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## JEE Main 2020 (Online) 7th January Morning Slot

Exam Held on Tue Jan 07 2020 03:30:00 GMT+0000 (Coordinated Universal Time)
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## Chemistry

The atomic radius of Ag is closed to :
The theory that can completely/properly explain the nature of bonding in [Ni(Co)...
Oxidation number of potassium in K<sub>2</sub>O. K<sub>2</sub>O<sub>2</sub> and ...
Amongst the following statements, that which was not proposed by Dalton was :
The increasing order to P<sub>kb</sub> for the following compounds will be : <im...
At 35<sup>o</sup>C, the vapour pressure of CS<sub>2</sub> is 512 mm. Hg and tha...
A solution of m-chloronailimne, m-chlorophenol and m-chlorobenzoic acid in ethya...
1- methyl ethylene oxide when treated with an excess of HBr produces :
The electron gain enthalpy (in KJ/mol) of fluorine, chlorine, bromine and iodine...
The IUPAC name of complex [Pt(NH<sub>3</sub>)<sub>2</sub>Cl(NH<sub>2</sub>CH<sub...
The relative strength of interionic/intermolecular forces in decreasing order is...
Match the following :<br> (i) Riboflavin &nbsp;&nbsp;&nbsp;(a) Beriberi<br> (ii)...
In comparison to the zeolite process for the removal of permanent hardness, the ...
The purest from of commercial iron is :
The dipole of CCl<sub>4</sub>, CHCl<sub>3</sub> and CH<sub>4</sub> are in the or...
Consider the following reaction :<br><br> $${\left( {C{H_3}} \right)_3}CCH\left(... Consider the following reaction :<br><br> <img src="https://imagex.cdn.examgoal.... Given that the standard potentials (E<sup>o</sup>) of Cu<sup>2+</sup>/Cu and Cu<... What is the product of following reaction ? <img src="https://imagex.cdn.examgoa... The number of orbitals associated with quantum number n = 5, m<sub>s</sub> = +$$...
Two solutions, A and B, each of 100L was made by dissolving 4g of NaOH and 9.8 g...
The number of chiral carbons in chloramphenicol is .
During the nuclear explosion, one of the products is <sup>90</sup>Sr with half l...
For the reaction :<br><br> A($$l$$) $$\to$$ 2B(g)<br><br> $$\Delta U = 2.1\,kc... Chlorine reacts with hot and concentrated NaOH and produces compounds (X) and (Y... ## Mathematics Let x<sup>k</sup> + y<sup>k</sup> = a<sup>k</sup>, (a, k &gt; 0 ) and$${{dy} \o...
Let $$\alpha$$ be a root of the equation x<sup>2</sup> + x + 1 = 0 and the <br>...
A vector $$\overrightarrow a = \alpha \widehat i + 2\widehat j + \beta \widehat... If$${\mathop{\rm Re}\nolimits} \left( {{{z - 1} \over {2z + i}}} \right) = 1$$,... Let$$\alpha $$and$$\beta $$be two real roots of the equation <br>(k + 1)tan<... Total number of 6-digit numbers in which only and all the five digits 1, 3, 5, 7... If y = mx + 4 is a tangent to both the parabolas, y<sup>2</sup> = 4x and x<sup>2... The area of the region, enclosed by the circle x<sup>2</sup> + y<sup>2</sup> = 2... If the distance between the foci of an ellipse is 6 and the distance between its... Let the function, ƒ:[-7, 0]$$ \to $$R be continuous on [-7,0] and differentiable... An unbiased coin is tossed 5 times. Suppose that a variable X is assigned the va... The greatest positive integer k, for which 49<sup>k</sup> + 1 is a factor of the... If ƒ(a + b + 1 - x) = ƒ(x), for all x, where a and b are fixed positive real num... Let P be a plane passing through the points (2, 1, 0), (4, 1, 1) and (5, 0, 1) a... If g(x) = x<sup>2</sup> + x - 1 and<br> (goƒ) (x) = 4x<sup>2</sup> - 10x + 5, th... If the system of linear equations<br> 2x + 2ay + az = 0<br> 2x + 3by + bz = 0<br... If$$y\left( \alpha \right) = \sqrt {2\left( {{{\tan \alpha + \cot \alpha } \o...
If y = y(x) is the solution of the differential equation, $${e^y}\left( {{{dy} \... The logical statement (p$$ \Rightarrow $$q)$$\Lambda $$( q$$ \Rightarrow $$... If the sum of the coefficients of all even powers of x in the product<br> (1 + x... Five numbers are in A.P. whose sum is 25 and product is 2520. If one of these fi... Let S be the set of points where the function, ƒ(x) = |2-|x-3||, x$$ \in $$R i... Let A(1, 0), B(6, 2) and C$$\left( {{3 \over 2},6} \right)$$be the vertices of... If the variance of the first n natural numbers is 10 and the variance of the fir...$$\mathop {\lim }\limits_{x \to 2} {{{3^x} + {3^{3 - x}} - 12} \over {{3^{ - x/2...

## Physics

A 60 HP electric motor lifts an elevator having a maximum total load capacity of...
Consider a circular coil of wire carrying constant current I, forming a magnetic...
A polarizer - analyser set is adjusted such that the intensity of light coming o...
The radius of gyration of a uniform rod of length $$l$$, about an axis passing t...
A long solenoid of radius R carries a time (t) - dependent current <br>I(t)=I<su...
Two moles of an ideal gas with $${{{C_P}} \over {{C_V}}} = {5 \over 3}$$ are mix...
Two infinite planes each with uniform surface charge density to are kept in such...
Speed of a transverse wave on a straight wire (mass 6.0 g, length 60 cm and area...
A satellite of mass m is launched vertically upwards with an initial speed u fro...
The time period of revolution of electron in its ground state orbit in a hydroge...
If we need a magnification of 375 from a compound microscope of tube length 150 ...
<img src="https://imagex.cdn.examgoal.net/7k9k2k5dm5zp1/596ed3e9-4253-42c8-b721-...
Which of the following gives a reversible operation?
The current I<sub>1</sub> (in A) flowing through 1 $$\Omega$$ resistor in the f...
If the magnetic field in a plane electromagnetic wave is given by <br>$$\overrig... <img src="https://imagex.cdn.examgoal.net/7k9k2k5dsy4jv/33a14fef-8869-4709-9125-... A particle (m = 1 kg) slides down a frictionless track (AOC) starting from rest ... A litre of dry air at STP expands adiabatically to a volume of 3 litres. If$$\g...
A beam of electromagnetic radiation of intensity 6.4 × 10<sup>–5</sup> W/cm<sup>...
A LCR circuit behaves like a damped harmonic oscillator. Comparing it with a phy...
Three point particles of masses 1.0 kg, 1.5 kg and 2.5 kg are placed at three co...
A non-isotropic solid metal cube has coefficients of linear expansion as :<br> 5...
A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K....
Visible light of wavelength 6000 $$\times$$ 10<sup>-8</sup> cm falls normally ...
A loop ABCDEFA of straight edges has six corner points A(0, 0, 0), B(5, 0, 0), C...

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