Recent questions tagged q9

The correct representation of $\lambda^{\large\circ}CH_3COOH$ interms of $\lambda^{\large\circ}_{CH_3COOK},\lambda^{\large\circ}_KCl$ is

asked Dec 10, 2013 by sreemathi.v

1 answer

In spirogyra, a brief period of tetranucleate condition is found in :

asked Dec 6, 2013 by thanvigandhi_1

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Which of the following species has bond order different from that in CO?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following molecule exhibits the largest bond angle?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following statement is correct regarding the molecule A

asked Dec 4, 2013 by sreemathi.v

1 answer

Protonation of 1,2-butadine gives carbocation(A) and protonation of 2-butene gives carbocation(B). In both case the most stable crbocation possible is produced but no carbocation rearrangements take place. Which of the two carbocation is more stable and why?

asked Dec 3, 2013 by sreemathi.v

1 answer

The diploid phase in the life cycle of spirogyra is represented by :

asked Dec 1, 2013 by thanvigandhi_1

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Name the metalloid present in V A Group

asked Nov 26, 2013 by sreemathi.v

1 answer

If $x,y,z$ are all distinct and $\begin{vmatrix}x&x^2&1+x^3\\y&y^2&1+y^3\\z&z^2&1+z^3\end{vmatrix}=0$ then the value of $xyz$ is

asked Nov 25, 2013 by sreemathi.v

1 answer

Which of the following viruses have spherical shape ?

asked Nov 24, 2013 by thanvigandhi_1

0 answers

Modification of bract in Typhonium is a

asked Nov 22, 2013 by thanvigandhi_1

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If $\begin{bmatrix}2&1\\3&2\end{bmatrix}A\begin{bmatrix}-3&2\\5&-3\end{bmatrix}=\begin{bmatrix}1&0\\0&1\end{bmatrix}$ then the matrix A is equal to

asked Nov 22, 2013 by sreemathi.v

1 answer

The equilibrium constant for the reaction $ A + 2B \rightleftharpoons 2C $ is 40. The Equilibrium constant for the reaction $ C \rightleftharpoons B + 1/2 A$ is

asked Nov 13, 2013 by mosymeow_1

1 answer

A particle of mass 1 kg is projected with an initial velocity $10\;ms^{-1}$ at an angle of projection $45^{\circ}$ with the horizontal. The average torque acting on the projectile, between the time at which it is projected and the time at which it strikes the ground, about the point of projection in newton-meter is :

asked Nov 13, 2013 by meena.p

1 answer

The coefficient of $x^3y^4z^5$ in the expansion of $(xy+yz+xz)^6$ is :

asked Nov 11, 2013 by meena.p

1 answer

The ratio of the cohorts of the first two subclasses of Dicotyledonae in Bentham and Hooker classification is :

asked Nov 10, 2013 by thanvigandhi_1

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In which of the following reactions the product is an ether ?

asked Nov 8, 2013 by meena.p

1 answer

The instantaneous velocity of a point B of the given rod of length 0.5 m is 3 m/s in the represented direction. The angular velocity of the rod for the minimum velocity of end A is

asked Nov 7, 2013 by meena.p

1 answer

$0.05\;g$ of a commercial sample $KCl_3$ on decomposition liberated just sufficient oxygen for complete oxidation of $20\;ml\; CO$ at $27^{\large\circ}C$ and $750\;mm$ pressure.Calculate % of $KClO_3$ in sample.

asked Nov 6, 2013 by sreemathi.v

1 answer

$1+\large\frac{2}{4}+\frac{2.5}{4.8}+ \frac{2.5.8}{4.8.12}+\frac{2.5.8.11}{4.8.12.16}+.........$ is equal to :

asked Nov 5, 2013 by meena.p

1 answer

The sides of a parallelogram are given by vectors $2\hat i+4\hat j-5\hat k$ and $\hat i+2\hat j+3\hat k$. Unit vector along one of the diagonals is given by ?

asked Oct 30, 2013 by rvidyagovindarajan_1

1 answer

Which of the following statements is not correct ?

asked Oct 30, 2013 by meena.p

1 answer

A uniform rod of length 8a and mass 6m lies on a smooth horizontal surface. Two points masses m and 2m moving in the same plane with speed 2v and v respectively strikes the rod perpendicularly at distances a and 2a from the mid point of the rod in the opposite directions and stick to the rod. The angular velocity of the system immediately after the collision is :

asked Oct 28, 2013 by meena.p

1 answer

The number of ATP required in excess to assimilate atmosphere $CO_2$ to four molecules of triose phosphates in $C_4$ plants as compared to $C_3$ plants is

asked Oct 25, 2013 by thanvigandhi_1

1 answer

If $a_k$ is the coefficient of $x^k$ in the expansion of $(1+x+x^2)^n$ for $k=0,1,2.......,2n$ then $a_1+2a_2+3a_3+.....+2na_{2n}$ is equal to

asked Oct 24, 2013 by meena.p

1 answer

Assertion (A): Equal moles of different substance contain same number of constituent particles. Reason (R): Equal weights of different substances contain same number of constituent particles.

asked Oct 23, 2013 by meena.p

1 answer

A bucket filled with water is tied to a rope of length 0.5 m and is rotated in a circular path in vertical plane. The least velocity it should have at the lowest point of circle so that water does not spill is. $(g=10ms^{-2})$

asked Oct 22, 2013 by meena.p

1 answer

Which of the following two oxide of nitrogen have 30.5% nitrogen

asked Oct 22, 2013 by sreemathi.v

1 answer

If $\alpha,\beta,\gamma\in (0,\large\frac{\pi}{2})$ then $\sin\alpha+\sin\beta+\sin\gamma$ is

asked Oct 18, 2013 by sreemathi.v

1 answer

If $(1+x+x^2+x^3)^5= \sum \limits_{k=0} ^{15} a_k x^k$ then $ \sum \limits_{k=0}^7 a_{2k}=$

asked Oct 16, 2013 by meena.p

1 answer

Study the following lists

asked Oct 15, 2013 by thanvigandhi_1

1 answer

If $\tan A-\tan B=x$ and $\cot B-\cot A=y$ then $\cot(A-B)$ is equal to

asked Oct 14, 2013 by sreemathi.v

1 answer

For $|x| < 1$, the constant term in the expansion of $\large\frac{1}{(x+1)^2(x-2)}$ is :

asked Oct 9, 2013 by meena.p

1 answer

The maximum and minimum values of $7\cos\theta+24\sin\theta$ are equal to

asked Oct 7, 2013 by sreemathi.v

1 answer

Four identical hollow cylindrical column of steel support a big structure of mass $50000\;kg$. The inner and outer radii of each column are 30 and 60 cm respectively. Assuming load distribution to be uniform , the compressional strain of each column is $ [y_{steel}=2.0 \times 10^{11} Nm^{-2}]$

asked Oct 3, 2013 by meena.p

1 answer

Assume that blue flower of a plant is dominant character over white. When a blue flowered plant is crossed with white flowered plant, the progeny showed 50% of plants with blue flowers and 50% of plants with white flowers. The genotypes of blue and white parents respectively are

asked Oct 2, 2013 by thanvigandhi_1

1 answer

$ \large \frac{3x^2+x+1}{(x-1)^4}=\frac{a}{(x+1)}+\frac{b}{(x-1)^2}+\frac{c}{(x-1)^3}+\frac{d}{(x-1)^4} $$ => \begin{bmatrix} a & b \\ c & d \end{bmatrix} $=

asked Sep 26, 2013 by meena.p

1 answer

The length of the sub tangent at any point $(x_1,y_1)$ on the curve$y=5^x$

asked Sep 20, 2013 by meena.p

1 answer

If $\large\frac{1}{x^4+x^2+1}=\frac{Ax+B}{x^2+x+1}+\frac{Cx+D}{x^2-x+1}$, then $C+D=$

asked Sep 13, 2013 by meena.p

1 answer

$\sum \limits_{n=0}^{\infty} (-1)^n x^{n+1}$=............

asked Sep 13, 2013 by meena.p

0 answers

The length of the latus rectum of an ellipse is $\large\frac{1}{3}$ of the major axis. It's $e$ is :

asked Sep 13, 2013 by meena.p

1 answer

The rms velocity of an ideal gas at $27^{\circ}C$ is $0.3\;m/s$. Its rms velocity at $927^{\circ}C$(in m/s.) is :

asked Sep 11, 2013 by meena.p

1 answer

A ball of 1 g released down an inclined plane describes a circle of radius 10 cm in the vertical plane on reaching the bottom. The minimum height of the inclined plane is ................ cm.

asked Sep 11, 2013 by meena.p

1 answer

Earth is flattened at poles and bulging at the equator. This is due to:

asked Sep 10, 2013 by meena.p

1 answer

Refer to the below equation :

asked Sep 5, 2013 by sreemathi.v

1 answer

Refer to the image below :

asked Aug 23, 2013 by sreemathi.v

1 answer

Refer to the below image :

asked Aug 22, 2013 by sreemathi.v

1 answer

The feasible region for a LPP is shown in fig 12.10.Evaluate $Z=4x+y$ at each of the corner points of this region.Find the minimum value of $Z$,if it exists.

asked Aug 20, 2013 by sreemathi.v

1 answer

A planet moves around the sun. At a given point P,it is closet from the sun at a distance $d_1$ and speed $v_1$ At another point Q when it is farthest from the sun at a distance $d_2$, its speed will be

asked Aug 9, 2013 by meena.p

1 answer

There will be an increase in potential energy of the system if work is done upon the system by

asked Jul 17, 2013 by meena.p

1 answer

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