Recent questions tagged q2

Calculate the volume occupied by 7g $N_2$ at $27^{\large\circ}$ and 750mm of Hg.

asked Feb 11, 2014 by sharmaaparna1

1 answer

Find the area bounded by curves $(x - 1)^2 + y^2 = 1$ and $x^2 + y^2 = 1.$

asked Feb 4, 2014 by rvidyagovindarajan_1

1 answer

Determine the value of $\lambda$ so that 1 is the slope of line passing through (1,1) and $(\lambda,4)$?

asked Feb 3, 2014 by sreemathi.v

1 answer

Assertion : For the following equation degree $\large\frac{d^4}{dx^4} $$ +\sin \bigg ( \large\frac{d^2y}{dx^2}\bigg)=0$ Reason : Order of DE is the order of highest differentiate coefficient occurring in the equation

asked Jan 31, 2014 by meena.p

1 answer

Ligand in a metal carbonyl complex

asked Jan 31, 2014 by sreemathi.v

1 answer

The catalyst used in manufacture of $HNO_3$ is

asked Jan 29, 2014 by sreemathi.v

1 answer

The hardest alkali metal is

asked Jan 27, 2014 by sreemathi.v

1 answer

Fermi energy is

asked Jan 27, 2014 by meena.p

1 answer

What is true about the statement "If two angles are right angles, the angles have equal measure" and its converse "If two angles have equal measure then the two angles are right angles"?

asked Jan 22, 2014 by thanvigandhi_1

1 answer

An air bubble is at the bottom of the lake at $40m$ deep where the temperature is $6^{\circ}C$. The bubble rises to the surface where the temperature is $20^{\circ}C$ If it's volume at the bottom is $50\;cm^3$, what is its volume at the surface?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Hydrogen finds a place in VII group of periodic table because

asked Jan 22, 2014 by sreemathi.v

1 answer

Which of the following is primary pollutant(s)

asked Jan 20, 2014 by sreemathi.v

1 answer

Which of the following options indicate the correct contrapositive and converse respectively of the Statement: If x is a prime number, then x is odd.

asked Jan 18, 2014 by thanvigandhi_1

1 answer

Which of the following sentences is a statement?

asked Jan 17, 2014 by thanvigandhi_1

1 answer

A 100W power source emits green light at a wavelength $\lambda=5000\overset{\circ}{A}$. How many photons per minute are emitted by the source?

asked Jan 9, 2014 by sreemathi.v

1 answer

If A,B,C are three events with $P(C)=0$ then $ P(A \cup B \cup C )=$

asked Jan 2, 2014 by thanvigandhi_1

1 answer

Let A and B be two events such that $ P ( A') = 0.3 \: P(B)=0.4 \: and \: P(A \cap B') = 0.5$ then $ P(B/A\: UB')=$

asked Jan 2, 2014 by thanvigandhi_1

1 answer

A fair die is tossed once. The probability that either an even number or 3 will appear

asked Jan 2, 2014 by thanvigandhi_1

1 answer

Light of Intensity $10^{-5}W/m^2$ falls on a sodium photo-cell of surface area $2\: cm^2$ .Assuming that the top 5 layers of sodium absorb the incident energy, estimate time required for photoelectric emission in the wave – picture of radiation.( Effective atomic area of a sodium atom = $10^{-20}m^2$ )

asked Dec 30, 2013 by thanvigandhi_1

1 answer

Among 5 numbers a, b, c, d and e the relationships are: a, b, c are in AP and b, c, d are in GP and c, d, e are in HP. Find b, c, d if a = 2 and e = 18.

asked Dec 30, 2013 by yamini.v

2 answers

Let $f(x)=\left\{\small\begin{array}{1 1} \large\frac{(x^3+x^2-16x+20)}{(x-2)^2}&if\;x\neq 2\\K&if\;x=2\end{array}\right.$. If $f(x)$ is continuous for all $x$ then $K$ =

asked Dec 20, 2013 by sreemathi.v

1 answer

The angle between the line $\overrightarrow r=(2\hat i-\hat j+3\hat k)+\lambda(3\hat i-\hat j+2\hat k)\:\:and\:\:the\:\:plane\:\:\overrightarrow r.(\hat i+\hat j+\hat k)=3$ is ?

asked Dec 18, 2013 by rvidyagovindarajan_1

1 answer

If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere will be :

asked Dec 14, 2013 by thanvigandhi_1

1 answer

Integrate: $\int \large\frac{2}{3} \frac{e^x \sqrt {e^x-4}}{e^x+g}$$dt$

asked Dec 12, 2013 by meena.p

1 answer

Calculate the solubility product of $AgBr$ in water at $25^{\large\circ}$ from the cell: $Ag,Ag^+Br^-$(Saturated solution). The standard potentials are $E^{\large\circ}_{AgBr,Ag}=0.07V$, $E^{\large\circ}_{Ag^+,Ag}=0.80V$. The $K_{SP}$ Value is

asked Dec 10, 2013 by sreemathi.v

1 answer

According to VSEPR theory, the number of lone pairs in $PCl_5, IF_5, SOF_4$, and $XeOF_4$

asked Dec 9, 2013 by sreemathi.v

1 answer

A simple tissue with mechanical and physiological functions in a young dicotyledonous plant is

asked Dec 6, 2013 by thanvigandhi_1

0 answers

Which of the following does not obey the octet rule?

asked Dec 6, 2013 by sreemathi.v

1 answer

The number of $\pi-$bonds in ethane, ethene and ethyne are respectively

asked Dec 6, 2013 by sreemathi.v

1 answer

Refer to the below reaction :

asked Dec 4, 2013 by sreemathi.v

1 answer

Arrange the following alkenes in the increasing order of their heats of hydrogenation: 1.2-methyl butene,2.cis -2pentene,3.3-methyl butene

asked Dec 2, 2013 by sreemathi.v

1 answer

During meiosis, the disjunction of chromosomes can be seen in this stage

asked Dec 1, 2013 by thanvigandhi_1

0 answers

Which acid is manufactured by Ostwald's process

asked Nov 26, 2013 by sreemathi.v

1 answer

Let $\mid x\mid$ represent the greatest integer less than or equal to $x$ then the value of the determinant $\begin{vmatrix}e & \pi & \pi^{2}-6 \\ \pi & \pi^{2}-6 & e \\ \pi^{2}-6 & e & \pi \end{vmatrix}$ is

asked Nov 25, 2013 by sreemathi.v

1 answer

The female gametophyte in angispernts is called

asked Nov 24, 2013 by thanvigandhi_1

0 answers

Balancing roots are seen in

asked Nov 22, 2013 by thanvigandhi_1

1 answer

Let $a,b,c$ be the real numbers. Then the following system of equations in $x,y$ and $z$: $\large\frac{x^2}{a^2}+\frac{y^2}{b^2}-\frac{z^2}{c^2}=1$, $\large\frac{x^2}{a^2}-\frac{y^2}{b^2}+\frac{z^2}{c^2}=1$, $\large\frac{-x^2}{a^2}+\frac{y^2}{b^2}+\frac{z^2}{c^2}=1$ has

asked Nov 21, 2013 by sreemathi.v

1 answer

At the boiling point of a liquid its ________ becomes equal to the atmospheric pressure.

asked Nov 13, 2013 by mosymeow_1

1 answer

At a given instant of time two particles are having the position vectors $4 \hat i+4 \hat j+57 \hat k$ metres and $2 \hat i+2 \hat j+5 \hat k$ respectively. If the velocity of the first particle be $0.4 \hat i ms^{-1},$ the velocity of second particle in meter per second if they collide after 10 sec is :

asked Nov 13, 2013 by meena.p

1 answer

The function $f: C \to C$ defined by $f(x) =\large\frac{ax+b}{cx+d}$ for $ x \in C$ where $bd \neq 0$ reduces to a constant function , if :

asked Nov 11, 2013 by meena.p

1 answer

The following plants are devoid of some vital organs. Arrange these in the order of absence of roots , stem, leaf, flower and fruits respectively :

asked Nov 10, 2013 by thanvigandhi_1

1 answer

A complex compound of $Co^{3+}$ with molecular formula $CoCl_x.yNH_3$ gives a total of 3 ions when dissolved in water. How many $Cl^{-}$ ions satisfy both primary and secondary valencies in this complex ?

asked Nov 8, 2013 by meena.p

0 answers

At a given instant of time the position vector of a particle moving in a circle with a velocity $3 \hat i- 4 \hat j + 5 \hat k$ is $\hat i+9 \hat j -3 \hat k$. Its angular velocity at that time is :

asked Nov 7, 2013 by meena.p

1 answer

A sample of Mg was burnt in air to give a mixture of MgO and $Mg_3N_2$.The ash was dissolved in 60meq. of HCl and the resulting solution was back titrated with NaOH.12meq of NaOH were required to reach the end point.An excess of NaOH was added and the solution distilled.The ammonia released was then trapped in 10Meq of second acid solution .Back titration of this solution required 6Meq of the base.Calculate the percentage of Mg burnt to the nitride.

asked Nov 6, 2013 by sreemathi.v

1 answer

If $f: R \to R $ is defined by $f(x)=[2x]-2[x]$ for $x \in R,$ where $[x]$ is the greatest integer not exceeding x, then the range of f is :

asked Nov 5, 2013 by meena.p

1 answer

what is the correct order of spin only magnetic moment (in BM) of $Mn^{2+},Cr^{2+}$ and $ V^{2+}?$

asked Oct 29, 2013 by meena.p

1 answer

If $\overrightarrow a$ is a non zero vector with magnitude $a$ and $\lambda a$ is a non zero scalar then $\lambda\overrightarrow a$ is a unit vector if $\lambda=?$

asked Oct 28, 2013 by rvidyagovindarajan_1

1 answer

A man standing on a road has to hold his umbrella at $30^{\circ}$ with the vertical to keep the rain away. He throws the umbrella and starts running at 10 km/h. He finds that raindrops are hitting his head vertically. The actual speed of raindrops is :

asked Oct 28, 2013 by meena.p

1 answer

Which of the following pair is correct?

asked Oct 25, 2013 by thanvigandhi_1

1 answer

If $f: R \to R$ and defined by $f(x)=\large\frac{1}{2-\cos 3x}$ for each $ x \in R$, then the range of f is

asked Oct 24, 2013 by meena.p

1 answer

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