15280 + Interview Questions in Chemistry Page 178 InterviewSolution

8851.	Which of the following are the products formed on heating CuSO4.5H2O (s)?
Answer» Which of the following are the products formed on heating $C u S O_{4} . 5 H_{2} O (s)$ ?

Discussion

8852.	A solution of Cu(II) sul phate is reacted with KCI and KI. Inwhich case will the Cu be reduced to Cu\ast?ta In both the cases(b) When reacted with KCI(c) When reacted with KI(d) In both the cases but in presence of HF
Answer» A solution of Cu(II) sul phate is reacted with KCI and KI. Inwhich case will the Cu be reduced to Cu\ast?ta In both the cases(b) When reacted with KCI(c) When reacted with KI(d) In both the cases but in presence of HF

Discussion

8853.	What change will you observe if you test soap with litmus paper (red and blue)?
Answer» What change will you observe if you test soap with litmus paper (red and blue)?

Discussion

8854.	3. While nucleophic and electrophili mechanism were taught certain terms was used like according to kinetics, bimolecular reaction and unimolecular reaction and order of reaction what does these terms mean and what is it's significance ?
Answer» 3. While nucleophic and electrophili mechanism were taught certain terms was used like according to kinetics, bimolecular reaction and unimolecular reaction and order of reaction what does these terms mean and what is it's significance ?

Discussion

8855.	Choose the correct option:
Answer» Choose the correct option:

Discussion

8856.	If Z is the number of protons and A the number of nucleons, then the number of neutrons in an atom is given by
Answer» If Z is the number of protons and A the number of nucleons, then the number of neutrons in an atom is given by

Discussion

8857.	The images show ______, which is one of the most important resources on Earth.
Answer» The images show ______, which is one of the most important resources on Earth.

Discussion

8858.	The property due to which a substance abosrbs moisture and dissolves in it is called
Answer» The property due to which a substance abosrbs moisture and dissolves in it is called

Discussion

8859.	Al2O3.2SiO2.2H2O is the chemical formula of?
Answer» ${A l}_{2} O_{3} . 2 S i O_{2} . 2 H_{2} O$ is the chemical formula of?

Discussion

8860.	21. At 300 K standard enthalpy of formation of C6H5COOH(s), CO2(g), and H2O(l) are -408, -393, and -286 kj per mol respectively. Calculate heat of combustion of benzoic acid at constant volume
Answer» 21. At 300 K standard enthalpy of formation of C6H5COOH(s), CO2(g), and H2O(l) are -408, -393, and -286 kj per mol respectively. Calculate heat of combustion of benzoic acid at constant volume

Discussion

8861.

Match the substances givenin Column A with their uses given in Column B. A B (i) Gold (a) Thermometers (ii) Iron (b) Electric wire (iii) Aluminium (c) Wrapping food (iv) Carbon (d) Jewellery (v) Copper (e) Machinery (vi) Mercury (f) Fuel

Answer»

Match the substances given
in Column A with their uses given in Column B.

A		B
(i)	Gold	(a)	Thermometers
(ii)	Iron	(b)	Electric wire
(iii)	Aluminium	(c)	Wrapping food
(iv)	Carbon	(d)	Jewellery
(v)	Copper	(e)	Machinery
(vi)	Mercury	(f)	Fuel

Discussion

8862.	What exactly did Skander do?
Answer» What exactly did Skander do?

Discussion

8863.	In teritary structure whether ionic and peptide bond is same or not?
Answer» In teritary structure whether ionic and peptide bond is same or not?

Discussion

8864.	On what basis is a chemical equation balanced
Answer» On what basis is a chemical equation balanced

Discussion

8865.	Aqueous solution of which salt will not be hydrolysed? 1 Caesium nitrate 2. Ammonium acetate 3. Ammonium sulphate 4. Sodium carbonate
Answer» Aqueous solution of which salt will not be hydrolysed? 1 Caesium nitrate 2. Ammonium acetate 3. Ammonium sulphate 4. Sodium carbonate

Discussion

8866.	The total number of basic group in the following form of lysine is
Answer» The total number of basic group in the following form of lysine is

Discussion

8867.	What are the major reactions of catalytic oxidation of alkene ?
Answer» What are the major reactions of catalytic oxidation of alkene ?

Discussion

8868.	Define chain isomerism along with an example.
Answer» Define chain isomerism along with an example.

Discussion

8869.	Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called_____
Answer» Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called_____

Discussion

8870.	Question 45Complete the following crossword puzzle (Fig, 3.1) by using the name of the chemical elements. Use the data given in Table 3.2.
Answer» Question 45 Complete the following crossword puzzle (Fig, 3.1) by using the name of the chemical elements. Use the data given in Table 3.2.

Discussion

8871.	Tertiary alcohols having at least four carbon atoms upon drastic oxidation yield carboxylic acid with:
Answer» Tertiary alcohols having at least four carbon atoms upon drastic oxidation yield carboxylic acid with:

Discussion

8872.	Silver chloride and silver bromide are used in black and white photography.Which of the following are correct? (i) Energy in form of light is required for the reaction to happen. (ii) Both are endothermic reactions. (iii) Only silver chloride decomposes into solid metal and non- metal gas. (iv) Both compounds decompose into their respective metal and non- metal gases.
Answer» Silver chloride and silver bromide are used in black and white photography.Which of the following are correct? (i) Energy in form of light is required for the reaction to happen. (ii) Both are endothermic reactions. (iii) Only silver chloride decomposes into solid metal and non- metal gas. (iv) Both compounds decompose into their respective metal and non- metal gases.

8872.

Silver chloride and silver bromide are used in black and white photography.Which of the following are correct? (i) Energy in form of light is required for the reaction to happen. (ii) Both are endothermic reactions. (iii) Only silver chloride decomposes into solid metal and non- metal gas. (iv) Both compounds decompose into their respective metal and non- metal gases.

Answer»

Silver chloride and silver bromide are used in black and white photography.Which of the following are correct?

(i) Energy in form of light is required for the reaction to happen.

(ii) Both are endothermic reactions.

(iii) Only silver chloride decomposes into solid metal and non- metal gas.

(iv) Both compounds decompose into their respective metal and non- metal gases.

Discussion

8873.	On absorbing light of wavelength 3800A^°, bromine molecule undergoes dissociation and form atoms. The kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecule would be ( bond energy of Br2=190 KJ/mol )
Answer» On absorbing light of wavelength 3800A^°, bromine molecule undergoes dissociation and form atoms. The kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecule would be ( bond energy of Br2=190 KJ/mol )

Discussion

8874.	Write the name and formula of the 2nd member of homologous series having general formula CnH2n.
Answer» Write the name and formula of the 2nd member of homologous series having general formula C_nH_2n.

Discussion

8875.	What are amphoteric oxides? Give two examples of amphoteric oxides.
Answer» What are amphoteric oxides? Give two examples of amphoteric oxides.

Discussion

8876.	how to calculate ph when molarity is given
Answer» how to calculate ph when molarity is given

Discussion

8877.	What is position isomerism?
Answer» What is position isomerism?

Discussion

8878.	How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem? [3 MARKS]
Answer» How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem? [3 MARKS]

Discussion

8879.	Write balanced chemical equations for the following processes: (i) XeF undergoes hydrolysis. (ii) MnO is heated with conc. HCl.
Answer» Write balanced chemical equations for the following processes: (i) $X e F$ undergoes hydrolysis. (ii) $M n O$ is heated with conc. $H C l$ .

Discussion

8880.	Explain the formation of NaCl molecules.
Answer» Explain the formation of NaCl molecules.

Discussion

8881.	Bases are Metal+OH, thenAcids are ?Tell in both the sum of OH and H.
Answer» Bases are Metal+OH, then Acids are ? Tell in both the sum of OH and H.

Discussion

8882.	Which of the following can damage optic nerve leading to blindness, if taken internally ? (a) CH3COOH (b) C2H5OH (c) NaHCO3 (d) CH3OH
Answer» Which of the following can damage optic nerve leading to blindness, if taken internally ? (a) $C H_{3} C O O H$ (b) $C_{2} H_{5} O H$ (c) $N a H C O_{3}$ (d) $C H_{3} O H$

8882.

Which of the following can damage optic nerve leading to blindness, if taken internally ? (a) CH3COOH (b) C2H5OH (c) NaHCO3 (d) CH3OH

Answer»

Which of the following can damage optic nerve leading to blindness, if taken internally ?

(a) $C H_{3} C O O H$ (b) $C_{2} H_{5} O H$ (c) $N a H C O_{3}$ (d) $C H_{3} O H$

Discussion

8883.	If the ionization energy of He+2 is 19.6x10^-18 J per atom then the energy of Be+3 ion in the second stationary state is?1) -4.9x10^-18J 2) -44.1x10^x18J 3) -11.025x10^-18 J 4) none of these
Answer» If the ionization energy of He+2 is 19.6x10^-18 J per atom then the energy of Be+3 ion in the second stationary state is? 1) -4.9x10^-18J 2) -44.1x10^x18J 3) -11.025x10^-18 J 4) none of these

Discussion

8884.	Why only non-metals act as an oxidising agent?
Answer» Why only non-metals act as an oxidising agent?

Discussion

8885.	Lindlars catalyst
Answer» Lindlars catalyst

Discussion

8886.	1g equimolar mixture of CaCO3 and NaHCO3 undergo complete thermal decomposition. The volume of CO2 produced at STP
Answer» 1g equimolar mixture of CaCO3 and NaHCO3 undergo complete thermal decomposition. The volume of CO2 produced at STP

Discussion

8887.	KF has NaCL structure.If distance between K+ & F- is 269pm .find the density of KF ( at. Mass of K=39&F=19
Answer» KF has NaCL structure.If distance between K+ & F- is 269pm .find the density of KF ( at. Mass of K=39&F=19

Discussion

8888.	If pressure is doubled at the same absolute temperature on 2L of CO2, then the final volume of CO2 will be
Answer» If pressure is doubled at the same absolute temperature on 2L of $C O_{2}$ , then the final volume of $C O_{2}$ will be

Discussion

8889.	Write the name and chemical formula of any strong organic acid
Answer» Write the name and chemical formula of any strong organic acid

Discussion

8890.	79. If pH of 'C' molar HA (weak acid) aqueous solution is 2 and the Van't Hoff Factor is 1.01 then the value of C is (1) 1 (2) 2 (3) 4 (4) 8
Answer» 79. If pH of 'C' molar HA (weak acid) aqueous solution is 2 and the Van't Hoff Factor is 1.01 then the value of C is (1) 1 (2) 2 (3) 4 (4) 8

Discussion

8891.	What is the difference between molecular solid and covalent solid?
Answer» What is the difference between molecular solid and covalent solid?

Discussion

8892.	Since the products of reactions of acid + base and acid + metal oxide are same. Why acid + metal oxide reaction is not neutralization reaction?
Answer» Since the products of reactions of acid + base and acid + metal oxide are same. Why acid + metal oxide reaction is not neutralization reaction?

Discussion

8893.	In triangle DEF and PQR, DE = PQ, EF = QR. ∠E = ∠Q. so the triangles are congruent using.
Answer» In triangle DEF and PQR, DE = PQ, EF = QR. ∠E = ∠Q. so the triangles are congruent using.

Discussion

8894.	In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid condition in the end? (1) 20 litres ammonia, 20 litres nitrogen, 20 litres hydrogen (2) 10 litres ammonia, 25 litres nitrogen, 15 litres hydrogen (3) 20 litres ammonia, 10 litres nitrogen, 30 litres hydrogen (4) 20 litres ammonia, 25 litres nitrogen, 15 litres hydrogen
Answer» In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid condition in the end? (1) 20 litres ammonia, 20 litres nitrogen, 20 litres hydrogen (2) 10 litres ammonia, 25 litres nitrogen, 15 litres hydrogen (3) 20 litres ammonia, 10 litres nitrogen, 30 litres hydrogen (4) 20 litres ammonia, 25 litres nitrogen, 15 litres hydrogen

Discussion

8895.	An organic compound has the following percentage composition: C = 12.76%, H = 2.13%, Br = 85.11%. The vapour density of the compound is 94. Find out its molecular formula [C = 12, H = 1, Br = 80].
Answer» An organic compound has the following percentage composition: C = 12.76%, H = 2.13%, Br = 85.11%. The vapour density of the compound is 94. Find out its molecular formula [C = 12, H = 1, Br = 80].

Discussion

8896.	58.How does dimerization of alkyne takes place?
Answer» 58.How does dimerization of alkyne takes place?

Discussion

8897.	A solid element form gaseous chloride on reaction with cl2(at certain temperature)without change in volume if vapour density of chloride is 47.5,then equivalent weight of element is 1)12 2)8 3)35.5 4)1
Answer» A solid element form gaseous chloride on reaction with cl2(at certain temperature)without change in volume if vapour density of chloride is 47.5,then equivalent weight of element is 1)12 2)8 3)35.5 4)1

Discussion

8898.	The IUPAC name of the given compound is ________.
Answer» The IUPAC name of the given compound is ________.

Discussion

8899.	If 28 gm of nitrogen gas consists of 6.022×1023 molecules. Then how many gram of nitrogen will have 4.22×1023 molecules.
Answer» If 28 gm of nitrogen gas consists of $6.022 \times 10^{23}$ molecules. Then how many gram of nitrogen will have $4.22 \times 10^{23}$ molecules.

Discussion

8900.	Identify product X:
Answer» Identify product X:

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following are the products formed on heating CuSO4.5H2O (s)?

A solution of Cu(II) sul phate is reacted with KCI and KI. Inwhich case will the Cu be reduced to Cu\ast?ta In both the cases(b) When reacted with KCI(c) When reacted with KI(d) In both the cases but in presence of HF

What change will you observe if you test soap with litmus paper (red and blue)?​

3. While nucleophic and electrophili mechanism were taught certain terms was used like according to kinetics, bimolecular reaction and unimolecular reaction and order of reaction what does these terms mean and what is it's significance ?

Choose the correct option:

If Z is the number of protons and A the number of nucleons, then the number of neutrons in an atom is given by

The images show ______, which is one of the most important resources on Earth.

The property due to which a substance abosrbs moisture and dissolves in it is called

Al2O3.2SiO2.2H2O is the chemical formula of?

21. At 300 K standard enthalpy of formation of C6H5COOH(s), CO2(g), and H2O(l) are -408, -393, and -286 kj per mol respectively. Calculate heat of combustion of benzoic acid at constant volume

Match the substances givenin Column A with their uses given in Column B. A B (i) Gold (a) Thermometers (ii) Iron (b) Electric wire (iii) Aluminium (c) Wrapping food (iv) Carbon (d) Jewellery (v) Copper (e) Machinery (vi) Mercury (f) Fuel

What exactly did Skander do?

In teritary structure whether ionic and peptide bond is same or not?

On what basis is a chemical equation balanced

Aqueous solution of which salt will not be hydrolysed? 1 Caesium nitrate 2. Ammonium acetate 3. Ammonium sulphate 4. Sodium carbonate

The total number of basic group in the following form of lysine is

What are the major reactions of catalytic oxidation of alkene ?

Define chain isomerism along with an example.

Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called_____

Question 45Complete the following crossword puzzle (Fig, 3.1) by using the name of the chemical elements. Use the data given in Table 3.2.

Tertiary alcohols having at least four carbon atoms upon drastic oxidation yield carboxylic acid with:

On absorbing light of wavelength 3800A^°, bromine molecule undergoes dissociation and form atoms. The kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecule would be ( bond energy of Br2=190 KJ/mol )

Write the name and formula of the 2nd member of homologous series having general formula CnH2n.

What are amphoteric oxides? Give two examples of amphoteric oxides.

how to calculate ph when molarity is given

What is position isomerism?

​How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem? [3 MARKS]

Write balanced chemical equations for the following processes: (i) XeF undergoes hydrolysis. (ii) MnO is heated with conc. HCl.

Explain the formation of NaCl molecules.

Bases are Metal+OH, thenAcids are ?Tell in both the sum of OH and H.

Which of the following can damage optic nerve leading to blindness, if taken internally ? (a) CH3COOH (b) C2H5OH (c) NaHCO3 (d) CH3OH

If the ionization energy of He+2 is 19.6x10^-18 J per atom then the energy of Be+3 ion in the second stationary state is?1) -4.9x10^-18J 2) -44.1x10^x18J 3) -11.025x10^-18 J 4) none of these

Why only non-metals act as an oxidising agent?

Lindlars catalyst

1g equimolar mixture of CaCO3 and NaHCO3 undergo complete thermal decomposition. The volume of CO2 produced at STP

KF has NaCL structure.If distance between K+ & F- is 269pm .find the density of KF ( at. Mass of K=39&F=19

If pressure is doubled at the same absolute temperature on 2L of CO2, then the final volume of CO2 will be

Write the name and chemical formula of any strong organic acid

79. If pH of 'C' molar HA (weak acid) aqueous solution is 2 and the Van't Hoff Factor is 1.01 then the value of C is (1) 1 (2) 2 (3) 4 (4) 8

What is the difference between molecular solid and covalent solid?

Since the products of reactions of acid + base and acid + metal oxide are same. Why acid + metal oxide reaction is not neutralization reaction?

In triangle DEF and PQR, DE = PQ, EF = QR. ∠E = ∠Q. so the triangles are congruent using.

An organic compound has the following percentage composition: C = 12.76%, H = 2.13%, Br = 85.11%. The vapour density of the compound is 94. Find out its molecular formula [C = 12, H = 1, Br = 80].

58.How does dimerization of alkyne takes place?

A solid element form gaseous chloride on reaction with cl2(at certain temperature)without change in volume if vapour density of chloride is 47.5,then equivalent weight of element is 1)12 2)8 3)35.5 4)1

The IUPAC name of the given compound is ________.

If 28 gm of nitrogen gas consists of 6.022×1023 molecules. Then how many gram of nitrogen will have 4.22×1023 molecules.

Identify product X:

What change will you observe if you test soap with litmus paper (red and blue)?

How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem? [3 MARKS]