46295 + Interview Questions in Chemistry

1.	which of the following is the product of C6H5CHO + [Ag(NH3)2]+ + OH---> product + Ag +H20 + NH31. C6H5COO-2. C6H5CH2O-3. C6H5COOAg4. C6H5O-
Answer» which of the following is the product of C6H5CHO + [Ag(NH3)2]+ + OH---> product + Ag +H20 + NH3 1. C6H5COO- 2. C6H5CH2O- 3. C6H5COOAg 4. C6H5O-

Discussion

2.	A gaseous hydrocarbon gives upon combustion, 0.72 g water and 3.08 g of CO2. The empirical formula of the hydrocarbon is:
Answer» A gaseous hydrocarbon gives upon combustion, 0.72 g water and 3.08 g of CO2. The empirical formula of the hydrocarbon is:

Discussion

3.	ECl3 (where E=B,P,As,Bi) of these elements are known.Bond angles are in the following order-
Answer» $E C l_{3}$ (where $E = B, P, A s, B i$ ) of these elements are known. Bond angles are in the following order-

Discussion

4.	CFCl3 is responsible for the decomposition of ozone layer. Which of the following reacts with ozone to form oxygen?
Answer» $C F C l_{3}$ is responsible for the decomposition of ozone layer. Which of the following reacts with ozone to form oxygen?

Discussion

5.	Which of the following is correct? List AList BList CA.Rate of reaction1.−Δ[A]Δt=−d[A]dta.ΔH=+ ve or -veB.Rate constant of a reaction2.Vt=V0b.ΔH=−veC.Equilibrium constant3.Vt≠V0c.t→0D.Vt=V0.t2734.Increasesd.ΔH→0E.Vt=V0+V0.t2735.Decreasese.T→0
Answer» Which of the following is correct? $\begin{matrix} List A & List B & List C A . & Rate of reaction & 1. & - \frac{Δ [A]}{Δ t} = - \frac{d [A]}{d t} & a . & Δ H = + ve or -ve B . & Rate constant of a reaction & 2. & V_{t} = V_{0} & b . & Δ H = - v e C . & Equilibrium constant & 3. & V_{t} \neq V_{0} & c . & t \to 0 D . & V_{t} = \frac{V_{0} . t}{273} & 4. & Increases & d . & Δ H \to 0 E . & V_{t} = V_{0} + \frac{V_{0} . t}{273} & 5. & Decreases & e . & T \to 0 \end{matrix}$

5.

Which of the following is correct? List AList BList CA.Rate of reaction1.−Δ[A]Δt=−d[A]dta.ΔH=+ ve or -veB.Rate constant of a reaction2.Vt=V0b.ΔH=−veC.Equilibrium constant3.Vt≠V0c.t→0D.Vt=V0.t2734.Increasesd.ΔH→0E.Vt=V0+V0.t2735.Decreasese.T→0

Answer»

Which of the following is correct?

$\begin{matrix} List A & List B & List C A . & Rate of reaction & 1. & - \frac{Δ [A]}{Δ t} = - \frac{d [A]}{d t} & a . & Δ H = + ve or -ve B . & Rate constant of a reaction & 2. & V_{t} = V_{0} & b . & Δ H = - v e C . & Equilibrium constant & 3. & V_{t} \neq V_{0} & c . & t \to 0 D . & V_{t} = \frac{V_{0} . t}{273} & 4. & Increases & d . & Δ H \to 0 E . & V_{t} = V_{0} + \frac{V_{0} . t}{273} & 5. & Decreases & e . & T \to 0 \end{matrix}$

Discussion

6.	The ionization constant of NH+4 in water is 2.8×10−10 at 25∘C.The rate constant for the reaction of NH+4 and OH− to form NH3 and H2O at 25∘C is 1.4Lmol−1s−1 ,the rate constant per proton transfer from water to NH3 will be
Answer» The ionization constant of $N H_{4}^{+}$ in water is $2.8 \times 10^{- 10}$ at $25^{\circ} C$ .The rate constant for the reaction of $N H_{4}^{+}$ and $O H^{-}$ to form $N H_{3}$ and $H_{2} O$ at $25^{\circ} C$ is $1.4 L m o l^{- 1} s^{- 1}$ ,the rate constant per proton transfer from water to $N H_{3}$ will be

6.

The ionization constant of NH+4 in water is 2.8×10−10 at 25∘C.The rate constant for the reaction of NH+4 and OH− to form NH3 and H2O at 25∘C is 1.4Lmol−1s−1 ,the rate constant per proton transfer from water to NH3 will be

Answer»

The ionization constant of $N H_{4}^{+}$ in water is $2.8 \times 10^{- 10}$ at $25^{\circ} C$ .The rate constant for the reaction of $N H_{4}^{+}$ and $O H^{-}$ to form $N H_{3}$ and $H_{2} O$ at $25^{\circ} C$ is $1.4 L m o l^{- 1} s^{- 1}$ ,the rate constant per proton transfer from water to $N H_{3}$ will be

Discussion

7.	Which of the compounds bearing different nucleophile (Y) in (a)-(d) gives the terminal/internal alkene most readily in the following reaction?
Answer» Which of the compounds bearing different nucleophile (Y) in (a)-(d) gives the terminal/internal alkene most readily in the following reaction?

Discussion

8.

Match Column I with Column II.Column I (Element)Column II (Covalent radii in pm)a. Fp. 114b. Clq. 133c. Brr. 64d. Is. 99

Answer»

Match Column I with Column II.

Column I (Element)	Column II (Covalent radii in pm)
a. $F$	p. 114
b. $C l$	q. 133
c. $B r$	r. 64
d. $I$	s. 99

Discussion

9.	~The kinematic indeterminacy of the plane structure considering the members to be inextensible is6
Answer» ~The kinematic indeterminacy of the plane structure considering the members to be inextensible is 6

Discussion

10.	16 g oxygen gas expands at STP to occupy double of its original volume. The work done during the process is:
Answer» $16 g$ oxygen gas expands at STP to occupy double of its original volume. The work done during the process is:

Discussion

11.	We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?
Answer» We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

11.

We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

Answer»

We have a cube as follows which has a sphere inside in the following two ways:

Assume that the cube and sphere are identical in both cases.

Is the packing fraction different in these two cases?

Discussion

12.	Induced charge q never be greater than inducing charge Q .Explain why?
Answer» Induced charge q never be greater than inducing charge Q .Explain why?

Discussion

13.	1*10^-3 m solution of Pt(NH3)4Cl4 in water shows depression in freezing point by 0.0054 C. The given structure of the following compound will be (Given Kf=1.85 K/m)(1) [Pt(NH3)4]Cl4(2) [Pt(NH3)3Cl]Cl3(3) [Pt(NH3)Cl2]Cl2(4) [Pt(NH3)Cl3]Cl.
Answer» 1*10^-3 m solution of Pt(NH3)4Cl4 in water shows depression in freezing point by 0.0054 C. The given structure of the following compound will be (Given Kf=1.85 K/m) (1) [Pt(NH3)4]Cl4 (2) [Pt(NH3)3Cl]Cl3 (3) [Pt(NH3)Cl2]Cl2 (4) [Pt(NH3)Cl3]Cl.

Discussion

14.	For the given scheme: The difference in molecular mass of D and B is: g/mol
Answer» For the given scheme: The difference in molecular mass of D and B is: g/mol

Discussion

15.	How can water co exists in three different states at same temperature.?
Answer» How can water co exists in three different states at same temperature.?

Discussion

16.	Ionicproduct of water at 310 K is 2.7 × 10–14.What is the pH of neutral water at this temperature?
Answer» Ionic product of water at 310 K is 2.7 × 10^–14. What is the pH of neutral water at this temperature?

Discussion

17.	30 How polarisation of anion introduces covalent character in compound
Answer» 30 How polarisation of anion introduces covalent character in compound

Discussion

18.	43. Assertion: co2 has a linear structure Reason: the central atom is sp hybridised the anwer is given to be (b),but isn't the presence of sp hybridised atom the reason for any compound's linear structure?
Answer» 43. Assertion: co2 has a linear structure Reason: the central atom is sp hybridised the anwer is given to be (b),but isn't the presence of sp hybridised atom the reason for any compound's linear structure?

Discussion

19.	Why Dancing resonance highly stable?
Answer» Why Dancing resonance highly stable?

Discussion

20.	ehat is reoative atomic weight?how are they calculated
Answer» ehat is reoative atomic weight?how are they calculated

Discussion

21.	For the reduction of ketones to hydrocarbon, the appropriate agent is
Answer» For the reduction of ketones to hydrocarbon, the appropriate agent is

Discussion

22.	CO (g) is dissolved in H2O at 25oC and 0.010 atm. Henry's law constnat for this system is 5.80×104 atm. Thus, mole fraction of CO (g) is
Answer» $C O (g)$ is dissolved in $H_{2} O$ at $25^{o} C$ and 0.010 atm. Henry's law constnat for this system is $5.80 \times 10^{4}$ atm. Thus, mole fraction of $C O (g)$ is

Discussion

23.	Match the following order of the reactions with their half-life periods
Answer» Match the following order of the reactions with their half-life periods

Discussion

24.	The heat of combustion of CH4(g),graphite and H2(g) are 20 kcal,-40 kcal and-10 kcal respectively. The heat of formationof methane is
Answer» The heat of combustion of CH4(g),graphite and H2(g) are 20 kcal,-40 kcal and-10 kcal respectively. The heat of formationof methane is

Discussion

25.	The reaction of CH3MgBr with C2H5OH
Answer» The reaction of CH3MgBr with C2H5OH

Discussion

26.	Which of the following reactions will give primary amine?
Answer» Which of the following reactions will give primary amine?

Discussion

27.	Ca(OH)2+CO2⟶CaCO3+H2O percentage yield = 30%If 200 mL of N10 Ca(OH)2 is mixed with 2.2 g of CO2, then the number of moles of CaCO3 produced will be:
Answer» $C a (O H)_{2} + C O_{2} ⟶ C a C O_{3} + H_{2} O percentage yield = 30%$ If $200 mL$ of $\frac{N}{10}$ $C a (O H)_{2}$ is mixed with $2.2 g$ of $C O_{2}$ , then the number of moles of $C a C O_{3}$ produced will be:

Discussion

28.	How much amount of CaCO3 in grams having percentage purity 50 percent produces 0.56 L of CO2 at STP on heating?
Answer» How much amount of $C a C O_{3}$ in grams having percentage purity $50$ percent produces $0.56$ $L$ of $C O_{2}$ at STP on heating?

Discussion

29.	Amongst the following , the most stable complex is .
Answer» Amongst the following , the most stable complex is .

Discussion

30.	what is reaction with HNO2 acid?
Answer» what is reaction with HNO2 acid?

Discussion

31.	Chemical formula for calcium pyrophosphate is Ca2P2O7. The formula for ferric pyrophosphate will be
Answer» Chemical formula for calcium pyrophosphate is $C a_{2} P_{2} O_{7}$ . The formula for ferric pyrophosphate will be

Discussion

32.	Condensation polymer among the following is
Answer» Condensation polymer among the following is

Discussion

33.	38 If at certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5mm of Hg, the molality of solution is (1)0.02 (2)1.2 (3)1.11 (4)0.08 (5)0.06
Answer» 38 If at certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5mm of Hg, the molality of solution is (1)0.02 (2)1.2 (3)1.11 (4)0.08 (5)0.06

Discussion

34.	Show that : i) A ∩ ( B – C) = (A ∩ B) – (A ∩ C)
Answer» Show that : i) A ∩ ( B – C) = (A ∩ B) – (A ∩ C)

Discussion

35.	In the organic compound CH2=CH−CH2−CH2–C≡CH, the pair of hydridised orbitals involved in the formation of: C2−C3 bond is: (a) sp−sp2 (b) sp−sp3 (c) sp2−sp3 (d) sp3−sp3
Answer» In the organic compound $C H_{2} = C H - C H_{2} - C H_{2} - C \equiv C H$ , the pair of hydridised orbitals involved in the formation of: $C_{2} - C_{3}$ bond is: (a) $s p - s p^{2}$ (b) $s p - s p^{3}$ (c) $s p^{2} - s p^{3}$ (d) $s p^{3} - s p^{3}$

Discussion

36.	In FCC unit cell edge length is
Answer» In FCC unit cell edge length is

Discussion

37.	On heating 0.199 g of a metallic oxide in a stream of hydrogen, 0.045 g of water is formed. Find the equivalent weight of the metal.
Answer» On heating $0.199 g$ of a metallic oxide in a stream of hydrogen, $0.045 g$ of water is formed. Find the equivalent weight of the metal.

Discussion

38.	how many gram atoms of H and S are contained in 0.40 mole of H2S?give me complete solution
Answer» how many gram atoms of H and S are contained in 0.40 mole of H2S?give me complete solution

Discussion

39.	Which of the following represents an heterogenous equilibrium?
Answer» Which of the following represents an heterogenous equilibrium?

Discussion

40.	The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [a0 is Bohr radius]:
Answer» The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [ $a_{0}$ is Bohr radius]:

Discussion

41.	34. Can Sulphur exhibit isomorphism due to catenation
Answer» 34. Can Sulphur exhibit isomorphism due to catenation

Discussion

42.	Which of the following molecules has a non-polar covalent bond?
Answer» Which of the following molecules has a non-polar covalent bond?

Discussion

43.	Arrange stability order in phenol, water and ethanol. Explain
Answer» Arrange stability order in phenol, water and ethanol. Explain

Discussion

44.	On dissolving 0.25 g of a non volatile substance in 30 mL of benzene (Density of benzene 0.8 g/mL) its freezing point decreases by 0.40∘C. Calculate the molar mass of non - volatile substance (Kf=5.12 K kg mol−1)
Answer» On dissolving $0.25 g$ of a non volatile substance in $30 m L$ of benzene (Density of benzene $0.8 g / m L$ ) its freezing point decreases by ${0.40}^{\circ} C$ . Calculate the molar mass of non - volatile substance $(K_{f} = 5.12 K k g m o l^{- 1})$

Discussion

45.	in a hexagonal closest packing in two layers one above the other the coordeination number of each sphere wil b
Answer» in a hexagonal closest packing in two layers one above the other the coordeination number of each sphere wil b

Discussion

46.	What is the order of filling of electrons in molecular orbital for NO,N_2,O_2?
Answer» What is the order of filling of electrons in molecular orbital for NO,N_2,O_2?

Discussion

47.	68 Solubility of AgCl in 0.2M NaCl is x and that in 0.1 M AgNO3 is y then which of the following is correct ? (1) x = y (2) x > y (3) x < y (4) we can not predict
Answer» 68 Solubility of AgCl in 0.2M NaCl is x and that in 0.1 M AgNO3 is y then which of the following is correct ? (1) x = y (2) x > y (3) x < y (4) we can not predict

Discussion

48.	WHAT WILL BE THE NAME OF THE FOLLOWING COMPOUND: CH3 \| CH-CH3 \|CH3 CH2 CH CH2 CH CH2 CH3 \| CH2 \| CH3
Answer» WHAT WILL BE THE NAME OF THE FOLLOWING COMPOUND: CH3 \| CH-CH3 \| CH3 CH2 CH CH2 CH CH2 CH3 \| CH2 \| CH3

Discussion

49.	The conductometric titration curve for CH3COOH against NaOH can be given as
Answer» The conductometric titration curve for $C H_{3} C O O H$ against $N a O H$ can be given as

Discussion

50.	mass of naoh present in 500 cm³ of 2.5 n naoh solution
Answer» mass of naoh present in 500 cm³ of 2.5 n naoh solution

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

which of the following is the product of C6H5CHO + [Ag(NH3)2]+ + OH---> product + Ag +H20 + NH31. C6H5COO-2. C6H5CH2O-3. C6H5COOAg4. C6H5O-

A gaseous hydrocarbon gives upon combustion, 0.72 g water and 3.08 g of CO2. The empirical formula of the hydrocarbon is:

ECl3 (where E=B,P,As,Bi) of these elements are known.Bond angles are in the following order-

CFCl3 is responsible for the decomposition of ozone layer. Which of the following reacts with ozone to form oxygen?

Which of the following is correct? List AList BList CA.Rate of reaction1.−Δ[A]Δt=−d[A]dta.ΔH=+ ve or -veB.Rate constant of a reaction2.Vt=V0b.ΔH=−veC.Equilibrium constant3.Vt≠V0c.t→0D.Vt=V0.t2734.Increasesd.ΔH→0E.Vt=V0+V0.t2735.Decreasese.T→0

The ionization constant of NH+4 in water is 2.8×10−10 at 25∘C.The rate constant for the reaction of NH+4 and OH− to form NH3 and H2O at 25∘C is 1.4Lmol−1s−1 ,the rate constant per proton transfer from water to NH3 will be

Which of the compounds bearing different nucleophile (Y) in (a)-(d) gives the terminal/internal alkene most readily in the following reaction?

Match Column I with Column II.Column I (Element)Column II (Covalent radii in pm)a. Fp. 114b. Clq. 133c. Brr. 64d. Is. 99

~The kinematic indeterminacy of the plane structure considering the members to be inextensible is6

16 g oxygen gas expands at STP to occupy double of its original volume. The work done during the process is:

We have a cube as follows which has a sphere inside in the following two ways: Assume that the cube and sphere are identical in both cases. Is the packing fraction different in these two cases?

Induced charge q never be greater than inducing charge Q .Explain why?

1*10^-3 m solution of Pt(NH3)4Cl4 in water shows depression in freezing point by 0.0054 C. The given structure of the following compound will be (Given Kf=1.85 K/m)(1) [Pt(NH3)4]Cl4(2) [Pt(NH3)3Cl]Cl3(3) [Pt(NH3)Cl2]Cl2(4) [Pt(NH3)Cl3]Cl.

For the given scheme: The difference in molecular mass of D and B is: g/mol

How can water co exists in three different states at same temperature.?

Ionicproduct of water at 310 K is 2.7 × 10–14.What is the pH of neutral water at this temperature?

30 How polarisation of anion introduces covalent character in compound

43. Assertion: co2 has a linear structure Reason: the central atom is sp hybridised the anwer is given to be (b),but isn't the presence of sp hybridised atom the reason for any compound's linear structure?

Why Dancing resonance highly stable?

ehat is reoative atomic weight?how are they calculated

For the reduction of ketones to hydrocarbon, the appropriate agent is

CO (g) is dissolved in H2O at 25oC and 0.010 atm. Henry's law constnat for this system is 5.80×104 atm. Thus, mole fraction of CO (g) is

Match the following order of the reactions with their half-life periods

The heat of combustion of CH4(g),graphite and H2(g) are 20 kcal,-40 kcal and-10 kcal respectively. The heat of formationof methane is

The reaction of CH3MgBr with C2H5OH

Which of the following reactions will give primary amine?

Ca(OH)2+CO2⟶CaCO3+H2O percentage yield = 30%If 200 mL of N10 Ca(OH)2 is mixed with 2.2 g of CO2, then the number of moles of CaCO3 produced will be:

How much amount of CaCO3 in grams having percentage purity 50 percent produces 0.56 L of CO2 at STP on heating?

Amongst the following , the most stable complex is .

what is reaction with HNO2 acid?

Chemical formula for calcium pyrophosphate is Ca2P2O7. The formula for ferric pyrophosphate will be

Condensation polymer among the following is

38 If at certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5mm of Hg, the molality of solution is (1)0.02 (2)1.2 (3)1.11 (4)0.08 (5)0.06

Show that : i) A ∩ ( B – C) = (A ∩ B) – (A ∩ C)

In the organic compound CH2=CH−CH2−CH2–C≡CH, the pair of hydridised orbitals involved in the formation of: C2−C3 bond is: (a) sp−sp2 (b) sp−sp3 (c) sp2−sp3 (d) sp3−sp3

In FCC unit cell edge length is

On heating 0.199 g of a metallic oxide in a stream of hydrogen, 0.045 g of water is formed. Find the equivalent weight of the metal.

how many gram atoms of H and S are contained in 0.40 mole of H2S?give me complete solution

Which of the following represents an heterogenous equilibrium?

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [a0 is Bohr radius]:

34. Can Sulphur exhibit isomorphism due to catenation

Which of the following molecules has a non-polar covalent bond?

Arrange stability order in phenol, water and ethanol. Explain

On dissolving 0.25 g of a non volatile substance in 30 mL of benzene (Density of benzene 0.8 g/mL) its freezing point decreases by 0.40∘C. Calculate the molar mass of non - volatile substance (Kf=5.12 K kg mol−1)

in a hexagonal closest packing in two layers one above the other the coordeination number of each sphere wil b

What is the order of filling of electrons in molecular orbital for NO,N_2,O_2?

68 Solubility of AgCl in 0.2M NaCl is x and that in 0.1 M AgNO3 is y then which of the following is correct ? (1) x = y (2) x > y (3) x < y (4) we can not predict

WHAT WILL BE THE NAME OF THE FOLLOWING COMPOUND: CH3 | CH-CH3 |CH3 CH2 CH CH2 CH CH2 CH3 | CH2 | CH3

The conductometric titration curve for CH3COOH against NaOH can be given as

mass of naoh present in 500 cm³ of 2.5 n naoh solution