Recent questions tagged q7

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{1}{ax^2+bx+c}$

asked Apr 12, 2014 by thanvigandhi_1

1 answer

Find the middle terms in the expansions of $\;\large ($$ 3 $$- \large\frac{x^3}{6})^7$

asked Apr 10, 2014 by balaji.thirumalai

1 answer

Using Binomial Theorem, evaluate $102^6$

asked Apr 10, 2014 by balaji.thirumalai

1 answer

A man running a racecourse notes that the sum of the distances from the two flag posts from him is always 10 m and the distance between the flag posts is 8 m. Find the equation of the posts traced by the man.

asked Apr 8, 2014 by balaji.thirumalai

1 answer

Find the equations of the hyperbola satisfying the given conditions: Vertices: $(\pm 2, 0)$, Foci: $(\pm 3, 0)$

asked Apr 8, 2014 by balaji.thirumalai

1 answer

A parallel plate capacitor is made of two circular plates separated by a distance of $5mm$ and with a dielectric of dielectric constant $2.2$ between them. When the electric field in the dielectric is $ 3 \times 10^4 \;V/m$, the change density of the positive plate will be close to

asked Apr 7, 2014 by meena.p

1 answer

Evaluate the following limits $ \lim\limits_{x \to 2} \large\frac{3x^2-x-10}{x^2-4}$

asked Apr 3, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the foci, the vertices, the length of the major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse $36x^2+4y^2 = 144$

asked Apr 2, 2014 by balaji.thirumalai

1 answer

Find the equation of the parabola that satisfies the given conditions: Focus $(6,0)$ and Directrix $x=-6$

asked Apr 1, 2014 by balaji.thirumalai

1 answer

Find the centre and radius of the circle $x^2+y^2-4x-9y-45=0$

asked Apr 1, 2014 by balaji.thirumalai

1 answer

If $f$ is a function satisfying $f(x+y)=f(x).f(y)\:\:\forall x,y\in N$ such that $f(1)=3\:\:and\:\:\displaystyle\sum ^{n}_{x=1} f(x)=120$, then find the value of $n$.

asked Mar 29, 2014 by rvidyagovindarajan_1

1 answer

When hemiacetal reacts with alcohol the product is

asked Mar 27, 2014 by thanvigandhi_1

1 answer

If $ R = \{ (x, y) : x + 2y =8\}$ is a relation on N. write the range of R

asked Mar 25, 2014 by thanvigandhi_1

1 answer

Find the sum to $n$ terms of the series $1^2+(1^2+2^2)+(1^2+2^2+3^2)+........$

asked Mar 24, 2014 by rvidyagovindarajan_1

1 answer

Which of the following does not react with Hinsberg reagent?

asked Mar 21, 2014 by thanvigandhi_1

1 answer

Find the projection of the vector $ \hat i + \hat j + \hat k$ on the vector $\hat j$.

asked Mar 20, 2014 by rvidyagovindarajan_1

1 answer

Silver is refined by

asked Mar 17, 2014 by meena.p

1 answer

Calculate the standard free energy change, $ \Delta G^o$ for the reaction \[\] $H_2(g) + I_2(g) \rightarrow 2HI(g)$ \[\] Given that the standard enthalpy change and the standard entropy change for the reaction are $52 \: kJ\: and\: 165.2 \: J/K$ respectively.

asked Mar 13, 2014 by thanvigandhi_1

1 answer

The structure of $XeO_2F_2$ based on VSEPR theory is best described as

asked Mar 7, 2014 by sreemathi.v

1 answer

Nylon -66 is a polyamide of a

asked Mar 6, 2014 by thanvigandhi_1

1 answer

Among O-nitro aniline(I),P-nitro aniline (II),M-nitro aniline (III) the order of increasing basic strength is

asked Feb 27, 2014 by sreemathi.v

1 answer

Find the sum of $20$ terms of the G.P., $0.15,0.015,0.0015................$

asked Feb 25, 2014 by rvidyagovindarajan_1

1 answer

Laser beams are used to measure long distances because:

asked Feb 25, 2014 by thanvigandhi_1

1 answer

Find the sum of $n$ terms of an $A.P.$ whose $k^{th}$ term is $5k+1$

asked Feb 22, 2014 by rvidyagovindarajan_1

1 answer

Which of the following has the most acidic hydrogen

asked Feb 20, 2014 by meena.p

1 answer

Which of the following compounds does not under go aldol condensation?

asked Feb 19, 2014 by sreemathi.v

1 answer

Find $a_{17},\:a_{24}$ if $a_n=4n-3$

asked Feb 17, 2014 by rvidyagovindarajan_1

1 answer

Kinetic theory of gases proves

asked Feb 12, 2014 by sharmaaparna1

1 answer

Find the equations of the bisectors of the angle between the co-ordinate axes?

asked Feb 4, 2014 by sreemathi.v

1 answer

General solution of $(2x^3-xy^2)dx+(2y^3-x^2y)dy=0$ is

asked Feb 3, 2014 by meena.p

1 answer

The hybridisation of iron in $K_4[Fe(CN)_6]$

asked Jan 31, 2014 by sreemathi.v

1 answer

The alkali metal widely used in photoelectric cells is

asked Jan 27, 2014 by sreemathi.v

1 answer

Electronic conduction to in a semiconductor takes place due to

asked Jan 27, 2014 by meena.p

1 answer

S1:$ ^{\sim} (p \leftrightarrow\: ^{\sim} q)$ is equivalent to $p \leftrightarrow q.$ \[\] S2 :$ ^{\sim} (p\leftrightarrow \: ^{\sim} q)$ is a tautology.

asked Jan 22, 2014 by thanvigandhi_1

1 answer

Neutron is not present in the nucleus of

asked Jan 22, 2014 by sreemathi.v

1 answer

Identify the correct statement

asked Jan 20, 2014 by sreemathi.v

1 answer

Which statement is logically equivalent to "If Yoda cannot use a lightsaber, then he cannot help Luke win the battle."

asked Jan 18, 2014 by thanvigandhi_1

1 answer

Which of the following is the converse of the statement: $"If x>4$, then $x+2>5"$?

asked Jan 17, 2014 by thanvigandhi_1

1 answer

A spectral line in the spectrum of $H$-atom has a wave number of $15222.22cm^{-1}$. What transition is responsible for this radiation? (Rydberg constant $R=1.096\times 10^5cm^{-1}$)

asked Jan 9, 2014 by sreemathi.v

1 answer

A fair die is tossed until a number greater than 4 appears. The probability that an even number of tosses shall be required is

asked Jan 8, 2014 by thanvigandhi_1

1 answer

The probability that England wins a cricket match against India is $ \large\frac{1}{3}$. If India and England play 3 test matches the probability that India will win exactly 2 test matches is

asked Jan 4, 2014 by thanvigandhi_1

1 answer

A bag contains tickets numbered 1 to 20. Two tickets are drawn from the bag. The probability that both the numbers appearing on the tickets drawn will be prime is :

asked Jan 2, 2014 by thanvigandhi_1

1 answer

In an AP, the sum of n terms is a function of n, $S_{n}=3n^2+2n.$ Find the rth term.

asked Dec 30, 2013 by yamini.v

1 answer

The intercepts cut off by the plane $\overrightarrow r.(2\hat i+\hat j-\hat k)=5$ with the axes are ?

asked Dec 24, 2013 by rvidyagovindarajan_1

1 answer

$\lim\limits_{x\to \infty}\big(\large\frac{x+6}{x+1}\big)^{x+4}$=

asked Dec 20, 2013 by sreemathi.v

1 answer

Sand is being dropped on a conveyor belt at the rate of M / kg s. The force necessary to keep the belt moving with a constant velocity of $ v\: m/s$ will be :

asked Dec 14, 2013 by thanvigandhi_1

0 answers

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