Recently Active Past Iit Jee Question Questions

The oxidation number of Mn in the product of alkaline oxidative fusion of MnO2 is ...

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The nitrogen oxides that contain N-N bond are N2o N2O3 N2O4 N2O5 ...

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The speedo fthe particle that can take discrete values is proportional to A) n-3/2 B) n-1 C) n1/2 D) n ...

Result of calculation for four different designs of a fusion reactor using D. D reaction are givn below. Which o fthese is most promising based on Lawson Criterion A) deuteron Density = 2.0 x 1012 cm-3, confinement time = 5.0 ...

Assume that two deuteron nuclei in the core of fusion reactor at temperature T are moving towards each other, each with kinetic energy 1.5kT, when the separation between them is large enough to neglect coulomb potential energ ...

for the circuit shown in the figure A) the current I through the battery is 7.5 mA B) The potential difference across Rl is 18 V c) Ratio of powers dissipated in R1 and R2 is 3 D) if R1 and R2 are interchanged, magnitude of t ...

A student performed the experiment of determination of focal length of a concave mirror by u-v method using an optical bench of lingth 1.5 meters. the focal length of the mirror is used is 24 cm. The maximum error in the loca ...

The figure shows certian wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular magnetic filed in the direction going into the plane of the figure. The magnitude of the field increases wi ...

A block of base 10cm x 10 cm and height 15 cm is kept on a inclined plane. The coefficient of friction between them is √3. The inclination θ of this inclined plane from the horizontal plane is gradually increased from 0°. ...

Look at the drawin ggiven in the figure which has been drawn with ink of uniform line-thickness. The mass of ink used to draw each of the two inner circles and each of the two line segments is m. The mass of the ink used to d ...

The x-t graph of a particle undergoes shm as shown below. The acceleration of the particle at t=4/3 is A) √3/32π2 B) -π2/32 C) π2/32 C) -√3/32π2 ...

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The conditional probability that X>=6 given X>3 equals A) 125/216 B) 25/216 C) 5/36 D) 25/36 ...

Number of matrices A in A for which the system of linear equations A\begin{bmatrix}x\\ y\\ z\end{bmatrix}=\begin{bmatrix}1\\ 0\\ 0\end{bmatrix} is inconsistent is A) 0 B) more than 2 C) 2 D) 1 ...

The number of matrices A in A for which the system of linear equations A\begin{bmatrix}x\\ y\\ z\end{bmatrix}=\begin{bmatrix}1\\ 0\\ 0\end{bmatrix} has a unique solution is A) Less than 4 B) atleast 4 but less than 7 C) at le ...

Paragraph for questions 33 to 35. lLet A be the set of all 3x3 symmetric matrices all of whose entries are ieter 0 or 1. Five of these entries are 1 and four of them are 0. The number of matrices A is A) 12, B)6 C)9 D)3 ...

In a triangle ABC with fixed base BC, the vertex A moves such that cos B + cos C = 4 sin2(A/2) If a,b,c denote the lengths of the sides of the triangle opposite to the angles A,B and C respectively, then A) b+c=4a B) b+c=2a C ...

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