15280 + Interview Questions in Chemistry Page 290 InterviewSolution

14451.	What do you mean by the Free State of a metal?
Answer» What do you mean by the Free State of a metal?

Discussion

14452.	A nitrate which does not produce nitrogen dioxide on heating. A nitrate which does not leave black residue on heating Dilute nitric acid is considered as a typical acid but not so in its reaction with metals A metallic nitate that decripitates on heating
Answer» A nitrate which does not produce nitrogen dioxide on heating. A nitrate which does not leave black residue on heating Dilute nitric acid is considered as a typical acid but not so in its reaction with metals A metallic nitate that decripitates on heating

14452.

A nitrate which does not produce nitrogen dioxide on heating. A nitrate which does not leave black residue on heating Dilute nitric acid is considered as a typical acid but not so in its reaction with metals A metallic nitate that decripitates on heating

Answer»

A nitrate which does not produce nitrogen dioxide on heating.

A nitrate which does not leave black residue on heating

Dilute nitric acid is considered as a typical acid but not so in its reaction with metals

A metallic nitate that decripitates on heating

Discussion

14453.	Match the functional groups with their general notation.
Answer» Match the functional groups with their general notation.

Discussion

14454.	Which has a maximum number of atoms?
Answer» Which has a maximum number of atoms?

Discussion

14455.	An element X is having the first ionisation enthalpy as 496kJ/mol. It is having second ionisation enthalpy as 4564kJ/mol. While it is having third ionisation enthalpy as 6918kJ/mol. And accordingly the fourth ionisation enthalpy is 9542kJ/mol. Find the formula of the sulphate and chloride of the element. Plz explain with the reason
Answer» An element X is having the first ionisation enthalpy as 496kJ/mol. It is having second ionisation enthalpy as 4564kJ/mol. While it is having third ionisation enthalpy as 6918kJ/mol. And accordingly the fourth ionisation enthalpy is 9542kJ/mol. Find the formula of the sulphate and chloride of the element. Plz explain with the reason

14455.

An element X is having the first ionisation enthalpy as 496kJ/mol. It is having second ionisation enthalpy as 4564kJ/mol. While it is having third ionisation enthalpy as 6918kJ/mol. And accordingly the fourth ionisation enthalpy is 9542kJ/mol. Find the formula of the sulphate and chloride of the element. Plz explain with the reason

Answer»

An element X is having the first ionisation enthalpy as 496kJ/mol. It is having second ionisation enthalpy as 4564kJ/mol. While it is having third ionisation enthalpy as 6918kJ/mol. And accordingly the fourth ionisation enthalpy is 9542kJ/mol. Find the formula of the sulphate and chloride of the element.

Plz explain with the reason

Discussion

14456.	Which of the following is affected by stable configuration of an atom?(i)Electronegativity; (ii) Ionization potential and (iii) Electron affinity Correct answer is
Answer» Which of the following is affected by stable configuration of an atom?(i)Electronegativity; (ii) Ionization potential and (iii) Electron affinity Correct answer is

Discussion

14457.	Galvanization is a process in which metal (Iron or steel) is __________.
Answer» Galvanization is a process in which metal (Iron or steel) is __________.

Discussion

14458.	What is the Conjugate acid of NH2^-
Answer» What is the Conjugate acid of NH2^-

Discussion

14459.	What is the next higher homologue of methanol (CH3OH)?
Answer» What is the next higher homologue of methanol $(C H_{3} O H)$ ?

Discussion

14460.	In hydrogenation of unsaturated compounds, ___ is used as a catalyst
Answer» In hydrogenation of unsaturated compounds, ___ is used as a catalyst

Discussion

14461.	What property do all the elements in the same group of the periodic table as fluorine have in common ?
Answer» What property do all the elements in the same group of the periodic table as fluorine have in common ?

Discussion

14462.	Steps or process of balancing equations like barium chloride+potassium sulphate-->barium sulphate+potassium chloride.Explain.
Answer» Steps or process of balancing equations like barium chloride+potassium sulphate-->barium sulphate+potassium chloride.Explain.

Discussion

14463.	What volume of 0.10 MH2SO4 must be added to 50 ml of a 0.10 M NaOH solution to make a solution in which the molarity of theH2SO4 is 0.050 M?
Answer» What volume of 0.10 M $H_{2} S O_{4}$ must be added to 50 ml of a 0.10 M $N a O H$ solution to make a solution in which the molarity of the $H_{2} S O_{4}$ is 0.050 M?

Discussion

14464.	What would be the frequency of the wave if it has wavelength of 100 nm? Speed of light = 3×108 m/s
Answer» What would be the frequency of the wave if it has wavelength of $100 nm$ ? Speed of light = $3 \times 10^{8} m/s$

Discussion

14465.	Find the empirical formula of a compound containing 17.7 % hydrogena and 82.3 % nitrogen.
Answer» Find the empirical formula of a compound containing 17.7 % hydrogena and 82.3 % nitrogen.

Discussion

14466.	Write two precautions required while finding the pH of the samples?
Answer» Write two precautions required while finding the pH of the samples?

Discussion

14467.	Name an acid which is present in baking powder.
Answer» Name an acid which is present in baking powder.

Discussion

14468.	Match the following: (i)Water(A)Compound(ii)Hydrogen(B)Element(iii)Salt(iv)Gold(v)Carbon dioxide(vi)Iron The correct pairs are:-
Answer» Match the following: $\begin{matrix} (i) & Water & (A) & Compound (ii) & Hydrogen & (B) & Element (iii) & Salt (iv) & Gold (v) & Carbon dioxide (vi) & Iron \end{matrix}$ The correct pairs are:-

14468.

Match the following: (i)Water(A)Compound(ii)Hydrogen(B)Element(iii)Salt(iv)Gold(v)Carbon dioxide(vi)Iron The correct pairs are:-

Answer»

Match the following:

$\begin{matrix} (i) & Water & (A) & Compound (ii) & Hydrogen & (B) & Element (iii) & Salt (iv) & Gold (v) & Carbon dioxide (vi) & Iron \end{matrix}$
The correct pairs are:-

Discussion

14469.	On 1st January, 2016, V sold goods worth Rs. 36,000 to S and drew upon the latter bills of exchange for the same amount payable afte two months. S accepted V's draft and returned the same to V after acceptance. V endorsed the bill immediately in favour of his creditor G. Five days before the maturity of the bill S requested V to cancel the bill since he was in short of funds. He further requested to draw a new bill upon him including interest of Rs. 400. V accepted S's request. V took the bill from G by making the payment to him in cash and cancelled the same. Then he drew a new bill upon S as agreed. The new bill was payable after one month. The new bill was duly met by S on maturity. Record the necessary journal entries in the books of V.
Answer» On 1st January, 2016, V sold goods worth Rs. 36,000 to S and drew upon the latter bills of exchange for the same amount payable afte two months. S accepted V's draft and returned the same to V after acceptance. V endorsed the bill immediately in favour of his creditor G. Five days before the maturity of the bill S requested V to cancel the bill since he was in short of funds. He further requested to draw a new bill upon him including interest of Rs. 400. V accepted S's request. V took the bill from G by making the payment to him in cash and cancelled the same. Then he drew a new bill upon S as agreed. The new bill was payable after one month. The new bill was duly met by S on maturity. Record the necessary journal entries in the books of V.

Discussion

14470.	Which of the following is/are true?
Answer» Which of the following is/are true?

Discussion

14471.	In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.
Answer» In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.

Discussion

14472.	Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?
Answer» Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?

Discussion

14473.	(a) Define the term isomerism. State two main causes of Isomerism. (b) Draw the chain isomers of hexane (C6H12). (c) Draw position isomers of butene (C4H8). [3 MARKS]
Answer» (a) Define the term isomerism. State two main causes of Isomerism. (b) Draw the chain isomers of hexane $(C_{6} H_{12})$ . (c) Draw position isomers of butene $(C_{4} H_{8})$ . [3 MARKS]

Discussion

14474.	Arrange the energy required to break all the bonds in each of the following bond types in descending order.
Answer» Arrange the energy required to break all the bonds in each of the following bond types in descending order.

Discussion

14475.	Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of the burner . Why? Give reason.
Answer» Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of the burner . Why? Give reason.

Discussion

14476.	Number average molecular mass and weight average molecular mass of synthetic polymers are related as?
Answer» Number average molecular mass and weight average molecular mass of synthetic polymers are related as?

Discussion

14477.	Why do elements on R.H.S. of the periodic table have high electron affinity?
Answer» Why do elements on R.H.S. of the periodic table have high electron affinity?

Discussion

14478.	Nessler's reagent is added to concentrated ammonium salt. What is the colour of the precipitate formed?
Answer» Nessler's reagent is added to concentrated ammonium salt. What is the colour of the precipitate formed?

Discussion

14479.	Which of the following is the correct representation of the molecule of a polar covalent compound?
Answer» Which of the following is the correct representation of the molecule of a polar covalent compound?

Discussion

14480.	Which of the following is the correct order of the atomic size of C, N, P and S?
Answer» Which of the following is the correct order of the atomic size of C, N, P and S?

Discussion

14481.	Construct (a) a long food chain, and (b) a short foodchain, ending with man.
Answer» Construct (a) a long food chain, and (b) a short foodchain, ending with man.

Discussion

14482.	Which of the following is a displacement reaction?
Answer» Which of the following is a displacement reaction?

Discussion

14483.	Define Electro negative, Electro positive and metalloids.
Answer» Define Electro negative, Electro positive and metalloids.

Discussion

14484.	An alloy of iron, chromium and nickel is:
Answer» An alloy of iron, chromium and nickel is:

Discussion

14485.	Which of the following is the correct electronic configuration for Ca?
Answer» Which of the following is the correct electronic configuration for Ca?

Discussion

14486.	"Animals eat either plants or other animals, then how are they dependent on the sun for energy". Justify.
Answer» "Animals eat either plants or other animals, then how are they dependent on the sun for energy". Justify.

Discussion

14487.	On what basis have elements classified into blocks S, P, D and F?
Answer» On what basis have elements classified into blocks S, P, D and F?

Discussion

14488.	How is glacial acetic acid different from Acetic Acid provided to you in laboratory? Write its one characteristic which gives it this name.
Answer» How is glacial acetic acid different from Acetic Acid provided to you in laboratory? Write its one characteristic which gives it this name.

Discussion

14489.	A person listens to a source of frequency 350 Hz standing at distance of 500 m. What is the time interval between successive rarefactions.
Answer» A person listens to a source of frequency 350 Hz standing at distance of 500 m. What is the time interval between successive rarefactions.

Discussion

14490.	A,B,C are three elements which undergo chemical change according to following equations- 1. A2O3+2B=A2O3+2A 2.3CSO4+B2[SO4]3+3C 3.3CO+2A=A2O3+3C Q1.ARRANGE IN THEIR INCREASING ORDER? Q2.WHICH IS MORE REACTIVE? Q3.WHICH IS LESS REACTIVE? Please explain ?
Answer» A,B,C are three elements which undergo chemical change according to following equations- 1. A2O3+2B=A2O3+2A 2.3CSO4+B2[SO4]3+3C 3.3CO+2A=A2O3+3C Q1.ARRANGE IN THEIR INCREASING ORDER? Q2.WHICH IS MORE REACTIVE? Q3.WHICH IS LESS REACTIVE? Please explain ?

Discussion

14491.	Which of the following exhibits geometrical Isomerism
Answer» Which of the following exhibits geometrical Isomerism

Discussion

14492.	eg of an alkali
Answer» eg of an alkali

Discussion

14493.	The above are examples of :
Answer» The above are examples of :

Discussion

14494.	On balancing the given equation, a,b,c and d respectively would be aFe2O3+bH2→cFe+dH2O
Answer» On balancing the given equation, a,b,c and d respectively would be $a F e_{2} O_{3} + b H_{2} \to c F e + d H_{2} O$

Discussion

14495.	Complete: (a) Vinegar is prepared by the bacterial oxidation of ___. (b) The organic acid present in vinegar is ___. (c) The next higher homologue of ethanoic acid is ___. [3 MARKS]
Answer» Complete: (a) Vinegar is prepared by the bacterial oxidation of ___. (b) The organic acid present in vinegar is ___. (c) The next higher homologue of ethanoic acid is ___. [3 MARKS]

Discussion

14496.	Which among the following is the most electropositive substance?
Answer» Which among the following is the most electropositive substance?

Discussion

14497.	(a) Name a metal for each case: (i) it does not react with cold as well as hot water but reacts with steam. (ii) It does not react with any physical state of water. (b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Answer» (a) Name a metal for each case: (i) it does not react with cold as well as hot water but reacts with steam. (ii) It does not react with any physical state of water. (b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?

14497.

(a) Name a metal for each case: (i) it does not react with cold as well as hot water but reacts with steam. (ii) It does not react with any physical state of water. (b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?

Answer»

(a) Name a metal for each case:
(i) it does not react with cold as well as hot water but reacts with steam.
(ii) It does not react with any physical state of water.

(b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?

Discussion

14498.	Why distilled water not conducts electricity? When rain water conducts electricity.
Answer» Why distilled water not conducts electricity? When rain water conducts electricity.

Discussion

14499.	Which of the following transitions involves maximum amount of energy change?
Answer» Which of the following transitions involves maximum amount of energy change?

Discussion

14500.	Which of the following is false for metals in general?
Answer» Which of the following is false for metals in general?

Discussion

Explore topic-wise InterviewSolutions in .

What do you mean by the Free State of a metal?

A nitrate which does not produce nitrogen dioxide on heating. A nitrate which does not leave black residue on heating Dilute nitric acid is considered as a typical acid but not so in its reaction with metals A metallic nitate that decripitates on heating

Match the functional groups with their general notation.

Which has a maximum number of atoms?

Which of the following is affected by stable configuration of an atom?(i)Electronegativity; (ii) Ionization potential and (iii) Electron affinity Correct answer is

Galvanization is a process in which metal (Iron or steel) is __________.

What is the Conjugate acid of NH2^-

What is the next higher homologue of methanol (CH3OH)?

In hydrogenation of unsaturated compounds, ___ is used as a catalyst

What property do all the elements in the same group of the periodic table as fluorine have in common ?

Steps or process of balancing equations like barium chloride+potassium sulphate--&gt;barium sulphate+potassium chloride.Explain.

What volume of 0.10 MH2SO4 must be added to 50 ml of a 0.10 M NaOH solution to make a solution in which the molarity of theH2SO4 is 0.050 M?

What would be the frequency of the wave if it has wavelength of 100 nm? Speed of light = 3×108 m/s

Find the empirical formula of a compound containing 17.7 % hydrogena and 82.3 % nitrogen.

Write two precautions required while finding the pH of the samples?

Name an acid which is present in baking powder.

Match the following: (i)Water(A)Compound(ii)Hydrogen(B)Element(iii)Salt(iv)Gold(v)Carbon dioxide(vi)Iron The correct pairs are:-

Which of the following is/are true?

In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.

Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?

(a) Define the term isomerism. State two main causes of Isomerism. (b) Draw the chain isomers of hexane (C6H12). (c) Draw position isomers of butene (C4H8). [3 MARKS]

Arrange the energy required to break all the bonds in each of the following bond types in descending order.

Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of the burner . Why? Give reason.

Number average molecular mass and weight average molecular mass of synthetic polymers are related as?

Why do elements on R.H.S. of the periodic table have high electron affinity?

Nessler's reagent is added to concentrated ammonium salt. What is the colour of the precipitate formed?

Which of the following is the correct representation of the molecule of a polar covalent compound?

Which of the following is the correct order of the atomic size of C, N, P and S?

Construct (a) a long food chain, and (b) a short foodchain, ending with man.

Which of the following is a displacement reaction?

Define Electro negative, Electro positive and metalloids.

An alloy of iron, chromium and nickel is:

Which of the following is the correct electronic configuration for Ca?

"Animals eat either plants or other animals, then how are they dependent on the sun for energy". Justify.

On what basis have elements classified into blocks S, P, D and F?

How is glacial acetic acid different from Acetic Acid provided to you in laboratory? Write its one characteristic which gives it this name.

A person listens to a source of frequency 350 Hz standing at distance of 500 m. What is the time interval between successive rarefactions.

A,B,C are three elements which undergo chemical change according to following equations- 1. A2O3+2B=A2O3+2A 2.3CSO4+B2[SO4]3+3C 3.3CO+2A=A2O3+3C Q1.ARRANGE IN THEIR INCREASING ORDER? Q2.WHICH IS MORE REACTIVE? Q3.WHICH IS LESS REACTIVE? Please explain ?

Which of the following exhibits geometrical Isomerism

eg of an alkali

The above are examples of :

On balancing the given equation, a,b,c and d respectively would be aFe2O3+bH2→cFe+dH2O

Complete: (a) Vinegar is prepared by the bacterial oxidation of ___. (b) The organic acid present in vinegar is ___. (c) The next higher homologue of ethanoic acid is ___. [3 MARKS]

Which among the following is the most electropositive substance?

Why distilled water not conducts electricity? When rain water conducts electricity.

Which of the following transitions involves maximum amount of energy change?

Which of the following is false for metals in general?

Steps or process of balancing equations like barium chloride+potassium sulphate-->barium sulphate+potassium chloride.Explain.

Complete: (a) Vinegar is prepared by the bacterial oxidation of _. (b) The organic acid present in vinegar is _. (c) The next higher homologue of ethanoic acid is ___. [3 MARKS]