Recent questions tagged q7

Integrate :$\int \limits_0^1 \large\frac{1}{\sqrt {x-(z-x)}} $$dx$

asked Dec 12, 2013 by meena.p

1 answer

What is the cell constant of a cell of an electrode having dimensions 4cm & 3cm and the two electrodes are separated by 2cm?

asked Dec 10, 2013 by sreemathi.v

1 answer

Development of haploid plants from totipotent pollen is called

asked Dec 6, 2013 by thanvigandhi_1

1 answer

Which of the following represent the correct order of increase in covalent character?

asked Dec 6, 2013 by sreemathi.v

1 answer

The number of electrons in the $\sigma$ 2p molecular orbital in $N_2^+$ is

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following alkanes will give single product with a methele insertion?

asked Dec 4, 2013 by sreemathi.v

1 answer

Consider the following reaction

asked Dec 2, 2013 by sreemathi.v

1 answer

The substance used in the tissue culture media for induction of shoots in callus is

asked Dec 1, 2013 by thanvigandhi_1

0 answers

Stability order of VA group hydrides is

asked Nov 26, 2013 by sreemathi.v

1 answer

If $A,B,C$ are angles of a triangle then $\begin{vmatrix}e^{2iA}&e^{-iC}&e^{-iB}\\e^{-iC}&e^{2iB}&e^{-iA}\\e^{-iB}&e^{-iA}&e^{2iC}\end{vmatrix}$ is equal to

asked Nov 25, 2013 by sreemathi.v

1 answer

The number of neck canal cells in the archegonium of selaginella is :

asked Nov 24, 2013 by thanvigandhi_1

0 answers

In Fabaceae, the floral structures which enclose the essential organs are

asked Nov 22, 2013 by thanvigandhi_1

1 answer

If $a^2+b^2+c^2=-2$ and $f(x)=\small\begin{vmatrix}1+a^2x&(1+b^2)x&(1+c^2)x\\(1+a^2)x&1+b^2x&(1+c^2)x\\(1+a^2)x&(1+b^2)x&1+c^2x\end{vmatrix}$ then $f(x)$ is a polynomial of degree

asked Nov 22, 2013 by sreemathi.v

1 answer

Specify the unit of Equlibrium Constant of the following reaction. $ Fe^{3+} (aq) + SCN^- (aq) \rightleftharpoons Fe(SCN)^{2+} (aq) $

asked Nov 13, 2013 by mosymeow_1

1 answer

Consider the following statements A and B and identify the correct answer:A : When a person walks on a rough surface the direction of frictional force exerted by the surface on the person is opposite to the direction of his motion. B : When a cycle is in motion, the force of friction exerted by the ground on the front wheel is in the backward direction:

asked Nov 13, 2013 by meena.p

1 answer

A three digit number n is such that the last two digits of it are equal and differ from the first. Then number of such n's is :

asked Nov 11, 2013 by meena.p

1 answer

Assertion (A) : In Fritillaria, the embryo sac is described as tetrasporic type. Reasons (R) : In Fritillaria, four megaspore mother cells are involved in the formation of an embryo sac.

asked Nov 10, 2013 by thanvigandhi_1

1 answer

Which one of the following reactions does not form gaseous product ?

asked Nov 8, 2013 by meena.p

0 answers

Consider the following statements A and B and identify the correct answer: (A): In an elastic collision , if a body suffers a head on collision with another of same mass at rest, the first body comes to rest while the other starts moving with the velocity of the first one . (B): Two bodies of equal mass suffering a head on elastic collision merely exchanges their velcities :

asked Nov 7, 2013 by meena.p

1 answer

0.22g sample of volatile compound,containing $C,H$ and $Cl$ only on combustion in $O_2$ gave 0.195g $CO_2$ and 0.0804g $H_2O$.If 0.120g of the compound occupied a volume of 37.24ml at $105^{\large\circ}$ and 768mm of pressure,calculate molecular formula of compound.

asked Nov 6, 2013 by sreemathi.v

1 answer

Eight different letters of an alphabets are given. Words of four letters from these are formed. The number of such words with at least one letter repeated is :

asked Nov 5, 2013 by meena.p

1 answer

Observe the following statements:

asked Oct 29, 2013 by meena.p

1 answer

$[\overrightarrow a\:\:\overrightarrow b\:\:\overrightarrow a\times\overrightarrow b]$=?

asked Oct 29, 2013 by rvidyagovindarajan_1

1 answer

For a system to follow the law of conservation of linear momentum during a collision the condition is :

asked Oct 28, 2013 by meena.p

1 answer

A student has taken 6000 molecules of Fructose 1, 6-bisphosphate and 2 molecules of Aldolase into an enzyme reaction mixture to determine its activity. After 5 minutes, 50% substrate was found converted into products. Then, what is the TON of Aldolase and the total number of trioses formed by the enzyme action at the end of 5 minutes?

asked Oct 25, 2013 by thanvigandhi_1

1 answer

The number of ways of arranging 8 men and 4 women around a circular table such that no two women can sit together is

asked Oct 24, 2013 by meena.p

1 answer

A radioactive substance $_{88} X ^{228}(IIIA)$ emits $3 \alpha$ and $3\; \beta$ particles to form "Y". To which group of long form of the periodic table does "Y" belong ?

asked Oct 23, 2013 by meena.p

1 answer

How many molecules of atoms of oxygen are present in 5.6 litres of oxygen $(O_2)$ at NTP?

asked Oct 23, 2013 by sreemathi.v

1 answer

In two separate collisions, the coefficient of restitutions $e_1$ and $e_2$ are in the ratio $3:1$ . In the first collision the relative velocity of approach is twice the relative velocity of separation, then the ratio between relative velocity of approach and the relative velocity of separation in the second collision is

asked Oct 22, 2013 by meena.p

1 answer

Which pair of species has same percentage of carbon?

asked Oct 22, 2013 by sreemathi.v

1 answer

If $x=\sin^{14}\theta+\cos ^{20}\theta$,then for all $\theta\in R$

asked Oct 18, 2013 by sreemathi.v

1 answer

9 balls are to be placed in 9 boxes; and 5 of the balls cannot fill into 3 small boxes. The number of ways of arranging one ball in each of the boxes is

asked Oct 16, 2013 by meena.p

0 answers

Study the following lists

asked Oct 15, 2013 by thanvigandhi_1

1 answer

The value of $\sqrt{\large\frac{1-\sin\theta}{1+\sin\theta}}$ is equal to

asked Oct 14, 2013 by sreemathi.v

1 answer

The coefficient of $x^{24}$ in the expansion of $(1+x^2)^{12}(1+x^{12}) (1+x^{24})$ is :

asked Oct 8, 2013 by meena.p

1 answer

If $\tan^2\theta=2\tan^2\phi+1$ then $\cos 2\theta+\sin^2\phi$ is equal to

asked Oct 4, 2013 by sreemathi.v

1 answer

The stress versus strain graph for wires of two material A and B are as shown. If $Y_A$ and $Y_B$ are the Young's modulus of materials then

asked Oct 3, 2013 by meena.p

1 answer

Study the following lists

asked Oct 2, 2013 by thanvigandhi_1

1 answer

$(1+2x+3x^2)^{10}=a_0+a_1x+a_2x^2+..........+a_{20}x^{20}=>\large\frac{a_2}{a_1}$=

asked Sep 26, 2013 by meena.p

1 answer

If $1^{\circ}=\alpha$ radians then the approximate value of $\cos(60^{\circ}1')$ is

asked Sep 20, 2013 by meena.p

0 answers

The term independent of $x\;(x>0,x \neq 1)$ in the expansion of $\bigg[\large\frac{(x+1)}{ x^{2/3}-x^{1/3}+1)}-\frac{(x-1)}{(x -\sqrt x)}\bigg]^{10}$ is

asked Sep 13, 2013 by meena.p

1 answer

$2 \begin {bmatrix} 1 & 1 & 1 \\ a & b & c \\ a^2-bc & b^2-ca & c^2-ab \end {bmatrix}$= ................. .

asked Sep 13, 2013 by meena.p

0 answers

The unit vector perpendicular to each of $2 \hat {i}-\hat {j}+\hat {k}$ and $ 3 \hat {i}+4 \hat j-\hat k$ is :

asked Sep 12, 2013 by meena.p

1 answer

A gaseous mixture contains $56\;g$ of $N_2,44\;g $ of $\; CO_2$ and $16\; g$ of $CH_4$. The total pressure of the mixture is $720 \;mm$ Hg. The partial pressure of $CH_4$ is :

asked Sep 11, 2013 by meena.p

1 answer

Ice contracts on melting when subjected to pressure and the pressure is increased the melting point .................... .

asked Sep 11, 2013 by meena.p

0 answers

Keeping the banking angle same, to increase the maximum speed with which a vehicle can travel on a curved road by 10 percent the radius of curvature of the road has to be changed from 20 m to :

asked Sep 10, 2013 by meena.p

1 answer

Look at the following reaction and select the correct statement

asked Sep 5, 2013 by sreemathi.v

1 answer

n-Propyl chloride would give SN2 reactions underwhich of the following conditions?

asked Aug 23, 2013 by sreemathi.v

1 answer

In which of the following pair one species is incorrectly indicated which would give higher Substitution /Elimination ratio when it reacts with isopropyl bromide.

asked Aug 22, 2013 by sreemathi.v

1 answer

The feasible region for a LPP is shown in fig.12.9.Find the minimum value of $z=11x+7y$

asked Aug 20, 2013 by sreemathi.v

1 answer

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