Courses

# Class 11

Mansi Gupta asked   •  2 minutes ago

## Evaluate integrate tan {ln(x √1 x^2)/√1 x^2}dx?

Imon Bannerjee asked   •  6 minutes ago

## Prove that the equation of the cord joining the points (x1,y1) & (x2,y2) lying on the parabola y^2=4ax is (y-y1)(y-y2)=y^2-4ax?

Alex Man asked   •  9 minutes ago

## How the effect of competitive inhibitors can be nullified ?a)By increasing concentration of substrateb)By decreasing concentration of substratec)By increasing concentration of enzymed)By decreasing concentration of enzymeCorrect answer is option 'A'. Can you explain this answer?

Prachika Thakur asked   •  22 minutes ago

## Find the two line of regression in the following data: X=42,44,58,55,89,98,67 Y=56,49,53,58,65,76,58?

Manisha.k asked   •  26 minutes ago

## Magna form of Entamoeba inhibits in-a)Duodenumb)Iliumc)Stomachd)ColonCorrect answer is option 'D'. Can you explain this answer?

Dikshant asked   •  32 minutes ago

## A sattelite of mass 1000kg moves in circular orbit of radius 7000km around earth calculate total energy required to place sattelite in orbit from earth's surface?

Rishi Kesh asked   •  37 minutes ago

## A sphere of radius r has a electric charge uniformly distributed in its entire volume. At a distance d from the center inside the sphere (d... more?

Talwinder Kaur asked   •  39 minutes ago

## Each leaf of Cycas is supplied by :a)Two direct traces and two girdle tracesb)A number of direct traces and two girdle tracesc)A number of direct traces and a number of girdle tracesd)Two direct traces and a number of girdle tracesCorrect answer is option 'A'. Can you explain this answer?

Sujata Tanwar asked   •  40 minutes ago

## Passage IIHeat of combustion of sucrose under standard state is - 5640 kJ mol-1. A healthy person takes 20 breaths per minute, and each breath consumer 480 mL of air. Inhaled and exhaled air contains 20% and 15% of oxygen by volume. Q. If oxygen retained in the body is used in the combustion of sucrose, number of moles of sucrose combusted per day isa)2.3542 molb)4.7084 molc)1.1771 mold)1.2792 molCorrect answer is option 'A'. Can you explain this answer?

Shreya Gupta asked   •  50 minutes ago

## Range of f(X)= 1/√x^2-1?

Nanggoi Pertin Pertin asked   •  1 hour ago

## There are 1440 employees in a certain company. Of all the employees, one in three is a woman and one in twelve is a married woman. One in a six of the man is a married man. Tabulate the above data in complete figures?

Sujata Tanwar asked   •  1 hour ago

## Direction (Q. Nos. 16) Choice the correct combination of elements and column I and coloumn II  are given as option (a), (b), (c) and (d), out of which ONE option is correct.Q. Thermodynamic equilibrium constant K is related to temperature by equation log10   a)ab)bc)cd)dCorrect answer is option 'A'. Can you explain this answer?

Pravthi Bawankule asked   •  1 hour ago

## The area bounded between the curves from you y=e*cosx and y =e*sinx from x=3.14/4 to x=3.14/2?

Prashant Meena asked   •  1 hour ago

## Heat charge at constant pressure and volume when 128gm o2 gas is heated to rise temperature from 0 to 100 c?

Syeda Binti Farooq asked   •  1 hour ago

## The angular displacement of the particle is given as 3t raised power 4-3t square 7t 6.Find the angular velocity and the angular acceleration at t=2s.?

Veerraju Annamdevula asked   •  1 hour ago

## If P(x,y) is a point in the plane then sine ratio is y/distance from origin what if the point is origin?Then sine=?

Devanshu Sahni asked   •  1 hour ago

## Consider the following reaction.The correct statement(s) is/area)X is a tertiary bromideb)c)d)Z is formed through heterogeneous catalysis reactionCorrect answer is option 'B,C,D'. Can you explain this answer?

divya patel asked   •  1 hour ago

## Secretion of sebaceous glands is -a)Oilyb)Wateryc)Creamyd)MucoidCorrect answer is option 'A'. Can you explain this answer?

Mohd Haroon Haroon asked   •  2 hours ago

## The length of seconds pendulum on the surface of earth is 1m. The length of same pendulum on surface of moon, where acceleration due to gravity is 1/6th of the g on the surface of earth is?

Kasoju Praveena asked   •  2 hours ago

## The number of one one functions that can be defined from A (1,2,3) B (a,e,I,o,u)?

Sam Evan asked   •  2 hours ago

## A rope held horizontally between 2 fixed ends such that a weight is attached at the middle of the rope. Calculate what force is required to make the rope horizontal again?

Sujata Tanwar asked   •  2 hours ago

## Direction (Q. No. 9) This sectionis based on statement I and Statement II. Select the correct answer from the code given below.Q. Statement I :Every endothermic reaction is spontaneous if TΔS > ΔH.Statement II : Sign of ΔG is the true criterion for deciding spontaneity of a reaction.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'B'. Can you explain this answer?

Raja Khan Rana asked   •  2 hours ago

## A compound X (C5HgBr) is optically active. X on treatment with KOH in ethanol gives Y (C5H8) as major product. Ozonolysis of Y followed by Zn-hydrolysis gives Z (C5H8O2) . Z forms yellow precipitate with NaO H/l2 as well as it reduces Tollen’s reagent. Z on treatment with Zn (Hg)/HCI gives pentane. The correct statement(s) regarding X, Y and Z is/area) is 1-bromp-1ynethyl cyclobutaneb)X is 1-bromo-2-imethyl cyclobutanec)Y is a chiral hydrocarbond)Z is an oxoaldebydeCorrect answer is option 'B,D'. Can you explain this answer?

Maithili Kurane asked   •  2 hours ago

## 10 gram of ice at -20 degree Celsius is added to 10 grams of water at 50 degree Celsius. The amount of ice and water that are present at equilibrium respectively ?

Devanshu Sahni asked   •  2 hours ago

## Statement I : Boiling point of an alkene is slightly greater than that of its hydrogenated alkane.Statement II : Alkenes have stronger van der Waals’ force of attraction than alkanes.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'C'. Can you explain this answer?

Misbah Shabir Shabir asked   •  2 hours ago

## A compound possesses 8%sulphur by mass. The least molecular mass is?

Seema Munjal asked   •  3 hours ago

## meaning of transcending Related: Summary: The Ailing Planet (Hindi)?

Kumari Manisha asked   •  3 hours ago

## IIn the fig shown, the friction coefficient between the block of mass 1kg and the plank of mass 2kg is 0.4 while that between the plank floor is 0.1. A constant force F starts acting horizontally on the upper 1kg block. The... more

Vikas Bidhuri asked   •  3 hours ago

## Friedel Crafts reaction of benzene with ethylene in presence of HCl and anhyd. AlCl3 gives:a)Styreneb)Stilbenec)Ethylbenzened)1,1-DiphenylethyleneCorrect answer is option 'C'. Can you explain this answer?

Sujata Tanwar asked   •  3 hours ago

## Passage IOctane (C8H18), a primary constituent of gasoline, burns in airA 1.00 g sample of octane is burned in a constant volume calorimeter containing 1.20 kg of water. The temperature of water and the bomb rises by 8.2 K. The heat capacity of the bomb is 837.0 JK-1. Molar heat capacity of water is 4.184 J g-1 K-1. Initial temperature is 298 K. Q. ΔCH° (per mol of C8H18) isa)-5487.0 kJb)+5487.0 kJc)-59.18 kJd)+59.18 kJCorrect answer is option 'A'. Can you explain this answer?

Mahesh Singh asked   •  3 hours ago

## Two particles of equal mass go around a circle of radiusR under the action of their mutual gravitationalattraction. The speed of each particle isa)b)c)d)Correct answer is 'C'. Can you explain this answer?

Raja Khan Rana asked   •  3 hours ago

## What is major product in the following reaction?a)b)c)d)Correct answer is option 'B'. Can you explain this answer?

Harneet Kaur asked   •  3 hours ago

## Mno4_ ions are reduced in acidic conditions to Mn2+ ions where they are reduced in neutral conditions to Mno2.the oxidation of 25ml of a solution x containing fe2.+.ions Required in acidic conditions 20 ml of of a solution y ... more

Kumar Abhinav Abhinav asked   •  3 hours ago

## 1.Raghunath had the following transactions in an accounting year 1.commenced business with cash Rs 50,000 2.paid into bank Rs 10,000 3. Purchase goods for cash Rs 20 ,000and credited Rs 30,000 4.solds goods for cash Rs 40,000... more

Md Danish Tube asked   •  4 hours ago

## What is statatics?

Arun K asked   •  4 hours ago

## Which one of the following pair of compounds illustrate, the law of multiple proportion? A) CuO and Cu2O B) SnCl2& PbCl2 C) CaC2 and CaSO4 D) H2O & D2O?

Swarn Kaur asked   •  4 hours ago

## Mass of sucrose C12H22O11 produced by mixing 84 gm of carbon, 12 gm of hydrogen and 56 lit. O2 at 1 atm & 273 K according to given reaction, is C(s) + H2(g) + O2(g) → C12H22O11 (s)a)138.5b)155.5c)172.5d)199.5Correct answer is option 'B'. Can you explain this answer?

Darazuddin Ahmed Ahmed asked   •  4 hours ago

## Radius of the nucleus is equal to 10^-12 cm and that of the atom is equal to 10^-8cm.What is the fraction of the volume of the atom occupied by nucleus?

Dip Shah asked   •  4 hours ago

## Skull of frog is :-a)Tricondylicb)Monocondylicc)Dicondylicd)PolyconylicCorrect answer is option 'C'. Can you explain this answer?

Pritam Goswami asked   •  4 hours ago

## Rectify the following errors identified in the books of Dutt and also prepare the suspense account. The Trial Balance did not match, Rs 14,930 being in excess credit. The difference was placed in suspense account. a. An amoun... more

Lavanya Jain asked   •  4 hours ago

## Switch (code) {case a: t1.setText("It is a"); case b : t1.setText("it is b"); break; case c : t1.setText("it is c"); deffault:t1.setText(" not a,b,c"); What us output If case a case b and case c and deffault is executed?

Kanya Saluja asked   •  4 hours ago

## If autonomous consumption expenditures by the government increases by rs 5,000.find increasse in equilibrium gdp when half of the income is always spent on the purchase of goods for consumpion?

Swetha Raj asked   •  4 hours ago

## Ultrafilatration occurs in a glomerulus when-a)Osmotic pressure exceeds hydrostaticpressureb)Hydrostatic pressure exceeds osmoticpressurec)Colloidal osmotic pressure plus capsularpressure remain less than glomerularhydrostatic pressured)Capsular hydrostatic pressure exceedsglomerular hydrostatic pressureCorrect answer is option 'C'. Can you explain this answer?

Sanchit Rai asked   •  4 hours ago

## The points of intersection of the curves whose parametric equations are x= t^2 1, y=2t and x=2s,y=2/s are given by?

Urvi Rawal Rawal asked   •  4 hours ago

## what is inertia Related: Fun Video: Newton's Laws of Motion?

Ayushi Singh asked   •  4 hours ago

## A cyclic process for 1 mole of an ideal gas is shown inFig. in the V-T, diagram. The work done in AB,BC andCA, respectively, isa)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Anshul Birwal asked   •  4 hours ago

## Enthalpy of combustion of methane and ethane are -210 kcal/mol and -368 kcal/mol . the enthalpy of combustion of decane is (a)-158 kcal (b) -1632 kcal (c) -1700 kcal (d) data is incomplete?

Pushpak Kore asked   •  4 hours ago

## If 40.6 g of hydrocarbon contain 4.21 × 10^23 molecules then the hydrocarbon can be -?

Devender Surya Surya asked   •  5 hours ago

## (vii) Which of the following is opposite in meaning to the word slew as used in the passage: a) Plenitude b) Myriad c) Paucity d) abundance?

Suman Kumar asked   •  5 hours ago

## Lim tan (xsquare -1)x-1 where x tends to 1?

Manu Kanwar Kanwar asked   •  5 hours ago

## Draw a histogram from the following data: Marks 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Students 5 10 15 20 12 8 4​?

Vibhor K Mishra asked   •  5 hours ago

## The velocity(v)–displacement(x) graph of a particle moving in a straight line is shown below. (1) what is the relation between v and x ? (2) obtain the relation between acceleration and displacement and plot it.?

Prashant Patil asked   •  5 hours ago

## Solve by cramer's rule 1/x 1/y=3/2, 1/y 1/z=5/6 , and 1/z 1/x=4/3?

Yash Prabhu asked   •  5 hours ago

## 20 ml of a mixture of C2H4 and C2H6 gases is burnt completely in excess of Co2 .The volume of Co2 gas formed is :?

Prakash Susar asked   •  5 hours ago

## If a car with acceleration dependent on displacement as a=6x^2 2x 5m/s^2 find the velocity of the particle ,when it is at x=3 metre ,given that ,initially it starts from x=1 with velocity 2m/s ?

Prabakaran Prathabasingh asked   •  5 hours ago

## A body B is capable of remaining stationary inside a liquid at the position shown in Fig (a). If the whole system is gently placed on smooth inclined plane (Fig b.) and is allowed to slide down, then (0 < θ < 900 )                                                         a)The body will move up (relative to liquid)b)The body will move down (relative to liquid)c)The body will remain stationary (relative to liquid)d)The body will move up for some inclination θ and will move down for another inclination θ .Correct answer is option 'D'. Can you explain this answer?

Abdul Wahid Khan asked   •  5 hours ago

## Find the reasultant of two velocitys 3m/s along east and 4m/s along north?

Ansh Saraswat Saraswat asked   •  5 hours ago

## Sundry items of plant sold for ₹ 26,000 had been entered in the Sales Book, the total of which book had been posted to Sales Account?

Vansh Tandon asked   •  5 hours ago

## Four particles lie initially at the corners of a square of side length L. All the particles start to move with speed v. A moves towards B, B moves towards C, C moves towards D and D moves towards A. The distance covered by a ... more

Kartik Kumar asked   •  5 hours ago

## a equilateral triangle whose sides are A .the vertices of a triangle are (x1,y1),(x2,y2),(x3,y3) then the square of the determinant is

Prishu Gupta asked   •  5 hours ago

## Which cells secretes wax located at the outer surface of body wall ?[RPMT  86, AIPMT  83]a) Trophocytesb)Oenocytesc)Trichogend)MycetocytesCorrect answer is option 'B'. Can you explain this answer?

Shashank Sharma asked   •  5 hours ago

## In which part of cockroach is present completely developed endoskeleton and  exoskeleton both ?[RPMT - 95]a)In head regionb)Thoracic regionc)Abdominal regiond)In all regionsCorrect answer is option 'A'. Can you explain this answer?

Neelkanth Pandey asked   •  5 hours ago

## Purchases during the year way to lakh expenses amounted to 20,000 fails with 250002 calculated profit for the year rupees 30000 followed the concept of?

Sanjukta Patra asked   •  5 hours ago

## Three identical blocks of mass 0.6 kg are connected by light strings as shown in the figure. They move on a smootb horizontal surface with an acceleration of 4.0m/sec2 under the action of a force F. Calculate F and the tensio... more

Het Patel asked   •  5 hours ago

## A garden sprinkler has 150 small holes, each of 2 mm2 area. If water is supplied at the rate of 0.3 litres/s, then find the average velocity of the spray.a)300 cm/sb)22.5 cm/sc)0.1 cm/sd)100 cm/sCorrect answer is option 'D'. Can you explain this answer?

Deep Mani asked   •  6 hours ago

## What Lothar meyer did in discovery of periodic table?

Sunjar asked   •  6 hours ago

## A particle is executing S.H.M with an amplitude of 4 cm and time period 12 sec. The time taken by the particle in going from its mean position to a position of displacement equal to 2 cm is T1..The time taken from this displaced position of 2 cm to reach the extreme position is T2. Therefore, T1/ T2 will bea)1/ 3b)1/2c)41276.0d)1Correct answer is option 'B'. Can you explain this answer?

Santosh Neeraksh asked   •  6 hours ago

## The pH of aqueous solution of NH_(4)CN(K_(2) of HCN is 9.2times10^(-10)&K_(b) of NH_(4)OH is 1.8times10^(-5))?

Deepak Meena asked   •  6 hours ago

## For a commodity delta p /p=2.0 and price elasticity of demand is -0.5find quantity demand after fall in price when initially it was 60 unit?

Junu Pegu asked   •  7 hours ago

## In which of the families the stamens are in two whorls and epiphyllous -a)Malvaceaeb)Solanaceaec)Liliaceaed)CasalpinoideaeCorrect answer is option 'C'. Can you explain this answer?

Ultimate Physics asked   •  7 hours ago

## Two identical balls are interconnected with a massless and inextensible thread. The system is in gravity free space with the thread just taut. Each ball is imparted a velocity v, one towards the other ball and the other perpendicular to the first, at t = 0. Then,a)The thread will become taut at t = (L/v)b)The thread will become taut at some time t < (L/v).c)The thread will always remain taut for t > (L/v)d)The kinetic energy of the system will always remain mv2.Correct answer is option 'A,C'. Can you explain this answer?

Mansi Behl asked   •  7 hours ago

## Identify the correct statement(s)a)The friction force acting on the cylinder may be more than that acting on the ringb)The friction force acting on the ring may be more than that acting on the cylinderc)If the friction is sufficient to roll the cylinder then the ring will also rolld)If the friction is sufficient to roll the ring then the cylinder will also rollCorrect answer is option 'B,D'. Can you explain this answer?

Ashik Ashi asked   •  7 hours ago

## How to prepare a cash book with cash and bank column?

Janvi Sahu asked   •  7 hours ago

## The horizontal range and maximum height at tained by a projectile are R and H, respectively. If a constant horizontal acceleration a = g/4 is imparted to the projectile due to wind, then its horizontal range and maximum height will bea)b)c)(R + 2H),Hd)(R + H), HCorrect answer is option 'D'. Can you explain this answer?

Nikita Aggarwal asked   •  7 hours ago

## What is the relation between torque and angular momentum?a)T = ωlb)c)T = L/td)T = lω2Correct answer is option 'B'. Can you explain this answer?

Mithali Goud asked   •  7 hours ago

## Similarity between septal nephridia and Malpighian tubules is that :-[CPMT- 88]a)Both excrete ureab) Both open in body cavityc)Both leave excretory products in intestined)NoneCorrect answer is option 'C'. Can you explain this answer?

Parth Bansal asked   •  7 hours ago

## The area of the region representation by[x+y]+[x-y] =5 for x>=0 y>= 0 and x>= y is where [.] Denotes g.i.f.?

\\twinkle // asked   •  7 hours ago

## Ompare the bond angles in SiO4 4-, clo4 -, po4 3-, so4 2-?

Aman Goel asked   •  7 hours ago

## Pick up the correct statements regarding isomers of C2FCIBrta)It has three pair of geometrical isomersb)It has total eight isomersc)Two of its isomers where F and CI are trans, have same dipole momentd)Two of its isomers where F and Br are trans, are non-polar Correct answer is option 'A,C'. Can you explain this answer?

Sonali Kawetra asked   •  7 hours ago

## Which one of the following is paramagnetic?a)NOb)O3c)COd)N2Correct answer is option 'A'. Can you explain this answer?

Varun Lucky asked   •  7 hours ago

## Image of px+qy+r=0 with respect to the line lx+my+n=0 is...

Kajal Rathore asked   •  7 hours ago

## Direction (Q. Nos. 22) This section contains 1 questions. when worked out will result in an integer from 0 to 9 (both inclusive)Q. Most acidic H in the following compound is attached to C-atoms denoted by at S-N. ( ) ...Correct answer is '1'. Can you explain this answer?

Ram Mohith asked   •  8 hours ago

## Let z be any complex number and if arg(z - i/z - 1) = 3π/4 , then find the maximum value of |z| (or) |z| is always less than, (A) 1/2 (B) 1/√2 - 1/2 (C) 1 (D) None of these?

Preethi Sri asked   •  8 hours ago

## 20 metre deep like the bottom is at a constant temperature is 14 degree Celsius the act temperature is constant at 10 degree Celsius the thermal conductivity of ice is 4 times that of water lifting the expansion of water on freezing the maximum thickness is Ruby Related: Temperature and Heat (Measurement)?

Simran Patidar asked   •  8 hours ago

## 9(4-¹/x) 5(6-¹/x)<4(9-¹ )?="">

Rishab Jain asked   •  8 hours ago

## A particle is projected qt an angle of projection a and after t seconds it appears to have an angle B with the horizontal. The initial velocity is?

Harshit Verma asked   •  8 hours ago

## Which of the following has maximum boiling point?a)b)CH3CH2CH2OHc)H2Od)CH3CH2CH2CH3Correct answer is option 'A'. Can you explain this answer?

Sreeresh Surendran asked   •  8 hours ago

## Ratio of σ and π-bonds is maximum ina)tetracyanomethaneb)benzenec)1-phenyl-prop-1-ened)enolic form of acetoneCorrect answer is option 'D'. Can you explain this answer?

Siddayya Swamy asked   •  8 hours ago

## A solid cylinder of mass 20 kg rotates about its axis with angular speed 100rad/s .The radius of the cylinder is 0.25m. a) what is the kinetic energy associated with rotation of the cylinder. B) what is the magnitude of angul... more

Vaishnavi Kshire asked   •  8 hours ago

## Ram started business with cash rs. 25000 and cheque of rs. 25000 to open a bank account.?

Ayush Kumar asked   •  8 hours ago

## If potential of the cell is Pt,H2(1 atm)|HOCN (10-3)||Ag (0.8M)|Ag(s) is 0.98V. Calvulate the Ka for HOCN. Neglect [H ] because of oxidation ofH2(g) ?

Rashi Parihar asked   •  8 hours ago

## Please clear my doupt ,,no one is clearing my query?

Akash Garg asked   •  8 hours ago

## S.kumar&sons close their books on 31st March. Stock taking takes about two weeks. On 31.3.2015 the value of closing stock thus arrived at was Rs 25,000. During the two weeks in which stock taking took place purchases and sale... more

Deepak Kumar asked   •  9 hours ago

## If sec ( 7′• -2 Alafae ) =cosec (5 Alafa - 7•) them the vlaue of Aelafa is .? Answer send to your 1) 60° 2) 50° 3) 40,° 4) 30°?

Creative Channel asked   •  9 hours ago

## In an A.p.,S3=6 and S6=3,prove that; 2(2n 1)Sn 4=(n 4)S2n 1?

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