| 2023-06-19 | Statement I : A null vector is a vector whose magnitude is zero and direction is arbitrary.
Stat... | 2:58 | 1 | |
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| 2023-06-19 | If \( \log _{4} 5=a \) and \( \log _{5} 6=b \), then \( \log _{3} 2=? \) | 3:02 | 7 | Vlog |
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| 2023-06-19 | दर्शाइए कि कोई भी धनात्मक विषम पूर्णांक \( 6 q+1 \) या \( 6 q+3 \) या \( 6 q+5 \) के रूप का होता... | 6:36 | 18 | |
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| 2023-06-19 | Visualise \( 4 . \overline{26} \) on the number line up to 4 decimal places. | 5:13 | 15 | |
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| 2023-06-19 | An organic acid contains \( C, H, O \) elements. A \( 4.24 \mathrm{mg} \) sample of organic acid... | 8:30 | 1 | |
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| 2023-06-19 | Solve the linear equation by substitution method of pair of linear equation in two variable \( P... | 3:25 | 10 | |
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| 2023-06-19 | Express \( \cos 5 A \) in term of \( \cos A \) | 4:45 | 9 | |
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| 2023-06-19 | If \( \Delta_{r}=\left|\begin{array}{ccc}r-1 & 1 & 0 \\ 2 & r & 3+r \\ r+1 & -1 & -2\end{array}\... | 4:59 | 5 | |
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| 2023-06-19 | दर्शाइए कि कोई भी धनात्मक विषम पूर्णांक \( 6 q+1 \) या \( 6 q+3 \) या \( 6 q+5 \) के रूप का होता... | 6:36 | 7 | |
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| 2023-06-19 | If \( n \in N \) and \( \Delta_{n}=\left|\begin{array}{ccc}n ! & (n+1) ! & (n+2) ! \\ (n+1) ! & ... | 6:52 | 2 | |
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| 2023-06-19 | Why is sulphuric acid not used during the reaction of alcohols with KI ? | 3:20 | 2 | Let's Play |
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| 2023-06-19 | Convert 82878 into Indian number system. | 2:21 | 4 | |
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| 2023-06-19 | Write a negative integer and a positive integer whose difference is -3 | 1:32 | 9 | |
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| 2023-06-19 | \( x \)-रक्ष के अनुदिश पिग्ड का विश्थापन समय पर निर्भर करता है, जो समीकरण \( \sqrt{x}=t+1 \) से ... | 3:16 | 0 | |
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| 2023-06-19 | A bulb emits light of wavelength \( 4500 A^{o} \). The bulb is rated as 150 watt and \( 8 \% \) ... | 2:52 | 3 | |
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| 2023-06-19 | एक इंजन, एक रबर के नल (होज पाइप) से पानी पम्प करता है। पानी पाइप से होकर जाता है और 2 मीसे के वे... | 3:42 | 2 | |
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| 2023-06-19 | Find the unit digit
\[
4 \times 9^{2} \times 4^{3} \times 9^{4} \times 4^{5} \times 9^{6} \times... | 5:33 | 2 | |
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| 2023-06-19 | A 100 watt bulb emits monochromatic light of wavelength \( 400 \mathrm{~nm} \). Calculate the nu... | 2:08 | 3 | |
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| 2023-06-19 | If \( f(x)=\sin x^{0} \), then find \( f(x) \) | 0:56 | 2 | |
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| 2023-06-19 | What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseou... | 2:33 | 8 | |
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| 2023-06-19 | Consider the unit cell given below:
The unit cell shown in the figure belongs to :
- A. NaCl typ... | 4:15 | 3 | Show |
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| 2023-06-19 | Find the current in each branches of the circuit. | 12:53 | 7 | |
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| 2023-06-19 | If \( A=\{x: x=4 n+1,2 \leq n \leq 5\} \) then the number of subsets of \( A \) is. | 2:18 | 2 | |
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| 2023-06-19 | Find LCM and HCF by prime factorisation Method:
1) 144
198
3) \( a=x^{3} y^{3} b=x y^{2} \)
4) \... | 4:27 | 3 | |
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| 2023-06-19 | If \( \lim _{x \rightarrow 0}\left(1+a x+b x^{2}\right)^{2 x}=e^{3} \), then | 3:15 | 4 | |
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| 2023-06-19 | Find the value of \( \mathrm{F} \). | 1:24 | 1 | |
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| 2023-06-19 | In this regular hexagon co-ordinate of point B is: | 3:17 | 2 | |
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| 2023-06-19 | If \( A=\left[\begin{array}{cc}\cos \theta & \sin \theta \\ -\sin \theta & \cos \theta\end{array... | 6:55 | 2 | |
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| 2023-06-19 | Copper sulphate crystals contain \( 25.45 \% \mathrm{Cu} \) and \( 36.07 \% \mathrm{H}_{2} \math... | 2:35 | 8 | Let's Play |
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| 2023-06-19 | Write structural formulas of the following compounds :
(i) 3,4,4,5-Tetramethylheptane
(ii) 2,5-D... | 2:36 | 0 | |
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| 2023-06-19 | \( \frac{(4 \times 7+2)}{(5 \times 8+2)} \frac{(6 \times 9+2)(8 \times 11+2) \cdots(100 \times 1... | 7:06 | 4 | |
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| 2023-06-19 | Convert 1 joule to ergs \( \Rightarrow \) Unit = energy \( M L^{2} T^{-2} \) | 4:40 | 4 | |
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| 2023-06-19 | Frequency of sound that can be produced by a pipe depends on length (1) of the pipe, atmospheric... | 4:20 | 9 | |
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| 2023-06-19 | A bulb emits light of wavelength \( \lambda=4500 \AA \). The bulb is rated as 150 watt and \( 8 ... | 3:16 | 1 | |
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| 2023-06-19 | Describe the state of hybridization, the shape and the magnetic behaviour of the following compl... | 7:47 | 0 | |
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| 2023-06-19 | Two charges, each equal to \( \mathrm{q} \), are kept at \( \mathrm{x}=-\mathrm{a} \) and \( \ma... | 5:20 | 3 | |
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| 2023-06-19 | Which hydrogen like species will have same radius as that of Bohr orbit of hydrogen atom ?
(a) \... | 3:18 | 1 | |
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| 2023-06-19 | For the electrolytic production of \( \mathrm{NaClO}_{4} \) from \( \mathrm{NaClO}_{3} \) as per... | 4:04 | 3 | |
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| 2023-06-19 | For some elements I.E. \& Flectron Gain enthalpy data are given below.
\begin{tabular}{|l|l|l|l|... | 8:26 | 1 | Let's Play |
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| 2023-06-19 | For the following circuit, what is the valueof total resistance between \( \mathrm{X} \) and \( ... | 3:06 | 2 | |
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| 2023-06-19 | Let \( S \) be the set of all \( (\alpha, \beta), \pi\alpha, \beta2 \pi \), for which the comple... | 12:43 | 10 | Let's Play |
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| 2023-06-19 | Draw the structure of \( \mathrm{XeF}_{5}^{-} \). | 2:48 | 1 | |
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| 2023-06-19 | The density of \( 3 \mathrm{M} \) solution of \( \mathrm{NaCl} \) is \( 1.25 \mathrm{~g} / \math... | 4:44 | 11 | |
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| 2023-06-19 | Assertion: The graph between \( \mathrm{P} \) and \( \mathrm{Q} \) is a straight line when \( P ... | 2:37 | 1 | |
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| 2023-06-19 | Value of \( \left(\cot 9^{\circ}-\cot 27^{\circ}-\cot 63^{\circ}+\cot 81^{\circ}\right) \) is eq... | 4:43 | 3 | |
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| 2023-06-19 | If 10 times the 10 th term of an A.P. is equal to 15 times the 15 th term, show that 25 th term ... | 2:16 | 6 | Show |
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| 2023-06-19 | The circuit shown below acts as a) tuned filter b) low pass filter c) high pass filter d) rectifier. | 2:37 | 4 | Show |
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| 2023-06-19 | Identify meso compounds: A. B. C. D. | 4:25 | 3 | |
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| 2023-06-19 | What is the formula of equal set? | 1:33 | 3 | |
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| 2023-06-19 | Find the relation between \( \mathrm{x} \) and \( \mathrm{y} \). | 1:53 | 1 | |
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| 2023-06-19 | \( \begin{array}{lll}\text { Subsequent group } & \text { Sec Prefix } & \text { Sub }^{n} \quad... | 2:56 | 2 | |
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| 2023-06-19 | An aqeous solution of urea is made by dissolving \( 10 \mathrm{~g} \) of urea in \( 90 \mathrm{~... | 3:49 | 1 | |
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| 2023-06-19 | \( S_{r}=\left|\begin{array}{lll}2 r & x & n(n+1) \\ 6 r^{2}-1 & y & n^{2}(2 n+3) \\ 4 r^{3}-2 n... | 5:41 | 1 | |
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| 2023-06-19 | \( 38.00 \mathrm{ml} \) of moist \( \mathrm{N}_{2} \) was collected at \( 27^{\circ} \mathrm{C} ... | 4:21 | 1 | |
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| 2023-06-19 | Solve for \( \mathrm{x} \)
(i) \( 7^{x+2}-\frac{1}{7} \cdot 7^{x+1}-14 \cdot 7^{x-1}+2.7^{x}=48 ... | 8:04 | 4 | |
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| 2023-06-19 | Solve \( \sin x \tan x-\sin x+\tan x-1=0 \) for \( x \in[0,2 \pi] \) | 3:05 | 0 | |
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| 2023-06-19 | Value of \( \left(\cot 9^{\circ}-\cot 27^{\circ}-\cot 63^{\circ}+\cot 81^{\circ}\right) \) is eq... | 4:43 | 2 | |
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| 2023-06-19 | \( 200 \mathrm{~mL} \) of \( 3 \mathrm{NHCl} \) was mixed with \( 200 \mathrm{~mL} \) of \( 6 \m... | 3:23 | 0 | |
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| 2023-06-19 | With the help of labelled diagram write and explain the following activities:
To study the elect... | 4:41 | 2 | Let's Play |
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| 2023-06-19 | दर्शाइए कि कोई भी धनात्मक विषम पूर्णांक \( 6 q+1 \) या \( 6 q+3 \) या \( 6 q+5 \) के रूप का होता... | 6:36 | 10 | |
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| 2023-06-19 | \( 6156 \div \sqrt{ } ? \times 53=4028 \) | 2:25 | 4 | |
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| 2023-06-19 | If equivalent mass of a metal is 12 then equivalent mass of its oxide is? | 2:16 | 4 | |
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| 2023-06-19 | रेखाओं \( y=x, 3 y=x \) और \( x+y=8 \) से बनने वाले त्रिभुज के शीर्षों के निर्देशांक आलेखीय विधि... | 3:18 | 14 | |
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| 2023-06-19 | Let \( A=\{x \in R: x \) is not a positive integer \( \} \). Define a function \( f: A \rightarr... | 5:40 | 13 | |
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| 2023-06-19 | If \( \cot A+\frac{1}{\cot A}=2 \), find the value of \( \cot ^{2} A+\frac{1}{\cot ^{2} A} \) | 1:28 | 0 | |
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| 2023-06-19 | Solve \[ 18-[8 \div 4\{16+20-15 \times 18\} 10] \] | 2:36 | 2 | |
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| 2023-06-19 | \[
f(u)=\left\{\begin{array}{cc}
a \sin \pi / 2(u+1) & u \leqslant 0 \\
\frac{\tan v-\sin u}{u^{... | 5:03 | 3 | |
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| 2023-06-19 | निम्नलिखित फलनों का \( x \) के सापेक्ष अवकल-गुणांक ज्ञात कीजिए : \( a^{x} \log _{e} x \) | 1:39 | 4 | Vlog |
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| 2023-06-19 | Statement 1: \( \int_{-3}^{3}\left(x^{3}+5\right) d x=30 \)
Statement 2. \( \mathrm{f}(\mathrm{x... | 4:34 | 1 | |
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| 2023-06-19 | एक. कण सरल रेखा \( y=3 x+5 \) के अनुदिश गतिशील है। कौनसे निर्देशांक के परिवर्तन की दर अधिक होगी ... | 1:24 | 0 | |
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| 2023-06-19 | Match the column
\begin{tabular}{|c|c|c|c|}
\hline & Column-I & & Column-II. \\
\hline A. & \( \... | 8:22 | 1 | |
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| 2023-06-19 | Solve for \( x, \frac{2}{x+3}+\frac{5}{3 x-1}=3 \) | 4:21 | 0 | |
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| 2023-06-19 | If \( a=\log _{4} 5 \) and \( b=\log _{5} 6 \), then the value of \( 2 a b-\log _{2} 3 \). | 2:29 | 0 | Vlog |
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| 2023-06-19 | Find the cube root of 857375 through estimation. | 5:30 | 5 | |
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| 2023-06-19 | Domain of definition of the function \( f(x)=\sqrt{\frac{3^{x}-4^{x}}{x^{2}-3 x-4}} \) is | 2:55 | 1 | |
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| 2023-06-19 | Solve \( 3 x^{2}-12 x=0 \)
When
(i) \( x \in N \)
(ii) \( x \in Z \)
(iii) \( x \in S \) where \... | 2:29 | 4 | |
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| 2023-06-19 | Find Period of the given function
\[
f(x+a)=\frac{1}{2}+\sqrt{f(x)-f^{2}(x)}, a0, \quad f(x) \ge... | 6:15 | 2 | |
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| 2023-06-19 | यदि \( p-\frac{\sin A}{\sin B} \) और \( q=\frac{\cos A}{\cos B} \) तो \( \tan A \) और \( \tan B ... | 7:39 | 3 | |
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| 2023-06-19 | If \( a=\log _{4} 5 \) and \( b=\log _{5} 6 \), then the value of \( 2 a b-\log _{2} 3 \). | 2:29 | 4 | Vlog |
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| 2023-06-19 | \( \stackrel{\text { solve }}{(-31) \div[(-30)+(-1)]} \) | 1:41 | 2 | |
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| 2023-06-19 | In the given figure \( x: y=3: 2 \) and \( y+z=100^{\circ} \) and \( A B \| C D \), find \( a \) | 4:26 | 10 | |
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| 2023-06-19 | The sum of coefficients of integral Powers of \( x \) in the binomial expansion of \( (1-2 \sqrt... | 5:54 | 9 | |
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| 2023-06-19 | Find each of the following products:
(a) \( 3 \times(-1) \)
(b) \( (-1) \times 225 \)
(c) \( (-2... | 2:10 | 82 | |
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| 2023-06-19 | Prove that inequality: \( (n !)^{2} \leq n^{n} \cdot n !(2 n) \) ! for all positive integer \( n \). | 5:55 | 8 | |
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| 2023-06-19 | Let \( Q \) be the set of rational numbers and \( R \) be a relation on \( Q \) defined by \( \m... | 5:20 | 5 | |
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| 2023-06-19 | Find the value of \( p \) \( (27)^{p}=9 \div 3^{p} \) | 2:01 | 2 | |
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| 2023-06-19 | Find the values of \( a \) and \( b \) so that the function
\[
f(x)=\left[\begin{array}{rr}
x+... | 5:01 | 2 | |
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| 2023-06-19 | \( \alpha=\sin 36^{\circ} \) is a root of which of the following equation
(a) \( 10 x^{4}-10 x^{... | 8:52 | 11 | Let's Play |
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| 2023-06-19 | Differentiation - with respect to \( t \) \[ S=\frac{1}{\sqrt{t}} \] | 1:32 | 11 | |
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| 2023-06-19 | solve for \( (x) \frac{x^{2}-1}{2 x+5}3 \) | 2:55 | 20 | |
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| 2023-06-19 | \( \int_{1}^{e} \frac{1}{x} d x \) | 1:35 | 2 | |
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| 2023-06-19 | Prove that \( { }^{1} P_{1}+2 \cdot{ }^{2} P_{2}+3 \cdot{ }^{3} P_{3}+\cdots \cdot+n \cdot{ }^{n... | 3:22 | 3 | |
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| 2023-06-19 | Find the values of each of the following:
(i) \( |-12|-|-4| \)
(ii) \( |7-9|+|2| \)
(iii) \( |15... | 4:49 | 3 | |
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| 2023-06-19 | \( \frac{\tan (180-\theta) \cos (180-\theta) \tan (90-\theta)}{\sin (90+\theta) \cot (90-\theta)... | 3:52 | 3 | |
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| 2023-06-19 | A metal forms two oxides. The higher oxide contains \( 80 \% \) metal. \( 0.72 \mathrm{~g} \) of... | 5:07 | 6 | |
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| 2023-06-19 | \( y=\frac{4 x}{x-5} \) का \( x \) के सापेक्ष अवकलज ज्ञात कीजिये। | 2:16 | 7 | |
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| 2023-06-19 | दर्शाइए कि कोई भी धनात्मक विषम पूर्णांक \( 6 q+1 \) या \( 6 q+3 \) या \( 6 q+5 \) के रूप का होता... | 6:36 | 11 | |
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| 2023-06-19 | Solve \( \frac{x^{2}-2 x+5}{3 x^{2}-2 x-5}\frac{1}{2} \) | 4:46 | 0 | |
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| 2023-06-19 | The number of parallelograms that can be formed from a set of four parallel lines intersecting a... | 3:01 | 5 | Vlog |
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| 2023-06-19 | Assertion : The minimum value of sec \( x \) is -1 .
Reason: Value of \( 1+\tan ^{2} x \) is \( ... | 3:39 | 6 | |
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