15280 + Interview Questions in Chemistry Page 168 InterviewSolution

8351.	What happens to the solubility of a saturated solution of NaCl, when a current of HCl gas is passed through it?
Answer» What happens to the solubility of a saturated solution of NaCl, when a current of HCl gas is passed through it?

Discussion

8352.	does two metals react with each other
Answer» does two metals react with each other

Discussion

8353.	11. How many grams of Cl2 gas will be obtained by the complete reaction of 31.6 gm of KMnO4 with HCl ? A 35.5 B 71 C 17.75 D 142
Answer» 11. How many grams of Cl2 gas will be obtained by the complete reaction of 31.6 gm of KMnO4 with HCl ? A 35.5 B 71 C 17.75 D 142

Discussion

8354.	Question 3Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?(i) Good thermal conductivity(ii) Good electrical conductivity(iii) Ductility(iv) High melting point(a) (i) and (ii) (b) (i) and (iii)(c) (ii) and (iii) (d) (i) and (iv)
Answer» Question 3 Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? (i) Good thermal conductivity (ii) Good electrical conductivity (iii) Ductility (iv) High melting point (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (i) and (iv)

8354.

Question 3Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?(i) Good thermal conductivity(ii) Good electrical conductivity(iii) Ductility(iv) High melting point(a) (i) and (ii) (b) (i) and (iii)(c) (ii) and (iii) (d) (i) and (iv)

Answer»

Question 3

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point

(a) (i) and (ii) (b) (i) and (iii)

(c) (ii) and (iii) (d) (i) and (iv)

Discussion

8355.	Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused sunlight forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present in it.
Answer» Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused sunlight forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present in it.

Discussion

8356.	Why Instead of having More EN (slightly more) of H , In PH3 the ox. No. Of P is -3?
Answer» Why Instead of having More EN (slightly more) of H , In PH3 the ox. No. Of P is -3?

Discussion

8357.	24. Find the pH of the solution formed by addition of 3.65g of HCL and 40g of NaOH.
Answer» 24. Find the pH of the solution formed by addition of 3.65g of HCL and 40g of NaOH.

Discussion

8358.	Find the molality of 10% (mass/volume) solution of H2SO4 of density 1.1 g/cm3 is approx.
Answer» Find the molality of 10% (mass/volume) solution of H2SO4 of density 1.1 g/cm3 is approx.

Discussion

8359.	The density of solid argon is 1.65 g/mL at −233∘C. If the argon atom is assumed to be sphere of radius 1.54×10−8 cm, what percentage of solid argon is apparently empty space ?Give your answer in the nearest integer value.(Atomic weight of Ar=40 u,π=227, NA=6×1023)
Answer» The density of solid argon is $1.65 g/mL at - 233^{\circ} C$ . If the argon atom is assumed to be sphere of radius $1.54 \times 10^{- 8} cm$ , what percentage of solid argon is apparently empty space ? Give your answer in the nearest integer value. $(Atomic weight of Ar = 40 u, π = \frac{22}{7}, N_{A} = 6 \times 10^{23})$

Discussion

8360.	Which of the following set of quantum numbers is correct for an electron in 6f orbital?
Answer» Which of the following set of quantum numbers is correct for an electron in 6f orbital?

Discussion

8361.	Which of the following is/are true in case of molecules?
Answer» Which of the following is/are true in case of molecules?

Discussion

8362.	Name the following:(a) Products obtained by dissolving sulphur dioxide and chlorine in water.(b) The catalyst used in the contact process.(c) Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.(d) Products obtained by treating zinc with dilute sulphuric acid.(e) Products obtained by treating ferrous sulphide with dilute sulphuric acid.(f) The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.(g) The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.(h) Gases obtained by treating carbon with hot concentrated sulphuric acid.(i) The property used to prepare HCl and HNO3 from H2SO4.
Answer» Name the following: (a) Products obtained by dissolving sulphur dioxide and chlorine in water. (b) The catalyst used in the contact process. (c) Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid. (d) Products obtained by treating zinc with dilute sulphuric acid. (e) Products obtained by treating ferrous sulphide with dilute sulphuric acid. (f) The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid. (g) The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid. (h) Gases obtained by treating carbon with hot concentrated sulphuric acid. (i) The property used to prepare HCl and HNO₃ from H₂SO₄.

Discussion

8363.	The % of N in urea is:
Answer» The $%$ of N in urea is:

Discussion

8364.	Salt dissolves in water to form salt water. Identify the solvent.
Answer» Salt dissolves in water to form salt water. Identify the solvent.

Discussion

8365.	13. 0.2g of a gas X occupies a volume of 0.44L at given pressure and temperature. Under identical conditions of P and T, 0.1g of CO2 Gas occupies 0.32L. The gas X can be?
Answer» 13. 0.2g of a gas X occupies a volume of 0.44L at given pressure and temperature. Under identical conditions of P and T, 0.1g of CO2 Gas occupies 0.32L. The gas X can be?

Discussion

8366.	What will happen to PH valve when we add some water to acid or base?
Answer» What will happen to PH valve when we add some water to acid or base?

Discussion

8367.	The ammonia evolved from 2g of a compound in Kjeldahl's estimation of nitrogen neutralizes 10 mL of 2 M H2SO4 solution. The weight percentage of nitrogen in the compound is
Answer» The ammonia evolved from 2g of a compound in Kjeldahl's estimation of nitrogen neutralizes 10 mL of 2 M $H_{2} S O_{4}$ solution. The weight percentage of nitrogen in the compound is

Discussion

8368.	Why BeCl2 is a covalent compound though there is much difference of electronegativity between the two atoms ?
Answer» Why BeCl2 is a covalent compound though there is much difference of electronegativity between the two atoms ?

Discussion

8369.	Choose the correct optiom When a metal atom becomes an ion 1)it loses electrons and it is oxidised 2)it gains electrons and it's reduced 3)it loses electrons and it's reduced 4)it gains electrons and it's oxidised
Answer» Choose the correct optiom When a metal atom becomes an ion 1)it loses electrons and it is oxidised 2)it gains electrons and it's reduced 3)it loses electrons and it's reduced 4)it gains electrons and it's oxidised

8369.

Choose the correct optiom When a metal atom becomes an ion 1)it loses electrons and it is oxidised 2)it gains electrons and it's reduced 3)it loses electrons and it's reduced 4)it gains electrons and it's oxidised

Answer»

Choose the correct optiom

When a metal atom becomes an ion

1)it loses electrons and it is oxidised

2)it gains electrons and it's reduced

3)it loses electrons and it's reduced

4)it gains electrons and it's oxidised

Discussion

8370.	A billiard ball at rest is struck horizontally one tenth of the diameter below the top. If P be the impulse of the blow find the initial kinetic energy of the ball, the mass of the ball is being M.
Answer» A billiard ball at rest is struck horizontally one tenth of the diameter below the top. If P be the impulse of the blow find the initial kinetic energy of the ball, the mass of the ball is being M.

Discussion

8371.

(i) How would you distinguish between Zn2+ and Pb2+ ions, using ammonium hydroxide solution?(ii) Copy and complete the following table which refers to the action of heat on some carbonates: Carbonate Colour of residue on cooling Zinc carbonate Lead carbonate Copper carbonate

Answer» (i) How would you distinguish between Zn²⁺ and Pb²⁺ ions, using ammonium hydroxide solution?

(ii) Copy and complete the following table which refers to the action of heat on some carbonates:

Carbonate	Colour of residue on cooling
Zinc carbonate
Lead carbonate
Copper carbonate

Discussion

8372.	Which one of the following has the highest dipole moment and why?A. AsH3B. SbH3C. PH3D. NH3
Answer» Which one of the following has the highest dipole moment and why? A. AsH3 B. SbH3 C. PH3 D. NH3

Discussion

8373.	Hydrogen has three isotopes written as:H11, H12, H13Explain Why:(a) These isotopes have almost identical chemical properties.(b) They are electrically neutral.
Answer» Hydrogen has three isotopes written as: ${}_{1}^{1}H, {}_{1}^{2}H, {}_{1}^{3}H$ Explain Why: (a) These isotopes have almost identical chemical properties. (b) They are electrically neutral.

Discussion

8374.	Which one of the following gases is the major constituent of biogas? Carbon monoxide, Hydrogen, Methane, Carbon dioxide
Answer» Which one of the following gases is the major constituent of biogas? Carbon monoxide, Hydrogen, Methane, Carbon dioxide

Discussion

8375.	A gaseous mixture contains oxygen and other unknown gas in molar ratio 4:1 diffuses through a porous plugin 245 sec. under similar condition , same volume of oxygen takes 220 sec to diffuse . Find the molecular mass of unknown gas.
Answer» A gaseous mixture contains oxygen and other unknown gas in molar ratio 4:1 diffuses through a porous plugin 245 sec. under similar condition , same volume of oxygen takes 220 sec to diffuse . Find the molecular mass of unknown gas.

Discussion

8376.	12. Fluorination reaction of alkanes is violent in nature while chlorination and bromination proceed smoothly. - WHY?
Answer» 12. Fluorination reaction of alkanes is violent in nature while chlorination and bromination proceed smoothly. - WHY?

Discussion

8377.	How can we identify which element is in group and period?
Answer» How can we identify which element is in group and period?

Discussion

8378.	if an electron jumps from an orbit in which its energy is -0.5eV to one in which its energy is -4eV then it must emit or absorb photon
Answer» if an electron jumps from an orbit in which its energy is -0.5eV to one in which its energy is -4eV then it must emit or absorb photon

Discussion

8379.	The type of chemical bond formed by the sharing of electrons, contributed by one of the atoms only.?
Answer» The type of chemical bond formed by the sharing of electrons, contributed by one of the atoms only.?

Discussion

8380.	Which of the following falls in the area represented by the question mark?
Answer» Which of the following falls in the area represented by the question mark?

8380.

Which of the following falls in the area represented by the question mark?

Answer»

Which of the following falls in the area represented by the question mark?

Discussion

8381.	1 (a)State one advantage and one disadvantage of corrosion. (b) State the various methods for preventing rancidity of food.
Answer» 1 (a)State one advantage and one disadvantage of corrosion. (b) State the various methods for preventing rancidity of food.

8381.

1 (a)State one advantage and one disadvantage of corrosion. (b) State the various methods for preventing rancidity of food.

Answer»

1 (a)State one advantage and one disadvantage of corrosion.

(b) State the various methods for preventing rancidity of food.

Discussion

8382.	Which of the following form 'acid salt' with the base? HF HCl HBr HI
Answer» Which of the following form 'acid salt' with the base? HF HCl HBr HI

8382.

Which of the following form 'acid salt' with the base? HF HCl HBr HI

Answer»

Which of the following form 'acid salt' with the base?

HF
HCl
HBr
HI

Discussion

8383.	Why alkali and alkaline earth metals in cationic form are not electrophile while other cations are electrophile?
Answer» Why alkali and alkaline earth metals in cationic form are not electrophile while other cations are electrophile?

Discussion

8384.	isothermal process?
Answer» isothermal process?

Discussion

8385.	Writebalanced equations for the following:(i) NaCl is heated with sulphuric acid inthe presence of MnO2.(ii) Chlorine gas is passed into a solutionof NaI in water.
Answer» Write balanced equations for the following: (i) NaCl is heated with sulphuric acid in the presence of MnO₂. (ii) Chlorine gas is passed into a solution of NaI in water.

8385.

Writebalanced equations for the following:(i) NaCl is heated with sulphuric acid inthe presence of MnO2.(ii) Chlorine gas is passed into a solutionof NaI in water.

Answer»

Write
balanced equations for the following:

(i)
NaCl is heated with sulphuric acid in
the presence of MnO₂.

(ii)
Chlorine gas is passed into a solution
of NaI in water.

Discussion

8386.	Subscriptions received during the year ended March 31st, 2006 by King Club were as under: 2004−05 Rs 3,0002005−06 Rs 93,0002006−07 Rs 2,000 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯Rs 98,000––––––––––– The Club has 500 members each paying Rs 200 as annual subscription. Subscriptions outstanding as on March 31st, 2005 were Rs 8,000. Calculate the amount of subscriptions to be shown as income in the Income and Expenditure Account for the year ended March 31st, 2006 and show the relevant data in the Balance Sheet as on 31st March, 2005 and 2006.
Answer» Subscriptions received during the year ended March 31st, 2006 by King Club were as under: $\begin{matrix} 2004 - 05 Rs 3, 000 2005 - 06 Rs 93, 000 2006 - 07 Rs 2, 000 ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ Rs 98, 000 - --------- - \end{matrix}$ The Club has 500 members each paying Rs 200 as annual subscription. Subscriptions outstanding as on March 31st, 2005 were Rs 8,000. Calculate the amount of subscriptions to be shown as income in the Income and Expenditure Account for the year ended March 31st, 2006 and show the relevant data in the Balance Sheet as on 31st March, 2005 and 2006.

8386.

Subscriptions received during the year ended March 31st, 2006 by King Club were as under: 2004−05 Rs 3,0002005−06 Rs 93,0002006−07 Rs 2,000 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯Rs 98,000––––––––––– The Club has 500 members each paying Rs 200 as annual subscription. Subscriptions outstanding as on March 31st, 2005 were Rs 8,000. Calculate the amount of subscriptions to be shown as income in the Income and Expenditure Account for the year ended March 31st, 2006 and show the relevant data in the Balance Sheet as on 31st March, 2005 and 2006.

Answer»

Subscriptions received during the year ended March 31st, 2006 by King Club were as under:

$\begin{matrix} 2004 - 05 Rs 3, 000 2005 - 06 Rs 93, 000 2006 - 07 Rs 2, 000 ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ Rs 98, 000 - --------- - \end{matrix}$

The Club has 500 members each paying Rs 200 as annual subscription. Subscriptions outstanding as on March 31st, 2005 were Rs 8,000. Calculate the amount of subscriptions to be shown as income in the Income and Expenditure Account for the year ended March 31st, 2006 and show the relevant data in the Balance Sheet as on 31st March, 2005 and 2006.

Discussion

8387.	what is the need and applicability of vant hoff factor ?
Answer» what is the need and applicability of vant hoff factor ?

Discussion

8388.	15. Max. No. Of molecules present in? 1) 15L of H2O liquid at stp 2) 15L of H2O gas at STP 3) 15g of ice 4)same in all
Answer» 15. Max. No. Of molecules present in? 1) 15L of H2O liquid at stp 2) 15L of H2O gas at STP 3) 15g of ice 4)same in all

Discussion

8389.	A metal M in nature find as sulphide ore is one of th good conductor of heat and electricity and is used in making electric wire . A . Identify metal B . Write balance equation involved in the process of extraction of metal. C . Name the metal which not react with cold H2O and hot H20.
Answer» A metal M in nature find as sulphide ore is one of th good conductor of heat and electricity and is used in making electric wire . A . Identify metal B . Write balance equation involved in the process of extraction of metal. C . Name the metal which not react with cold H2O and hot H20.

Discussion

8390.	Why hydrogen was not involved in Newlands law of octaves?Is hydrogen an inert gas?
Answer» Why hydrogen was not involved in Newlands law of octaves? Is hydrogen an inert gas?

Discussion

8391.	Arrange the following C-C bonds according to their reactivity. (The topmost one being the least reactive)
Answer» Arrange the following C-C bonds according to their reactivity. (The topmost one being the least reactive)

Discussion

8392.	Ammonium nitrate on being heated
Answer» Ammonium nitrate on being heated

Discussion

8393.	28. depression in freezing point 0.01m aquos solution of acetic aid is found to be 0.02046K. 1m urea solution freezed at -186 degree celsius assume molarity = molality pH f solution is?
Answer» 28. depression in freezing point 0.01m aquos solution of acetic aid is found to be 0.02046K. 1m urea solution freezed at -186 degree celsius assume molarity = molality pH f solution is?

Discussion

8394.	What are the atomicities of following elements: Potassium Manganese Bromine Mercury Barium
Answer» What are the atomicities of following elements: Potassium Manganese Bromine Mercury Barium

8394.

What are the atomicities of following elements: Potassium Manganese Bromine Mercury Barium

Answer»

What are the atomicities of following elements:

Potassium

Manganese

Bromine

Mercury

Barium

Discussion

8395.	11 Why lithium is most reducing agent ?
Answer» 11 Why lithium is most reducing agent ?

Discussion

8396.	Which ionic bond is stronger Licl or bacl2In this lithium has small size but at same time barium has 2+ charge So in this case also charge will win
Answer» Which ionic bond is stronger Licl or bacl2 In this lithium has small size but at same time barium has 2+ charge So in this case also charge will win

Discussion

8397.	26. Why there is exception while writing the electronic configuration of copper atomic number 29
Answer» 26. Why there is exception while writing the electronic configuration of copper atomic number 29

Discussion

8398.	Give the equation for the preparation of each of the following salts from the starting material given.(i) Copper sulphate from copper (II) oxide,(ii) Iron (III) chloride from Iron.(iii) Potassium sulphate from potassium hydroxide solution.(iv) Lead chloride from lead carbonate (two equations).
Answer» Give the equation for the preparation of each of the following salts from the starting material given. (i) Copper sulphate from copper (II) oxide, (ii) Iron (III) chloride from Iron. (iii) Potassium sulphate from potassium hydroxide solution. (iv) Lead chloride from lead carbonate (two equations).

Discussion

8399.	Thermal decomposition of HNO3 releases yellow-brown coloured fumes due to the formation of gas.
Answer» Thermal decomposition of $H N O_{3}$ releases yellow-brown coloured fumes due to the formation of gas.

Discussion

8400.	In hydrogen atom energy of first excited state is -3.4 eV. Then find out KE of same orbit of hydrogen atom.
Answer» In hydrogen atom energy of first excited state is -3.4 eV. Then find out KE of same orbit of hydrogen atom.

Discussion

Explore topic-wise InterviewSolutions in .

What happens to the solubility of a saturated solution of NaCl, when a current of HCl gas is passed through it?

does two metals react with each other

11. How many grams of Cl2 gas will be obtained by the complete reaction of 31.6 gm of KMnO4 with HCl ? A 35.5 B 71 C 17.75 D 142

Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused sunlight forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present in it.

Why Instead of having More EN (slightly more) of H , In PH3 the ox. No. Of P is -3?

24. Find the pH of the solution formed by addition of 3.65g of HCL and 40g of NaOH.

Find the molality of 10% (mass/volume) solution of H2SO4 of density 1.1 g/cm3 is approx.

The density of solid argon is 1.65 g/mL at −233∘C. If the argon atom is assumed to be sphere of radius 1.54×10−8 cm, what percentage of solid argon is apparently empty space ?Give your answer in the nearest integer value.(Atomic weight of Ar=40 u,π=227, NA=6×1023)

Which of the following set of quantum numbers is correct for an electron in 6f orbital?

Which of the following is/are true in case of molecules?

The % of N in urea is:

Salt dissolves in water to form salt water. Identify the solvent.

13. 0.2g of a gas X occupies a volume of 0.44L at given pressure and temperature. Under identical conditions of P and T, 0.1g of CO2 Gas occupies 0.32L. The gas X can be?

What will happen to PH valve when we add some water to acid or base?

The ammonia evolved from 2g of a compound in Kjeldahl's estimation of nitrogen neutralizes 10 mL of 2 M H2SO4 solution. The weight percentage of nitrogen in the compound is

Why BeCl2 is a covalent compound though there is much difference of electronegativity between the two atoms ?

Choose the correct optiom When a metal atom becomes an ion 1)it loses electrons and it is oxidised 2)it gains electrons and it's reduced 3)it loses electrons and it's reduced 4)it gains electrons and it's oxidised

A billiard ball at rest is struck horizontally one tenth of the diameter below the top. If P be the impulse of the blow find the initial kinetic energy of the ball, the mass of the ball is being M.

(i) How would you distinguish between Zn2+ and Pb2+ ions, using ammonium hydroxide solution?(ii) Copy and complete the following table which refers to the action of heat on some carbonates: Carbonate Colour of residue on cooling Zinc carbonate Lead carbonate Copper carbonate

Which one of the following has the highest dipole moment and why?A. AsH3B. SbH3C. PH3D. NH3

Hydrogen has three isotopes written as:H11, H12, H13Explain Why:(a) These isotopes have almost identical chemical properties.(b) They are electrically neutral.

Which one of the following gases is the major constituent of biogas? Carbon monoxide, Hydrogen, Methane, Carbon dioxide

A gaseous mixture contains oxygen and other unknown gas in molar ratio 4:1 diffuses through a porous plugin 245 sec. under similar condition , same volume of oxygen takes 220 sec to diffuse . Find the molecular mass of unknown gas.

12. Fluorination reaction of alkanes is violent in nature while chlorination and bromination proceed smoothly. - WHY?

How can we identify which element is in group and period?

if an electron jumps from an orbit in which its energy is -0.5eV to one in which its energy is -4eV then it must emit or absorb photon

The type of chemical bond formed by the sharing of electrons, contributed by one of the atoms only.?

Which of the following falls in the area represented by the question mark?

1 (a)State one advantage and one disadvantage of corrosion. (b) State the various methods for preventing rancidity of food.

Which of the following form 'acid salt' with the base? HF HCl HBr HI

Why alkali and alkaline earth metals in cationic form are not electrophile while other cations are electrophile?

isothermal process?

Writebalanced equations for the following:(i) NaCl is heated with sulphuric acid inthe presence of MnO2.(ii) Chlorine gas is passed into a solutionof NaI in water.

what is the need and applicability of vant hoff factor ?

15. Max. No. Of molecules present in? 1) 15L of H2O liquid at stp 2) 15L of H2O gas at STP 3) 15g of ice 4)same in all

A metal M in nature find as sulphide ore is one of th good conductor of heat and electricity and is used in making electric wire . A . Identify metal B . Write balance equation involved in the process of extraction of metal. C . Name the metal which not react with cold H2O and hot H20.

Why hydrogen was not involved in Newlands law of octaves?Is hydrogen an inert gas?

Arrange the following C-C bonds according to their reactivity. (The topmost one being the least reactive)

Ammonium nitrate on being heated

28. depression in freezing point 0.01m aquos solution of acetic aid is found to be 0.02046K. 1m urea solution freezed at -186 degree celsius assume molarity = molality pH f solution is?

What are the atomicities of following elements: Potassium Manganese Bromine Mercury Barium

11 Why lithium is most reducing agent ?

Which ionic bond is stronger Licl or bacl2In this lithium has small size but at same time barium has 2+ charge So in this case also charge will win

26. Why there is exception while writing the electronic configuration of copper atomic number 29

Give the equation for the preparation of each of the following salts from the starting material given.(i) Copper sulphate from copper (II) oxide,(ii) Iron (III) chloride from Iron.(iii) Potassium sulphate from potassium hydroxide solution.(iv) Lead chloride from lead carbonate (two equations).

Thermal decomposition of HNO3 releases yellow-brown coloured fumes due to the formation of gas.

In hydrogen atom energy of first excited state is -3.4 eV. Then find out KE of same orbit of hydrogen atom.