mwtals react with organic compounds

Discussion

20.	What is formation of third layer over 2nd layer
Answer» What is formation of third layer over 2nd layer

Discussion

21.	Which of the following pairs exists in free state in the earth's crust?
Answer» Which of the following pairs exists in free state in the earth's crust?

Discussion

22.	The major products of the following reactionZnS(s)+O2(g)heat−−−−→Are
Answer» The major products of the following reaction $Z n S (s) + O_{2} (g) h e a t - --- \to$ Are

22.

The major products of the following reactionZnS(s)+O2(g)heat−−−−→Are

Answer»

The major products of the following reaction

$Z n S (s) + O_{2} (g) h e a t - --- \to$

Are

Discussion

23.	Determine percentage ionic character of HCl by Henry and Smith formula.
Answer» Determine percentage ionic character of HCl by Henry and Smith formula.

Discussion

24.	If A = [1, ∞), B = [3, ∞) then A – B
Answer» If A = [1, ∞), B = [3, ∞) then A – B

Discussion

25.	15 Enthalpy of neutralization of HCl by NaOH is 55.84 kJ/mol and by NH4OH is 51.34 kJ/mol. The enthalpy of ionization of NH4OH is (1) 107.18 kJ (2) 107.18 kJ (3) 4.5 kJ (4) 4.5 kJ
Answer» 15 Enthalpy of neutralization of HCl by NaOH is 55.84 kJ/mol and by NH4OH is 51.34 kJ/mol. The enthalpy of ionization of NH4OH is (1) 107.18 kJ (2) 107.18 kJ (3) 4.5 kJ (4) 4.5 kJ

Discussion

26.	When aqueous AgNO3 is electrolyzed using Pt electrodes, if 3.2 g of O2 is liberated at the anode, the Amount of Ag that will be deposited at the cathode in grams is (at wt. of Ag = 108)
Answer» When aqueous $A g N O_{3}$ is electrolyzed using Pt electrodes, if 3.2 g of $O_{2}$ is liberated at the anode, the Amount of Ag that will be deposited at the cathode in grams is (at wt. of Ag = 108)

Discussion

27.	difference between nascent hydrogen and atomic hydrogen? and which is more reactive and why
Answer» difference between nascent hydrogen and atomic hydrogen? and which is more reactive and why

Discussion

28.	significant figure
Answer» significant figure

Discussion

29.	The element with highest conductivity is Options: AgGeCSi
Answer» The element with highest conductivity is Options: Ag Ge C Si

Discussion

30.	Is allyl benzene a plannar compond. Why or Why not?
Answer» Is allyl benzene a plannar compond. Why or Why not?

Discussion

31.	How to find the bond order of graphite and benzene using the formula and diagram and not molecular orbital theory??
Answer» How to find the bond order of graphite and benzene using the formula and diagram and not molecular orbital theory??

Discussion

32.	The PP bond energy is X KJ/mole then the energy needed for the dissociation of 124 grams of white phosphorus is
Answer» The PP bond energy is X KJ/mole then the energy needed for the dissociation of 124 grams of white phosphorus is

Discussion

33.	Which of the following undergoes a change of oxidation state of -5?
Answer» Which of the following undergoes a change of oxidation state of -5?

Discussion

34.	The density of 3 M solution of NaCl is 1.25 g mL-1. Calculate molality of the solution
Answer» The density of 3 M solution of NaCl is 1.25 g mL^-1. Calculate molality of the solution

Discussion

35.	The number of significant zeroes present in the measured value 0.020040 is?Explain step by step
Answer» The number of significant zeroes present in the measured value 0.020040 is? Explain step by step

Discussion

36.	Which of the following will have the least bond angle?
Answer» Which of the following will have the least bond angle?

Discussion

37.	128.What is dimension
Answer» 128.What is dimension

Discussion

38.	NH4Cl + (A)→ Microcosmic salt\overset{}{\xrightarrow{heat}} (B) \xrightarrow[{+MnO}]{heat} (C)(violet bead) (a),(b),(c) respectively are.(a) Na3PO4, NaPO3, (Mn)3(PO4),2 (b) Na2HPO4, Na3PO4, Mn3(PO4)2 (c) Na2HPO4, NaPO3, Mn(PO3)2 (d) NaHPO4,NaPO3, NaMnPO4.
Answer» NH4Cl + (A)→ Microcosmic salt\overset{}{\xrightarrow{heat}} (B) \xrightarrow[{+MnO}]{heat} (C)(violet bead) (a),(b),(c) respectively are.(a) Na3PO4, NaPO3, (Mn)3(PO4),2 (b) Na2HPO4, Na3PO4, Mn3(PO4)2 (c) Na2HPO4, NaPO3, Mn(PO3)2 (d) NaHPO4,NaPO3, NaMnPO4.

Discussion

39.	The binding energy of deuteron is 2.2 MeV and that of 2He4 is 28 MeV. If two deuterons are fused to form one 2He4, then the energy released is
Answer» The binding energy of $deuteron$ is $2.2 MeV$ and that of $_{2} {He}^{4}$ is $28 MeV$ . If two deuterons are fused to form one $_{2} {He}^{4}$ , then the energy released is

Discussion

40.	48. 1.0 gram of a mixture of carbonates of calcium and magnesium gave 240ml of co2 at N.T.P. Calculate the percentage composition of the mixture.
Answer» 48. 1.0 gram of a mixture of carbonates of calcium and magnesium gave 240ml of co2 at N.T.P. Calculate the percentage composition of the mixture.

Discussion

41.	Which of the following is a free radical?
Answer» Which of the following is a free radical?

Discussion

42.	Which one of the following has the lowest boiling point?
Answer» Which one of the following has the lowest boiling point?

Discussion

43.	In which of the following pairs both the complexes show optical isomerism
Answer» In which of the following pairs both the complexes show optical isomerism

Discussion

44.	What is Stephen's reaction which is used for preparation of ketones in alehyde ketones chapte
Answer» What is Stephen's reaction which is used for preparation of ketones in alehyde ketones chapte

Discussion

45.	Q2-WHAT IS LINE SPECTRUM OF HYDROGEN?
Answer» Q2-WHAT IS LINE SPECTRUM OF HYDROGEN?

Discussion

46.	9. How many chiral compound are possible on mono chlorination of 2 methyl butane??
Answer» 9. How many chiral compound are possible on mono chlorination of 2 methyl butane??

Discussion

47.	The hybridization of carbon in diamond, graphite and fullerene is respectively:
Answer» The hybridization of carbon in diamond, graphite and fullerene is respectively:

Discussion

48.	4.out of chloroform and ethylchloride which will have higher boiling point
Answer» 4.out of chloroform and ethylchloride which will have higher boiling point

Discussion

49.	how to find the trend of thermal stability for carbonates and hydride of p block elements
Answer» how to find the trend of thermal stability for carbonates and hydride of p block elements

Discussion

50.	The degree of hydrolysis of ammonium acetate is related to its hydrolysis constant by the expression
Answer» The degree of hydrolysis of ammonium acetate is related to its hydrolysis constant by the expression

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Calculate the freezing of an aqueous solution containing 10.50g of mgbr2in 200g of water

The correct order of Acid strength is

What is the total volume of the particles present in a body centered unit cell?

An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (Given : 1 atm litre =101.3 J)

12. what is the priority of function groups in iupac nomenclature?Explain it.

Which of the following unit cell represent the first nearest atom distance in fcc?

Benzene diazonium chloride on boiling with dilute sulphuric acid gives [MP PMT 1983]

Q 2/14 Which of the following willl decrease the pH of50 mL solution of 0.01 M HCI? 1.Addition of 5 mL of 1 M HCI 2.Addition of 50 mL of 0.01 M HCI 3.Addition of 50 mL of 0.002 M HCl 4Addition of Mg

A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?

melting point is highest for 1) zn 2)cr 3)cu 4)sc

What is the oxidation state of phosphorus in hypophosphoric acid?

Which one is a nucleophilic substitution reaction among the following?

why the bond order of CO+ is 3.5 and not 2.5 ?

If t is the time required for a radioactive substance to reduce to one third of its initial amount, what fraction would be left over after0.5 t

6.Which of the following structures will form a linear polymeric structure due to H-bonding (1) HCl (2) HF (3) H2O (4) NH3

The critical constants for water are 374 ∘C, 217 atm and 0.05 L mol−1. calculate a and b.

What happens when mwtals react with organic compounds

What is formation of third layer over 2nd layer

Which of the following pairs exists in free state in the earth's crust?

The major products of the following reactionZnS(s)+O2(g)heat−−−−→Are

Determine percentage ionic character of HCl by Henry and Smith formula.

If A = [1, ∞), B = [3, ∞) then A – B

15 Enthalpy of neutralization of HCl by NaOH is 55.84 kJ/mol and by NH4OH is 51.34 kJ/mol. The enthalpy of ionization of NH4OH is (1) 107.18 kJ (2) 107.18 kJ (3) 4.5 kJ (4) 4.5 kJ

When aqueous AgNO3 is electrolyzed using Pt electrodes, if 3.2 g of O2 is liberated at the anode, the Amount of Ag that will be deposited at the cathode in grams is (at wt. of Ag = 108)

difference between nascent hydrogen and atomic hydrogen? and which is more reactive and why

significant figure

The element with highest conductivity is Options: AgGeCSi

Is allyl benzene a plannar compond. Why or Why not?

How to find the bond order of graphite and benzene using the formula and diagram and not molecular orbital theory??

The PP bond energy is X KJ/mole then the energy needed for the dissociation of 124 grams of white phosphorus is

Which of the following undergoes a change of oxidation state of -5?

The density of 3 M solution of NaCl is 1.25 g mL-1. Calculate molality of the solution

The number of significant zeroes present in the measured value 0.020040 is?Explain step by step

Which of the following will have the least bond angle?

128.What is dimension

NH4Cl + (A)→ Microcosmic salt\overset{}{\xrightarrow{heat}} (B) \xrightarrow[{+MnO}]{heat} (C)(violet bead) (a),(b),(c) respectively are.(a) Na3PO4, NaPO3, (Mn)3(PO4),2 (b) Na2HPO4, Na3PO4, Mn3(PO4)2 (c) Na2HPO4, NaPO3, Mn(PO3)2 (d) NaHPO4,NaPO3, NaMnPO4.

The binding energy of deuteron is 2.2 MeV and that of 2He4 is 28 MeV. If two deuterons are fused to form one 2He4, then the energy released is

48. 1.0 gram of a mixture of carbonates of calcium and magnesium gave 240ml of co2 at N.T.P. Calculate the percentage composition of the mixture.

Which of the following is a free radical?

Which one of the following has the lowest boiling point?

In which of the following pairs both the complexes show optical isomerism

What is Stephen's reaction which is used for preparation of ketones in alehyde ketones chapte

Q2-WHAT IS LINE SPECTRUM OF HYDROGEN?

9. How many chiral compound are possible on mono chlorination of 2 methyl butane??

The hybridization of carbon in diamond, graphite and fullerene is respectively:

4.out of chloroform and ethylchloride which will have higher boiling point

how to find the trend of thermal stability for carbonates and hydride of p block elements

The degree of hydrolysis of ammonium acetate is related to its hydrolysis constant by the expression