Recent questions tagged jeemain

Match conservation laws in List-I with the processes in List-II :

asked Nov 15, 2013 by thanvigandhi_1

1 answer

An electron moving at a speed of $ 5 \times 10^6\: ms^{-1}$ is shot through a sheet of paper which is $ 2.1 \times 10^{-4}\: cm$ thick. The electron emerges from the paper with speed of $ 2 \times 10^6\: ms^{-1}$ . The time taken by the electron in seconds to pass through the paper sheet is :

asked Nov 15, 2013 by thanvigandhi_1

1 answer

A man moves 20 m North, then 10 m east and then $ 10\sqrt2$m south-west, his displacement is :

asked Nov 15, 2013 by thanvigandhi_1

0 answers

A body weight 22.42 gm and has a measured volume of 4.7 cc. The possible error in the measurement of mass and volume are 0.01 gm and 0.1 cc. Then the maximum error percentage in the density will be :

asked Nov 15, 2013 by thanvigandhi_1

1 answer

If $\beta_1, \beta_2$ and $\beta_3$ are stepwise formation constants of $MCl, MCl_2, MCl_3$ and K is the overall formation constants of $MCl_3$, then (charges ommitted) :

asked Nov 15, 2013 by mosymeow_1

1 answer

Match the following

asked Nov 15, 2013 by thanvigandhi_1

0 answers

The number of solutions of the pair of equations $2\sin^2\theta-\cos 2\theta=0$ and $\cos^2\theta-3\sin\theta=0$ in the interval $[0,2\pi]$ is

asked Nov 15, 2013 by sreemathi.v

1 answer

For the following gaseous equilibria X, Y and Z at 300 K. $X: 2SO_2 + O_2 \rightleftharpoons 2SO_3$ $Y: PCl_5 \rightleftharpoons PCl_3 + Cl_2$ $Z: 2HI \rightleftharpoons H_2 + I_2$ ratio of $K_p$ and $K_c$ in the increasing order is:

asked Nov 15, 2013 by mosymeow_1

1 answer

The application of polymerase Chain Reaction is :

asked Nov 15, 2013 by thanvigandhi_1

0 answers

Haemopoietic stem cells are :

asked Nov 15, 2013 by thanvigandhi_1

0 answers

Find the frequency of heterozygotes in a population which exhibits the Hardy-Weingberg equilibrium, if the frequencies of the two alleles in the population are 0.6 and 0.4 :

asked Nov 15, 2013 by thanvigandhi_1

0 answers

The equilibrium constant $K_c$ for the reaction of $H_2$ with $I_2$ is 57.0 at 700 K $ H_2(g) + I_2(g) \rightleftharpoons 2HI $; $K_c$ = 57 at 700K. select correct statement:

asked Nov 15, 2013 by mosymeow_1

1 answer

Statement (S) : The concept of survival of the fittest is central to natural selection. Reasons (R) : Individuals who possess advantageous characters to adapt to the environment have better potential for survival.

asked Nov 15, 2013 by thanvigandhi_1

0 answers

If $x\sin^3\theta+y\cos^3\theta=\sin\theta\cos\theta$ and $x\sin\theta=y\cos\theta$ then $x^2+y^2$ is

asked Nov 15, 2013 by sreemathi.v

1 answer

Match the following in Drosophila with reference to *** determination :

asked Nov 15, 2013 by thanvigandhi_1

0 answers

The solution of the equation $[\sin x+\cos x]^{1+\sin 2x}=2,-\pi\leq x\leq \pi$ is

asked Nov 15, 2013 by sreemathi.v

1 answer

If $\sec\theta=m$ and $\tan\theta=n$ then $\large\frac{1}{m}$$\big[(m+n)+\large\frac{1}{(m+n)}\big]$

asked Nov 15, 2013 by sreemathi.v

1 answer

In a $\Delta ABC$ if $b=2,B=30^{\large\circ}$ then the area of the circumcircle of $\Delta$ ABC in square unit is

asked Nov 15, 2013 by sreemathi.v

1 answer

In a $\Delta$ABC if the sides are $a=3,b=5,c=4$ then $\sin\large\frac{B}{2}$$+\cos{\large\frac{B}{2}}$ is equal to

asked Nov 15, 2013 by sreemathi.v

1 answer

The sides of a $\Delta$le are respectively 7cm,$4\sqrt 3$cm and $\sqrt{13}$cm then the smallest angle of the triangle is

asked Nov 15, 2013 by sreemathi.v

1 answer

What is the Equilibrium constant for the formation of one mole of gaseous $HI$ from the $H_2(g)$ and $I_2(g)$?

asked Nov 15, 2013 by mosymeow_1

1 answer

Solve for $x$: $\tan^{-1}x+2\cot^{-1}x=\large\frac{2\pi}{3}$.

asked Nov 15, 2013 by sreemathi.v

1 answer

If $-\large\frac{x}{2}$$<\sin^{-1}x<\large\frac{x}{2}$ then $\tan(\sin^{-1}x)$ is equal to

asked Nov 15, 2013 by sreemathi.v

1 answer

If $\tan^{-1}\big(\large\frac{a}{x}\big)$$+\tan^{-1}\big(\large\frac{b}{x}\big)=\frac{\pi}{2}$ then $x$ is equal to

asked Nov 15, 2013 by sreemathi.v

1 answer

What are the units of Equilibrium equations $K_p$ and $K_c$ when $\Delta n_g < 0$ respectively ?

asked Nov 15, 2013 by mosymeow_1

1 answer

what would be the expression in place of ? in the Van't Hoff equation: $ log \frac{K_2}{K_1} = \frac {\Delta H^\circ}{2.303R} [?]$

asked Nov 15, 2013 by mosymeow_1

1 answer

If $\tan^{-1}\large\frac{1}{a-1}$$=\tan^{-1}x+\tan^{-1}(x+1)=\tan^{-1}3x$ is

asked Nov 15, 2013 by sreemathi.v

1 answer

Which of the following is incorrect about relationship between $K_p$ and $K_c$?

asked Nov 15, 2013 by mosymeow_1

1 answer

If in any $\Delta ABC$ $A=30^{\large \circ}$ and $B=60^{\large\circ}$ then find $a: b:c$

asked Nov 15, 2013 by sreemathi.v

1 answer