| 2023-05-16 | When a certain amount of octane, \( \mathrm{C}_{8} \mathrm{H}_{18} \), is burnt completely, \( 7... | 5:53 | 5 | |
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| 2023-05-16 | A large number of liquid drops each of radius \( a \) are merged to from a single spherical drop... | 7:10 | 1 | |
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| 2023-05-16 | Two point charges \( Q \) and \( -3 Q \) are placed some distance apart. If the electic field at... | 3:48 | 48 | |
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| 2023-05-16 | Let a function \( f:(0, \infty) \rightarrow(0, \infty) \) be defined by \( f(x)= \) \( \left|1-\... | 6:01 | 2 | |
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| 2023-05-16 | Consider a compound slab consisting of two different materials having equal thicknesses and ther... | 2:47 | 7 | |
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| 2023-05-16 | In the compound given below,
the correct order of acidity of the positions \( (X),(Y) \) and \( ... | 5:42 | 2 | |
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| 2023-05-16 | Two \(APs\) have the same common difference. The difference between their \(100th\) terms is \(1... | 4:03 | 0 | |
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| 2023-05-16 | The density (in \( \mathrm{g} \mathrm{mL}^{-1} \) ) of a \( 3.60 \mathrm{M} \) sulphuric acid so... | 8:11 | 9 | Let's Play |
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| 2023-05-16 | Two force in the ratio \(1:2\) act simultaneously on a particle. The resultant of these forces i... | 3:03 | 7 | |
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| 2023-05-16 | Let \( M=\left[\begin{array}{lll}0 & 1 & a \\ 1 & 2 & 3 \\ 3 & b & 1\end{array}\right] \) and ad... | 21:37 | 0 | |
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| 2023-05-16 | An electric dipole of moment \( \vec{p} \) is placed normal to the lines of force of electric in... | 2:18 | 10 | |
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| 2023-05-16 | Prove that
\[\frac{\cos \left(90^{\circ}+\theta\right) \sec (-\theta) \tan \left(180^{\circ}-\th... | 4:11 | 8 | |
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| 2023-05-16 | Mendels law of independent assortment does not hold true for the genes that are located closely ... | 2:36 | 4 | |
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| 2023-05-16 | How many moles of \( \mathrm{P}_{4} \mathrm{O}_{6} \) and \( \mathrm{P}_{4} \mathrm{O}_{10} \) w... | 6:20 | 0 | |
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| 2023-05-16 | The number of real solutions of the equation math xmlns=http://www.w3.org/1998/Math/MathMLmsupmi... | 6:35 | 0 | |
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| 2023-05-16 | Two identical point charges are placed at a separation of d . P is a point on the line joining t... | 6:56 | 6 | |
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| 2023-05-16 | Show that : \( \cos 2 \theta \cos \frac{\theta}{2}-\cos 3 \theta \cos \frac{9 \theta}{2}=\sin 5 ... | 4:29 | 1 | Show |
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| 2023-05-16 | Two particles \( A \) and \( B \) having charges \( q \) and \( 2 q \) respectively are placed o... | 8:15 | 3 | |
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| 2023-05-16 | Two vectors \( \vec{A} \) and \( \vec{B} \) are such that \( \vec{A}+\vec{B}=\vec{A}-\vec{B} \).... | 2:48 | 5 | |
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| 2023-05-16 | Prove that
(i) \( \frac{1}{3+\sqrt{7}}+\frac{1}{\sqrt{7}+\sqrt{5}}+\frac{1}{\sqrt{5}+\sqrt{3}}+\... | 9:26 | 25 | |
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| 2023-05-16 | Express the surd \( 2 \sqrt{3} \) as a pure surd. | 1:28 | 11 | |
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| 2023-05-16 | Value of \( 24.36+0.0623+256.2 \) will be-
(1) \( 280.6 \)
(2) \( 280.8 \)
(3) \( 280.7 \)
(4) \... | 2:58 | 3 | |
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| 2023-05-16 | The number of Faradays \( (\mathrm{F}) \) required to produce \( 20 \mathrm{~g} \) of calcium fr... | 2:38 | 6 | |
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| 2023-05-16 | \( \Delta_{1}=\left|\begin{array}{ccc}y^{5} z^{6}\left(z^{3}-y^{3}\right) & x^{4} z^{6}\left... | 20:58 | 11 | |
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| 2023-05-16 | Consider the reaction,math xmlns=http://www.w3.org/1998/Math/MathMLmn2/mnmsubmrowmo /momi m... | 2:53 | 6 | |
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| 2023-05-16 | A square of \( n \) units by \( n \) units is divided into \( n^{2} \) squares each of area 1 sq... | 4:01 | 7 | |
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| 2023-05-16 | Two capacitors \( C_{1} \) and \( C_{2} \) are charged to \( 120 \mathrm{~V} \) and \( 200 \math... | 3:02 | 0 | |
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| 2023-05-16 | The number of molecule at NTP in \( 1 \mathrm{ml} \) of an ideal gas will be
(1) \( 6 \times 10^... | 2:24 | 32 | |
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| 2023-05-16 | If the pressure greater than atmospheric pressure is applied to pure water or a solution, its wa... | 2:33 | 0 | |
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| 2023-05-16 | If in a p-n junction, a square input signal of \( 10 \mathrm{~V} \) is applied, as shown
then th... | 3:25 | 10 | Show |
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| 2023-05-16 | The set of real value(s) of \( p \) for which the equatio \( |2 \mathrm{x}+3|+|2 \mathrm{x}-3|=\... | 9:04 | 28 | |
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| 2023-05-16 | The molal freezing point constant for water is \( 1.86 \mathrm{~K} \). molality \( { }^{-1} \). ... | 4:39 | 4 | |
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| 2023-05-16 | A solid cylinder of mass \( M \) and radius \( R \) rolls without slipping down an inclined plan... | 6:09 | 0 | |
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| 2023-05-16 | The ratio stress/strain remains constant for small deformation of a metal wire. When the deforma... | 4:00 | 7 | |
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| 2023-05-16 | \( 20 \mathrm{~g} \) of an ideal gas contains only atoms of \( \mathrm{S} \) and \( \mathrm{O} \... | 2:23 | 4 | |
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| 2023-05-16 | Vapour pressure of water at \( 293 \mathrm{~K} \) is \( 17.535 \mathrm{~mm} \) \( \mathrm{Hg} \)... | 6:21 | 3 | |
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| 2023-05-16 | The number of solution of \( \log _{2}(x+5)=6-x \) is (1) 2 (2) 0 (3) 3 (4) 1 | 6:16 | 21 | Vlog |
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| 2023-05-16 | Electromagnetic radiation of wavelength \( 242 \mathrm{~nm} \) is just sufficient to ionise sodi... | 4:45 | 25 | |
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| 2023-05-16 | The switch shown in the circuit is closed at \( t=0 \). The current drawn from the battery by th... | 5:02 | 2 | Show |
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| 2023-05-16 | A line \(l\) passing through the origin is perpendicular to the lines
\(l_{1}:(3+t)\hat{i}... | 16:14 | 2 | |
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| 2023-05-16 | If the \( E_{\text {cell }}^{\circ} \) for a given reaction has a negative value, then which of ... | 3:05 | 0 | |
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| 2023-05-16 | The mole fraction of a solute in a solution is 0.1. At 298 \( \mathrm{K} \), molarity of this so... | 7:13 | 6 | |
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| 2023-05-16 | The temperature of \( 5 \mathrm{~mol} \) of a gas which was held at constant volume was changed ... | 3:09 | 1 | |
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| 2023-05-16 | For the reaction : \( 2 A+B \rightarrow A_{2} B \) the rate \( =k[A][B]^{2} \) with \( k=2.0 \ti... | 7:04 | 1 | |
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| 2023-05-16 | If the time period \( (T) \) of vibration of a liquid drop depends on surface tension \( (S) \),... | 4:48 | 20 | |
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| 2023-05-16 | Liquids \( P \) and \( Q \) form an ideal solution. The vapour pressures of pure liquids \( \mat... | 12:09 | 0 | |
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| 2023-05-16 | The values of two resistors are \( R_{1}=(6 \pm 0.3) \mathrm{k} \Omega \) and \( R_{2}=(10 \pm 0... | 5:31 | 18 | |
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| 2023-05-16 | The rate of a gaseous reaction is given by the expression \( k[\mathrm{~A}] \) math xmlns=http:/... | 3:40 | 1 | |
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| 2023-05-16 | Number of real solutions of the equation \( \sqrt{\log _{10}(-x)} \) \( =\log _{10} \sqrt{\mathr... | 3:12 | 36 | Vlog |
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| 2023-05-16 | Consider a composite slab consisting of two different materials having equal thickness and therm... | 3:59 | 1 | |
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| 2023-05-16 | \( \mathrm{N}_{2} \mathrm{H}_{4} \), Hydrazine a rocket fuel can be produced according to the fo... | 4:31 | 2 | |
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| 2023-05-16 | A potentiometer wire is \( 100 \mathrm{~cm} \) long and a constant potential difference is maint... | 4:11 | 0 | |
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| 2023-05-16 | Let \( \mathrm{R} \) be set of points inside a rectangle of \( \operatorname{sides~} a \) and \(... | 5:58 | 7 | |
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| 2023-05-16 | In which of the following, the reaction proceeds towards completion
(1) \( K=10^{3} \)
(2) \( K=... | 2:06 | 1 | |
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| 2023-05-16 | A car, starting from rest, accelerates at the rate \( f \) through a distance \( S \), then cont... | 4:44 | 12 | |
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| 2023-05-16 | If \( n \) is an odd integer, then show that \( n^{2}-1 \) is divisible by 8 .( | 4:49 | 16 | Show |
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| 2023-05-16 | The vapour density of gas \( \mathrm{A} \) is four times that of \( \mathrm{B} \). If molecular ... | 2:23 | 15 | |
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| 2023-05-16 | एक पहिया एक मिनट में \( 360^{\circ} \) परिक्रमण करता है तो एक सेकंड में कितने रेडियन माप कोण बनाएगा? | 3:57 | 1 | |
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| 2023-05-16 | The depression in freezing point of water observed for the same amount of acetic acid, trichloro... | 4:32 | 3 | |
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| 2023-05-16 | \( T_{50} \) of first-order reaction is \( 10 \mathrm{~min} \). Starting with \( 10 \mathrm{~mol... | 4:02 | 6 | |
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| 2023-05-16 | \(\mathrm { N } _ { 2 } \mathrm { O } _ { 5 } \) decomposes to \( \mathrm { NO } _ { 2 } \) and ... | 10:15 | 2 | |
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| 2023-05-16 | A certain dye absorbs lights of \(\lambda= 400nm\) and then fluorescence light of wavelengt... | 3:37 | 2 | |
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| 2023-05-16 | The magnitudes of vectors \( \vec{A}, \vec{B} \) and \( \vec{C} \) are 3,4 and 5 units respectiv... | 2:40 | 2 | |
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| 2023-05-16 | One mole of non volatile solute is dissolved in two mole of water. The vapour pressure of the so... | 2:57 | 44 | |
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| 2023-05-16 | span style=font-weight: 400;Determine the molecular formula of an oxide of iron in which the mas... | 6:43 | 8 | |
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| 2023-05-16 | How many significant figures are there in 0.0020 ? | 4:04 | 1 | |
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| 2023-05-16 | Rationalise the denominator of \( \frac{1}{7+3 \sqrt{2}} \). | 1:51 | 1 | |
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| 2023-05-16 | Which of the following physical quantities is not conserved?
(a) Energy
(b) Linear momentum
(c) ... | 4:24 | 0 | |
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| 2023-05-16 | It is difficult to cook vegetables on hills and mountains. Explain the reason. | 5:10 | 9 | |
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| 2023-05-16 | Estimate the number of free electrons in \( 36 \mathrm{~g} \) of water and the negative charge p... | 4:15 | 1 | |
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| 2023-05-16 | Values of \( x \) satisfying: \( 7 \leq|x|+4<10 \) | 2:08 | 9 | |
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| 2023-05-16 | span style=font-weight: 400;A astronomical telescope has objective and eyepiece of focal lengths... | 4:10 | 3 | |
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| 2023-05-16 | A sample of water from a large swimming pool has a resistance of \( 10,000 \Omega \) at \( 25^{\... | 5:52 | 2 | |
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| 2023-05-16 | What is the need for measurement of a physics quantity? | 4:18 | 23 | |
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| 2023-05-16 | An \( \alpha \)-particle of kinetic energy \( 7.68 \mathrm{MeV} \) is projected towards the nucl... | 5:16 | 54 | Let's Play |
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| 2023-05-16 | If \(\sqrt{2^{n}}\) = 64, what is the value of \(n\)? | 1:41 | 0 | |
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| 2023-05-16 | An aqueous solution of metal ion \( M_{1} \) reacts separately with reagents \( Q \) and \( R \)... | 6:35 | 4 | |
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| 2023-05-16 | The mass of \( 3.2 \times 10^{5} \) atoms of an element is \( 8.0 \times \) \( 10^{-18} \mathrm{... | 2:30 | 23 | |
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| 2023-05-16 | The range of \( \frac{1+x^{2}}{x^{2}} \) is: | 1:55 | 4 | |
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| 2023-05-16 | A stationary \( U^{238} \) nucleus emits an \( \alpha \)-particle \( \left({ }_{2} \mathrm{He}^{... | 4:04 | 1 | Let's Play |
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| 2023-05-16 | Solve \[\begin{array}{l}2(x-3)+3(y-5)=0 \\5(x-1)+4(y-4)=0\end{array}\] | 4:37 | 9 | |
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| 2023-05-16 | Find the value of \(x\) which satisfies, \(\displaystyle x+\log _{10}\left ( 1+2^{x} \right )= x... | 3:39 | 13 | Let's Play |
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| 2023-05-16 | Prove that \( \tan 9^{\circ}-\tan 27^{\circ}-\tan 63^{\circ}+\tan 81^{\circ}=4 \) | 5:15 | 0 | |
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| 2023-05-16 | Which of the following atom has more electrons than neutrons | 4:12 | 1 | |
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| 2023-05-16 | Let \( f:(0,1) \rightarrow(0,1) \) be a differentiable function such that \( f^{\prime}(x) \neq ... | 13:05 | 11 | |
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| 2023-05-16 | Consider the charge configuration and spherical Gaussian surface as shown in the figure. When ca... | 4:34 | 6 | Show |
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| 2023-05-16 | The mass of one molecule of water is approximately | 2:10 | 7 | |
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| 2023-05-16 | The maximum radial probability in \( 1 \mathrm{s} \) orbital occurs at a distance when : [ \( r_... | 7:41 | 5 | |
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| 2023-05-16 | Gausss theorem
The term electric flux implies some kind of flow. Flux is the property of any vec... | 3:15 | 2 | |
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| 2023-05-16 | Find the linear relation between the components of the ordered pairs of the relation \( \mathrm{... | 3:41 | 4 | |
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| 2023-05-16 | \( 0.6 \mathrm{~mL} \) of acetic acid \( \left(\mathrm{CH}_{3} \mathrm{COOH}\right) \), having d... | 9:15 | 12 | |
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| 2023-05-16 | In a school, there are 20 teachers who teach Maths or Physics. Out of these, 12 teach Maths and ... | 3:41 | 2 | |
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| 2023-05-16 | If \( A=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & 1 & 0 \\ a & b & -1\end... | 4:55 | 0 | |
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| 2023-05-16 | math xmlns=http://www.w3.org/1998/Math/MathMLmfencedmrowmsupmix/mimn2/mn/msupmo-/momn2/mnmix/mi/... | 6:35 | 0 | |
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| 2023-05-16 | Five capacitors are connected as shown in the figure.Initially \( \mathrm{S} \) is opened and al... | 6:52 | 0 | Show |
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| 2023-05-16 | Concentrated aqueous sulphuric acid is \( 98 \% \) \( \mathrm{H}_{2} \mathrm{SO}_{4} \) by mass ... | 5:04 | 9 | Let's Play |
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| 2023-05-16 | \( 10 \mathrm{~mL} \) of sulphuric acid solution (sp. gr. \( =1.84 \) ) contains \( 98 \% \) by ... | 6:51 | 0 | Let's Play |
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| 2023-05-16 | span style=font-weight: 400; If minute is the unit of time, math xmlns=http://www.w3.org/19... | 3:58 | 12 | |
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| 2023-05-16 | Two large thin conducting plates with a small gap in between are placed in a uniform electric fi... | 5:08 | 10 | |
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| 2023-05-16 | If \( \alpha \) and \( \beta \) are the zeros of a quadratic polynomial such that \( \alpha+\bet... | 3:47 | 3 | Let's Play |
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