Doubtnut

Doubtnut

Views:
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 200 Counter-Strike: Source Videos With The Most Comments by Doubtnut


Video TitleCommentsCategoryGame
101.The volume of a gas at 0^(@)C and 760 mm pressure is 22.4c c.The no . Of molecules present in th...0Counter-Strike: Source
102.X Y\nis a line parallel to side B C\nof /_\\ A B C. B E || AC\nand C F || A B\nmeet X Y\nin E\na...0Counter-Strike: Source
103.Pd इसके आयतन से 900 गुना हाइड्रोजन अधिशोषित कर सकता है। यह कहलाता है : | 12 | पृष्ठीय रसायन | C...0Counter-Strike: Source
104.An article is sold from jaipur (Rajasthan) to indore (M.P.) for Rs. 5,000 and then from indore t...0Counter-Strike: Source
105.एक विद्युत युक्ति 12 A धारा एवं 120 V D.C. पर कार्य करती है। यदि इसे 250 V तथा 30 Hz AC से जोड़ा...0Counter-Strike: Source
106.Calculate the equilibrium constant of the reaction : Cu(s)+2Ag(aq) hArrCu^(2+)(aq) +2Ag(s) E^(c-...0Counter-Strike: Source
107.There are 3 urns A, B and C. Urn A contains 4 red balls and 3 black balls. Urn B contains 5 red ...0Counter-Strike: Source
108.Consider two charges +q and -q placed at B and C of an equilateral triangle ABC. For this system...0Counter-Strike: Source
109.क्या चोक कुंडली द्वारा दिष्ट धारा (d.c.) को नियंत्रित किया जा सकता है ? कारण दीजिए । | 12 | प्र...0Counter-Strike: Source
110.Can two numbers have 15 as their H.C.F. and 110 as their L.C.M.? Give reason to justify your ans...0Counter-Strike: Source
111.A computer machanic in Delhi charges repairing cost from five different persons A,B,C, D and E w...0Counter-Strike: Source
112.यदि log_(a)9=2,log_(b)8=3 हों, तो log_(a)bहै - | 12 | प्रैक्टिस सेट - 6 | MATHS | AGRAWAL EXAM C...0VlogCounter-Strike: Source
113.2HgCl_2 + SnCl_2- Hg_2Cl_2+ SnCl_4 में असत्य कथन है | 12 | रसायनिक अभिकिर्याएँ एवं उत्प्रेरण | C...0Counter-Strike: Source
114.The K.E. of N molecule of O_(2) is x Joules at -123^(@)C. Another sample of O_(2) at 27^(@)C has...0Counter-Strike: Source
115.Evaluate: c. 4 (5)/(7) xx 3 | 7 | FRACTIONS | MATHS | ICSE | Doubtnut0Counter-Strike: Source
116.क्या होता है जब? बेन्जल्डिहाइड की क्रिया सेमीकार्बेजाइड से कराते हैं? | 12 | क्या होता है जब | C...0Counter-Strike: Source
117.The H.C.F. and L.C.M. of two numbers are 13 and\r\n1989 respectively. If one of the numbers is 1...0Counter-Strike: Source
118.At Srinagar temperature was -5^@ C on Monday and then it dropped by 2^@ C on Tuesday. What was t...0Counter-Strike: Source
119.The following results are obtained in several dihybrid test crosses in an organism considering t...0Counter-Strike: Source
120.Match Column - I with Column - II. {:(,Column - I,,Column - II),((A),NaCl(C.N. of Na^(+)),(p),4)...0Counter-Strike: Source
121.In each of the following figure. O is the centre of the circle. Find the values of a,b and c. | ...0Counter-Strike: Source
122.एक पदार्थ का कार्यफलन 3.3ev है तो इसकी देहली आवृत्ति होगी | 12 | सॉल्वड पेपर 2015 | PHYSICS | C...0Counter-Strike: Source
123.निम्न में से कौन सा यौगिक अपचयन पर प्राथमिक एल्कोहल नहीं देता है | 12 | एल्डिहाइड एवं कीटोन | C...0Counter-Strike: Source
124.दो धातुओं के नाम बताएँ जो अम्ल और क्षार से अभिक्रिया कर H_2 गैस देती हैं। | 10 | प्रायोगिकी | C...0Counter-Strike: Source
125.Delta H = Delta E + Delta nRT में Delta n का मान कभीशून्य नहीं होता है। | 11 | उष्मागतिकी | C...0Counter-Strike: Source
126.In Fig.\r\n4.125, F E C~= G B D\nand /_1=/_2\n. Prove\r\nthat A D E A B C\n. (FIGURE) | 10 | T...0Counter-Strike: Source
127.डिहाइड्रो हैलोजनीकरणके लिये हैलाइडों की क्रियाशीलताका क्रमहै | 12 | हैलोएल्केन तथा हैलोऐरीन | C...0Counter-Strike: Source
128.C.G.S. पदतिमें आवेश का मात्रक क्या होता है? | 12 | विधुत क्षेत्र | PHYSICS | SANJEEV PUBLICATIO...0Counter-Strike: Source
129.In the following diagram, write down :the co-ordinates of the points A, B and C. | 10 | EQUATIO...0Counter-Strike: Source
130.निम्नलिखित अभिक्रियाओं को अपचयोपचय अभिक्रियाओं के रूप में औचित्य स्थापित करने का प्रयास करें - C...0Counter-Strike: Source
131.परिशोधित स्प्रिट से परिशुद्ध एल्कोहल प्राप्त करने की विधि है | 12 | एल्कोहल , फिनॉल एवं ईथर | C...0Counter-Strike: Source
132.निम्नलिखित के I.U.P.A.C. नाम बताइए। a. underset(CH_(2)-COOH)underset(|)(CH_(2))-COOH b. CH_(3)-u...0Counter-Strike: Source
133.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
134.डाइबोरेन अणु में दो बोरॉन परमाणुओं को जोड़ने वाले आबन्ध का नाम लिखिए। | 11 | p-ब्लॉक तत्त्व | C...0Counter-Strike: Source
135.I.C.SH हॉर्मोन किस पर क्रिया करता है? | 12 | CHEMICAL CO-ORDINATION AND INTEGRATION (ENDOCRINE...0Counter-Strike: Source
136.A 5.0 litres cylinder contained 10 moles of hydrogen gas at 27°C. Due to leakage, entire gas es...0Counter-Strike: Source
137.बिंदु P(1,2,3) से तल 2x-y+z+3=0 पर डाले गए लम्ब का पाद है | 12 | त्रिविमीय ज्यामिति | MATHS | C...0Counter-Strike: Source
138.The density of a gas is found to be 1.56 g L^(-1) at 745 mm pressure and 60^(@)C. Calculate the ...0Counter-Strike: Source
139.A (-3, 4), B (3, -1) and C (-2, 4) are the vertices of a triangle ABC. Find the length of line ...0Counter-Strike: Source
140.By selling a bicycle for Rs. 5670 a trader gains Rs. 270. Find his gain per cent. [Hint: C.P. = ...0Counter-Strike: Source
141.अभिक्रियाओं के लिए A harr B, K_(C) = 2, B harr C , K_(C) = 4, C harr D , K_(C) = 6 तो A harr D क...0Counter-Strike: Source
142.गुरुत्वीय त्वरण g का परिमाप पृथ्वी की सतह पर- | 12 | प्रैक्टिस सेट -3 | PHYSICS | AGRAWAL EXAM C...0Counter-Strike: Source
143.Find the H.C.F. of the given numbers by prime factorisation method: (i) 28, 46 (ii) 25, 65 (...0Counter-Strike: Source
144.Compound (A) has molecular formula C_(5)H_(12)O. It liberates H_(2) gas on reaction with Na-Metl...0Counter-Strike: Source
145.सोडियम निष्कर्षण की कास्टनर विधि में ऐनोड किस धातु का बना होता है | 12 | S -ब्लॉक के तत्व | C...0Counter-Strike: Source
146.एक C.S.L. सूर्य के द्रव्यमान का कितना गुना है? | 11 | मात्रक एवं मापन | PHYSICS | SANJEEV PUBLI...0Counter-Strike: Source
147.Heavy radioactive nucleus decay through alpha-decay also. Consider a radioactive nucleus x. It s...0Let's PlayCounter-Strike: Source
148.A wall has two layers A and B, each made of different materials. Both the layers have the same t...0Counter-Strike: Source
149.Ina triangle ABC , AB = AC and angle A = 36^(@) If the internalbisectorof angle C meets AB at D...0Counter-Strike: Source
150.जल-संवर्धन तकनीक की मुख्य हानियाँ इनमें से हैं A. मँहगी व्यवस्था B.उच्च तकनीकी ज्ञान C. जल संरक्...0Counter-Strike: Source
151.अभिक्रिया के समय एन्जाइम से जुड़ने वाला सहकारक समूह कहलाता है | 12 | BIOMOLECULES, POLYMER AND C...0Counter-Strike: Source
152.Let R be a relation over the set NxxN and it is defined by (a,b)R(c,d)impliesa+d=b+c. Then R is ...0Counter-Strike: Source
153.क्षारीय मृदा धातुओं के गलनांक क्षार धातुओं से अधिक होते हैं, क्यों ? | 12 | S-ब्लॉक के तत्व | C...0Counter-Strike: Source
154.दी गई तालिका में से A, B एवं C को सही दर्शाते हुए विकल्प की पहचान कीजिए।A. A-द्वितीयक उपभोक्ता, ...0Counter-Strike: Source
155.LetA (4, 2), B(6, 5) and C(1, 4) be the vertices of Delta A B C. (i) The median from A meets BC...0Counter-Strike: Source
156.Distinguish: Slag and flux | 12 | GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS | C...0Counter-Strike: Source
157.1 Kg of ice at -20^(@)C is mixed with 2 Kg of water at 90^(@)C. Assuming that there is no loss o...0Counter-Strike: Source
158.डाइसैकेराइड क्या हैं ? इनके प्रकार तथा किसी एक के रासायनिक परीक्षण भी लिखिए | | 12 | जैव अणु | C...0Counter-Strike: Source
159.Calculate the K.E. per mole of oxygen at 27^(@)C. Given N = 6.02 xx 10^(23), k = 1.38 xx 10^(-23...0Counter-Strike: Source
160.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
161.A (1, 4), B (3, 2) and C (7,5) are vertices of a triangle ABC. Find : the equation of a line, th...0Counter-Strike: Source
162.Prove that a^2+b^2+c^2-a b-b c-c a\nis always non-negative for all values of a ,b a nd c. | 9 | ...0Counter-Strike: Source
163.1L of NH_(3) at 27^(@)C is expanded adiabatically to x litres and final temperature is -123^(@)C...0Counter-Strike: Source
164.{:(LIST - 1,LIST-2),(A) Colloidal,1) Liquid or solid or gas),(B) Crystalloid,2) 1m mu-1mu),(C) T...0Counter-Strike: Source
165.Observe the given diagram . Identify the label A, B and C. | 12 | NTA NEET SET 30 | BIOLOGY | NT...0VlogCounter-Strike: Source
166.An ideal gas heat engine operates in a Carnot cycle between 227^(@)C and 127^(@)C. It absorbs 6K...0Counter-Strike: Source
167.Wood spirit is obtained by catalytic reaction of water gas with hydrogen at 200-300^(@)C. The ca...0Counter-Strike: Source
168.क्यूप्रस आयन रंगहीन है, जबकि क्यूप्रिक आयन रंगीन है क्योंकि | 12 | D एवं F - ब्लॉक के तत्व | C...0Counter-Strike: Source
169.Which of the following is completely absorbed in P.C.T. ? | 12 | HUMAN PHYSIOLOGY -I | BIOLOGY |...0VlogCounter-Strike: Source
170.क्या दी-ब्रोगली समीकरण के आधार पर पृथ्वी को एक तरंग माना जाना चाहिए ? | 11 | परमाणु संरचना | C...0Counter-Strike: Source
171.In which pair the first atom or ion is not larger than the second :- | 12 | Periodic Table | C...0Counter-Strike: Source
172.An ammeter A of finite resistance, and a resistor R are joined in series to an ideal cell C. A p...0Counter-Strike: Source
173.In a triangle A B C ,\nif 2/_A=3/_B=6/_C ,\ndetermine /_A ,/_B\nand /_C. | 9 | CONGRUENT TRIANGL...0Counter-Strike: Source
174.फलन tका सेल्सियसतापमानका फारेनहाइटतापमान में प्रतिचित्रणइस प्रकारपरिभाषितहै , t(C)=(9C)/(5)+32तो...0Counter-Strike: Source
175.जलीय कॉपर सल्फेट के विद्युत अपघअन में एनोड एवं कैथोड पर उत्पन्न गैस हैं | 12 | विद्युत रसायन | C...0Counter-Strike: Source
176.ऐल्कोहॉल से आप निम्न को किस प्रकार बनायएगे ? ,(ii) फ्लुओरोएथेन , | 12 | हैलोजेन व्युत्पन्न | C...0Counter-Strike: Source
177.In the setup shown, fird acceleration of the block C. | 12 | NEWTON'S LAWS OF MOTION & FRICTION...0ShowCounter-Strike: Source
178.The latent heat of fusion of ice is 80 calories per gram at 0^(@)C. What is the freezing point o...0Counter-Strike: Source
179.Imagine a system, that can keep the room temperature within a narrow range between 20^@C to 25^@...0Counter-Strike: Source
180.A B C D\nis a cyclic\nquadrilateral in which:\nB C is para l l e l t o A D ,\\ /_A D C=110^0\\ a...0Counter-Strike: Source
181.Delta ABC is right-angled at C. If AC = 5 cm and BC = 12 cm find the length of AB. | 7 | THE TRI...0Counter-Strike: Source
182.सामान्य सूत्र जो ऐल्केनॉल के सजातीय समूह को प्रदर्शित करता है, वह है - | 12 | मॉडल पेपर 2022 | C...0Counter-Strike: Source
183.Classify the following reactions into- a. Direction combination b. Decomposition c. Displacement...0Counter-Strike: Source
184.Let a^((log)_b x)=c\\ w h e r e\\ a ,\\ b ,\\ c\\ &\\ x\\ \nare\nparameters.\nOn the basis of ab...0VlogCounter-Strike: Source
185.How many meiotic divisions are required to produce 200 pollen grains ? (a) 40 \n\n(b) 50 \n\n(c)...0Counter-Strike: Source
186.अयस्क के सान्द्रण से आप क्या समझते हैं। | 12 | तत्वों के निष्कर्षण के सिद्धान्त एवं प्रक्रम | C...0Counter-Strike: Source
187.परासरण दाब (prod), आयतन (V) व ताप (T) के लिए निम्न में से कौन-सा कथन असत्य है ? | 12 | विलयन | C...0Counter-Strike: Source
188.For a gaseous reaction A(g) + 3 B(g) rightarrow 3C(g) + 3D(g) Delta E is 27 kcal at 37^(@)C. Ass...0Counter-Strike: Source
189.अमोनिया का क्वथनांक फॉस्फीन के क्वथनांक से अत्यधिक होता है, क्योंकि- | 12 | P- ब्लॉक के तत्व | C...0Counter-Strike: Source
190.Water has maximum density at 4°C. | 8 | WATER | CHEMISTRY | ICSE | Doubtnut0Counter-Strike: Source
191.What is the order of basic nature of hydrides of VA group elements? | 12 | VA GROUP ELEMENTS | C...0Counter-Strike: Source
192.Ph-underset(O)underset(||)(C)-CH_(3)overset(NaOCl)(to)A+ salt A+CH_(3)-underset(O)underset(||)(C...0Counter-Strike: Source
193.A 10.0 L container is filled with a gas to a pressure of 2.00 atm at 0^(@)C. At what temperature...0Counter-Strike: Source
194.50 g ice at 0^(@)C is dropped into a calorimeter containing 100 g water at 30^(@)C. If thermal ....0Counter-Strike: Source
195.Consider 3 identical balls, each having mass of 0.1 kg. The ball A has an initial velocity of 10...0Counter-Strike: Source
196.Fossils that represent a hominid who walked erect and had a cranial capacity around 900 c.c | 12...0Counter-Strike: Source
197.In the diagram given below angleEDC. The tangent drawn to the circle at C makes an angle of 50^(...0Counter-Strike: Source
198.जब अमोनियम क्लोराइड को अमोनियम हाइड्रॉक्साइड के विलयन में मिलाते हैं, तो | 11 | साम्यावस्था | C...0Counter-Strike: Source
199.If a,b and c are in A.P. and also in G.P., show that : a=b=c. | 10 | GEOMETRIC PROGRESSION | M...0ShowCounter-Strike: Source
200.Oxygen boils at -183^(@)C. This temperature is approximately | 12 | NTA NEET SET 36 | PHYSICS | ...0Counter-Strike: Source