15280 + Interview Questions in Chemistry Page 32 InterviewSolution

1551.	A six coordinate complex of formula CrCl_2.6H_2O has green colour .A 0.1M solution of the complex when treated with excess of AgNO_3 gave 28.7g of white precipitate the formula of compound would b
Answer» A six coordinate complex of formula CrCl_2.6H_2O has green colour .A 0.1M solution of the complex when treated with excess of AgNO_3 gave 28.7g of white precipitate the formula of compound would b

Discussion

1552.	How many water molecules are present in one molecule of Epsom salt?7
Answer» How many water molecules are present in one molecule of Epsom salt? 7

Discussion

1553.	Out of molatiry,morality,mole fraction of solute ,w/w%,w/v%,find the missing concentration terms in following solution :4.5% w/w glucose solution (density=1.2gm/ml
Answer» Out of molatiry,morality,mole fraction of solute ,w/w%,w/v%,find the missing concentration terms in following solution :4.5% w/w glucose solution (density=1.2gm/ml

Discussion

1554.	A current carrying straight wire depends inversely on the distance from it. Explain
Answer» A current carrying straight wire depends inversely on the distance from it. Explain

Discussion

1555.	What are the holes and what is their role in electrical conductivity?
Answer» What are the holes and what is their role in electrical conductivity?

Discussion

1556.	HOCH2CH2OH on heating with periodic acid gives
Answer» HOCH2CH2OH on heating with periodic acid gives

Discussion

1557.	The minerals from which the metals are extracted are called ___.
Answer» The minerals from which the metals are extracted are called ___.

Discussion

1558.	Which of the following statements is/are true for the complexes, [Fe(H2O)6]2+,[Fe(CN)6]3−,[Fe(C2O4)3]3− and [Fe(CO)5]?
Answer» Which of the following statements is/are true for the complexes, $[F e (H_{2} O)_{6}]^{2 +}, [F e (C N)_{6}]^{3 -}, [F e (C_{2} O_{4})_{3}]^{3 -}$ and $[F e (C O)_{5}]$ ?

Discussion

1559.	1. If temperature in a first order reaction is doubled, the value of frequency factor will become2. If temperature in a zero order reaction is doubled, the value of frequency factor will become
Answer» 1. If temperature in a first order reaction is doubled, the value of frequency factor will become 2. If temperature in a zero order reaction is doubled, the value of frequency factor will become

Discussion

1560.	The number of hydrogen atoms present in 25.6 gm of sucrose C12H22O11 WHICH HAS MOLAR MASS 342.3 gm is
Answer» The number of hydrogen atoms present in 25.6 gm of sucrose C12H22O11 WHICH HAS MOLAR MASS 342.3 gm is

Discussion

1561.	How to find weather a given compound form intramolecular H bonding or intermolecular H bonding?
Answer» How to find weather a given compound form intramolecular H bonding or intermolecular H bonding?

Discussion

1562.	What are the formulae to find the change in internal energy in isobaric, isochoric, and adiabatic process?
Answer» What are the formulae to find the change in internal energy in isobaric, isochoric, and adiabatic process?

Discussion

1563.	Give the name and formula of the acid salt which gives sodium ions and sulphate ions in solution.
Answer» Give the name and formula of the acid salt which gives sodium ions and sulphate ions in solution.

Discussion

1564.	An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom. (a) In which groups of the periodic table would you expect to find these elements? (b) What type of bond is formed between A and B? (c) Suggest a formula of the compound formed between A and B.
Answer» An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom. (a) In which groups of the periodic table would you expect to find these elements? (b) What type of bond is formed between A and B? (c) Suggest a formula of the compound formed between A and B.

1564.

An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom. (a) In which groups of the periodic table would you expect to find these elements? (b) What type of bond is formed between A and B? (c) Suggest a formula of the compound formed between A and B.

Answer»

An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom.

(a) In which groups of the periodic table would you expect to find these elements?

(b) What type of bond is formed between A and B?

(c) Suggest a formula of the compound formed between A and B.

Discussion

1565.	31 The second IP of which element is maximum ?? 1)lithium 2)oxygen 3)nitrogen 4)fluorine
Answer» 31 The second IP of which element is maximum ?? 1)lithium 2)oxygen 3)nitrogen 4)fluorine

Discussion

1566.	The original colour of potassium dichromate is :
Answer» The original colour of potassium dichromate is :

Discussion

1567.	what is beats and interference?
Answer» what is beats and interference?

Discussion

1568.	Pam Melroy and her crew members were applauded when ________________
Answer» Pam Melroy and her crew members were applauded when ________________

Discussion

1569.	The correct order of following 3d metal oxides, according to their oxidation number is: (a) CrO3(b) Fe2O3(c) MnO2(d) V2O5(e) Cu2O
Answer» The correct order of following 3d metal oxides, according to their oxidation number is: (a) $C r O_{3}$ (b) $F e_{2} O_{3}$ (c) $M n O_{2}$ (d) $V_{2} O_{5}$ (e) $C u_{2} O$

Discussion

1570.	Give equations for the following conversions:(i) Ferric oxide to iron(ii) Aluminium hydroxide to aluminium oxide(iii) Aluminium to aluminium nitride(iv) Aluminium to sodium aluminate
Answer» Give equations for the following conversions: (i) Ferric oxide to iron (ii) Aluminium hydroxide to aluminium oxide (iii) Aluminium to aluminium nitride (iv) Aluminium to sodium aluminate

Discussion

1571.	State a reason why zinc is used in: (a) galvanisation, (b) dry cells, (c) cosmetics?
Answer» State a reason why zinc is used in: (a) galvanisation, (b) dry cells, (c) cosmetics?

1571.

State a reason why zinc is used in: (a) galvanisation, (b) dry cells, (c) cosmetics?

Answer»

State a reason why zinc is used in:

(a) galvanisation, (b) dry cells, (c) cosmetics?

Discussion

1572.	Which of the following processes is not a physical process of concentrating an ore?
Answer» Which of the following processes is not a physical process of concentrating an ore?

Discussion

1573.	47.The ratio of the number of revolution of an electron per second in the 1st shell of hydrogen atom to second shell of He+ ion is?
Answer» 47.The ratio of the number of revolution of an electron per second in the 1st shell of hydrogen atom to second shell of He+ ion is?

Discussion

1574.	A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 32. [N= 14, H=1],
Answer» A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 32. [N= 14, H=1],

1574.

A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 32. [N= 14, H=1],

Answer»

A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass.

Find the molecular formula of the compound if its relative molecular mass is 32. [N= 14, H=1],

Discussion

1575.	Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
Answer» Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.

Discussion

1576.	Q 3/15 Most ionic character is shown by (among thegiven species) 1.NaCl 2.CsCl 3.RbCl 4KCI
Answer» Q 3/15 Most ionic character is shown by (among thegiven species) 1.NaCl 2.CsCl 3.RbCl 4KCI

Discussion

1577.	27. 50kg of nitrogen gas and 10kg of hydrogen gas combine to form ammonia. find number of moles of ammonia limiting reagent
Answer» 27. 50kg of nitrogen gas and 10kg of hydrogen gas combine to form ammonia. find number of moles of ammonia limiting reagent

Discussion

1578.	Give three uses of ethene.
Answer» Give three uses of ethene.

Discussion

1579.	Is phenyl carbanion and carbocation stable? Are they both aromatic? Are they more or less stable than benzyl carbocation and carbanion?
Answer» Is phenyl carbanion and carbocation stable? Are they both aromatic? Are they more or less stable than benzyl carbocation and carbanion?

Discussion

1580.	(a) State the colour of the residue formed when nitrates of1. Calcium 2. Zinc 3. Lead 4. Copper are strongly heated.(b) Give one test each to distinguish between the following pairs of chemicals.1. Zinc nitrate solution and calcium nitrate solution.2. Sodium nitrate solution and sodium chloride solution.3. Iron (III) chloride solution and copper chloride solution.
Answer» (a) State the colour of the residue formed when nitrates of 1. Calcium 2. Zinc 3. Lead 4. Copper are strongly heated. (b) Give one test each to distinguish between the following pairs of chemicals. 1. Zinc nitrate solution and calcium nitrate solution. 2. Sodium nitrate solution and sodium chloride solution. 3. Iron (III) chloride solution and copper chloride solution.

Discussion

1581.	In the formation of the compound XY2, an atom X gives one electron to each Y atom. What is the nature of bond in XY2 ? Draw the electron dot structure of this compound.
Answer» In the formation of the compound $X Y_{2}$ , an atom X gives one electron to each Y atom. What is the nature of bond in $X Y_{2}$ ? Draw the electron dot structure of this compound.

Discussion

1582.	Sodium hydroxide reacts with dilute nitric acid to form a soluble salt. Name this salt.
Answer» Sodium hydroxide reacts with dilute nitric acid to form a soluble salt. Name this salt.

Discussion

1583.	A hydrocarbon chain with molecular formula C7H16 is numbered in four different ways. Identify the correct numbering from the options given below.
Answer» A hydrocarbon chain with molecular formula $C_{7} H_{16}$ is numbered in four different ways. Identify the correct numbering from the options given below.

Discussion

1584.	How could the atomic radius of a noble gas be compared with the other elements in a period?
Answer» How could the atomic radius of a noble gas be compared with the other elements in a period?

Discussion

1585.	The factor not affecting ionisation enthalpy is?
Answer» The factor not affecting ionisation enthalpy is?

Discussion

1586.	What is the meaning of line-concentrated nitric acid renders aluminium passive by forming a protective oxide layer on the surface?
Answer» What is the meaning of line-concentrated nitric acid renders aluminium passive by forming a protective oxide layer on the surface?

Discussion

1587.	The root word for naming a hydrocarbon with 5 carbons is?
Answer» The root word for naming a hydrocarbon with 5 carbons is?

Discussion

1588.	what is the differnce between magnesium ion and magnesium atom
Answer» what is the differnce between magnesium ion and magnesium atom

Discussion

1589.	Which is not obtained when metal carbides react with H2O?
Answer» Which is not obtained when metal carbides react with H₂O?

Discussion

1590.	What is concentration of ore?
Answer» What is concentration of ore?

Discussion

1591.	The ionic-end of soap dissolves in ___ while the carbon chain dissolves in ___.
Answer» The ionic-end of soap dissolves in ___ while the carbon chain dissolves in ___.

Discussion

1592.	How many units cells are there in 1.00 g cube shaped ideal crystal of AB (MW = 60 u) which has a NaCl type lattice. (Take, NA=6×1023)
Answer» How many units cells are there in $1.00 g$ cube shaped ideal crystal of $A B$ (MW = 60 u) which has a $N a C l$ type lattice. (Take, $N_{A} = 6 \times 10^{23}$ )

Discussion

1593.	Choose A, B, C or D to match the descriptions (i) to (v) below. Some alphabets may be repeated.(A) Non-electrolyte, (B) Strong electrolyte, (C) Weak electrolyte, (D) Metallic conductor.(i) Molten ionic compound.(ii) Carbon tetrachloride.(iii) An aluminium wire.(iv) A solution containing solvent molecules, solute molecules and ions formed by the dissociation of solute molecules.(v) A sugar solution with sugar molecules and water molecules.
Answer» Choose A, B, C or D to match the descriptions (i) to (v) below. Some alphabets may be repeated. (A) Non-electrolyte, (B) Strong electrolyte, (C) Weak electrolyte, (D) Metallic conductor. (i) Molten ionic compound. (ii) Carbon tetrachloride. (iii) An aluminium wire. (iv) A solution containing solvent molecules, solute molecules and ions formed by the dissociation of solute molecules. (v) A sugar solution with sugar molecules and water molecules.

Discussion

1594.	Why there is 1/(2)2 in Rydburg formula?
Answer» Why there is 1/(2)2 in Rydburg formula?

Discussion

1595.	how does the naming of hydro carbon take place?
Answer» how does the naming of hydro carbon take place?

Discussion

1596.	Question 1Which of the following groups contain only biodegradable items?1. Glass, flowers and leather2. Grass, wood and plastic3. Fruit-peels, cake and lime-juice4. Cake, wood and grass
Answer» Question 1 Which of the following groups contain only biodegradable items? 1. Glass, flowers and leather 2. Grass, wood and plastic 3. Fruit-peels, cake and lime-juice 4. Cake, wood and grass

Discussion

1597.	if f(x+10) f(x+4) = 0, then f(x) is a periodic function with time period
Answer» if f(x+10) f(x+4) = 0, then f(x) is a periodic function with time period

Discussion

1598.

Four students added a small amount of ethanoic acid to sodium hydrogencarbonate. The gas evolved was tested for its behaviour with burning splinter and lime water. They reported their observations as given below. Student Gas evolved Action on burning splinter Action on lime water A CO2 The flame of splinter extinguishes and gas does not burn Turned milky B SO2 The splinter burns brightly and the gas burns with a pop Turned green C NO2 The gas does not burn but the splinter burns with a hissing sound Turned black D O2 The gas burns with a yellow flame and the splinter extinguishes Turned purple The correct observations have been reported by student:(1) A(2) B(3) C(4) D

Answer» Four students added a small amount of ethanoic acid to sodium hydrogencarbonate. The gas evolved was tested for its behaviour with burning splinter and lime water. They reported their observations as given below.

Student	Gas evolved	Action on burning splinter	Action on lime water
A	CO₂	The flame of splinter extinguishes and gas does not burn	Turned milky
B	SO₂	The splinter burns brightly and the gas burns with a pop	Turned green
C	NO₂	The gas does not burn but the splinter burns with a hissing sound	Turned black
D	O₂	The gas burns with a yellow flame and the splinter extinguishes	Turned purple

The correct observations have been reported by student:

(1) A

(2) B

(3) C

(4) D

Discussion

1599.	Volume of 17g of NH3 at N.T.P. will be:
Answer» Volume of 17g of NH₃ at N.T.P. will be:

Discussion

1600.	The major constituent of biogas is
Answer» The major constituent of biogas is

Discussion

Explore topic-wise InterviewSolutions in .

A six coordinate complex of formula CrCl_2.6H_2O has green colour .A 0.1M solution of the complex when treated with excess of AgNO_3 gave 28.7g of white precipitate the formula of compound would b

How many water molecules are present in one molecule of Epsom salt?7

Out of molatiry,morality,mole fraction of solute ,w/w%,w/v%,find the missing concentration terms in following solution :4.5% w/w glucose solution (density=1.2gm/ml

A current carrying straight wire depends inversely on the distance from it. Explain

What are the holes and what is their role in electrical conductivity?

HOCH2CH2OH on heating with periodic acid gives

The minerals from which the metals are extracted are called ___.

Which of the following statements is/are true for the complexes, [Fe(H2O)6]2+,[Fe(CN)6]3−,[Fe(C2O4)3]3− and [Fe(CO)5]?

1. If temperature in a first order reaction is doubled, the value of frequency factor will become2. If temperature in a zero order reaction is doubled, the value of frequency factor will become

The number of hydrogen atoms present in 25.6 gm of sucrose C12H22O11 WHICH HAS MOLAR MASS 342.3 gm is

How to find weather a given compound form intramolecular H bonding or intermolecular H bonding?

What are the formulae to find the change in internal energy in isobaric, isochoric, and adiabatic process?

Give the name and formula of the acid salt which gives sodium ions and sulphate ions in solution.

An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom. (a) In which groups of the periodic table would you expect to find these elements? (b) What type of bond is formed between A and B? (c) Suggest a formula of the compound formed between A and B.

31 The second IP of which element is maximum ?? 1)lithium 2)oxygen 3)nitrogen 4)fluorine

The original colour of potassium dichromate is :

what is beats and interference?

Pam Melroy and her crew members were applauded when ________________

The correct order of following 3d metal oxides, according to their oxidation number is: (a) CrO3(b) Fe2O3(c) MnO2(d) V2O5(e) Cu2O

Give equations for the following conversions:(i) Ferric oxide to iron(ii) Aluminium hydroxide to aluminium oxide(iii) Aluminium to aluminium nitride(iv) Aluminium to sodium aluminate

State a reason why zinc is used in: (a) galvanisation, (b) dry cells, (c) cosmetics?

Which of the following processes is not a physical process of concentrating an ore?

47.The ratio of the number of revolution of an electron per second in the 1st shell of hydrogen atom to second shell of He+ ion is?

A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 32. [N= 14, H=1],

Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.

Q 3/15 Most ionic character is shown by (among thegiven species) 1.NaCl 2.CsCl 3.RbCl 4KCI

27. 50kg of nitrogen gas and 10kg of hydrogen gas combine to form ammonia. find number of moles of ammonia limiting reagent

Give three uses of ethene.

Is phenyl carbanion and carbocation stable? Are they both aromatic? Are they more or less stable than benzyl carbocation and carbanion?

In the formation of the compound XY2, an atom X gives one electron to each Y atom. What is the nature of bond in XY2 ? Draw the electron dot structure of this compound.

Sodium hydroxide reacts with dilute nitric acid to form a soluble salt. Name this salt.

A hydrocarbon chain with molecular formula C7H16 is numbered in four different ways. Identify the correct numbering from the options given below.

How could the atomic radius of a noble gas be compared with the other elements in a period?

The factor not affecting ionisation enthalpy is?

What is the meaning of line-concentrated nitric acid renders aluminium passive by forming a protective oxide layer on the surface?

The root word for naming a hydrocarbon with 5 carbons is?

what is the differnce between magnesium ion and magnesium atom

Which is not obtained when metal carbides react with H2O?

What is concentration of ore?

The ionic-end of soap dissolves in ___ while the carbon chain dissolves in ___.

How many units cells are there in 1.00 g cube shaped ideal crystal of AB (MW = 60 u) which has a NaCl type lattice. (Take, NA=6×1023)

Why there is 1/(2)2 in Rydburg formula?

how does the naming of hydro carbon take place?

Question 1Which of the following groups contain only biodegradable items?1. Glass, flowers and leather2. Grass, wood and plastic3. Fruit-peels, cake and lime-juice4. Cake, wood and grass

if f(x+10) f(x+4) = 0, then f(x) is a periodic function with time period

Volume of 17g of NH3 at N.T.P. will be:

The major constituent of biogas is

The ionic-end of soap dissolves in _ while the carbon chain dissolves in _.