10223 + Interview Questions in Chemistry Page 102 InterviewSolution

5051.	How do gases exert pressure?
Answer» How do gases exert pressure?

Discussion

5052.	Why does the water left out in a mud pot becomes cool after some time?
Answer» Why does the water left out in a mud pot becomes cool after some time?

Discussion

5053.	Question 2 (iii)Write down the names of compounds represented by the following formulae:(iii) K2SO4
Answer» Question 2 (iii) Write down the names of compounds represented by the following formulae: $(i i i) K_{2} S O_{4}$

Discussion

5054.	What do the following abbreviations stand for? 1- O 2- 2O 3-O2 4-3O2
Answer» What do the following abbreviations stand for? 1- O 2- 2O 3-O2 4-3O2

5054.

What do the following abbreviations stand for? 1- O 2- 2O 3-O2 4-3O2

Answer»

What do the following abbreviations stand for?

1- O

2- 2O

3-O2

4-3O2

Discussion

5055.	Hydrogen is the non metal why it's placed in alkali metals so it should be placed in carbon family ? ?? Sir or mam you can explain details because I collapsed in this
Answer» Hydrogen is the non metal why it's placed in alkali metals so it should be placed in carbon family ? ?? Sir or mam you can explain details because I collapsed in this

Discussion

5056.	Explain the law of conservation of mass
Answer» Explain the law of conservation of mass

Discussion

5057.	What is projectile motion?
Answer» What is projectile motion?

Discussion

5058.	Find no. of resonating structure of anthracene and napthlene
Answer» Find no. of resonating structure of anthracene and napthlene

Discussion

5059.	Which element replaced eka-aluminium in the modern periodic table?
Answer» Which element replaced eka-aluminium in the modern periodic table?

Discussion

5060.	Explain compound umbel with diagram
Answer» Explain compound umbel with diagram

Discussion

5061.	Choose the incorrect statement in view of Mendeleev's Periodic Table.
Answer» Choose the incorrect statement in view of Mendeleev's Periodic Table.

Discussion

5062.	What is the hybridisation of N in SiH3−NCO ?
Answer» What is the hybridisation of $N i n S i H_{3} - N C O$ ?

Discussion

5063.	Choose the correct option.Statement 1: Plasma and BEC are the two modern states of matter.Statement 2: The difference in various states of matter is due to the difference in the distances between their constituent particles.
Answer» Choose the correct option. Statement 1: Plasma and BEC are the two modern states of matter. Statement 2: The difference in various states of matter is due to the difference in the distances between their constituent particles.

Discussion

5064.	The element whose electronic configuration is 1s2, 2s2, 2p6, 3s2 is a/an
Answer» The element whose electronic configuration is $1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}$ is a/an

Discussion

5065.	The maximum number of electrons that can be accomodated in an orbit is given by the formula _______ where n is the number of orbit.
Answer» The maximum number of electrons that can be accomodated in an orbit is given by the formula _______ where n is the number of orbit.

Discussion

5066.	who made the periodic table?
Answer» who made the periodic table?

Discussion

5067.	What are reversible and irreversible reactions?
Answer» What are reversible and irreversible reactions?

Discussion

5068.	a radioactive element 90X238 decays into 83Y222,then the number of beta negative particles emitted are?
Answer» a radioactive element 90X238 decays into 83Y222,then the number of beta negative particles emitted are?

Discussion

5069.	Given that the percentage abundance of the isotope 2010Ne, is 90% and that of the isotope 2210Ne is 10%, calculate the average atomic mass of neon.
Answer» Given that the percentage abundance of the isotope $_{10}^{20} N e$ , is 90% and that of the isotope $_{10}^{22} N e$ is 10%, calculate the average atomic mass of neon.

Discussion

5070.	Correct the following incorrect statements:1. The first shell in Bohr's atomic model is represented by the letter "A".2. The maximum number of electrons that can go in the shell "N" is 48.
Answer» Correct the following incorrect statements: 1. The first shell in Bohr's atomic model is represented by the letter "A". 2. The maximum number of electrons that can go in the shell "N" is $48$ .

Discussion

5071.	Is converting of wood into paper a physical change or a chemical change?
Answer» Is converting of wood into paper a physical change or a chemical change?

Discussion

5072.	The compound which cannot act as both oxidising and reducing agent is
Answer» The compound which cannot act as both oxidising and reducing agent is

5072.

The compound which cannot act as both oxidising and reducing agent is

Answer»

The compound which cannot act as both oxidising and reducing agent is

Discussion

5073.	If in a mixed oxide of elements A and B, the oxide ions are arranged in CCP lattice and cations (A2+) occupy 12.5% of tetrahedral voids and cation (B3+) occupy 50% octahedral voids, the formula of the oxide is
Answer» If in a mixed oxide of elements A and B, the oxide ions are arranged in CCP lattice and cations (A2+) occupy 12.5% of tetrahedral voids and cation (B3+) occupy 50% octahedral voids, the formula of the oxide is

Discussion

5074.	According to my textbook Air is a homogeneous mixtur. Why?
Answer» According to my textbook Air is a homogeneous mixtur. Why?

Discussion

5075.	Question 2 (v)Write down the names of compounds represented by the following formulae:(v) CaCO3
Answer» Question 2 (v) Write down the names of compounds represented by the following formulae: $(v) C a C O_{3}$

Discussion

5076.	A water sample has a pH of 9.25. The concentration of hydroxyl ions in the water sample is
Answer» A water sample has a pH of 9.25. The concentration of hydroxyl ions in the water sample is

Discussion

5077.	Match the correct order of elements to corresponding to the atomic structure.
Answer» Match the correct order of elements to corresponding to the atomic structure.

Discussion

5078.	36. For per gram of reactant the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions? (Given atomic wt Cr= 52 u Ba = 137 u) 1 (NH4)2 Cr2O7(s) > N2 (g)+4H2O (g)+Cr2O3 2 2NH3NO3 (s) > 2N2 (g) +4H2O (g)+O2 (g) 3 Ba (N3)2 (s) >Ba (s)+3N2 (g) 4 2NH3 > N2 (g)+3H2 (g)
Answer» 36. For per gram of reactant the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions? (Given atomic wt Cr= 52 u Ba = 137 u) 1 (NH4)2 Cr2O7(s) > N2 (g)+4H2O (g)+Cr2O3 2 2NH3NO3 (s) > 2N2 (g) +4H2O (g)+O2 (g) 3 Ba (N3)2 (s) >Ba (s)+3N2 (g) 4 2NH3 > N2 (g)+3H2 (g)

Discussion

5079.	37. A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, yhe other is at: (1) 743 nm (2) 518 nm (3) 1035 nm (4) 325 nm
Answer» 37. A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, yhe other is at: (1) 743 nm (2) 518 nm (3) 1035 nm (4) 325 nm

Discussion

5080.	(a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory.(b) Name an acid-base indicator extracted from lichen.(c) What colour does the methyl orange turn to when put in an acidic solution ?
Answer» (a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory. (b) Name an acid-base indicator extracted from lichen. (c) What colour does the methyl orange turn to when put in an acidic solution ?

5080.

(a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory.(b) Name an acid-base indicator extracted from lichen.(c) What colour does the methyl orange turn to when put in an acidic solution ?

Answer»

(a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory.

(b) Name an acid-base indicator extracted from lichen.

(c) What colour does the methyl orange turn to when put in an acidic solution ?

Discussion

5081.	Hydrogen is a_____ gas
Answer» Hydrogen is a_____ gas

Discussion

5082.	The global race for Lithium is intensifying in the wake of the growing use of the mineral in various electronic appliances especially batteries. In this context, provide an account of the distribution of Lithium around the world and what steps the Government of India has taken to secure access to this strategicmineral.?
Answer» The global race for Lithium is intensifying in the wake of the growing use of the mineral in various electronic appliances especially batteries. In this context, provide an account of the distribution of Lithium around the world and what steps the Government of India has taken to secure access to this strategicmineral.?

Discussion

5083.	Which gas oxygen or nitrogen gets liquified first on cooling air
Answer» Which gas oxygen or nitrogen gets liquified first on cooling air

Discussion

5084.	The polymer divinyl acetylene is obtained from the monomer C2H2 C3H6 C6H6 C4H4
Answer» The polymer divinyl acetylene is obtained from the monomer C2H2 C3H6 C6H6 C4H4

Discussion

5085.	The English name of an element is potassium, its Latin name will be:
Answer» The English name of an element is potassium, its Latin name will be:

Discussion

5086.	200g of water contains 9g of urea. What is the boiling point of the solution ?(1) 100^° C(2) 99.52^° C(3) 100.39^° C(4) 101.94^° C
Answer» 200g of water contains 9g of urea. What is the boiling point of the solution ?(1) 100^° C(2) 99.52^° C(3) 100.39^° C(4) 101.94^° C

Discussion

5087.	Mention the basic tendency of an atom which makes it to combine with other atoms.
Answer» Mention the basic tendency of an atom which makes it to combine with other atoms.

Discussion

5088.	An ideal liquid having length of liquid column I is contain in V-shape take as shown. If liquid is displaced, hen its time period is
Answer» An ideal liquid having length of liquid column I is contain in V-shape take as shown. If liquid is displaced, hen its time period is

Discussion

5089.	does the level of water rise when we add a spoon of salt to a beaker containing 1000 ml of water?
Answer» does the level of water rise when we add a spoon of salt to a beaker containing 1000 ml of water?

Discussion

5090.	Shortcut to learn periodic table
Answer» Shortcut to learn periodic table

Discussion

5091.	27. Is one mole is greater than atom as well as molecule
Answer» 27. Is one mole is greater than atom as well as molecule

Discussion

5092.	Why does steam at 100 degrees celsius cause more severe burns than boiling water at 100 degrees celsius ?
Answer» Why does steam at 100 degrees celsius cause more severe burns than boiling water at 100 degrees celsius ?

Discussion

5093.	Find the mole fraction of glucose in aqueous solution if morality of solution is 13.86
Answer» Find the mole fraction of glucose in aqueous solution if morality of solution is 13.86

Discussion

5094.	26. why melting and boiling point in liqid is lower then the solids ?
Answer» 26. why melting and boiling point in liqid is lower then the solids ?

Discussion

5095.	How sol, solution, and suspension are different from each other? [5 MARKS]
Answer» How sol, solution, and suspension are different from each other? [5 MARKS]

Discussion

5096.	80.which is the most highly reactive radioactive element
Answer» 80.which is the most highly reactive radioactive element

Discussion

5097.	(a) The atomic number of sodium is 11. What is the number of electrons in Na+? (b) the atomic number of chlorine is 17. What is the number of electrons in Cl−?
Answer» (a) The atomic number of sodium is 11. What is the number of electrons in $N a^{+}$ ? (b) the atomic number of chlorine is 17. What is the number of electrons in $C l^{-}$ ?

Discussion

5098.	What are the two physical properties of methane? [3 Marks]
Answer» What are the two physical properties of methane? [3 Marks]

Discussion

5099.	During an experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water. Ramesh dissolved 10 g of sugar in 100 g of water while Sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution.(a) Are the two solutions of the same concentration?(b) Compare the mass % of the two solutions.
Answer» During an experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water. Ramesh dissolved 10 g of sugar in 100 g of water while Sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution. (a) Are the two solutions of the same concentration? (b) Compare the mass % of the two solutions.

Discussion

5100.	Which of the following is/are true regarding hydrogen-powered fuel cells?
Answer» Which of the following is/are true regarding hydrogen-powered fuel cells?

Discussion

Explore topic-wise InterviewSolutions in .

How do gases exert pressure?

Why does the water left out in a mud pot becomes cool after some time?

Question 2 (iii)Write down the names of compounds represented by the following formulae:(iii) K2SO4

What do the following abbreviations stand for? 1- O 2- 2O 3-O2 4-3O2

Hydrogen is the non metal why it's placed in alkali metals so it should be placed in carbon family ? ?? Sir or mam you can explain details because I collapsed in this

Explain the law of conservation of mass

What is projectile motion?

Find no. of resonating structure of anthracene and napthlene

Which element replaced eka-aluminium in the modern periodic table?

Explain compound umbel with diagram

Choose the incorrect statement in view of Mendeleev's Periodic Table.

What is the hybridisation of N in SiH3−NCO ?

Choose the correct option.Statement 1: Plasma and BEC are the two modern states of matter.Statement 2: The difference in various states of matter is due to the difference in the distances between their constituent particles.

The element whose electronic configuration is 1s2, 2s2, 2p6, 3s2 is a/an

The maximum number of electrons that can be accomodated in an orbit is given by the formula _______ where n is the number of orbit.

who made the periodic table?

What are reversible and irreversible reactions?

a radioactive element 90X238 decays into 83Y222,then the number of beta negative particles emitted are?

Given that the percentage abundance of the isotope 2010Ne, is 90% and that of the isotope 2210Ne is 10%, calculate the average atomic mass of neon.

Correct the following incorrect statements:1. The first shell in Bohr's atomic model is represented by the letter "A".2. The maximum number of electrons that can go in the shell "N" is 48.

Is converting of wood into paper a physical change or a chemical change?

The compound which cannot act as both oxidising and reducing agent is

If in a mixed oxide of elements A and B, the oxide ions are arranged in CCP lattice and cations (A2+) occupy 12.5% of tetrahedral voids and cation (B3+) occupy 50% octahedral voids, the formula of the oxide is

According to my textbook Air is a homogeneous mixtur. Why?

Question 2 (v)Write down the names of compounds represented by the following formulae:(v) CaCO3

A water sample has a pH of 9.25. The concentration of hydroxyl ions in the water sample is

Match the correct order of elements to corresponding to the atomic structure.

37. A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, yhe other is at: (1) 743 nm (2) 518 nm (3) 1035 nm (4) 325 nm

(a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory.(b) Name an acid-base indicator extracted from lichen.(c) What colour does the methyl orange turn to when put in an acidic solution ?

Hydrogen is a_____ gas

Which gas oxygen or nitrogen gets liquified first on cooling air

The polymer divinyl acetylene is obtained from the monomer C2H2 C3H6 C6H6 C4H4

The English name of an element is potassium, its Latin name will be:

200g of water contains 9g of urea. What is the boiling point of the solution ?(1) 100^° C(2) 99.52^° C(3) 100.39^° C(4) 101.94^° C

Mention the basic tendency of an atom which makes it to combine with other atoms.

An ideal liquid having length of liquid column I is contain in V-shape take as shown. If liquid is displaced, hen its time period is

does the level of water rise when we add a spoon of salt to a beaker containing 1000 ml of water?

Shortcut to learn periodic table

27. Is one mole is greater than atom as well as molecule

Why does steam at 100 degrees celsius cause more severe burns than boiling water at 100 degrees celsius ?

Find the mole fraction of glucose in aqueous solution if morality of solution is 13.86

26. why melting and boiling point in liqid is lower then the solids ?

How sol, solution, and suspension are different from each other? [5 MARKS]

80.which is the most highly reactive radioactive element

(a) The atomic number of sodium is 11. What is the number of electrons in Na+? (b) the atomic number of chlorine is 17. What is the number of electrons in Cl−?

What are the two physical properties of methane? [3 Marks]

Which of the following is/are true regarding hydrogen-powered fuel cells?