46295 + Interview Questions in Chemistry

1.	Calculate the speed of sound in oxygen from the following data. The mass of 22.4 litre of oxygen at STP (T = 273 K and p=1.0×105Nm−2) is 32 g, the molar heat capacity of oxygen at constant volume is Cv=2.5 R and that at constant pressure is Cp=3.5R.
Answer» Calculate the speed of sound in oxygen from the following data. The mass of 22.4 litre of oxygen at STP (T = 273 K and $p = 1.0 \times 10^{5} N m^{- 2})$ is 32 g, the molar heat capacity of oxygen at constant volume is $C_{v} = 2.5$ R and that at constant pressure is $C_{p} = 3.5 R$ .

Discussion

2.	A 1.2 of solution of NaCl is isotonic with 7.2 of solution of glucose. Calculate the van't Hoff's factor of NaCl solution:
Answer» A 1.2 of solution of NaCl is isotonic with 7.2 of solution of glucose. Calculate the van't Hoff's factor of NaCl solution:

Discussion

3.	Which of the following is TRUE for carbon free radical?
Answer» Which of the following is TRUE for carbon free radical?

Discussion

4.	The osmotic pressure at 17°C of an aqueous solution containing 1.75 g sucrose per 150 ml solution is
Answer» The osmotic pressure at 17°C of an aqueous solution containing 1.75 g sucrose per 150 ml solution is

Discussion

5.	Hundred ML of an aqueous solution contains 6.023 ×1021 Solute moleculesThe solution is diluted 1 L The number of solute molecules present in 10ml of dilute solution is
Answer» Hundred ML of an aqueous solution contains 6.023 $\times 10^{21}$ Solute moleculesThe solution is diluted 1 L The number of solute molecules present in 10ml of dilute solution is

Discussion

6.	Which of the following statements is/are true ? i) Density of solid gets increased due to interstitial defects ii) Frenkel defects do not alter the density of the solid iii) Non-stoichiometric defects modify the formula of the compound iv) Non-stoichiometric defects do not alter the density of the solid
Answer» Which of the following statements is/are true ? i) Density of solid gets increased due to interstitial defects ii) Frenkel defects do not alter the density of the solid iii) Non-stoichiometric defects modify the formula of the compound iv) Non-stoichiometric defects do not alter the density of the solid

Discussion

7.	On strong heating, Boric acid gives
Answer» On strong heating, Boric acid gives

Discussion

8.	In a redox reaction, oxidation number of a reductant:
Answer» In a redox reaction, oxidation number of a reductant:

Discussion

9.	Which of the following salt gives white precipitate with ammonium carbonate?
Answer» Which of the following salt gives white precipitate with ammonium carbonate?

Discussion

10.	The gas A2 in the left flask allowed to react with gas B2 present in right flask as A2(g)+B2(g)⇌2AB(g);Kc=4 at 27∘ What is the concentration of AB when equilibrium is established ?
Answer» The gas $A_{2}$ in the left flask allowed to react with gas $B_{2}$ present in right flask as $A_{2} (g) + B_{2} (g) ⇌ 2 A B (g); K_{c} = 4$ at $27^{\circ}$ What is the concentration of $A B$ when equilibrium is established ?

Discussion

11.	In the standardization of Na2S2O3 using K2Cr2O7 by iodometry, the equivalent weight of K2Cr2O7 is:
Answer» In the standardization of $N a_{2} S_{2} O_{3}$ using $K_{2} C r_{2} O_{7}$ by iodometry, the equivalent weight of $K_{2} C r_{2} O_{7}$ is:

Discussion

12.	Which of the following is an endothermic reaction
Answer» Which of the following is an endothermic reaction

Discussion

13.	Bottles containing C6H5I and C6H5CH2I lost their original labels. They are labelled as A and B. A and B were separately taken in a test tubes and boiled with NaOHsolution.Then in each test tube Dilute HNO3 and Ag NO3 was added. Substance B gave a yellow precipitate. Which one of thefollowingstatements is true for this experiment?
Answer» Bottles containing C₆H₅I and C₆H₅CH₂I lost their original labels. They are labelled as A and B. A and B were separately taken in a test tubes and boiled with NaOHsolution.Then in each test tube Dilute HNO₃ and Ag NO₃ was added. Substance B gave a yellow precipitate. Which one of thefollowingstatements is true for this experiment?

Discussion

14.	Condensation product of the benzaldehyde and acetophenone is
Answer» Condensation product of the benzaldehyde and acetophenone is

Discussion

15.	Consider the following carbonyl complex compounds. (i) Mo(CO)x (ii) Hy[Cr(CO)5] (iii) Ru3(CO)z Then calculate value of \|z+y–x\|.
Answer» Consider the following carbonyl complex compounds. (i) $M o (C O)_{x}$ (ii) $H_{y} [C r (C O)_{5}]$ (iii) $R u_{3} (C O)_{z}$ Then calculate value of $\| z + y - x \|$ .

Discussion

16.	Assertion: Polybutadiene is an example of chain growth polymer Reason: Copolymerization of butadiene and styrene gives Buna - S
Answer» Assertion: Polybutadiene is an example of chain growth polymer Reason: Copolymerization of butadiene and styrene gives Buna - S

16.

Assertion: Polybutadiene is an example of chain growth polymer Reason: Copolymerization of butadiene and styrene gives Buna - S

Answer» Assertion: Polybutadiene is an example of chain growth polymer

Reason: Copolymerization of butadiene and styrene gives Buna - S

Discussion

17.	Which of the following oxides cannot react with an excess of NaOH?
Answer» Which of the following oxides cannot react with an excess of $N a O H$ ?

Discussion

18.	The product(s) obtained in the above reaction is/are:
Answer» The product(s) obtained in the above reaction is/are:

Discussion

19.	Which of the following pairs is secondary precursors of photochemical smog –
Answer» Which of the following pairs is secondary precursors of photochemical smog –

Discussion

20.	The product(s) of the following reaction sequence is/are:
Answer» The product(s) of the following reaction sequence is/are:

Discussion

21.	If the threshold frequency of a metal for photoelectric effect is v0, then which of the following will not happen?
Answer» If the threshold frequency of a metal for photoelectric effect is $v_{0}$ , then which of the following will not happen?

Discussion

22.	The polymerization of propene is linear. Polypropene is represented by the reaction Where n has large integral value, the average enthalpies of bond dissociation for (C = C) and (C - C) at 298 K are +590 and +331 KJ mol−1 respectively. The enthalpy of polymerization is −360 KJ mol−1. Find the value of n.___
Answer» The polymerization of propene is linear. Polypropene is represented by the reaction Where n has large integral value, the average enthalpies of bond dissociation for (C = C) and (C - C) at 298 K are +590 and $+ 331 K J m o l^{- 1}$ respectively. The enthalpy of polymerization is $- 360 K J m o l^{- 1}$ . Find the value of n.___

Discussion

23.	Question 31 Isotonic solutions must have the same .......... . (a) solute (b) density (c) elevation in boiling point (d) depression in freezing point
Answer» Question 31 Isotonic solutions must have the same .......... . (a) solute (b) density (c) elevation in boiling point (d) depression in freezing point

Discussion

24.	Which of the following is the least stable conformer of cyclohexane?
Answer» Which of the following is the least stable conformer of cyclohexane?

Discussion

25.	Given N2(g)+3H2(g)→2NH3(g);ΔrHθ=−92.4 kJ mol−1 What is the standard enthalpy of formation of NH3 gas?
Answer» Given $N_{2 (g)} + 3 H_{2 (g)} \to 2 N H_{3 (g)}; Δ_{r} H^{θ} = - 92.4 k J m o l^{- 1}$ What is the standard enthalpy of formation of $N H_{3}$ gas?

Discussion

26.	Number of possible isomers for the complex [Co(en)2 Cl2]Cl will be (en = ethylenediamine)
Answer» Number of possible isomers for the complex $[C o (e n)_{2} C l_{2}] C l$ will be (en = ethylenediamine)

Discussion

27.	CH3CH2CH(CH3)OCH2CH3HCl−−→△[X]+[Y] In the above reaction, [X] and [Y] will respectively be:
Answer» $C H_{3} C H_{2} C H (C H_{3}) O C H_{2} C H_{3} H C l - - \to △ [X] + [Y]$ In the above reaction, $[X]$ and $[Y]$ will respectively be:

Discussion

28.	What will be the solubility of Cd(CN)2 in 0.05 M NaCN solution if the Ksp is 1.0×10−8 mol3 L−3? Cd(CN)2⇌Cd2++2CN−NaCN→Na++CN−
Answer» What will be the solubility of $C d (C N)_{2}$ in $0.05 M N a C N$ solution if the $K_{s p}$ is $1.0 \times 10^{- 8} {mol}^{3} L^{- 3}$ ? $C d (C N)_{2} ⇌ C d^{2 +} + 2 C N^{-} N a C N \to N a^{+} + C N^{-}$

Discussion

29.	Question 30 Which of the following statements are not correct? (a) NaCl being an ionic compound is a good conductor of electricity in the solid state (b) In canonical structure there is a difference in the arrangement of atoms (c) Hybrid orbitals form stronger bonds than pure orbitals (d) VSEPR theory can explain the square planar geometry of XeF4
Answer» Question 30 Which of the following statements are not correct? (a) NaCl being an ionic compound is a good conductor of electricity in the solid state (b) In canonical structure there is a difference in the arrangement of atoms (c) Hybrid orbitals form stronger bonds than pure orbitals (d) VSEPR theory can explain the square planar geometry of $X e F_{4}$

29.

Question 30 Which of the following statements are not correct? (a) NaCl being an ionic compound is a good conductor of electricity in the solid state (b) In canonical structure there is a difference in the arrangement of atoms (c) Hybrid orbitals form stronger bonds than pure orbitals (d) VSEPR theory can explain the square planar geometry of XeF4

Answer»

Question 30

Which of the following statements are not correct?

(a) NaCl being an ionic compound is a good conductor of electricity in the solid state

(b) In canonical structure there is a difference in the arrangement of atoms

(c) Hybrid orbitals form stronger bonds than pure orbitals

(d) VSEPR theory can explain the square planar geometry of $X e F_{4}$

Discussion

30.	What is hybridisation
Answer» What is hybridisation

Discussion

31.	Match the reactions of metal with dil HNO3 (in Column - I) with nitrogen compounds obtained by oxidation/reduction (Column - II) Column–IColumn−IIIMg + dil. HNO3PNOIIZn + dil. HNO3QH2IIICu + dil. HNO3RN2OIVPb + conc. HNO3SNO2
Answer» Match the reactions of metal with dil $H N O_{3}$ (in Column - I) with nitrogen compounds obtained by oxidation/reduction (Column - II) $\begin{matrix} C o l u m n - I & C o l u m n - I I I & M g + d i l . H N O_{3} & P & N O I I & Z n + d i l . H N O_{3} & Q & H_{2} I I I & C u + d i l . H N O_{3} & R & N_{2} O I V & P b + c o n c . H N O_{3} & S & N O_{2} \end{matrix}$

31.

Match the reactions of metal with dil HNO3 (in Column - I) with nitrogen compounds obtained by oxidation/reduction (Column - II) Column–IColumn−IIIMg + dil. HNO3PNOIIZn + dil. HNO3QH2IIICu + dil. HNO3RN2OIVPb + conc. HNO3SNO2

Answer»

Match the reactions of metal with dil $H N O_{3}$ (in Column - I) with nitrogen compounds obtained by oxidation/reduction (Column - II)

$\begin{matrix} C o l u m n - I & C o l u m n - I I I & M g + d i l . H N O_{3} & P & N O I I & Z n + d i l . H N O_{3} & Q & H_{2} I I I & C u + d i l . H N O_{3} & R & N_{2} O I V & P b + c o n c . H N O_{3} & S & N O_{2} \end{matrix}$

Discussion

32.	If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?
Answer» If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?

Discussion

33.	Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H2O)6]3+ (ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+
Answer» Amongst the following ions which one has the highest magnetic moment value? (i) $[C r (H_{2} O)_{6}]^{3 +}$ (ii) $[F e (H_{2} O)_{6}]^{2 +}$ (iii) $[Z n (H_{2} O)_{6}]^{2 +}$

33.

Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H2O)6]3+ (ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+

Answer»

Amongst the following ions which one has the highest magnetic moment value?

(i) $[C r (H_{2} O)_{6}]^{3 +}$ (ii) $[F e (H_{2} O)_{6}]^{2 +}$ (iii) $[Z n (H_{2} O)_{6}]^{2 +}$

Discussion

34.	Calculate the half-life of a first order reaction from their rate constants given below: 200 s−1 2 min−1 4 yr−1
Answer» Calculate the half-life of a first order reaction from their rate constants given below: $200 s^{- 1}$ $2 m i n^{- 1}$ $4 y r^{- 1}$

34.

Calculate the half-life of a first order reaction from their rate constants given below: 200 s−1 2 min−1 4 yr−1

Answer»

Calculate the half-life of a first order reaction from their rate constants given below:

$200 s^{- 1}$

$2 m i n^{- 1}$

$4 y r^{- 1}$

Discussion

35.	The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume. SO2Cl2(g)→SO2(g)+Cl2(g) ExperimentTime/s−1Total pressure/atm100.521000.6 Calculate the rate of the reaction when total pressure is 0.65 atm.
Answer» The following data were obtained during the first order thermal decomposition of $S O_{2} C l_{2}$ at a constant volume. $S O_{2} C l_{2} (g) \to S O_{2} (g) + C l_{2} (g)$ $\begin{matrix} E x p e r i m e n t & T i m e / s^{- 1} & T o t a l p r e s s u r e / a t m 1 & 0 & 0.5 2 & 100 & 0.6 \end{matrix}$ Calculate the rate of the reaction when total pressure is 0.65 atm.

35.

The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume. SO2Cl2(g)→SO2(g)+Cl2(g) ExperimentTime/s−1Total pressure/atm100.521000.6 Calculate the rate of the reaction when total pressure is 0.65 atm.

Answer»

The following data were obtained during the first order thermal decomposition of $S O_{2} C l_{2}$ at a constant volume.

$S O_{2} C l_{2} (g) \to S O_{2} (g) + C l_{2} (g)$

$\begin{matrix} E x p e r i m e n t & T i m e / s^{- 1} & T o t a l p r e s s u r e / a t m 1 & 0 & 0.5 2 & 100 & 0.6 \end{matrix}$

Calculate the rate of the reaction when total pressure is 0.65 atm.

Discussion

36.	The IUPAC name of vinylacetylene is?
Answer» The IUPAC name of vinylacetylene is?

Discussion

37.	For a reaction: 3A→ products It is found that the rate of reaction doubles when the concentration of A is increased by four times. What is the order of the reaction?
Answer» For a reaction: $3 A \to$ products It is found that the rate of reaction doubles when the concentration of A is increased by four times. What is the order of the reaction?

Discussion

38.	In a spontaneous nuclear reaction
Answer» In a spontaneous nuclear reaction

Discussion

39.	The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)
Answer» The value of $8.0 k m$ in inches is (1 m = 1.094 yards & 1 yard = 36 inches)

39.

The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)

Answer»

The value of $8.0 k m$ in inches is

(1 m = 1.094 yards & 1 yard = 36 inches)

Discussion

40.	Which of the following compounds is colored?
Answer» Which of the following compounds is colored?

Discussion

41.	Choose the correct order(s) of basic strengths of given amines in gaseous phase.
Answer» Choose the correct order(s) of basic strengths of given amines in gaseous phase.

Discussion

42.	FN3 is one of the most explosive and thermally unstable covalent azide known. HN3+F2low−−−−−→pressureFN3 Find the maximum number of atoms in one plane in FN3 ___
Answer» $F N_{3}$ is one of the most explosive and thermally unstable covalent azide known. $H N_{3} + F_{2} l o w - ---- \to p r e s s u r e F N_{3}$ Find the maximum number of atoms in one plane in $F N_{3}$ ___

Discussion

43.	The stability of given free radicals in decreasing order is 1) CH3−˙CH22) CH3−C˙H−CH33) CH3−˙C−CH3 \| CH34) C˙H3
Answer» The stability of given free radicals in decreasing order is $1) C H_{3} - ˙ C H_{2} 2) C H_{3} - C ˙ H - C H_{3} 3) C H_{3} - ˙ C - C H_{3} \| C H_{3} 4) C_{3}$

43.

The stability of given free radicals in decreasing order is 1) CH3−˙CH22) CH3−C˙H−CH33) CH3−˙C−CH3 | CH34) C˙H3

Answer»

The stability of given free radicals in decreasing order is

$1) C H_{3} - ˙ C H_{2} 2) C H_{3} - C ˙ H - C H_{3} 3) C H_{3} - ˙ C - C H_{3} | C H_{3} 4) C_{3}$

Discussion

44.	The difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25 ∘C in kJ is : A(g)+3B(g)→C(g)
Answer» The difference between heat of reaction at constant pressure and constant volume for the reaction given below at $25^{\circ} C$ in $k J$ is : $A (g) + 3 B (g) \to C (g)$

Discussion

45.	What will be the volume of CO2 at NTP obtained on heating 10 grams of (90% pure) limestone?
Answer» What will be the volume of $C O_{2}$ at NTP obtained on heating 10 grams of (90% pure) limestone?

Discussion

46.	In carbylamine reaction, primary amines react with alkaline CHCl3 and the final product is a carbylamine. From start to finish, how many instances of dehydrochlorination takes place?
Answer» In carbylamine reaction, primary amines react with alkaline $C H C l_{3}$ and the final product is a carbylamine. From start to finish, how many instances of dehydrochlorination takes place?

Discussion

47.	Calculate amount of NH4Cl (in g) required to be dissolved in 500 mL of water to have pH=4.5[Kb NH4OH=1.8×10−5]. (Given 10−4.5=3.162×10−5)
Answer» Calculate amount of $N H_{4} C l$ (in $g$ ) required to be dissolved in $500 m L$ of water to have $p H = 4.5 [K_{b} N H_{4} O H = 1.8 \times 10^{- 5}] .$ (Given $10^{- 4.5} = 3.162 \times 10^{- 5}$ )

Discussion

48.	Energy of an electron is given by E=−2.178×10−18J(Z2n2) wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h=6.62×10−34 J s and c=3.0×108m s−1)
Answer» Energy of an electron is given by $E = - 2.178 \times 10^{- 18} J (\frac{Z^{2}}{n^{2}})$ wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be $(h = 6.62 \times 10^{- 34} J s a n d c = 3.0 \times 10^{8} m s^{- 1})$

Discussion

49.	A sample of water gas has a composition by volume of 50% H2, 45% CO and 5% CO2. Calculate the volume in litres at STP at which the water gas on treatment with excess of steam will produce 5 L of H2. The equation for the reaction is: CO+H2O→CO2+H2
Answer» A sample of water gas has a composition by volume of 50% $H_{2}$ , 45% $C O$ and 5% $C O_{2}$ . Calculate the volume in litres at STP at which the water gas on treatment with excess of steam will produce 5 L of $H_{2}$ . The equation for the reaction is: $C O + H_{2} O \to C O_{2} + H_{2}$

Discussion

50.	Propylene ===========>. Polypropylene.which of the following (polymerisation) Are produced at low pressures and have comparatively high melting point? a) atactic only. B)atactic and syndiotactic C)atactic and isotactic d)syndiotactic and isotactic
Answer» Propylene ===========>. Polypropylene.which of the following (polymerisation) Are produced at low pressures and have comparatively high melting point? a) atactic only. B)atactic and syndiotactic C)atactic and isotactic d)syndiotactic and isotactic

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Calculate the speed of sound in oxygen from the following data. The mass of 22.4 litre of oxygen at STP (T = 273 K and p=1.0×105Nm−2) is 32 g, the molar heat capacity of oxygen at constant volume is Cv=2.5 R and that at constant pressure is Cp=3.5R.

A 1.2 of solution of NaCl is isotonic with 7.2 of solution of glucose. Calculate the van't Hoff's factor of NaCl solution:

Which of the following is TRUE for carbon free radical?

The osmotic pressure at 17°C of an aqueous solution containing 1.75 g sucrose per 150 ml solution is

Hundred ML of an aqueous solution contains 6.023 ×1021 Solute moleculesThe solution is diluted 1 L The number of solute molecules present in 10ml of dilute solution is

On strong heating, Boric acid gives

In a redox reaction, oxidation number of a reductant:

Which of the following salt gives white precipitate with ammonium carbonate?

The gas A2 in the left flask allowed to react with gas B2 present in right flask as A2(g)+B2(g)⇌2AB(g);Kc=4 at 27∘ What is the concentration of AB when equilibrium is established ?

In the standardization of Na2S2O3 using K2Cr2O7 by iodometry, the equivalent weight of K2Cr2O7 is:

Which of the following is an endothermic reaction

Condensation product of the benzaldehyde and acetophenone is

Consider the following carbonyl complex compounds. (i) Mo(CO)x (ii) Hy[Cr(CO)5] (iii) Ru3(CO)z Then calculate value of |z+y–x|.

Assertion: Polybutadiene is an example of chain growth polymer Reason: Copolymerization of butadiene and styrene gives Buna - S

Which of the following oxides cannot react with an excess of NaOH?

The product(s) obtained in the above reaction is/are:

Which of the following pairs is secondary precursors of photochemical smog –

The product(s) of the following reaction sequence is/are:

If the threshold frequency of a metal for photoelectric effect is v0, then which of the following will not happen?

Question 31 Isotonic solutions must have the same .......... . (a) solute (b) density (c) elevation in boiling point (d) depression in freezing point

Which of the following is the least stable conformer of cyclohexane?

Given N2(g)+3H2(g)→2NH3(g);ΔrHθ=−92.4 kJ mol−1 What is the standard enthalpy of formation of NH3 gas?

Number of possible isomers for the complex [Co(en)2 Cl2]Cl will be (en = ethylenediamine)

CH3CH2CH(CH3)OCH2CH3HCl−−→△[X]+[Y] In the above reaction, [X] and [Y] will respectively be:

What will be the solubility of Cd(CN)2 in 0.05 M NaCN solution if the Ksp is 1.0×10−8 mol3 L−3? Cd(CN)2⇌Cd2++2CN−NaCN→Na++CN−

What is hybridisation

Match the reactions of metal with dil HNO3 (in Column - I) with nitrogen compounds obtained by oxidation/reduction (Column - II) Column–IColumn−IIIMg + dil. HNO3PNOIIZn + dil. HNO3QH2IIICu + dil. HNO3RN2OIVPb + conc. HNO3SNO2

If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?

Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H2O)6]3+ (ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+

Calculate the half-life of a first order reaction from their rate constants given below: 200 s−1 2 min−1 4 yr−1

The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume. SO2Cl2(g)→SO2(g)+Cl2(g) ExperimentTime/s−1Total pressure/atm100.521000.6 Calculate the rate of the reaction when total pressure is 0.65 atm.

The IUPAC name of vinylacetylene is?

For a reaction: 3A→ products It is found that the rate of reaction doubles when the concentration of A is increased by four times. What is the order of the reaction?

In a spontaneous nuclear reaction

The value of 8.0 km in inches is (1 m = 1.094 yards &amp; 1 yard = 36 inches)

Which of the following compounds is colored?

Choose the correct order(s) of basic strengths of given amines in gaseous phase.

FN3 is one of the most explosive and thermally unstable covalent azide known. HN3+F2low−−−−−→pressureFN3 Find the maximum number of atoms in one plane in FN3 ___

The stability of given free radicals in decreasing order is 1) CH3−˙CH22) CH3−C˙H−CH33) CH3−˙C−CH3 | CH34) C˙H3

The difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25 ∘C in kJ is : A(g)+3B(g)→C(g)

What will be the volume of CO2 at NTP obtained on heating 10 grams of (90% pure) limestone?

In carbylamine reaction, primary amines react with alkaline CHCl3 and the final product is a carbylamine. From start to finish, how many instances of dehydrochlorination takes place?

Calculate amount of NH4Cl (in g) required to be dissolved in 500 mL of water to have pH=4.5[Kb NH4OH=1.8×10−5]. (Given 10−4.5=3.162×10−5)

Energy of an electron is given by E=−2.178×10−18J(Z2n2) wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h=6.62×10−34 J s and c=3.0×108m s−1)

A sample of water gas has a composition by volume of 50% H2, 45% CO and 5% CO2. Calculate the volume in litres at STP at which the water gas on treatment with excess of steam will produce 5 L of H2. The equation for the reaction is: CO+H2O→CO2+H2

Propylene ===========>. Polypropylene.which of the following (polymerisation) Are produced at low pressures and have comparatively high melting point? a) atactic only. B)atactic and syndiotactic C)atactic and isotactic d)syndiotactic and isotactic

The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)