46295 + Interview Questions in Chemistry

1.	Which of the following represents neoprene polymer?
Answer» Which of the following represents neoprene polymer?

Discussion

2.	100∫0ex−[x]dx=
Answer» $100 \int 0 e^{x - [x]} d x =$

Discussion

3.	A barometer tube of radius 1 mm contains mercury (surface tension 0.45 N/m and contact angle 143∘). If atmospheric pressure is 75 cm of mercury column, what is height of mercury in the tube ρHg=13.5 gm/cc.
Answer» A barometer tube of radius $1 mm$ contains mercury (surface tension $0.45 N/m$ and contact angle $143^{\circ}$ ). If atmospheric pressure is $75 cm$ of mercury column, what is height of mercury in the tube $ρ_{H g} = 13.5 gm/cc$ .

Discussion

4.	The degree of dissociation (α) of a weak electrolyte, AxBy is related to the van ’t Hoff factor (i) by the expression:
Answer» The degree of dissociation $(α)$ of a weak electrolyte, $A_{x} B_{y}$ is related to the van ’t Hoff factor (i) by the expression:

Discussion

5.	The given molecule is used as an:
Answer» The given molecule is used as an:

Discussion

6.	For the reaction: 2A(aq)⇌3B(aq);Kc=0.075 M. If the equilibrium mixture contains 0.2 moles of A and 0.3 moles of B, then the volume of solution (in litre) is
Answer» For the reaction: $2 A (a q) ⇌ 3 B (a q); K_{c} = 0.075 M .$ If the equilibrium mixture contains 0.2 moles of A and 0.3 moles of B, then the volume of solution (in litre) is

Discussion

7.	The standard enthalpies of formation at 300 K for CCl4(l), H2O(g), CO2(g) and HCl(g) are -107, -242, -394, and -93 kJmol−1 respectively. The value of ΔU for the reaction CCl4(l)+2H2O(g)→CO2(g)+4HCl(g) at 300 K is:
Answer» The standard enthalpies of formation at 300 K for $C C l_{4} (l), H_{2} O (g), C O_{2} (g) a n d H C l (g)$ are -107, -242, -394, and -93 $k J m o l^{- 1}$ respectively. The value of $Δ U$ for the reaction $C C l_{4} (l) + 2 H_{2} O (g) \to C O_{2} (g) + 4 H C l (g)$ at 300 K is:

Discussion

8.	Two different adiabatic paths for the same gas intersects two isothermals at T1 and T2 as shown in the P−V diagram. Then VaVd is equal to
Answer» Two different adiabatic paths for the same gas intersects two isothermals at $T_{1}$ and $T_{2}$ as shown in the $P - V$ diagram. Then $\frac{V_{a}}{V_{d}}$ is equal to

Discussion

9.	In which of the following cases, Hoffmann product is the major product?
Answer» In which of the following cases, Hoffmann product is the major product?

Discussion

10.	Calculate change in internal energy for 2 moles of an ideal gas that temperature rises from 27∘ C to 127∘ C. [ Given : Cp,m = 13.314 + 0.04 T ]
Answer» Calculate change in internal energy for 2 moles of an ideal gas that temperature rises from 27 $^{\circ}$ C to 127 $^{\circ}$ C. [ Given : Cp,m = 13.314 + 0.04 T ]

Discussion

11.	Represent 3x = 2y - 2 in standard form ax + by + c =0 and find the values of a, b and c.
Answer» Represent 3x = 2y - 2 in standard form ax + by + c =0 and find the values of a, b and c.

Discussion

12.	Boron forms BF4- ion while aluminium forms AlF63- ion,though they are in same group.why?
Answer» Boron forms BF₄^-ion while aluminium forms AlF_{6^{3- ion,though they are in same group.why?}}

Discussion

13.	why does lower E0 value is preferred at anode and higher at cathode?
Answer» why does lower E⁰ value is preferred at anode and higher at cathode?

Discussion

14.	Which of the following is/are elastomers?
Answer» Which of the following is/are elastomers?

Discussion

15.	XeF2 molecule has a ___ structure .
Answer» $X e F_{2}$ molecule has a ___ structure .

Discussion

16.	Which one of the following is the smallest in size?
Answer» Which one of the following is the smallest in size?

Discussion

17.	Molecular orbital theory for N2-
Answer» Molecular orbital theory for N₂^-

Discussion

18.	Calculate the mass of CaCO3 required to react completely with 25ml of 0.75M HCl
Answer» Calculate the mass of CaCO3 required to react completely with 25ml of 0.75M HCl

Discussion

19.	Protein can be most easily removed from [UPSEAT 2000, 02]
Answer» Protein can be most easily removed from [UPSEAT 2000, 02]

19.

Protein can be most easily removed from [UPSEAT 2000, 02]

Answer»

Protein can be most easily removed from

[UPSEAT 2000, 02]

Discussion

20.	(a) When concentrated sulphuric acid was added to an unknown salt present in a test tube a brown gas (A) was evolved. This gas intensified when copper turnings were added to this test tube. On cooling, the gas (A) changed into a colourless solid (B). (i) Identify (A) and (B). (ii) Write the structures of (A) and (B). (iii) Why does gas (A) change to solid on cooling? (b) Arrange the following in the decreasing order of their reducing character : HF, HCI, HBr, HI (c) Complete the following reaction : XeF4+SbF5→
Answer» (a) When concentrated sulphuric acid was added to an unknown salt present in a test tube a brown gas (A) was evolved. This gas intensified when copper turnings were added to this test tube. On cooling, the gas (A) changed into a colourless solid (B). (i) Identify (A) and (B). (ii) Write the structures of (A) and (B). (iii) Why does gas (A) change to solid on cooling? (b) Arrange the following in the decreasing order of their reducing character : HF, HCI, HBr, HI (c) Complete the following reaction : $X e F_{4} + S b F_{5} \to$

Discussion

21.	Average Molecular Mass of ozonised oxygen is 36. Calculate percentage of oxygen in ozonised oxygen
Answer» Average Molecular Mass of ozonised oxygen is 36. Calculate percentage of oxygen in ozonised oxygen

Discussion

22.	For gaseous reactions, if Δ H is the change in enthalpy & Δ U that in internal energy, then
Answer» For gaseous reactions, if $Δ H$ is the change in enthalpy & $Δ U$ that in internal energy, then

Discussion

23.	Which is not a polyacrylate?
Answer» Which is not a polyacrylate?

Discussion

24.	The following figure represents which type of magnetic properties of substances?
Answer» The following figure represents which type of magnetic properties of substances?

24.

The following figure represents which type of magnetic properties of substances?

Answer»

The following figure represents which type of magnetic properties of substances?

Discussion

25.	Is the core of Bleaching Powder CaOCl2 or Ca(OCl)2 ? If asked in exam for the formula of Bleaching Powder can we write only "CaOCl2 " ?
Answer» Is the core of Bleaching Powder CaOCl₂ or Ca(OCl)₂? If asked in exam for the formula of Bleaching Powder can we write only "CaOCl₂ " ?

25.

Is the core of Bleaching Powder CaOCl2 or Ca(OCl)2 ? If asked in exam for the formula of Bleaching Powder can we write only "CaOCl2 " ?

Answer»

Is the core of Bleaching Powder CaOCl₂ or Ca(OCl)₂?

If asked in exam for the formula of Bleaching Powder can we write only "CaOCl₂ " ?

Discussion

26.	The element 90Th232 belongs to thorium series. Which of the following will act as the end product of the series
Answer» The element $_{90} T h^{232}$ belongs to thorium series. Which of the following will act as the end product of the series

Discussion

27.	IUPAC nomenclature of following co-ordination compounds: 1) K4[Fe(CN)6] 2)[Co(NH3)5 cl] cl2 3)[Co(NH3)5 (NO2)] cl2 4)[Cr(Co)5]
Answer» IUPAC nomenclature of following co-ordination compounds: 1) K₄[Fe(CN)₆] 2)[Co(NH₃)₅ cl] cl₂ 3)[Co(NH₃)₅(NO₂)] cl₂ 4)[Cr(Co)₅]

27.

IUPAC nomenclature of following co-ordination compounds: 1) K4[Fe(CN)6] 2)[Co(NH3)5 cl] cl2 3)[Co(NH3)5 (NO2)] cl2 4)[Cr(Co)5]

Answer»

IUPAC nomenclature of following co-ordination compounds:

1) K₄[Fe(CN)₆]

2)[Co(NH₃)₅ cl] cl₂

3)[Co(NH₃)₅(NO₂)] cl₂

4)[Cr(Co)₅]

Discussion

28.	In a homo nuclear molecule, which of the following sets of orbitals are degenerate?
Answer» In a homo nuclear molecule, which of the following sets of orbitals are degenerate?

Discussion

29.	The term ‘evil quartet' is related with four major causes of:
Answer» The term ‘evil quartet' is related with four major causes of:

Discussion

30.	The number of ways in which 5 A's and 6 B's can be arranged in a row which reads the same backwards and forwards is N, Find the value of N/2
Answer» The number of ways in which 5 A's and 6 B's can be arranged in a row which reads the same backwards and forwards is N, Find the value of N/2

Discussion

31.	Examples of redox reaction
Answer» Examples of redox reaction

Discussion

32.	How to identify the order of a reaction?
Answer» How to identify the order of a reaction?

Discussion

33.	What is formula unit?
Answer» What is formula unit?

Discussion

34.	Name the factors responsible for the solubility of alcohols in water.
Answer» Name the factors responsible for the solubility of alcohols in water.

Discussion

35.	Out of 2-chloroethanol and ethanol which is more acidic and why?
Answer» Out of 2-chloroethanol and ethanol which is more acidic and why?

Discussion

36.	The compound that causes a general antidepressant action on the central nervous system belongs to the class of.... a) analgesics (b) tranquilizers (c) narcotic analgesics (d) antihistamines
Answer» The compound that causes a general antidepressant action on the central nervous system belongs to the class of.... a) analgesics (b) tranquilizers (c) narcotic analgesics (d) antihistamines

36.

The compound that causes a general antidepressant action on the central nervous system belongs to the class of.... a) analgesics (b) tranquilizers (c) narcotic analgesics (d) antihistamines

Answer»

The compound that causes a general antidepressant action on the central nervous system belongs to the class of....

a) analgesics
(b) tranquilizers
(c) narcotic analgesics
(d) antihistamines

Discussion

37.	Atmospheric pressure is around _____ mmHg
Answer» Atmospheric pressure is around _____ mmHg

Discussion

38.	When sodium is dissolved in lequid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to (a) ammoniated electron (b) sodium ion (c) sodium amide (d) ammoniated sodium ion
Answer» When sodium is dissolved in lequid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to (a) ammoniated electron (b) sodium ion (c) sodium amide (d) ammoniated sodium ion

Discussion

39.	How many primary amines are possible of the formula C4H11N ?
Answer» How many primary amines are possible of the formula C₄H₁₁N ?

Discussion

40.	What will be the product in the following reaction?
Answer» What will be the product in the following reaction?

40.

What will be the product in the following reaction?

Answer»

What will be the product in the following reaction?

Discussion

41.	At STP weight of 1 litre of a gas is 3.16 grams and weight of 1 litre of Hydrogen is 0.09 gm. If molecular weight of Hydrogen is 2, molecular weight of the gas is
Answer» At STP weight of $1 l i t r e$ of a gas is $3.16 g r a m s$ and weight of $1 l i t r e$ of Hydrogen is $0.09 g m$ . If molecular weight of Hydrogen is 2, molecular weight of the gas is

Discussion

42.	How many moles of carbon dioxide gas is dissolved in a 1 L bottle of carbonated water if the manufacturer uses a pressure of 2.4 atm in the bottling process at 25∘C? Given: KH of CO2 in water = 29.76 atm/(mol/L) at 25∘C
Answer» How many moles of carbon dioxide gas is dissolved in a 1 L bottle of carbonated water if the manufacturer uses a pressure of 2.4 atm in the bottling process at $25^{\circ} C$ ? Given: $K_{H}$ of $C O_{2}$ in water = 29.76 atm/(mol/L) at $25^{\circ} C$

Discussion

43.	The diagonal relationship is shown by certain elements of which periods?
Answer» The diagonal relationship is shown by certain elements of which periods?

Discussion

44.	The reagent 'X' is
Answer» The reagent 'X' is

44.

The reagent 'X' is

Answer»

The

reagent 'X' is

Discussion

45.	The ratio of rates of diffusion of two gases is 6:4. Calculate the ratio of their Molecular Weights.
Answer» The ratio of rates of diffusion of two gases is 6:4. Calculate the ratio of their Molecular Weights.

Discussion

46.	The rate constant, activation energy and Arrhenius parameter of a chemical reaction at 25oC are 3.0 x 10-4 s-1, 104.4 kJ mol-1 and 6.0 x 1014 s-1 respectively. The value of the rate constant at infinite temperature is is
Answer» The rate constant, activation energy and Arrhenius parameter of a chemical reaction at 25^oC are 3.0 x 10^-4 s^-1, 104.4 kJ mol^-1 and 6.0 x 10¹⁴ s^-1 respectively. The value of the rate constant at infinite temperature is is

Discussion

47.	For a chemical reaction if the free energy change is negative. then Ecell will be
Answer» For a chemical reaction if the free energy change is negative. then $E_{c e l l}$ will be

Discussion

48.	Observe the following structures and pick up the correct statement ?
Answer» Observe the following structures and pick up the correct statement ?

Discussion

49.	Amphibole silicate structure has ‘x’ number of corner shared per tetrahedron. The value of ‘x’ is
Answer» Amphibole silicate structure has ‘x’ number of corner shared per tetrahedron. The value of ‘x’ is

Discussion

50.	The hybridisation of orbitals of N atom in NO−3,NO+2andNH+4 are respectively
Answer» The hybridisation of orbitals of N atom in $N O_{3}^{-}, N O_{2}^{+} a n d N H_{4}^{+}$ are respectively

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following represents neoprene polymer?

100∫0ex−[x]dx=

A barometer tube of radius 1 mm contains mercury (surface tension 0.45 N/m and contact angle 143∘). If atmospheric pressure is 75 cm of mercury column, what is height of mercury in the tube ρHg=13.5 gm/cc.

The degree of dissociation (α) of a weak electrolyte, AxBy is related to the van ’t Hoff factor (i) by the expression:

The given molecule is used as an:

For the reaction: 2A(aq)⇌3B(aq);Kc=0.075 M. If the equilibrium mixture contains 0.2 moles of A and 0.3 moles of B, then the volume of solution (in litre) is

The standard enthalpies of formation at 300 K for CCl4(l), H2O(g), CO2(g) and HCl(g) are -107, -242, -394, and -93 kJmol−1 respectively. The value of ΔU for the reaction CCl4(l)+2H2O(g)→CO2(g)+4HCl(g) at 300 K is:

Two different adiabatic paths for the same gas intersects two isothermals at T1 and T2 as shown in the P−V diagram. Then VaVd is equal to

In which of the following cases, Hoffmann product is the major product?

Calculate change in internal energy for 2 moles of an ideal gas that temperature rises from 27∘ C to 127∘ C. [ Given : Cp,m = 13.314 + 0.04 T ]

Represent 3x = 2y - 2 in standard form ax + by + c =0 and find the values of a, b and c.

Boron forms BF4- ion while aluminium forms AlF63- ion,though they are in same group.why?

why does lower E0 value is preferred at anode and higher at cathode?

Which of the following is/are elastomers?

XeF2 molecule has a ___ structure .

Which one of the following is the smallest in size?

Molecular orbital theory for N2-

Calculate the mass of CaCO3 required to react completely with 25ml of 0.75M HCl

Protein can be most easily removed from [UPSEAT 2000, 02]

Average Molecular Mass of ozonised oxygen is 36. Calculate percentage of oxygen in ozonised oxygen

For gaseous reactions, if Δ H is the change in enthalpy &amp; Δ U that in internal energy, then

Which is not a polyacrylate?

The following figure represents which type of magnetic properties of substances?

Is the core of Bleaching Powder CaOCl2 or Ca(OCl)2 ? If asked in exam for the formula of Bleaching Powder can we write only "CaOCl2 ​​​​​​" ?

The element 90Th232 belongs to thorium series. Which of the following will act as the end product of the series

IUPAC nomenclature of following co-ordination compounds: 1) K4[Fe(CN)6] 2)[Co(NH3)5 cl] cl2 3)[Co(NH3)5 (NO2)] cl2 4)[Cr(Co)5]

In a homo nuclear molecule, which of the following sets of orbitals are degenerate?

The term ‘evil quartet' is related with four major causes of:

The number of ways in which 5 A's and 6 B's can be arranged in a row which reads the same backwards and forwards is N, Find the value of N/2

Examples of redox reaction

How to identify the order of a reaction?

What is formula unit?

Name the factors responsible for the solubility of alcohols in water.

Out of 2-chloroethanol and ethanol which is more acidic and why?

The compound that causes a general antidepressant action on the central nervous system belongs to the class of.... a) analgesics (b) tranquilizers (c) narcotic analgesics (d) antihistamines

Atmospheric pressure is around _____ mmHg

When sodium is dissolved in lequid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to (a) ammoniated electron (b) sodium ion (c) sodium amide (d) ammoniated sodium ion

How many primary amines are possible of the formula C4H11N ?

What will be the product in the following reaction?

At STP weight of 1 litre of a gas is 3.16 grams and weight of 1 litre of Hydrogen is 0.09 gm. If molecular weight of Hydrogen is 2, molecular weight of the gas is

How many moles of carbon dioxide gas is dissolved in a 1 L bottle of carbonated water if the manufacturer uses a pressure of 2.4 atm in the bottling process at 25∘C? Given: KH of CO2 in water = 29.76 atm/(mol/L) at 25∘C

The diagonal relationship is shown by certain elements of which periods?

The reagent 'X' is

The ratio of rates of diffusion of two gases is 6:4. Calculate the ratio of their Molecular Weights.

The rate constant, activation energy and Arrhenius parameter of a chemical reaction at 25oC are 3.0 x 10-4 s-1, 104.4 kJ mol-1 and 6.0 x 1014 s-1 respectively. The value of the rate constant at infinite temperature is is

For a chemical reaction if the free energy change is negative. then Ecell will be

Observe the following structures and pick up the correct statement ?

Amphibole silicate structure has ‘x’ number of corner shared per tetrahedron. The value of ‘x’ is

The hybridisation of orbitals of N atom in NO−3,NO+2andNH+4 are respectively

For gaseous reactions, if Δ H is the change in enthalpy & Δ U that in internal energy, then

Is the core of Bleaching Powder CaOCl2 or Ca(OCl)2 ? If asked in exam for the formula of Bleaching Powder can we write only "CaOCl2 " ?