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Recent questions tagged bookproblem
Questions
What role does the molecular interaction play in a solution of alcohol and water?
cbse
class12
chemistry
ch2
solutions
sec-a
medium
bookproblem
q2.10
asked
Aug 4, 2014
by
sreemathi.v
1
answer
A sample of drinking water was found to be severely contaminated with chloroform $(CHCl_3$) supposed to be a carcinogen. The level of contamination was 15 ppm (by mass): determine the molality of chloroform in the water sample.
cbse
class12
chemistry
ch2
solutions
sec-b
medium
bookproblem
q2.9-ii
asked
Aug 4, 2014
by
sreemathi.v
1
answer
A sample of drinking water was found to be severely contaminated with chloroform $(CHCl_3$) supposed to be a carcinogen. The level of contamination was 15 ppm (by mass): express this in percent by mass
cbse
class12
chemistry
ch2
solutions
sec-a
easy
bookproblem
q2.9-i
asked
Aug 4, 2014
by
sreemathi.v
1
answer
An antifreeze solution is prepared from 222.6 g of ethylene glycol $(C_2H_6O_2$) and 200 g of water. Calculate the molality of the solution. If the density of the solution is $1.072 g mL^{–1}$, then what shall be the molarity of the solution?
cbse
class12
chemistry
ch2
solutions
sec-b
medium
bookproblem
q2.8
asked
Aug 4, 2014
by
sreemathi.v
1
answer
A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.
cbse
class12
chemistry
ch2
solutions
sec-b
easy
bookproblem
q2.7
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Write the negation of "For every positive real number $x$, the number $x+1$ is also positive."
cbse
class11
ch14
mathematical-reasoning
bookproblem
exercise-misc14
sec-a
easy
q1-1
asked
Aug 4, 2014
by
rvidyagovindarajan_1
1
answer
Write the negation of "For every positive real number $x$, the num ber $x+1$ is also positive."
cbse
class11
ch14
mathematical-reasoning
bookproblem
exercise-misc14
sec-a
easy
q1-1
asked
Aug 4, 2014
by
rvidyagovindarajan_1
0
answers
How many mL of 0.1 M HCl are required to react completely with 1 g mixture of $Na_2CO_3$ and $NaHCO_3$ containing equimolar amounts of both?
cbse
class12
chemistry
ch2
solutions
sec-c
difficult
bookproblem
q2.6
asked
Aug 4, 2014
by
sreemathi.v
1
answer
A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? If the density of solution is $1.2 g mL^{–1}$, then what shall be the molarity of the solution?
cbse
class12
chemistry
ch2
solutions
sec-c
difficult
bookproblem
q2.5
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is $1.504 g mL^{–1}$?
cbse
class12
chemistry
ch2
solutions
sec-b
medium
bookproblem
q2.4
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Define the following term : Mass percentage
cbse
class12
chemistry
ch2
solutions
sec-b
easy
bookproblem
q2.3-iv
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Define the following term : Molarity
cbse
class12
chemistry
ch2
solutions
sec-b
easy
bookproblem
q2.3-iii
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Define the following term : Molality
cbse
class12
chemistry
ch2
solutions
sec-b
easy
bookproblem
q2.3-ii
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Define the following term : Mole fraction
cbse
class12
chemistry
ch2
solutions
sec-b
easy
bookproblem
q2.3-i
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Give an example of a solid solution in which the solute is a gas.
cbse
class12
chemistry
ch2
solutions
sec-a
easy
bookproblem
q2.2
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
cbse
class12
chemistry
ch2
solutions
sec-b
medium
bookproblem
q2.1
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Explain the following with suitable examples: 12-16 and 13-15 group compounds.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
difficult
bookproblem
q1.26-v
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Explain the following with suitable examples: Antiferromagnetism
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.26-iv
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Explain the following with suitable examples: Ferrimagnetism
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
difficult
bookproblem
q1.26-iii
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Explain the following with suitable examples: Paramagnetism
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.26-ii
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Explain the following with suitable examples: Ferromagnetism
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.26-i
asked
Jul 31, 2014
by
sreemathi.v
1
answer
If NaCl is doped with $10^{–3}$ mol % of $SrCl_2$, what is the concentration of cation vacancies?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.25
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Aluminium crystallises in a cubic close-packed structure. Its metallic radius is 125 pm.How many unit cells are there in $1.00cm^3$ of aluminium?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
difficult
bookproblem
q1.24-ii
asked
Jul 31, 2014
by
sreemathi.v
1
answer
Aluminium crystallises in a cubic close-packed structure. Its metallic radius is 125 pm.What is the length of the side of the unit cell?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
difficult
bookproblem
q1.24-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain the following term with suitable examples: F-centres
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.23-iv
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain the following term with suitable examples: Interstitials
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.23-iii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain the following term with suitable examples: Frenkel defect
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.23-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain the following term with suitable examples: Schottky defect
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.23-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
In terms of band theory, what is the difference between a conductor and a semiconductor
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
medium
bookproblem
q1.22-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
In terms of band theory, what is the difference between a conductor and an insulator
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
medium
bookproblem
q1.22-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Gold (atomic radius = 0.144 nm) crystallises in a face-centred unit cell. What is the length of a side of the cell?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.21
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Classify the following as being either a p-type or a n-type semiconductor: B doped with Si
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.20-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Classify the following as being either a p-type or a n-type semiconductor: Ge doped with In
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.20-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Ferric oxide crystallises in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. Derive the formula of the ferric oxide.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
medium
bookproblem
q1.19
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Non-stoichiometric cuprous oxide, $Cu_2O$ can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2:1. Can you account for the fact that this substance is a p-type semiconductor?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.18
asked
Jul 30, 2014
by
sreemathi.v
1
answer
What is a semiconductor? Describe the two main types of semiconductors and contrast their conduction mechanism.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.17
asked
Jul 30, 2014
by
sreemathi.v
2
answers
Analysis shows that nickel oxide has the formula $Ni_{0.98}O_{1.00}$. What fractions of nickel exist as $Ni^{2+}$ and $Ni^{3+}$ ions?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
easy
bookproblem
q1.16
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Copper crystallises into a fcc lattice with edge length $3.6\times 10^{-8}$cm.Show that the calculated density is in agreement with its measured value of $8.92gcm^{-3}$.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.15
asked
Jul 30, 2014
by
sreemathi.v
1
answer
If the radius of the octahedral void is r and radius of the atoms in close- packing is R, derive relation between r and R.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
difficult
bookproblem
q1.14
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Niobium crystallises in body-centred cubic structure. If density is $8.55 g cm^{–3}$, calculate atomic radius of niobium using its atomic mass 93 u.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.13
asked
Jul 30, 2014
by
sreemathi.v
1
answer
A cubic solid is made of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body-centre. What is the formula of the compound? What are the coordination numbers of P and Q?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.12
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Silver crystallises in fcc lattice.If edge length of the cell is $4.077\times 10^{-8}cm$ and density is $10.5gcm^{-3}$.Calculate the atomic mass of silver.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-a
easy
bookproblem
q1.11
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Calculate the efficiency of packing in case of a metal crystals for : face-centered cubic (with the assumptions that atoms are touching each other)
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
medium
bookproblem
q1.10-iii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Calculate the efficiency of packing in case of a metal crystals for : body-centered cubic
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
medium
bookproblem
q1.10-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Calculate the efficiency of packing in case of a metal crystals for : simple cubic
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-c
medium
bookproblem
q1.10-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain : Ionic solids are hard and brittle
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
medium
bookproblem
q1.9-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
Explain : The basis of similarities and differences between metallic and ionic crystals.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
medium
bookproblem
q1.9-i
asked
Jul 30, 2014
by
sreemathi.v
1
answer
How many lattice points are there in one unit cell of each of the following lattice?Body-centred
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.8-iii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
How many lattice points are there in one unit cell of each of the following lattice?Face-centred tetragonal
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.8-ii
asked
Jul 30, 2014
by
sreemathi.v
1
answer
How many lattice points are there in one unit cell of each of the following lattice?Face-centred cubic
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
bookproblem
q1.8-i
asked
Jul 29, 2014
by
sreemathi.v
1
answer
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