15280 + Interview Questions in Chemistry Page 87 InterviewSolution

4301.	Write balanced equation for the preparation of ammonia from ammonium chloride.
Answer» Write balanced equation for the preparation of ammonia from ammonium chloride.

Discussion

4302.	43.For a certain process , pressure of diatomic gas varies according to the relation P= aV2( v has power 2), where a is constant . what is the molar heat capacity of the gas for this process?
Answer» 43.For a certain process , pressure of diatomic gas varies according to the relation P= aV2( v has power 2), where a is constant . what is the molar heat capacity of the gas for this process?

Discussion

4303.	The products obtained when 2-methylpropene is oxidised with hot conc. acidic KMnO4 are .
Answer» The products obtained when 2-methylpropene is oxidised with hot conc. acidic $K M n O_{4}$ are .

Discussion

4304.	When Zn converts from melted state to its solid state, it has hcp structure, then find the number of nearest atoms.
Answer» When $Z n$ converts from melted state to its solid state, it has hcp structure, then find the number of nearest atoms.

Discussion

4305.	y=ex.logx.sinx
Answer» y=ex.logx.sinx

Discussion

4306.	We know that h +ion when added to h2o gives us hydronium ion (h3o) + where h+ ion joins itself to one of the lone pair of h20 molecule but, Can another h+ ion would form a dative bond to a remaining lone pair in h2o to form (h4o)2+ ion???
Answer» We know that h +ion when added to h2o gives us hydronium ion (h3o) + where h+ ion joins itself to one of the lone pair of h20 molecule but, Can another h+ ion would form a dative bond to a remaining lone pair in h2o to form (h4o)2+ ion???

4306.

We know that h +ion when added to h2o gives us hydronium ion (h3o) + where h+ ion joins itself to one of the lone pair of h20 molecule but, Can another h+ ion would form a dative bond to a remaining lone pair in h2o to form (h4o)2+ ion???

Answer»

We know that h +ion when added to h2o gives us hydronium ion (h3o) + where h+ ion joins itself to one of the lone pair of h20 molecule but,

Can another h+ ion would form a dative bond to a remaining lone pair in h2o to form (h4o)2+ ion???

Discussion

4307.	Why some of the alpha particles get deflected and why some particles goes straight in Rutherford atomic model
Answer» Why some of the alpha particles get deflected and why some particles goes straight in Rutherford atomic model

Discussion

4308.	Question 30.Identify the correct representation of reaction occurring during chloralkali process.(a) 2NaCl(l)+2H2O(l)→2NaOH(l)+Cl2(g)+H2(g)(b) 2NaCl(aq)+2H2O(aq)→2NaOH(aq)+Cl2(g)+H2(g)(c) 2NaCl(aq)+2H2O(l)→2NaOH(aq)+Cl2(aq)+H2(aq)(d) 2NaCl(aq)+2H2O(l)→2NaOH(aq)+Cl2(g)+H2(g)
Answer» Question 30. Identify the correct representation of reaction occurring during chloralkali process. (a) $2 NaCl(l) + 2 H_{2} O(l) \to 2 NaOH(l) + {Cl}_{2} (g) + H_{2} (g)$ (b) $2 NaCl(aq) + 2 H_{2} O(aq) \to 2 NaOH(aq) + {Cl}_{2} (g) + H_{2} (g)$ (c) $2 NaCl(aq) + 2 H_{2} O(l) \to 2 NaOH(aq) + {Cl}_{2} (aq) + H_{2} (aq)$ (d) $2 NaCl(aq) + 2 H_{2} O(l) \to 2 NaOH(aq) + {Cl}_{2} (g) + H_{2} (g)$

Discussion

4309.	Which matching seems to be correct?
Answer» Which matching seems to be correct?

4309.

Which matching seems to be correct?

Answer»

Which matching seems to be correct?

Discussion

4310.	Solution 'A' gives a white sulphide precipitate with group IV reagent. Its precipitate dissolves in dil.HCl to give solution 'B'. A bluish white precipitate appears when potassium ferrocyanide (K4Fe(CN)6) solution is added to the solution 'B' after neutralisation by NH4OH solution. The cation present in solution 'A' is
Answer» Solution 'A' gives a white sulphide precipitate with group IV reagent. Its precipitate dissolves in dil.HCl to give solution 'B'. A bluish white precipitate appears when potassium ferrocyanide $(K_{4} F e (C N)_{6})$ solution is added to the solution 'B' after neutralisation by $N H_{4} O H$ solution. The cation present in solution 'A' is

Discussion

4311.	Translate the following statements into chemical equations and then balance them.(1) When steam is passed over aluminium.(2) Extraction of copper from its sulphide ore.(3) Thermit reaction.(4) When magnesium reacts with hot water.(5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.
Answer» Translate the following statements into chemical equations and then balance them. (1) When steam is passed over aluminium. (2) Extraction of copper from its sulphide ore. (3) Thermit reaction. (4) When magnesium reacts with hot water. (5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.

4311.

Translate the following statements into chemical equations and then balance them.(1) When steam is passed over aluminium.(2) Extraction of copper from its sulphide ore.(3) Thermit reaction.(4) When magnesium reacts with hot water.(5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.

Answer»

Translate the following statements into chemical equations and then balance them.

(1) When steam is passed over aluminium.

(2) Extraction of copper from its sulphide ore.

(3) Thermit reaction.

(4) When magnesium reacts with hot water.

(5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.

Discussion

4312.	Why is Henry constant inversely proportional to solubility?
Answer» Why is Henry constant inversely proportional to solubility?

Discussion

4313.	The following images represent an ___thermic reaction.
Answer» The following images represent an ___thermic reaction.

Discussion

4314.	Which of the following reaction does not release any gas as product?
Answer» Which of the following reaction does not release any gas as product?

Discussion

4315.	The boiling point of water in a 0.1 molal silver nitrate solution (solution A) is x∘C. To this solution A, an equal volume of 0.1 molal aqueous barium chloride solution is added to make a new solution B. The difference in the boiling points of water in the two solutions A and B is y×10−2 ∘C(Assume : Densities of the solutions A and B are the same as that of water and the soluble salts dissociate completely.Use : Molal elevation constant (Ebullioscopic Constant), Kb =0.5K kg mol−1;Boiling point of pure water as 100∘C.) The value of \|y\| is ___.
Answer» The boiling point of water in a 0.1 molal silver nitrate solution (solution A) is $x^{\circ} C .$ To this solution A, an equal volume of 0.1 molal aqueous barium chloride solution is added to make a new solution B. The difference in the boiling points of water in the two solutions A and B is $y \times 10^{- 2}$ $^{\circ} C$ (Assume : Densities of the solutions A and B are the same as that of water and the soluble salts dissociate completely. Use : Molal elevation constant (Ebullioscopic Constant), $K_{b} = 0.5 K k g m o l^{- 1};$ Boiling point of pure water as $100^{\circ} C .$ ) The value of \| $y$ \| is ___.

Discussion

4316.	During the electrolysis of acidified water, the substance liberated at the anode is
Answer» During the electrolysis of acidified water, the substance liberated at the anode is

Discussion

4317.	Which of the followings is an example of liquid dish washing detergent?
Answer» Which of the followings is an example of liquid dish washing detergent?

Discussion

4318.	7. Heat of formation at standard state for CO2(g),H20() and Hydrocarbon CxH2x are - 400 kJ/mol,300 kJ/mol and 50 kJ/mol respectively If heat ofcombustion of CxH2x at standard state is-1450 kJ/mol,the correct formula of Hydrocarbon is
Answer» 7. Heat of formation at standard state for CO2(g),H20() and Hydrocarbon CxH2x are - 400 kJ/mol,300 kJ/mol and 50 kJ/mol respectively If heat ofcombustion of CxH2x at standard state is-1450 kJ/mol,the correct formula of Hydrocarbon is

Discussion

4319.	a chemical compound X is used as a preservative in making pickles . what is the IUPAC name of complound X
Answer» a chemical compound X is used as a preservative in making pickles . what is the IUPAC name of complound X

Discussion

4320.	Choose the element with correct dot structure.
Answer» Choose the element with correct dot structure.

Discussion

4321.	Which of the following amines will not give Hoffman-Bromamide reaction?
Answer» Which of the following amines will not give Hoffman-Bromamide reaction?

Discussion

4322.	How do we know the charge/ions of the reactants?
Answer» How do we know the charge/ions of the reactants?

Discussion

4323.	The correct order of the atomic radii of C, Cs, Al and S is:
Answer» The correct order of the atomic radii of $C, C s, A l$ and $S$ is:

Discussion

4324.	Which of the following is the sulphide ore of iron?
Answer» Which of the following is the sulphide ore of iron?

Discussion

4325.	Complete the following statement using every given options.During the extraction of aluminium..............a. Ingredients and gangue in bauxite.b. Use of leaching during the concentration of ore.c. Chemical reaction of transformation of bauxite into alumina by Hall’s process.d. Heating the aluminium ore with concentrated caustic soda.
Answer» Complete the following statement using every given options. During the extraction of aluminium.............. a. Ingredients and gangue in bauxite. b. Use of leaching during the concentration of ore. c. Chemical reaction of transformation of bauxite into alumina by Hall’s process. d. Heating the aluminium ore with concentrated caustic soda.

Discussion

4326.	the average oxidation of chlorine in bleaching powder is
Answer» the average oxidation of chlorine in bleaching powder is

Discussion

4327.	on adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
Answer» on adding $N a H C O_{3}$ to acetic acid, a gas is evolved which turns lime water milky due to the formation of:

Discussion

4328.	16 g of carbon dioxide (CO2) when passed through limewater turns it milky. The number of molecules of carbon dioxide present in 16 g are _________.
Answer» 16 g of carbon dioxide ( $C O_{2}$ ) when passed through limewater turns it milky. The number of molecules of carbon dioxide present in 16 g are _________.

Discussion

4329.	Sir does sunlight or light decomposition possible for Ag2s ans the question in yes or no
Answer» Sir does sunlight or light decomposition possible for Ag2s ans the question in yes or no

Discussion

4330.	Calculate the mass and volume of oxygen at STP, which will be evolved on electrolysis of 1 mole (18g) of water.
Answer» Calculate the mass and volume of oxygen at STP, which will be evolved on electrolysis of 1 mole (18g) of water.

Discussion

4331.	A reaction in which an insoluble product (precipitate) is formed is called __ reaction.
Answer» A reaction in which an insoluble product (precipitate) is formed is called __ reaction.

Discussion

4332.	Metal oxide + water → ______.
Answer» Metal oxide + water $\to$ ______.

Discussion

4333.	If ionisation cons†an t of a monoprotic acid is 1.6×10^{-4} then what will be the concentration of H^+ ions if it is 2% dissociated
Answer» If ionisation cons†an t of a monoprotic acid is 1.6×10^{-4} then what will be the concentration of H^+ ions if it is 2% dissociated

Discussion

4334.	Question 2 A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains: 1. NaCl 2. HCl 3. LiCl 4. KCl
Answer» Question 2 A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains: 1. NaCl 2. HCl 3. LiCl 4. KCl

Discussion

4335.	Q) Which ionic hydride is stable upto its melting point? 1)Nah 2)LiH 3)CaH2 4)BaH
Answer» Q) Which ionic hydride is stable upto its melting point? 1)Nah 2)LiH 3)CaH2 4)BaH

Discussion

4336.	Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?
Answer» Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for $C, C a, A l, F and O$ ?

Discussion

4337.	Give the combined reactivity series of metals and non metals .
Answer» Give the combined reactivity series of metals and non metals .

Discussion

4338.	Observe the given figures and choose the correct option :(1) pH of I is greater than pH of II and III(2) pH of III is greater than pH of I and II(3) pH of I, II and III is equal(4) pH of II is greater than pH of I and III
Answer» Observe the given figures and choose the correct option : (1) pH of I is greater than pH of II and III (2) pH of III is greater than pH of I and II (3) pH of I, II and III is equal (4) pH of II is greater than pH of I and III

Discussion

4339.	Name the type of reaction involved in black and white photography.
Answer» Name the type of reaction involved in black and white photography.

Discussion

4340.	The combination of which of the following compounds will give an ester?
Answer» The combination of which of the following compounds will give an ester?

Discussion

4341.	Total volume occupied by the molecules in van der waals gas equation for n mole of gas is given by
Answer» Total volume occupied by the molecules in van der waals gas equation for n mole of gas is given by

Discussion

4342.	The correct formula of rust is
Answer» The correct formula of rust is

Discussion

4343.	The daily intake of a human adult is nearly 107 J. Its value in kilocalorie will be approximately
Answer» The daily intake of a human adult is nearly $10^{7} J$ . Its value in kilocalorie will be approximately

Discussion

4344.	5. In which of the following bond angle is maximum and why ? A NH3 B NH4+ C PCl3 D SCl2
Answer» 5. In which of the following bond angle is maximum and why ? A NH3 B NH4+ C PCl3 D SCl2

Discussion

4345.	Through the two opposite ends of a glass tube of uniform cross-section area having length 300 cm, HCl(g) and NH3(g) are allowed to enter at same time. At what distance from NH3 end, the first fume of ammonium chloride will appear? a)118.9 cm b) 178.57 cm c) 121.43 cmd) 81.9 cm
Answer» Through the two opposite ends of a glass tube of uniform cross-section area having length 300 cm, HCl(g) and $N H_{3}$ (g) are allowed to enter at same time. At what distance from $N H_{3}$ end, the first fume of ammonium chloride will appear? a)118.9 cm b) 178.57 cm c) 121.43 cm d) 81.9 cm

4345.

Through the two opposite ends of a glass tube of uniform cross-section area having length 300 cm, HCl(g) and NH3(g) are allowed to enter at same time. At what distance from NH3 end, the first fume of ammonium chloride will appear? a)118.9 cm b) 178.57 cm c) 121.43 cmd) 81.9 cm

Answer»

Through the two opposite ends of a glass tube of uniform cross-section area having length 300 cm, HCl(g) and $N H_{3}$ (g) are allowed to enter at same time. At what distance from $N H_{3}$ end, the first fume of ammonium chloride will appear?

a)118.9 cm

b) 178.57 cm

c) 121.43 cm

d) 81.9 cm

Discussion

4346.	What is a balanced chemical equation? Give examples.
Answer» What is a balanced chemical equation? Give examples.

Discussion

4347.	What is relative atomic mass?
Answer» What is relative atomic mass?

Discussion

4348.	Amongst dry HCl and HCl solution , which can show acidic properties
Answer» Amongst dry HCl and HCl solution , which can show acidic properties

Discussion

4349.	The most acidic of the following is
Answer» The most acidic of the following is

Discussion

4350.	Question 24During electrolytic refining of zinc, it gets:(a) deposited on cathode.(b) deposited on anode.(c) deposited on cathode as well as anode.(d) remains in the solution.
Answer» Question 24 During electrolytic refining of zinc, it gets: (a) deposited on cathode. (b) deposited on anode. (c) deposited on cathode as well as anode. (d) remains in the solution.

Discussion

Explore topic-wise InterviewSolutions in .

Write balanced equation for the preparation of ammonia from ammonium chloride.

43.For a certain process , pressure of diatomic gas varies according to the relation P= aV2( v has power 2), where a is constant . what is the molar heat capacity of the gas for this process?

The products obtained when 2-methylpropene is oxidised with hot conc. acidic KMnO4 are .

When Zn converts from melted state to its solid state, it has hcp structure, then find the number of nearest atoms.

y=ex.logx.sinx

We know that h +ion when added to h2o gives us hydronium ion (h3o) + where h+ ion joins itself to one of the lone pair of h20 molecule but, Can another h+ ion would form a dative bond to a remaining lone pair in h2o to form (h4o)2+ ion???

Why some of the alpha particles get deflected and why some particles goes straight in Rutherford atomic model

Question 30.Identify the correct representation of reaction occurring during chloralkali process.(a) 2NaCl(l)+2H2O(l)→2NaOH(l)+Cl2(g)+H2(g)(b) 2NaCl(aq)+2H2O(aq)→2NaOH(aq)+Cl2(g)+H2(g)(c) 2NaCl(aq)+2H2O(l)→2NaOH(aq)+Cl2(aq)+H2(aq)(d) 2NaCl(aq)+2H2O(l)→2NaOH(aq)+Cl2(g)+H2(g)

Which matching seems to be correct?

Why is Henry constant inversely proportional to solubility?

The following images represent an ___thermic reaction.

Which of the following reaction does not release any gas as product?

During the electrolysis of acidified water, the substance liberated at the anode is

Which of the followings is an example of liquid dish washing detergent?

7. Heat of formation at standard state for CO2(g),H20() and Hydrocarbon CxH2x are - 400 kJ/mol,300 kJ/mol and 50 kJ/mol respectively If heat ofcombustion of CxH2x at standard state is-1450 kJ/mol,the correct formula of Hydrocarbon is

a chemical compound X is used as a preservative in making pickles . what is the IUPAC name of complound X

Choose the element with correct dot structure.

Which of the following amines will not give Hoffman-Bromamide reaction?

How do we know the charge/ions of the reactants?

The correct order of the atomic radii of C, Cs, Al and S is:

Which of the following is the sulphide ore of iron?

the average oxidation of chlorine in bleaching powder is

on adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:

16 g of carbon dioxide (CO2) when passed through limewater turns it milky. The number of molecules of carbon dioxide present in 16 g are _________.

Sir does sunlight or light decomposition possible for Ag2s ans the question in yes or no

Calculate the mass and volume of oxygen at STP, which will be evolved on electrolysis of 1 mole (18g) of water.

A reaction in which an insoluble product (precipitate) is formed is called __ reaction.

Metal oxide + water → ______.

If ionisation cons†an t of a monoprotic acid is 1.6×10^{-4} then what will be the concentration of H^+ ions if it is 2% dissociated

Question 2 A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains: 1. NaCl 2. HCl 3. LiCl 4. KCl

Q) Which ionic hydride is stable upto its melting point? 1)Nah 2)LiH 3)CaH2 4)BaH

Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?

Give the combined reactivity series of metals and non metals .

Observe the given figures and choose the correct option :(1) pH of I is greater than pH of II and III(2) pH of III is greater than pH of I and II(3) pH of I, II and III is equal(4) pH of II is greater than pH of I and III

Name the type of reaction involved in black and white photography.

The combination of which of the following compounds will give an ester?

Total volume occupied by the molecules in van der waals gas equation for n mole of gas is given by

The correct formula of rust is

The daily intake of a human adult is nearly 107 J. Its value in kilocalorie will be approximately

5. In which of the following bond angle is maximum and why ? A NH3 B NH4+ C PCl3 D SCl2

Through the two opposite ends of a glass tube of uniform cross-section area having length 300 cm, HCl(g) and NH3(g) are allowed to enter at same time. At what distance from NH3 end, the first fume of ammonium chloride will appear? a)118.9 cm b) 178.57 cm c) 121.43 cmd) 81.9 cm

What is a balanced chemical equation? Give examples.

What is relative atomic mass?

Amongst dry HCl and HCl solution , which can show acidic properties

The most acidic of the following is

Question 24During electrolytic refining of zinc, it gets:(a) deposited on cathode.(b) deposited on anode.(c) deposited on cathode as well as anode.(d) remains in the solution.