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Recent questions tagged class11
Questions
If sides of $\bigtriangleup ABC \;(a, b, c)$ are in AP, $cot\;{\large\frac{c}{2}}$ equals
jeemain
math
class11
ch9
sequences-and-series
difficult
arithmetic-progression
q191
asked
Jan 23, 2014
by
yamini.v
1
answer
If AM and GM of two numbers are in ratio $p : q$, then the ratio of two numbers is
jeemain
math
class11
ch9
sequences-and-series
difficult
relationship-between-ap-and-gm
q190
asked
Jan 23, 2014
by
yamini.v
1
answer
The temperature at which the most probably speed of oxygen is equal to the rms velocity of hydrogen at NTP is?
speed-of-molecules
easy
jeemain
physics
kinetic-theory-of-gases
class11
ch13
kinetic-theory-of-an-ideal-gas
kinetic-interpretation-of-temperature
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
The temperature at which the velocity of Helium is four times the velocity of Hydrogen at NTP is?
speed-of-molecules
easy
jeemain
physics
kinetic-theory-of-gases
class11
ch13
kinetic-theory-of-an-ideal-gas
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
The contrapositive of $ (p V q) \Rightarrow r$ is
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q19
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Which of the following cannot be an expression for density of an ideal gas?
molecular-nature-of-matter
jeemain
physics
kinetic-theory-of-gases
class11
ch13
behaviour-of-gases
ideal-gas-law
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
Given $\large\frac{1}{1^4}+\large\frac{1}{2^4}+\large\frac{1}{3^4}$+.....$\infty$ = $\large\frac{{\pi}^{4}}{90}$, then the value of $\large\frac{1}{1^4}+\large\frac{1}{3^4}+\large\frac{1}{5^4}$+....$\infty$ is
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q189
asked
Jan 23, 2014
by
yamini.v
1
answer
An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Then the temperature at which the sample of gas will weight m is given by which of the following options?
molecular-nature-of-matter
jeemain
physics
kinetic-theory-of-gases
class11
ch13
behaviour-of-gases
ideal-gas-law
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. Then the number of molecules in the sample is?
molecular-nature-of-matter
jeemain
physics
kinetic-theory-of-gases
class11
ch13
behaviour-of-gases
ideal-gas-law
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
If a,b,c are the sides of a triangle, then the statement, “$ \large\frac{1}{(b+c)},\: \large\frac{1}{(c+a)},\: \large\frac{1}{(a+b)}$ are also the sides of the triangle”, is
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q18
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
For an ideal gas, average kinetic energy per degree of freedom is?
jeemain
physics
kinetic-theory-of-gases
class11
ch13
degrees-of-freedom
kinetic-interpretation-of-temperature
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
A bubble of an ideal gas is trapped in a liquid filled in a container. As the bubble moves upwards besides the buoyancy force, the forces acting on it are:
kinetic-theory-of-an-ideal-gas
jeemain
physics
kinetic-theory-of-gases
class11
ch13
pressure-of-an-ideal-gas
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
Which of the following quantities is larger for a diatomic has than that of a monoatomic gas?
jeemain
physics
kinetic-theory-of-gases
class11
ch13
easy
specific-heat-capacity
atomicity
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
If $a_{1}, a_{2}, a_{3},.....$ are in HP and $f (k)$ = $\displaystyle\sum_{r=1}^{n}\;a_{r}-a_{k}$, then $\large\frac{a_{1}}{f (1)}$, $\large\frac{a_{2}}{f (2)}$, $\large\frac{a_{3}}{f (3)}$,...,$\large\frac{a_{n}}{f (n)}$ are in
jeemain
math
class11
ch9
sequences-and-series
difficult
harmonic-progression
q188
asked
Jan 23, 2014
by
yamini.v
1
answer
A survey shows that 63% of the Americans like cheese whereas 76% like apples. The statement, “x% of Americans like both cheese and apples” is true for
jeemain
math
mathematical-reasoning
class11
ch14
difficult
statements
q17
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Given the following statements, choose the correct answer:
jeemain
physics
kinetic-theory-of-gases
class11
ch13
degrees-of-freedom
medium
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
$a_{1}=50$ and $a_{1}+a_{2}+....+a_{n}=n^2a_{n}$ $\forall\;n \geq 1$, value of $a_{50}$ equal to
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q187
asked
Jan 23, 2014
by
yamini.v
1
answer
$H_2O_2$ oxidises $H_2S$ to
jeemain
chemistry
class11
hydrogen
unit9
q61
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
If p : It rains today. q : I go to school. r : I shall meet my friends. s : I shall go for a movie. Then which of the following is the proportionate representation of the statement, If it does not rain or if I do not go to school, then I shall meet my friends and go for a movie.
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q16
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
$PbS+H_2O_2\rightarrow H_2O$+________
jeemain
chemistry
class11
hydrogen
unit9
q60
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
If 1 , 3 , 8 are first three terms of an arithmetic - geometric progression (with +ve common difference ) , the sum of next three terms is :
jeemain
math
class11
ch9
sequences-and-series
difficult
arithmetic-progression
q186
asked
Jan 23, 2014
by
yamini.v
1
answer
When $H_2O_2$ reacts with chlorine the product obtained is
jeemain
chemistry
class11
hydrogen
unit9
q59
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Consider the statement $ \log \bigg(\large\frac{5c}{a} \bigg),\: \log \bigg(\large\frac{3b}{5c} \bigg)$ and $ \log \bigg(\large\frac{a}{3b} \bigg)$ are in AP, where a,b,c are in GP. The statement is true only if a,b,c are the lengths of sides of
jeemain
math
mathematical-reasoning
class11
ch14
difficult
statements
q15
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Decomposition of $H_2O_2$ is prevented by adding
jeemain
chemistry
class11
hydrogen
unit9
q58
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
$CO+H_2$ is known as
jeemain
chemistry
class11
hydrogen
unit9
q57
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which of the following statements is true about an ideal gas?
jeemain
physics
kinetic-theory-of-gases
class11
ch13
kinetic-theory-of-an-ideal-gas
easy
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
The proposition $ (p \Rightarrow \: ^{\sim}p) \wedge (^{\sim}p \Rightarrow p)$ is a
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q14
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Sum of n terms of the series $\large\frac{1}{4}+\large\frac{7}{16}+\large\frac{37}{64}+\large\frac{175}{256}$+... is
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q185
asked
Jan 23, 2014
by
yamini.v
1
answer
The volume of oxygen liberated at STP when 10ml of 15v-$H_2O_2$ decomposes
jeemain
chemistry
class11
hydrogen
unit9
q56
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which of the following statements is true about an ideal gas?
kinetic-theory-of-an-ideal-gas
jeemain
physics
kinetic-theory-of-gases
class11
ch13
easy
asked
Jan 23, 2014
by
balaji.thirumalai
0
answers
One ml of $H_2O_2$ solution gives 50ml of $O_2$ at NTP,so it is
jeemain
chemistry
class11
hydrogen
unit9
q55
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which one of the following is a fallacy?
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q13
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
A gas is found to obey the law $P =kV^{-2}$. The initial volume is $V_0$. If the gas expands to $4 V_0$ and if the initial temperature is $T_0$ what is its final temperature?
jeemain
physics
kinetic-theory-of-gases
class11
ch13
behaviour-of-gases
ideal-gas-law
medium
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
If $ \phi(x) = f(x) + f(1-x), f’(x)<0 \: for\: 0 \leq x \leq 1$, then the tautology among the following is
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q12
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Sum of the series $\;\large\frac{2}{5}+\large\frac{3}{5^2}+\large\frac{4}{5^3}+\large\frac{2}{5^4}+\large\frac{3}{5^5}+\large\frac{4}{5^6}+...$ equals:
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q184
asked
Jan 23, 2014
by
yamini.v
1
answer
A gas is found to obey the law $P =kV^a$. The initial temperature and volume are $V_0$. If the gas expands to $b V_0$ the sign of the internal energy change depends on which of the following? (Note: $\gamma$ is the adiabatic index)
jeemain
physics
kinetic-theory-of-gases
class11
ch13
kinetic-theory-of-an-ideal-gas
kinetic-interpretation-of-temperature
difficult
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
The % of by weight of hydrogen $H_2O_2$ is
jeemain
chemistry
class11
hydrogen
unit9
q54
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The approx concentration of $H_2O_2$ perhydrol is
jeemain
chemistry
class11
hydrogen
unit9
q53
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
A gas is found to obey the law $P^3V =$ constant. The initial temperature and volume are $T_0$ and $V_0$. If the gas expands to $2 V_0$ what happens to the internal energy?
jeemain
physics
kinetic-theory-of-gases
class11
ch13
medium
behaviour-of-gases
ideal-gas-law
asked
Jan 23, 2014
by
balaji.thirumalai
1
answer
The proposition $ p \Rightarrow ^{\sim}(p \wedge\: ^{\sim}q)$ is
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q11
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
$\sqcap_{n=2}^{\infty}\;\large\frac{n^3-1}{n^3+1}$ equals
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q183
asked
Jan 23, 2014
by
yamini.v
1
answer
S1 : The function $f(x)=|x|$ is not one-one.\[\] S2: The negative real numbers are not the images of any real numbers. \[\] If the statement S1 holds true then,
jeemain
math
mathematical-reasoning
class11
ch14
difficult
statements
q10
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Weight of $H_2O_2$ present in 560ml of 20vol $H_2O_2$ solution is approx
jeemain
chemistry
class11
hydrogen
unit9
q52
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The first two terms of a geometric progression add up to 12. The terms of the G.P. are alternately positive and negative.The statement - The sum of the third and the fourth terms is 48 holds true for the first term being
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q9
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
The number of electrons involved in the manufacture of 1mole of $H_2O_2$ from 50% of $H_2SO_4$
jeemain
chemistry
class11
hydrogen
unit9
q51
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume strength of $1N-H_2O_2$ solution is
jeemain
chemistry
class11
hydrogen
unit9
q50
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
50ml of certain sample of $H_2O_2$ gives 1200ml of $O_2$ at STP.The volume strength of $H_2O_2$ is
jeemain
chemistry
class11
hydrogen
unit9
q49
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
If $S_{n}=\large{1}{6}\;n(n+1)(n+2)$ $\forall\;n\;\geq\;1$, then $\displaystyle\lim_{n \to \infty}\;\displaystyle\sum_{r=1}^{n}\;\large\frac{1}{a_{r}}$ equals
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q182
asked
Jan 23, 2014
by
yamini.v
1
answer
Strength of $2N$ $H_2O_2$ solution is approx
jeemain
chemistry
class11
hydrogen
unit9
q48
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume of oxygen liberated at STP when 100ml of 15 volume $H_2O_2$ decomposes
jeemain
chemistry
class11
hydrogen
unit9
q47
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
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