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- Units and Dimensions 0
- Alternating currents 53
- Capacitance 49
- Center of mass and Momentum 57
- Communication system 16
- Current Electricity 51
- Electromagnatic induction 47
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- Electrostatics 62
- Fluid Mechanics 49
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- Law of Motion 52
- Magnetism of Moving Charges 42
- Modern physics 45
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- Motion in straight line 34
- Nuclear physics and radioactivity 40
- Ray Optics 43
- Rotational machanics 46
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- Simple harmonic motion 50
- Waves on a String 42
- Waves optics 32
- Work,Power and Energy 48

- Complex Number 59
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- Matrices 34
- Permutations and Combinations 49
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- Limit,Continuity and Differentiation 41
- Applications of Derivatives 44
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- Bionomial theorem 35
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- Parabola 47
- Inverse trigonometric functions 25
- Solutions of Triangle 40
- Straight Line 42
- Mathematical Reasoning 20
- Indefinite integration 17
- Basic Mathematics 27

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Answer post (66)

The best method to reduce random error is A) To change the instrument used for measurement B)... Post date: 13 -Apr-20 | 0 | 183 |

If the units of length and force are increased four times, then the unit of energy... Post date: 01 -Apr-20 | 0 | 858 |

Electrolytic reduction method is used in the extraction of (a) Highly electronegative... Post date: 12 -Mar-20 | 0 | 808 |

Extraction of zinc from zinc blende is achieved by (jee advanced 2007) (a) Electrolytic... Post date: 12 -Mar-20 | 0 | 753 |

\(\int 4sinxcos{x\over2}cos{3x\over2}dx\) ... Post date: 17 -Feb-20 | 0 | 1.03 K |

Find the reagent used to bring about following conversions. ... Post date: 15 -Feb-20 | 0 | 799 |

Which one of the following pairs is not correctly matched? (a) Terylene: Condensation polymer of... Post date: 14 -Feb-20 | 0 | 617 |

Orlon is a polymer of- (a) Styrene (b) Tetrafluoroethylene (c) Vinyl chloride (d)... Post date: 14 -Feb-20 | 0 | 13 |

The final product (Z) is the following sequence of reactions \(CH _3CH_2 ... Post date: 11 -Feb-20 | 0 | 268 |

The compound with the highest boiling point is: (A) n–Pentane (B) n–Hexane (C)... Post date: 10 -Feb-20 | 0 | 665 |

The decreasing order of the anti-knocking value of octane number of the following is \((I)... Post date: 09 -Feb-20 | 0 | 789 |

Positive numbers x, y and z satisfy \(xyz = 10^{11}\) and \((log_{10} x) (log_{10} yz) +... Post date: 08 -Feb-20 | 0 | 219 |

The covalent radii of transition metals decrease from left to right in a period because (a) the... Post date: 08 -Feb-20 | 0 | 352 |

Which of the following statements is incorrect ? (a) The compounds formed by the 3d transition... Post date: 08 -Feb-20 | 0 | 883 |

Number of integral value(s) of x satisfying \(4(tan^{-1} x)^2+(tan^{-1} x)-3\le0\) (A) 1 (B)... Post date: 05 -Feb-20 | 0 | 912 |

Major product of this reaction is ... Post date: 25 -Jan-20 | 0 | 766 |

Hydrogen bonding is maximum in [jee main 1987] (A) ethanol (B) diethyl ether (C) ethyl... Post date: 22 -Jan-20 | 0 | 514 |

An organic compound (A) with molecular formula \(C_7H_8O\) dissolves in NaOH and gives... Post date: 21 -Jan-20 | 0 | 623 |

When 50% solution of \(H_2SO_4\) is electrolysed by passing a current of high density at low... Post date: 12 -Jan-20 | 0 | 412 |

The number of solution of the equation, \(\displaystyle\sum_{r=1}^{5}cos(rx)=0\) lying... Post date: 11 -Jan-20 | 0 | 952 |

If \(tan(\alpha)={x^2-x\over x^2-x+1}\) and \(tan(\beta)={1\over 2x^2-2x+1}(x\ne0,1),\) ... Post date: 11 -Jan-20 | 0 | 351 |

The equation of the plane through the line of intersection of the planes 2x + y – z – 4... Post date: 28 -Dec-19 | 0 | 566 |

A variable plane \({x\over a}+{y\over b}+{z\over c}=1\) at a unit distance from origin cuts the... Post date: 28 -Dec-19 | 0 | 93 |

The eccentricity of the hyperbola whose latus rectum is 8 and conjugate axis is equal to half the... Post date: 23 -Dec-19 | 0 | 934 |

An ellipse passes through the points \(( - 3,1)\) and \((2, - 2)\) & its principal axis are... Post date: 22 -Dec-19 | 0 | 5 |

The length of the latus rectum of the hyperbola \({x^2\over a^2}-{y^2\over... Post date: 22 -Dec-19 | 0 | 178 |

The equation of the common tangent touching the circle (x – 3)\(^2\) + y\(^2\) = 9 and the... Post date: 16 -Dec-19 | 0 | 447 |

Suppose that the Sum consists entirely of hydrogen atom and releases the energy by the nuclear... Post date: 15 -Dec-19 | 0 | 239 |

\(2NOBr(g) \to 2N)(g) +Br_2(g)\)ï€«. If nitrosyl bromide (NOBr) is 33.33% dissociation at... Post date: 04 -Dec-19 | 0 | 951 |

... Post date: 01 -Jan-70 | 0 |

The van’t Hoff factor for a dilute aqueoussolution of glucose is (A)... Post date: 01 -Dec-19 | 0 | 47 |

Find out total number of pðœ‹-dðœ‹ bonds present in any one of its structures in case... Post date: 30 -Nov-19 | 0 | 920 |

The parameter, on which the value of the determinant \(\begin{vmatrix} 1 & a & a^2... Post date: 20 -Oct-19 | 0 | 801 |

For A = \(\begin {vmatrix} 4 & 2i \\ i & 1 \end {vmatrix}\), (A – 2I) (A –... Post date: 20 -Oct-19 | 0 | 24 |

There are 10 red balls of different shades & 9 green balls of identical shades. Then the number... Post date: 20 -Oct-19 | 0 | 773 |

The quadratic polynomial P(x) = ax\(^2\) + bx + c has two different zeroes including –2. The... Post date: 19 -Oct-19 | 0 | 380 |

for all 'x',\(x^2+2ax+(10-3a)>0\) , then the interval in which ‘a’ lies is... Post date: 18 -Oct-19 | 0 | 647 |

if q1, q2, q3 are the roots of the equation, x\(^3\) + 64 = 0, then the value of the... Post date: 17 -Oct-19 | 0 | 566 |

A man walks a distance of 3 units from the origin towards the North-West (N 45° E) direction.... Post date: 17 -Oct-19 | 0 | 186 |

ne quarter section is cut from a uniform circular disc of radius R. This section has a mass M. It... Post date: 12 -Oct-19 | 0 | 111 |

A heavy seesaw (i.e., not mass less) is out of balance. A light girl sits on the end that is tilted... Post date: 12 -Oct-19 | 0 | 179 |

In a certain nuclear reactor, a radioactive nucleus is being produced at a constant rate =1000/s.... Post date: 11 -Oct-19 | 0 | 830 |

The rest mass of the deuteron,\(_1\)H\(^2\), is equivalent to an energy of 1876 MeV, the rest mass... Post date: 10 -Oct-19 | 0 | 883 |

Let u be denoted one atomic mass unit. One atom of an element of mass number A has mass exactly... Post date: 10 -Oct-19 | 0 | 516 |

A cylindrical block of length 0.4 m and area of cross-section 0.04m² is placed coaxially on a... Post date: 09 -Oct-19 | 0 | 500 |

Starting with the same initial conditions, and ideal gas expands from volume V\(_1\) to... Post date: 09 -Oct-19 | 0 | 929 |

the connection shown in Fig. are established with the switch S open. How much charge will... Post date: 06 -Oct-19 | 0 | 499 |

A conducting ring of mass 2kg and radius 0.5m is placed on a smooth horizontal plane. The ring... Post date: 05 -Oct-19 | 0 | 474 |

Sound of wavelength \(\lambda\) passes through a Quincke’s tube which is adjusted to give a... Post date: 03 -Oct-19 | 0 | 464 |

Two plane mirrors are inclined at 70°. A ray incident on one mirror at an angle... Post date: 01 -Oct-19 | 0 | 217 |

A block of mass m is held at rest on a smooth horizontal floor. A light frictionless, small pulley... Post date: 20 -Sep-19 | 0 | 429 |

A simple pendulum having a bob of mass m is suspended from the ceiling of a car used in a stunt... Post date: 20 -Sep-19 | 0 | 100 |

A small block of mass m is kept on a rough inclined surface of inclination \(\theta\)fixed in a... Post date: 15 -Sep-19 | 0 | 816 |

A string of negligible mass going over a clamped pulley of mass m supports a block of mass M as... Post date: 14 -Sep-19 | 0 | 986 |

A uniform chain of length L and mass M is lying on a smooth table and one third of its length is... Post date: 14 -Sep-19 | 0 | 916 |

A block of mass 10kg is suspended through two light spring balances as shown in Fig. (A)... Post date: 13 -Sep-19 | 0 | 295 |

When a bird of weight W alights on a stretched wire, the tension T in the wire may be: (A)... Post date: 13 -Sep-19 | 0 | 567 |

As shown in the Fig. 22.85, P and Q are two coaxial conducting loops separate by some distance.... Post date: 12 -Sep-19 | 0 | 367 |

Two identical coaxial circular loops carry a current I each circulating in the same direction. If... Post date: 12 -Sep-19 | 0 | 787 |

A point charge +q & mass 100 gm experiences a force of 100 N at a point at a distance 20 cm... Post date: 09 -Sep-19 | 0 | 756 |

An electron of mass \(m_e\), initially at rest, moves through a certain distance in a uniform... Post date: 07 -Sep-19 | 0 | 55 |

L, C and R represents physical quantities inductance, capacitance and resistance. The combination... Post date: 03 -Sep-19 | 0 | 291 |

Prove that in case of oblique elastic collision of two particles of equal mass out of which one is... Post date: 31 -Aug-19 | 0 | 139 |

A rectangular loop with a sliding connector of length 10 cm is situated in uniform magnetic field... Post date: 31 -Aug-19 | 0 | 817 |

A circular plate of uniform thickness has a diameter of 56 cm. A circular portion of diameter 42 cm... Post date: 30 -Aug-19 | 0 | 570 |

Look at the drawing given in the Fig. ,which has been drawn with ink of uniform... Post date: 29 -Aug-19 | 0 | 555 |