Doubtnut

Doubtnut

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17,330,221
Subscribers:
3,910,000
Videos:
60,308
Duration:
174:13:37:23
India
India

Doubtnut is an Indian YouTube channel which has over 3.91 million subscribers, publishing around 60.31 thousand videos which altogether total more than 17.33 million views.

Created on ● Channel Link: https://www.youtube.com/channel/UCcv7pspGHmM7AOywuLM1ufA



Top 100 Counter-Strike: Source Videos With The Most Comments by Doubtnut


Video TitleCommentsCategoryGame
1.If A. B and C are three points on aline, and B lies between A and C then prove that A B+B C=A C....7Counter-Strike: Source
2.D and E are points on the sides CA and CB respectively of a triangleABC right angled at C. Prove...6Counter-Strike: Source
3.Find the H.C.F. and L.C.M. of the following\npairs of numbers:\n(i) 117, 221 (ii) 234, 572\n(iii...4Counter-Strike: Source
4.Find the L.C.M. of 40, 36, and 126 by prime\r\nfactorization method. | 6 | PLAYING WITH NUMBERS ...3Counter-Strike: Source
5.On a graph paper, plot the triangle ABC, whose vertices areat the points A (3,1) , B (5,0) and C...3Counter-Strike: Source
6.At what rate percent per annum C.I will Rs 2,000 amount to Rs 2,315.25 in 3 years ? | 9 | COMPOU...3Counter-Strike: Source
7.The difference between C.I. and S.I. on Rs 7,500 for two years is Rs 12 at the same rate of inte...3Counter-Strike: Source
8.कॉपर जिंक को उसके लवण के विलयन से विस्थापित नहीं कर सकता क्यों ? | 8 | पदार्थ धातु और अधातु | C...2Counter-Strike: Source
9.Determine the L.C.M. of the numbers given\nbelow:\n28, 36, 45, 60 | 6 | PLAYING WITH NUMBERS | M...2Counter-Strike: Source
10.Sulphur dioxide turns acidified potassium dichromate ............... . | 10 | SULPHURIC ACID | C...2Let's PlayCounter-Strike: Source
11.The H.C.F. and L.C.M. of two numbers are 9 and 270 respectively. If one of the numbers is 45, fi...2Counter-Strike: Source
12.Verify that a -: (b+c) != (a -: b) +(a -: c) for each of the following values of a, b and c.,(a)...2Counter-Strike: Source
13.Find the H.C.F. of the following numbers using\nprime factorization method:\n150, 140, 210 \n | ...2Counter-Strike: Source
14.Find the L.C.M. of the given numbers by division method: (i) 12, 32 (ii) 480, 672 (iii) 6, 8...2Counter-Strike: Source
15.The difference between the C.I and the S.I on Rs 8,400 for two years is Rs 21 at the same rate o...2Counter-Strike: Source
16.In Figure, P Q || A B\\ a n d\\ P R\\ || B C\n. If /_Q P R=102^0\n, determine /_A B C.\nGive rea...2Counter-Strike: Source
17.How much percent more than the C.P. should a manufacture mark his goods so that after allowing a...2Counter-Strike: Source
18.ABC is an isosceles triangle inwhich A B =A C. AD bisects exterior angle PAC and C D ||A B. Show...2ShowCounter-Strike: Source
19.In a bolt factory three machines A ,B and C manufacture 25% , 35% and 40% of the total productio...2Counter-Strike: Source
20.In Figure, O P\nbisects /_B O C\\ a n d\\ O Q \\ bisects \\ /_A O C.\nShow that /_P O Q=90^0 | 9...1ShowCounter-Strike: Source
21.If in two\r\ntriangles A B C\nand D E F\n, (A B)/(D E)=(B C)/(F E)=(C A)/(F D)\n, then\n F D E C...1Counter-Strike: Source
22.Find the H.C.F. of 180 and 336. Hence, find their L.C.M. | 6 | FACTORS AND MULTIPLES | MATHS | I...1Counter-Strike: Source
23.The freezing point of a solution containing 5.85 gof NaCl in 100 8 of water is -3.348^(@)C. Calc...1Counter-Strike: Source
24.A B C D\nis a parallelogram, if the two diagonals are\nequal, find the measure of /_A B C. | 9 |...1VlogCounter-Strike: Source
25.To find sum of three numbers 14, 27 and 13, we can have two ways: (a) We may first add 14 and 27...1Counter-Strike: Source
26.Suppose line segments A B\\ a n d\\ C D\nintersect at O\nin such a way that A O=O D\\ a n d\\ O ...1Counter-Strike: Source
27.Boron has two isotopes, B-10 and B-11. The average atomic mass of boron is found to be 10.80u. C...1Counter-Strike: Source
28.A point charge of 0.009 mu C is placed at origin. Calculate intensity of electric field due to t...1Counter-Strike: Source
29.Find the H.C.F. of 624, 936 and 264 | 6 | PLAYING WITH NUMBERS | MATHS | RD SHARMA ENGLISH | Dou...1Counter-Strike: Source
30.फलक केंद्रित घनीय (f.c.c) सेल कैसे बनता है? इसके यूनिट सेल में परमाणुओं की संख्या ज्ञात कीजिए| ...1Counter-Strike: Source
31.P and Q are points on the sides C A and C B\nrespectively of A B C, right-angled at C. Provetha...1Counter-Strike: Source
32.100 c.c of N/10 NaOH solution is mixed with 100 c.c of N/5 HCI solution and the whole volume is ...1Counter-Strike: Source
33.The vertices of a DeltaABC are A(3, 8), B(-1, 2) and C(6, 6). Find :(i) Slope of BC.(ii) Equatio...1Counter-Strike: Source
34.बहते रक्त पर FeCl_(2) अथवा फिटकरी लगाने से उसका बहाव रुक जाता है, क्यों? | 12 | पृष्ठ रसायन | C...1Counter-Strike: Source
35.A person sells an article for Rs 550, gaining 1/(10)\nof its C.P. Find gain percent. | 8 | PROFI...1Counter-Strike: Source
36.500g of ice at 0°C is mixed with 1g steam at 100°C. The final temperature of the mixture is | 1...1Counter-Strike: Source
37.A sum of money is invested at C.I. payable annually. The amounts of interest in two successive y...1Counter-Strike: Source
38.ईंधन सेल का एक उदाहरण लिखिए। इसकी दो विशेषताएं भी लिखिए। | 12 | QUESTION PAPER 2011 PART 1 | C...1Counter-Strike: Source
39.A B C D\nis a parallelogram. A B\nis produced to E\nso that B E=A B\n. Prove that E D\nbisects B...1VlogCounter-Strike: Source
40.उत्प्रेरक विष तथा उत्प्रेरक वर्धक में क्या अन्तर है? उदाहरण सहित समझाइए। | 12 | पृष्ठ रसायन | C...1Counter-Strike: Source
41.Calculate the profit or\nloss and profit or loss percent in each of the following cases:\n (i) C...1Counter-Strike: Source
42.Find the percentage of calcium in calcium carbonate (CaCO_(3)). | 12 | SOME BASIC CONCEPTS OF C...1Counter-Strike: Source
43.Find the H.C.F. of the following numbers using\nprime factorization method:\n225, 450 | 6 | PLA...1Counter-Strike: Source
44.Find the H.C.F. of the given numbers by division method: ltbr 84, 120, 156 | 6 | FACTORS AND MUL...1Counter-Strike: Source
45.What is the percent by mass of iodine needed to reduce the freezing point of benzene to 3.5^(@)C...1Counter-Strike: Source
46.int1/(1+sqrt(x))dx\nis equal to\na. 2sqrt(x)+2ln|1+sqrt(x)|+c\n\nb. 2sqrt(x)-2ln|1+sqrt(x)|+c\n\...0Counter-Strike: Source
47.Pd इसके आयतन से 900 गुना हाइड्रोजन अधिशोषित कर सकता है। यह कहलाता है : | 12 | पृष्ठीय रसायन | C...0Counter-Strike: Source
48.In the given figure, an ideal gas changes its state from state state C by two paths ABC and AC. ...0Counter-Strike: Source
49.यदि A+B+C=pi हो तो सिद्ध कीजिए कि sin2A+sin2B-sin2C=4cosAcosBsinC. | 12 | त्रिकोणमितीय सर्वसमिक...0Counter-Strike: Source
50.निम्नलिखित अभिक्रियाओं को अपचयोपचय अभिक्रियाओं के रूप में औचित्य स्थापित करने का प्रयास करें - C...0Counter-Strike: Source
51.The Bond energy of C=C, C-C, C-H and H-H are 147, 83, 99 and 104 kcal/mol respectively then calc...0Counter-Strike: Source
52.Given that the H.C.F. of two numbers is 16 and\r\ntheir product is 6400, determine their L.C.M. ...0Counter-Strike: Source
53.क्या चोक कुंडली द्वारा दिष्ट धारा (d.c.) को नियंत्रित किया जा सकता है ? कारण दीजिए । | 12 | प्र...0Counter-Strike: Source
54.D and E arepoints on sides AB and AC respectively ofDelta A B C such that a r\\ (D B C)\\ =\\ a ...0Counter-Strike: Source
55.निम्नलिखित में से किसे मानव निर्मित रेशे भी कहा जाता है? | 8 | Synthetic fibres and Plastics | C...0Counter-Strike: Source
56.A 5.0 litres cylinder contained 10 moles of hydrogen gas at 27°C. Due to leakage, entire gas es...0Counter-Strike: Source
57............ electrodes are used during electrolysis of acidulated water. | 10 | ELECTROLYSIS | C...0Counter-Strike: Source
58.Find the H.C.F. of the following numbers using\nprime factorization method:\n144, 198 | 6 | PLA...0Counter-Strike: Source
59.Evaluate: c. 4 (5)/(7) xx 3 | 7 | FRACTIONS | MATHS | ICSE | Doubtnut0Counter-Strike: Source
60.किसी धातु (परमाणु भार= 60) की क्रिस्टल संरचना f.c.c.एवं यूनिट सेल की कोर लम्बाई400pm हो, तो उसके...0Counter-Strike: Source
61.माना A,B,C युग्मतः स्वतंत्र घटनाएं हैं जहां P(C)gt0 है तथा P(AnnBnnC)=0 तो (A^(c)nnB^(c)|C) बराब...0Counter-Strike: Source
62.गुरुत्वीय त्वरण g का परिमाप पृथ्वी की सतह पर- | 12 | प्रैक्टिस सेट -3 | PHYSICS | AGRAWAL EXAM C...0Counter-Strike: Source
63.चुंबकीय क्षेत्र का C.G .S मात्रक क्या होता है ? | 12 | गतिमान आवेश और चुम्बकत्व | PHYSICS | LECT...0Counter-Strike: Source
64.एक विधुत धारा में D.C. तथा A.C. दोनों घटक है | 8A का D.C. घटक तथा A.C. घटक I=6sinwtA द्वारा दर्श...0Counter-Strike: Source
65.In each of the following figure. O is the centre of the circle. Find the values of a,b and c. | ...0Counter-Strike: Source
66.The length of a metallic sheet is measured as 10.0 cm using a metre scale of L.C. 0.1cm and its ...0Counter-Strike: Source
67.Construct a kit A B C D\nin which A B=4c m ,\\ B C=4. 9 c m\\ a n d\\ A C=7. 2 c mdot | 8 | PRAC...0Counter-Strike: Source
68.A wall has two layers A and B, each made of different materials. Both the layers have the same t...0Counter-Strike: Source
69.5 mole of oxygen are heated at constant volume from 10^(@)C to 20^(@)C. What will be the change ...0Counter-Strike: Source
70.If int(x+1)/(x^2+x+3)dx=a ln|x^2+x+3|+1/(sqrt(b))tan^(-1)((c x+d)/(sqrt(11)))+k ,\nthen the valu...0Counter-Strike: Source
71.डिहाइड्रो हैलोजनीकरणके लिये हैलाइडों की क्रियाशीलताका क्रमहै | 12 | हैलोएल्केन तथा हैलोऐरीन | C...0Counter-Strike: Source
72.Find: c. 3 (4)/(5) xx (35)/( 38) | 7 | FRACTIONS | MATHS | ICSE | Doubtnut0Counter-Strike: Source
73.CH_(3)-Br+NaO-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)to ? ltBrgt The produc...0Counter-Strike: Source
74.दी गई तालिका में से A, B एवं C को सही दर्शाते हुए विकल्प की पहचान कीजिए।A. A-द्वितीयक उपभोक्ता, ...0Counter-Strike: Source
75.A substance is in the solid from at 0^(@)C. The amount of heat added to this substance and its t...0Counter-Strike: Source
76.Find the H.C.F. of 1260 and 2376 by prime\r\nfactorization method. | 6 | PLAYING WITH NUMBERS | ...0Counter-Strike: Source
77.निम्नलिखित के IUPAC नाम लिखिए(i) CH_(3)CONH_(2) (ii) (CH_(3))_(2) CHCH_(2) COCl (iii) CH_(3)-O-C...0Counter-Strike: Source
78.A (4,2), B(6,8) and C (8,4) are the vertices of a triangle ABC. Write down the equation of the m...0Counter-Strike: Source
79.Find out the incorrect statements :(A.) PPLO is a prokaryotic cell . (B.) W.B.C . Shows amoeboid...0ShowCounter-Strike: Source
80.If the points A (2,9), B (a,5) and C (5,5) are the verticesof a triangleABC. Right-angled at B, ...0Counter-Strike: Source
81.Write the successors of a. 2350700 b. 32100909 c. 89999 | 6 | WHOLE NUMBERS | MATHS | ICSE | Dou...0Counter-Strike: Source
82.The number of ordered pair (x ,\\ y)\nsatisfying correspondence C_1\nis\n1\nb. 2\nc. 3\nd. 4 | 1...0Counter-Strike: Source
83.फीनॉल की क्लोरोफॉर्म तथा KOH से क्रिया का रासायनिक समीकरण लिखिए। | 12 | QUESTION PAPER 2018 | C...0Counter-Strike: Source
84.The time variations of signals are given as in A,B and C. Point out the true statement from the ...0Counter-Strike: Source
85.A, B, C are points in a vertical line such that AB = BC. If a body falls freely from rest at A a...0Counter-Strike: Source
86.An ideal gas heat engine operates in a Carnot cycle between 227^(@)C and 127^(@)C. It absorbs 6K...0Counter-Strike: Source
87.H- परमाणु के द्वितीय कोश में इलेक्ट्रॉन के परिक्रमण का वेग ज्ञात कीजिए? | 12 | परमाणु संरचना | C...0Counter-Strike: Source
88.D (+) Glucose has melting point 146^@C and specific rotation [alpha]_(D)^(25) is + 112^@C. Anoth...0Let's PlayCounter-Strike: Source
89.A semicircular lamina of mass m and radius r and centre C. Its center of mass is at a distance x...0Counter-Strike: Source
90.Calculate the vapour pressure of solution having 3.42g cane sugar in 180 g water at 40^(@)C and ...0Counter-Strike: Source
91.ग्लूकोस किन अवस्थाओं में ग्लूकोनिक और सैकैरिक अम्ल में परिवर्तित हो जाता है? | 12 | जैव अणु | C...0Counter-Strike: Source
92.An ammeter A of finite resistance, and a resistor R are joined in series to an ideal cell C. A p...0Counter-Strike: Source
93.निम्न में से कौनसी संरचना उचित अनुनाद के रुप में नहीं होती है | 12 | सामान्य कार्बनिक रसायन | C...0Counter-Strike: Source
94.The normal temperature of human body is 37^@C. What will be its value on the Kelvin scale ? | 7 ...0Counter-Strike: Source
95.उदासीनीकरण क्रिया से क्या अभिप्राय है? इसे प्रयोग द्वारा समझाएँ । | 7 | अम्ल , क्षारक और लवण | C...0Counter-Strike: Source
96.In Figure,\nIf /_A B C=45^0,\nthen /_A O C=\n\n(a) 45^0\n(b) 60^0\n(c) 75^0\n(d) 90^0 | 9 | CIRC...0Counter-Strike: Source
97.A gas is filled in a container of volume V at 121^@ C. To what temperature should it be heated i...0Counter-Strike: Source
98.The latent heat of fusion of ice is 80 calories per gram at 0^(@)C. What is the freezing point o...0Counter-Strike: Source
99.NO_(2)^(-) की आकृति व N की संकरण अवस्था क्या होगी? | 11 | रासायनिक आबन्धन तथा आण्विक संरचना | C...0Counter-Strike: Source
100.A B C D\nis a parallelogram. If A B\nis produced to E\nsuch that B E=A B\n. Prove that E D\nbise...0VlogCounter-Strike: Source