46295 + Interview Questions in Chemistry

1.	For electron affinity of halogens which of the following is correct
Answer» For electron affinity of halogens which of the following is correct

1.

For electron affinity of halogens which of the following is correct

Answer»

For electron affinity of halogens which of the following is correct

2.	Select the correct statement from the following
Answer» Select the correct statement from the following

Discussion

3.	The decreasing order of net dipole moments of the following:
Answer» The decreasing order of net dipole moments of the following:

3.

The decreasing order of net dipole moments of the following:

Answer»

The decreasing order of net dipole moments of the following:

Discussion

4.	Which of the following reactants on reaction with conc. NaOH followed by acidification gives following lactone as the main product?
Answer» Which of the following reactants on reaction with conc. NaOH followed by acidification gives following lactone as the main product?

Discussion

5.	Which of the following reaction shows heterogeneous equilibrium?
Answer» Which of the following reaction shows heterogeneous equilibrium?

Discussion

6.	Aniline reacts with mixed acid(conc.HNO3 and conc.H2SO4 at 288K to give P (51%),Q (47%) and R(2%) . The major product(s) of the following reaction sequence is (are)
Answer» Aniline reacts with mixed acid(conc. $H N O_{3}$ and conc. $H_{2} S O_{4}$ at 288K to give P (51%),Q (47%) and R(2%) . The major product(s) of the following reaction sequence is (are)

Discussion

7.	Aniline reacts with acetaldehyde to form [MHCET 2004; AFMC 2004]
Answer» Aniline reacts with acetaldehyde to form [MHCET 2004; AFMC 2004]

7.

Aniline reacts with acetaldehyde to form [MHCET 2004; AFMC 2004]

Answer»

Aniline reacts with acetaldehyde to form

[MHCET 2004; AFMC 2004]

Discussion

8.	The Hybridisation of O atom in H2O is .
Answer» The Hybridisation of O atom in $H_{2} O$ is .

Discussion

9.	A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?
Answer» A mixture of gases contains $H_{2}$ and $O_{2}$ gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?

Discussion

10.	If the density of a certain gas at 30∘C and 768 torr is 1.35 kgm−3 then its density at STP will be:
Answer» If the density of a certain gas at $30^{\circ} {C and 768 torr is 1.35 kgm}^{- 3}$ then its density at STP will be:

Discussion

11.	Increae in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature? (a) Increase (b) No effect (c) Decrease (d) No regular pattern will be followed
Answer» Increae in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature? (a) Increase (b) No effect (c) Decrease (d) No regular pattern will be followed

11.

Increae in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature? (a) Increase (b) No effect (c) Decrease (d) No regular pattern will be followed

Answer»

Increae in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature?

(a) Increase (b) No effect

(c) Decrease (d) No regular pattern will be followed

Discussion

12.	If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are
Answer» If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with $m$ fraction of octahedral holes occupied by aluminium ions and $n$ fraction of tetrahedral holes occupied by magnesium ions, $m$ and $n$ , respectively, are

Discussion

13.	1 g of a gaseous compound of boron & oxygen occupies 0.80 L at 1 atm and 303 K. The compound is . (R=0.0820L atm mol−1K−1, Z: H=1.0, B=10.8)
Answer» 1 g of a gaseous compound of boron & oxygen occupies 0.80 L at 1 atm and 303 K. The compound is . (R=0.0820 $L a t m m o l^{- 1} K^{- 1}$ , Z: H=1.0, B=10.8)

Discussion

14.	Calculate the energy of radiation emitted for the electronic transition from infinity to ground state for Li2+ ion. (Given:c=3×108 m/s, RH=1.09678×107 m−1 h=6.626×10−34 J s−1)
Answer» Calculate the energy of radiation emitted for the electronic transition from infinity to ground state for $L i^{2 +}$ ion. $(Given : c = 3 \times 10^{8} m/s, R_{H} = 1.09678 \times 10^{7} m^{- 1}$ $h = 6.626 \times 10^{- 34} {J s}^{- 1})$

Discussion

15.	A gaseous hydrocarbon gives 0.72 g of water & 3.08 g of CO2 on combustion. The empirical formula of the compound is:
Answer» A gaseous hydrocarbon gives 0.72 g of water & 3.08 g of $C O_{2}$ on combustion. The empirical formula of the compound is:

Discussion

16.	Be shows difference in properties as compared to rest of the members of its group because of:
Answer» Be shows difference in properties as compared to rest of the members of its group because of:

Discussion

17.	2H3C−COOAgI2−−−→CCl4P(an ester)+CO2+AgI Which of the following reactions will also give the same product P?
Answer» $2 H_{3} C - C O O A g I_{2} - -- \to C C l_{4} P (a n e s t e r) + C O_{2} + A g I$ Which of the following reactions will also give the same product P?

Discussion

18.	The oxidation numbers of C - 1 and C - 2 in propene CH32CH=1CH2 are respectively
Answer» The oxidation numbers of C - 1 and C - 2 in propene $C H_{3}^{2} C H =^{1} C H_{2}$ are respectively

Discussion

19.	For l = 2, how many orbitals are possible?
Answer» For l = 2, how many orbitals are possible?

Discussion

20.	O3 is not a/an:
Answer» $O_{3}$ is not a/an:

Discussion

21.	The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is
Answer» The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is

Discussion

22.	The concentration of [Ag+] required to start the precipitation of AgBr is:
Answer» The concentration of [ $A g^{+}$ ] required to start the precipitation of AgBr is:

Discussion

23.	What is hydrogen bonding and what are the factors affecting it
Answer» What is hydrogen bonding and what are the factors affecting it

Discussion

24.	Nitric acid is 68% by weight and density of solution is 1.504 g/ml Calculate Molarity
Answer» Nitric acid is 68% by weight and density of solution is 1.504 g/ml Calculate Molarity

24.

Nitric acid is 68% by weight and density of solution is 1.504 g/ml Calculate Molarity

Answer»

Nitric acid is 68% by weight and density of solution is 1.504 g/ml

Calculate Molarity

Discussion

25.	Why do interstial compounds have higher melting points?
Answer» Why do interstial compounds have higher melting points?

Discussion

26.	The volume occupied by 7.23×1023 molecules of carbon dioxide and 3.01×1023 molecules of argon by atom at 0∘C and 1 atm pressure is___
Answer» The volume occupied by $7.23 \times 10^{23}$ molecules of carbon dioxide and $3.01 \times 10^{23}$ molecules of argon by atom at $0^{\circ} C$ and $1 atm$ pressure is___

Discussion

27.	The Lewis structure of H2S is:
Answer» The Lewis structure of H₂S is:

Discussion

28.	Isothermal compressibility (K) of an ideal gas is defined as K=−1V(∂V∂P)T.n What is the isothermal compressibility factor for an ideal gas at 1.0 atm ? ___
Answer» Isothermal compressibility (K) of an ideal gas is defined as $K = - \frac{1}{V} {(\frac{\partial V}{\partial P})}_{T . n}$ What is the isothermal compressibility factor for an ideal gas at 1.0 atm ? ___

Discussion

29.	Sulphides ores of metals are usually concentrated by Froth Flotation process. Which one of the following sulphides ores offers an exception and is concentrated by chemical leaching?
Answer» Sulphides ores of metals are usually concentrated by Froth Flotation process. Which one of the following sulphides ores offers an exception and is concentrated by chemical leaching?

Discussion

30.	What do we mean by close packed structure?
Answer» What do we mean by close packed structure?

Discussion

31.	The correct sequence of decreasing bond angles of the following hydrides is:
Answer» The correct sequence of decreasing bond angles of the following hydrides is:

Discussion

32.	For the chemical equilibrium, CaCO3(s)⇌CaO(s)+CO2(g),△Ho, can be determined from which one of the following plots
Answer» For the chemical equilibrium, $C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g), △ H^{o},$ can be determined from which one of the following plots

Discussion

33.	Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is 1.28A∘. What is the edge length of a unit cell of copper?
Answer» Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is $1.28 A^{\circ}$ . What is the edge length of a unit cell of copper?

Discussion

34.	The number of nodal planes in a px is
Answer» The number of nodal planes in a $p_{x}$ is

Discussion

35.	The weight of the pure sample of kclo3 to be decomposed in order to get 0.96g of o2..
Answer» The weight of the pure sample of kclo3 to be decomposed in order to get 0.96g of o2..

Discussion

36.	Which of the following methods is used to obtain 95.5% pure alcohol?
Answer» Which of the following methods is used to obtain 95.5% pure alcohol?

Discussion

37.	The number of squares in a truncated octahedron are:
Answer» The number of squares in a truncated octahedron are:

Discussion

38.	Give the decreasing order of the stabilities of the following:
Answer» Give the decreasing order of the stabilities of the following:

Discussion

39.	The number of oxygen atoms in borax which do not form pπ−pπ back bond is:___
Answer» The number of oxygen atoms in borax which do not form $p π - p π$ back bond is:___

Discussion

40.	What is the difference between Cl2 and 2Cl?
Answer» What is the difference between Cl2 and 2Cl?

Discussion

41.	Which one of the following is employed as a tranquilizer drug?
Answer» Which one of the following is employed as a tranquilizer drug?

Discussion

42.	How does surface tension varies according to lyophobic and lyophilic colloids and pls explain me the reason why does surface tension varies that way
Answer» How does surface tension varies according to lyophobic and lyophilic colloids and pls explain me the reason why does surface tension varies that way

Discussion

43.	What are Nitrides
Answer» What are Nitrides

Discussion

44.	Two solutions that have equal osmotic pressures are called
Answer» Two solutions that have equal osmotic pressures are called

Discussion

45.	gold has a closed packed structure which can be viewed as spheres occupying 0.74 of the total volume . if the density of the gold is 19.7 g/ml ,the atomic radius of the gold in pm is given (1.43)3x4pi=37
Answer» gold has a closed packed structure which can be viewed as spheres occupying 0.74 of the total volume . if the density of the gold is 19.7 g/ml ,the atomic radius of the gold in pm is given (1.43)³x4pi=37

45.

gold has a closed packed structure which can be viewed as spheres occupying 0.74 of the total volume . if the density of the gold is 19.7 g/ml ,the atomic radius of the gold in pm is given (1.43)3x4pi=37

Answer»

gold has a closed packed structure which can be viewed as spheres occupying 0.74 of the total volume . if the density of the gold is 19.7 g/ml ,the atomic radius of the gold in pm is

given (1.43)³x4pi=37

Discussion

46.	The molal elevation constant is the ratio of the elevation in B.P to:
Answer» The molal elevation constant is the ratio of the elevation in B.P to:

Discussion

47.	Non - polar compound is
Answer» Non - polar compound is

Discussion

48.	The correct order of acidic nature of oxides is in the order:
Answer» The correct order of acidic nature of oxides is in the order:

Discussion

49.	Calculate the amount of (NH4)2SO4 (in gram) which must be added to 1 L solution of 0.2 M NH4OH to yield a solution of pH=9.35 at 25oC. (Assume volume is not changing during the reaction) Kb for NH4OH is 1.8×10−5 Take log 1.8=0.25 and 100.1=1.25
Answer» Calculate the amount of $(N H_{4})_{2} S O_{4}$ (in gram) which must be added to $1 L$ solution of $0.2 M$ $N H_{4} O H$ to yield a solution of $p H = 9.35$ at $25^{o} C$ . (Assume volume is not changing during the reaction) $K_{b}$ for $N H_{4} O H$ is $1.8 \times 10^{- 5}$ Take $log 1.8 = 0.25 a n d 10^{0.1} = 1.25$

Discussion

50.	The difference between heats of reaction at constant pressure and at constant volume for the reaction 2C6H6(l)+15 O2(g)→12CO2(g)+6H2O(l) at 25∘C at in kJ is
Answer» The difference between heats of reaction at constant pressure and at constant volume for the reaction $2 C_{6} H_{6} (l) + 15 O_{2} (g) \to 12 C O_{2} (g) + 6 H_{2} O (l) a t 25^{\circ} C$ at in kJ is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

For electron affinity of halogens which of the following is correct

Select the correct statement from the following

The decreasing order of net dipole moments of the following:

Which of the following reactants on reaction with conc. NaOH followed by acidification gives following lactone as the main product?

Which of the following reaction shows heterogeneous equilibrium?

Aniline reacts with mixed acid(conc.HNO3 and conc.H2SO4 at 288K to give P (51%),Q (47%) and R(2%) . The major product(s) of the following reaction sequence is (are)

Aniline reacts with acetaldehyde to form [MHCET 2004; AFMC 2004]

The Hybridisation of O atom in H2O is .

A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?

If the density of a certain gas at 30∘C and 768 torr is 1.35 kgm−3 then its density at STP will be:

Increae in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature? (a) Increase (b) No effect (c) Decrease (d) No regular pattern will be followed

If the unit cell of a mineral has cubic closed packing (CCP) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are

1 g of a gaseous compound of boron &amp; oxygen occupies 0.80 L at 1 atm and 303 K. The compound is . (R=0.0820L atm mol−1K−1, Z: H=1.0, B=10.8)

Calculate the energy of radiation emitted for the electronic transition from infinity to ground state for Li2+ ion. (Given:c=3×108 m/s, RH=1.09678×107 m−1 h=6.626×10−34 J s−1)

A gaseous hydrocarbon gives 0.72 g of water &amp; 3.08 g of CO2 on combustion. The empirical formula of the compound is:

Be shows difference in properties as compared to rest of the members of its group because of:

2H3C−COOAgI2−−−→CCl4P(an ester)+CO2+AgI Which of the following reactions will also give the same product P?

The oxidation numbers of C - 1 and C - 2 in propene CH32CH=1CH2 are respectively

For l = 2, how many orbitals are possible?

O3 is not a/an:

The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is

The concentration of [Ag+] required to start the precipitation of AgBr is:

What is hydrogen bonding and what are the factors affecting it

Nitric acid is 68% by weight and density of solution is 1.504 g/ml Calculate Molarity

Why do interstial compounds have higher melting points?

The volume occupied by 7.23×1023 molecules of carbon dioxide and 3.01×1023 molecules of argon by atom at 0∘C and 1 atm pressure is___

The Lewis structure of H2S is:

Isothermal compressibility (K) of an ideal gas is defined as K=−1V(∂V∂P)T.n What is the isothermal compressibility factor for an ideal gas at 1.0 atm ? ___

Sulphides ores of metals are usually concentrated by Froth Flotation process. Which one of the following sulphides ores offers an exception and is concentrated by chemical leaching?

What do we mean by close packed structure?

The correct sequence of decreasing bond angles of the following hydrides is:

For the chemical equilibrium, CaCO3(s)⇌CaO(s)+CO2(g),△Ho, can be determined from which one of the following plots

Copper crystallises in a structure of face centred cubic unit cell. The atomic radius of copper is 1.28A∘. What is the edge length of a unit cell of copper?

The number of nodal planes in a px is

The weight of the pure sample of kclo3 to be decomposed in order to get 0.96g of o2..

Which of the following methods is used to obtain 95.5% pure alcohol?

The number of squares in a truncated octahedron are:

Give the decreasing order of the stabilities of the following:

The number of oxygen atoms in borax which do not form pπ−pπ back bond is:___

What is the difference between Cl2 and 2Cl?

Which one of the following is employed as a tranquilizer drug?

How does surface tension varies according to lyophobic and lyophilic colloids and pls explain me the reason why does surface tension varies that way

What are Nitrides

Two solutions that have equal osmotic pressures are called

gold has a closed packed structure which can be viewed as spheres occupying 0.74 of the total volume . if the density of the gold is 19.7 g/ml ,the atomic radius of the gold in pm is given (1.43)3x4pi=37

The molal elevation constant is the ratio of the elevation in B.P to:

Non - polar compound is

The correct order of acidic nature of oxides is in the order:

Calculate the amount of (NH4)2SO4 (in gram) which must be added to 1 L solution of 0.2 M NH4OH to yield a solution of pH=9.35 at 25oC. (Assume volume is not changing during the reaction) Kb for NH4OH is 1.8×10−5 Take log 1.8=0.25 and 100.1=1.25

The difference between heats of reaction at constant pressure and at constant volume for the reaction 2C6H6(l)+15 O2(g)→12CO2(g)+6H2O(l) at 25∘C at in kJ is

1 g of a gaseous compound of boron & oxygen occupies 0.80 L at 1 atm and 303 K. The compound is . (R=0.0820L atm mol−1K−1, Z: H=1.0, B=10.8)

A gaseous hydrocarbon gives 0.72 g of water & 3.08 g of CO2 on combustion. The empirical formula of the compound is: