Courses

# Class 12

## Feature of wind pollinated flowers?

Yogalakshmi Yogalakshmi answered  •  2 hours ago
The wind pollinated flowers are light in weight and they don't produce any nectar and smell
Ranjith Kumar asked   •  9 minutes ago

## Solid angle subtented at the centre of sphere by its whole surface?

NEET Aspirant answered  •  3 hours ago
Khushi Kanchan asked   •  14 minutes ago

## A solution of hno3 is 5 % (w/w)%. Find the mass of hno3 present in 100ml of solution .( Denisty of solution= 1.4g/m).by using this formula - w/w%= d*10*%mass/molar mass. Molar mass is 63?

Pragati Nargis asked   •  18 minutes ago

## Solve: ∫_0^(-1)x(tan^(-1)⁡x)^2⋅ⅆx?

Kammara Kaveri asked   •  20 minutes ago

## If integral f(tan x) dx=lambda then integral f(tanx) dx=?

J Mamatha asked   •  21 minutes ago

## Find the term in each expansion is (2a b)^6;third term?

Neeraj Kumar asked   •  24 minutes ago

## The two media l and ll are separated by a plane surface having speed of light 2 ×10 pr power 8 m/s and 2.4× 10 pr power 8 m/s respectively. What is the critical angle for a going from l medium to ll?

Aruna Manger asked   •  24 minutes ago

## A manufacturer produced 8,25,16,982and8,13,96,242 shirts during two sucessive years.find the total production of the manufacturers during these two years?

Stylíşh Art asked   •  25 minutes ago

## What are the two water problems in India? Explain with suitable examples?

Shivani Mehta asked   •  28 minutes ago

## Root 3×10^-19c and -10^-6 are placed at (0,0,0)and (1,1,1) respectively . Fond the force on second in vector form?

Gunn Mavi asked   •  33 minutes ago

## Isogamates means the gamates which?

Ramesh Sarda asked   •  36 minutes ago

## The electrode potential of hydrogen electrode is when h3o ion concentration is 10^-5 (pH2=1atm). please explain with calculation. And according to the formula the partial pressure must be written in denominator., but in this... more

Navya Kaur asked   •  37 minutes ago

## A cross between white eyed female and red eyed male Drosophila gives rise red eyed females and white eyed male. Rarely the cross gives rise to white eyed females and red eyed males. This is due toa)Loss of one X-chromosomeb)Segregation of X- chromosome in femalec)Non disjunction of X- chromosome in femaled)Non disjunction of X- chromosome in maleCorrect answer is option 'C'. Can you explain this answer?

Varshini Kanugonda asked   •  39 minutes ago

## Two small similar metal sphere A and B having charge 4 q and - 4q when placed at a certain distance apart exert and electric force F on each other then another identical uncharged sphere C first touched with A then with B and... more

Himani Chouhan asked   •  42 minutes ago

## Calculate compensation of employees from the following data bonus rs.1000, basic salary rs. 15000, dearness allowances rs. 15000, rent free accommodations rs. 3000, loan at conclusion rate of interest rs. 500, employees contr... more

Lone Phone asked   •  50 minutes ago

## The total cost "c" of a firm per day is C =150 +7Q. The firm has a capacity limit of 100 units of output per day what are the domain and range of the cost function?

Happy asked   •  1 hour ago

## According to weiner hypothesis regarding Rh antigen system, the number of genotypes which produce Rh+ phenotype are?

Sahil Pawar asked   •  1 hour ago

## Needed a Video for photosynthesis? Related: Chemistry Class 12?

Amisha Sharma asked   •  1 hour ago

## On the basis of the following information, calculate : 1. Gross profit ratio 2. Debt equity ratio 3. Working capital turn over ratio. Net revenue from operation= 30,00,000 Cost of revenue from operation= 15,00,000 Current lia... more

Mouli Mandal asked   •  1 hour ago

## Crystalline CsBr has a bcc structure. Calculate the edge length if the density of the CsBr crystal is 4.24g/cm^3. (Atomic mass: Cs =133, Br=80)?

Rimpa Mondal asked   •  1 hour ago

## Tha average capital employed in Anjali and co. is Rs.80,00,000 whereas tha net trading profits for the last three years were Rs.12,60,000,Rs.13,50,000 and Rs.14,22,000.In the past three years, the managing Director was paid a... more

Renuka Devi asked   •  1 hour ago

## To produce an emission spectrum of hydrogena)It needs to be in glowing gaseous formb)It needs to be cold and white light shining throughc)It needs to be cool liquid formd)It needs to be hot and white light shining throughCorrect answer is option 'A'. Can you explain this answer?

Amalendu asked   •  1 hour ago

## Two electrons are each 1.5x10^-10m from a proton,then find the magnitude of the net electric force exert on the proton if the angle between the electrons is 65 degrees.?

Komalpreet Anu asked   •  1 hour ago

## Who actually shot the 100th tiger?a)one of the hunters who accompanied the kingb)a soldierc)king’s guestd)British high officerCorrect answer is option 'A'. Can you explain this answer?

Azarudeen asked   •  1 hour ago

## Among the following the most stable compound isa)cis - 1,2 - cyclohexane ediolb)trans - 1,2 - cyclohexane ediolc)cis - 1,3 - cyclohexane ediold)trans - 1,3 - cyclohexane ediolCorrect answer is option 'D'. Can you explain this answer?

Estie Rava asked   •  2 hours ago

## Why was the author renamed?a)to change his nameb)Priest’s suggestionc)to honor his motherd)as an honor to his fatherCorrect answer is option 'C'. Can you explain this answer?

Umakant Umakant asked   •  2 hours ago

## A uniform line charge with linear density λ lies along the y-axis. What flux crosses a spherical surface centered at the origin with r = R  a)2Rλ/ε0b)Rλ/ε0c)λ/ε0d)None of the aboveCorrect answer is option 'A'. Can you explain this answer?

Ashok Patel asked   •  2 hours ago

## nitrogen exception Related: Properties of p - block Elements?

Anand Kumar asked   •  2 hours ago

## Find the locus of orthocentre made by the triangle of vertices( 3,4)(5 cos¢, 5 sin¢)( - 5sin¢, 5 cos¢).?

Sanjeev Kumar Rajpoot asked   •  2 hours ago

## Tan(2tan^-1(1/5) - π/4)?

Princi Tiwari asked   •  2 hours ago

## A buffer solution contains 1 mole of (NH4)2SO4 and 1 mole of NH4OH (Kb=10^-5). The pH of solution will be ?

Drishti Jain asked   •  2 hours ago

## A receive 5/2 times profit than B. C receive 5/2 times profit than A, D receives 2/3 times profit than C. If the profit of the firm is ₹117000 then find profit share of B.?

Anitha Bathula asked   •  2 hours ago

## Ion transport in root occurs 1. Passively through channels 2.actively through channel 3.actively through carriers 4.through both symplast and apoplast Which is true? 1. 1 & 3 2. 2&3&4. 3. 1&3&4 4. 3&4?

Purvi Christian asked   •  3 hours ago

## explain the effect of intensity,potential and frequency Related: NCERT Solutions (Part - 1)- Dual Nature of Radiation and Matter?

Harishkumar asked   •  3 hours ago

## I had a doubt in one dimensional motion in which the projectile was not understand by me?

Shivkumar Sharma asked   •  3 hours ago

## Why adsorption of non polar gas on metal is more as compared to polar gas?

partha mukherjee asked   •  3 hours ago

## Passion works for Protagonist to visit a town of his dream, if he becomes an escapasit from reality, how has he managed the bill for the 1854,I think, in exchange of current currency?

Riya Chaudhary asked   •  3 hours ago

## Needed a Video for English chapters class 12 ka Hindi translation? Related: Explanation and Summary: Lost Spring?

M Suman asked   •  3 hours ago

## The molar volume of KCl and Nacl are 40 ml and 30 ml respectively. Find the ratio of the unit cube edges of the two crystals. Assume both having some packing efficiency?

Ravleen Kaur asked   •  3 hours ago

## Solve. .Diffrential equation 1. (1 x^2)y'=(e^mtan-1x-- y) 2. x y'-y xsiny/x=0 3. y-x y'=a (y^2 x^2 y')?

Aniket Chona asked   •  3 hours ago

## Kalki, the author of ‘The Tiger King’ has used as a background, days of ___ kings dominating their subjects.a)justb)bravec)eccentricd)gullibleCorrect answer is option 'C'. Can you explain this answer?

Ankush Negi asked   •  3 hours ago

## A and b sharing profit and loss in ratio of 5:3,c is admitted into firm .c is to bring in 40000 as capital and required goodwill ,60000 as goodwill is valued for the firm c's share of profit is 1/5th which he acquires 1/10 fr... more

Shivam Mishra asked   •  3 hours ago

## As per AS-26 what type of Goodwill can be shown in the books if account?

Rishi Gupta asked   •  3 hours ago

## A charge particle after being accelerated through a potential difference ‘V’ enters in a uniform magnetic field and moves in a circle of radius r. If V is doubled, the radius of the circle will become?

Nargis Saba asked   •  4 hours ago

## definition of crystal or lattice energy Related: Video: Crystal Lattice and Unit cells?

Tejas Shetty asked   •  4 hours ago

## Light of wavelength 187.5nm can just eject an electron from a metal calculate work function by Einstein's equation?

Physics Wallha Wallha asked   •  4 hours ago

## A metal plate of area 0.01m^2 carries a charge of 100uC. Calculate the outward pull on one side of plate?

Valsa John asked   •  4 hours ago

## Evaluate integral 0 to 2 [x^2]; [ . ] denote greatest integer function?

Ayush Kumar Singh asked   •  4 hours ago

## A conducting rod of length 2m is placed on a horizontal table in north south direction. It carries a current of 5 ampere from south to north. Find the direction and magnitude of magnetic force acting on the rod. Given that ea... more

Polamuri Deepthi asked   •  4 hours ago

## A 2.5 gm impure sample containing weak monoacidic base (mol wt =45)is dissolved in 100 ml water and titrated with 0.5 HCL when (1/5)th of the base was neutralised the pH was found to be 9 and at equivalent. PH of solution is ... more

Vijayakumar M M asked   •  5 hours ago

## Two insulated charged copper spheres a and b of identical size have the charges qa and qb respectively. A third sphere c of the same size but uncharged is brought in contact with the first and then with the second and finally... more

Taranpreet Singh Singh asked   •  5 hours ago

## Answer the following question in 120 to 150 words: 1 X 5 = 5 Marks What are the factors enumerated by Nani Palkhiwala that have made our earth an ailing planet? How can we ensure its health?

Aarthy Durai Durai asked   •  5 hours ago

## A uniform rod is suspended horizontally from its midpoint. A piece of metal whose weight is w is suspended?

Rishabh Jain asked   •  5 hours ago

## A very long uniformly charge, thin rod is oriented along x-axis with its one end at origin and extends along x-axis. The charge per unit length of rod is lamda. Calculate the electric field intensity at x=-a?

Taj Veer asked   •  5 hours ago

## X y=[5. 2] x-y=[3 6] [0. 9] [0 -1]?

Angela Shiny asked   •  5 hours ago

## Two charges of equal magnitude q are placed in air at a distance of 2a?

Khushi Rathi asked   •  5 hours ago

## Biodiversity and it's conservation?

Sapna asked   •  5 hours ago

## a)6, 4 and 4 respectivelyb)4, 6 and 4 respectivelyc)4, 4 and 6 respectivelyd)6, 6 and 4 respectivelyCorrect answer is option 'A'. Can you explain this answer?

Prerith M Philipose asked   •  5 hours ago

## The rate constant of a reaction is 1.5×10^7 sec^-1at 50degree C and 4.5×10^-7 at 100 degreeC. The Arrhenius parameters Ea and A are?

Anushka Sikarwar asked   •  6 hours ago

## Integration of 2xsqrtx^2+1dx?

Sraj Rahi asked   •  6 hours ago

## Solve it. Integration of. dx/2sinx 3secx?

Shreya Alluri Reddy asked   •  6 hours ago

## The orthogonal trajectory of hyperbola xy=c is?

Emerie Moses asked   •  6 hours ago

## What is the effect of water-logging to plants?

Navmi Waghmare asked   •  6 hours ago

## Due to ____the depth of an optically denser medium appears to be _____it really depth?

Vaishnawi Sinha asked   •  6 hours ago

## Lim xtends1. (1 x/2 x)^(1-√x)/(1-x) a. 1 b. Does not exist c. √(2/3) d.ln 2?

Poorani Kannan asked   •  7 hours ago

## Needed a Test for Electric Potential? Related: Physics Class 12?

Prince Chaurasiya asked   •  7 hours ago

## A, B, C and D were partners sharing profits in the ratio of 1:2:3: 4. D retired and his share was acquired by A and B equally. Goodwill was valued at 3 years' purchase of average profits of last 4 years, which were 40,000. Ge... more

Niharika T asked   •  7 hours ago

## Which of the following factors are responsible for the increase in the rate of a surface catalysed reaction?(i) A catalyst provides proper orientation for the reactant molecules to react.(ii) Heat of adsorption of reactants on a catalyst helps reactant molecules to overcome activation energy.(iii) The catalyst increase the activation energy of the reaction.(iv) Adsorption increases the local concentration of reactant molecules on the surface of the catalyst.Select the correct answer using the codes given below:a)I & IIb)I & IIIc)II & IVd)I, II & IIICorrect answer is option 'C'. Can you explain this answer?

M Varalakshmi asked   •  7 hours ago

## The rms value of an alternating current which when passed through a resistor produces heat three times of that produced by a direct current of 2A in the same resistor is?

Valsa John asked   •  7 hours ago

## A particle having mass M is projected with velocity v0 from a point P on a horizontal ground making an angle theta with horizontal the talk about the point of projection acting on the particle when it is at the maximum height... more

Poonam Bindal asked   •  7 hours ago

## A ring of radius R has uniform linear charge density lamda the electric field at the centre of ring is?

Sunil Suthar asked   •  7 hours ago

## Integration of √√1-√x÷√√1+√xdx =

Arun Dubey asked   •  7 hours ago

## A,B and C were partners sharing profits in the ratio of 1/2,2/5 and 1/5. Find the new ratio of the remaining partners if C retires?

Pema Deki asked   •  7 hours ago

## A beam of hydrogen molecules is directed toward a wall, at an angle of 55degree with the normal to the wall. Each molecule in the beam has a speed of 1.0km/s and a mass of 3.3×10^-24g .The beam strikes the wall over an area o... more

Kusuma Kusuma asked   •  7 hours ago

## Compare the concentration of M/10 HCL and N/25 HCL solutions?

Suraj Venkatappa asked   •  7 hours ago

## ABC is a right angle triangle in which AB = 3 cm and BC = 4 cm and angle ABC is = π2 . The three charges + 15, + 12 and -20 e.s.u are placed respectively and A , B and C . the force acting on b is125 dynes 35 dynes25 dyneszer... more

Hitesh Goklani asked   •  7 hours ago

## In which intervel the function f(x) 4sin cubex - 6 sin square X +12 sinX +100 on [ 0, pie] strictly increasing and decrease

Nasri Nasi asked   •  8 hours ago

## What is the difference between syngamy and fertilization?

Anjali Saxena asked   •  8 hours ago

## In the rc circuit shown in figure, the capacitor is initially uncharged and switch s is closed at t=0. at time t=to voltage across 2R resistances, is Vo/2. Then?

Shivam Mishra asked   •  8 hours ago

## What is the minimum index of refraction of the material of a totally reflecting prism immersed in water?

Bpeo Abohar1 asked   •  8 hours ago

## At a rather high temperature the Kp values are computed asWhat is the Kp for the reaction ?a)1011 atm–1b)1017 atm–1c)1020 atm–1d)108 atm–1Correct answer is option 'D'. Can you explain this answer?

Anas Amdani asked   •  8 hours ago

## Two identical parallel plate capacitors of same dimensions joined in series are connected to a DC source. When one of the plates of one capacitor is brought closer to the other plate:a)The voltage on the capacitor whose plates comecloser is greater than the voltage on the capacitorwhose plates are not movedb)The voltage on the capacitor whose plates comecloser is smaller than the voltage on the capacitorwhose plates are not movedc)The voltage on the two capacitors remain equald)The applied voltage is divided among the two directlyas the capacitanceCorrect answer is option 'B'. Can you explain this answer?

Nutan Jaiswal asked   •  8 hours ago

## During formation of graph of action spectrum the rate of photosynthesis is measured by 1. formation of glucose molecule 2.oxygen released 3. by water splitting 4. amount of carbon dioxide consumed?

Shuaib Siddique asked   •  8 hours ago

## What kind of a world does the poet visualize Related: Important Questions - Poem 3 - Keeping Quiet, English Flamingo, Class 12?

Hardik Pandey asked   •  9 hours ago

## Raw material consumed 25000,factory over heads 10/100 direct wages,direct wages 15000 ,adiministration over heads at at 20/100 of works cost?

Pammy Soren asked   •  9 hours ago

## If a is the edge length of the unit cell of an atomic crystal having fcc lattice then what is the distance of closest approach between the two atoms in the crystal?

Julika Murmu asked   •  9 hours ago

## Prove that the set 2Z of even integers forms a group with respect to the binary operation addition.?

Sanhit Sil asked   •  9 hours ago

## A constant volume air thermometer has a bottle which is partly filled with mercury. Find the ratio of volume of mercury present in the bottle to the volume of the bottle if the volume coefficients of mercury and glass are 1.8... more

Nutan Jaiswal asked   •  9 hours ago

## How many statements are correct with respect to ETS? 1.ETS is helpful in Restoration of NAD and FAD 2. oxygen is terminal electron acceptor in electron transport system 3.ubiquinone and FMN are hydrogen career and helpful i... more

Kumari Kajal asked   •  9 hours ago

## Consider the following statements(i) First order reaction completes in infinite time. This true and a basic of reaction kinetics(ii) Average life is independent of concentration for first order reactions t = 1/λ(iii) t75% = 1.5 t1/2 for zero order reaction as there is linear dependence(iv) t75% = 2t1/2 for first order reaction as there is exponential dependenceCorrect among the following area)(i),(iii) and (iv)b)(ii),(iv)c)(i),(ii)d)All are correctCorrect answer is option 'D'. Can you explain this answer?

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