### ALL Questions

## Three numbers are chosen at random without replacement from 1,2,3 ............10. The probability that minimum of chosen number is 4 and their maximum is 8.

Three numbers are chosen at random without replacement from 1,2,3 ............10. The probability that minimum of chosen number is 4 and their maximum is 8.

## The real value of 'a' for which sum of square of the roots of the equation x^2 -(a-3)x-(a+1) =0 assume the least value is?

The real value of 'a' for which sum of square of the roots of the equation

## An electron & a photon have same energy E. Find the ratio of de Broglie wavelength of electron to wavelength of photon. Given mass of electron is m & speed of light is C.

An electron & a photon have same energy E. Find the ratio of de Broglie wavelength of electron to wavelength of photon. Given mass of electron is m & speed of light is C.

## An inductor of inductance 10 mH and a resistance of 5 Om is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t = infinity to current at t = 40 sec.

An inductor of inductance 10 mH and a resistance of 5 Om is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t = infinity to current at t = 40 sec.

## When m gram of steam at 100°C is mixed with 200 gm of ice at 0°C. it results in water at 40°C. Find the value of m in gram .

When m gram of steam at 100°C is mixed with 200 gm of ice at 0°C. it results in water at 40°C. Find the value of m in gram .

## Magnitude of resultant of two vectors P and Q is equal to magnitude of P . Find the angle between Q and resultant of 2P and Q

Magnitude of resultant of two vectors P and Q is equal to magnitude of P . Find the angle between Q and resultant of 2P and Q

## How to Migrate Emails from Gmail to Office 365?

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## How Steroid hormone Produce

How Steroid hormone Produce

## Which organ of the body produces the fluid known as bile?

**Which organ of the body produces the fluid known as bile?**

## yellow dust appears on the fingers, whenever we touch the middle of a flower. These tiny yellow grains are one of the most precious substances in nature because they contain the secret of plant life. What is this dust called?

**yellow dust appears on the fingers, whenever we touch the middle of a flower. These tiny yellow grains are one of the most precious substances in nature because they contain the secret of plant life. What is this dust called?**

## What is air-borne disease?

What is air-borne disease?

## Which veins have the littlest measurement?

Which veins have the littlest measurement?

## What makes a reptile a reptile?

What makes a reptile a reptile?

## Parasites are plants that need

Parasites are plants that need

## Which of coming up next isn't an individual from the nutrient B complex?

Which of coming up next isn't an individual from the nutrient B complex?

## Which of coming up next is an enormous vein that diverts blood from the heart

Which of coming up next is an enormous vein that diverts blood from the heart

## The hysteresis curve for a material is shown in the figure. Then for the material retentivity, coercivity and saturation magnetization respectively will be?

The hysteresis curve for a material is shown in the figure. Then for the material retentivity, coercivity and saturation magnetization respectively will be?

## A ring is rotated about diametric axis in a uniform magnetic field perpendicular to the plane of the ring. If initially the plane of the ring is perpendicular to the magnetic field. Find the instant of time at which EMF will be maximum & minimum respectively

A ring is rotated about diametric axis in a uniform magnetic field perpendicular to the plane of the ring. If initially the plane of the ring is perpendicular to the magnetic field. Find the instant of time at which EMF will be maximum & minimum respectively?

## A solid cube of side 'a' is shown in the figure. Find maximum value of 100 b/a for which the block does a not topple before sliding.

A solid cube of side 'a' is shown in the figure. Find maximum value of 100 b/a for which the block does a not topple before sliding.

## Two sources of sound moving with same speed v and emitting frequency of 1400 Hz are moving such that one source s1 is moving towards the observer and s2 is moving away from observer. If observer hears beat frequency of 2 Hz. Then find the speed of source. Given

Two sources of sound moving with same speed v and emitting frequency of 1400 Hz are moving such that one source s1 is moving towards the observer and s2 is moving away from observer. If observer hears beat frequency of 2 Hz. Then find the speed of source. Given

## In YDSE, separation between slits is 0.15 mm, distance between slits and screen is 1.5 m and wavelength of light is 589 nm, then fringe width is

In YDSE, separation between slits is 0.15 mm, distance between slits and screen is 1.5 m and wavelength of light is 589 nm, then fringe width is?

## The surface mass density of a disc of radius a varies with radial distance as = A + Br where A & B are positive constants then moment of inertia of the disc about an axis passing through its centre and perpendicular to the plane

The surface mass density of a disc of radius a varies with radial distance as

where A & B are positive constants then moment of inertia of the disc about an axis passing through its centre and perpendicular to the plane

## A block of mass 10kg is suspended from string of length 4m. When pulled by a force F along horizontal from midpoint. Upper half of string makes 45° with vertical, value of F is

A block of mass 10kg is suspended from string of length 4m. When pulled by a force F along horizontal from midpoint. Upper half of string makes 45° with vertical, value of F is

## Form a differential equation of family of all the circles having centres on -axis and radius unity?

Form a differential equation of family of all the circles having centres on -axis and radius unity?

## A is one of 6 horses entered for a race and is to be ridden by one of two jokceys B and C.It is 2 to 1 that B rides A, in which case all the horses are equally likely to win .If C rides A, his chances of winning is trippled . what are the odds against winning of A?

A is one of 6 horses entered for a race and is to be ridden by one of two jokceys B and C.It is 2 to 1 that B rides A, in which case all the horses are equally likely to win .If C rides A, his chances of winning is trippled . what are the odds against winning of A?

## Two circle with radii r1 and r2(r1> r2 >=2) touch each other externally. if theta be the angle between the direct common tangents, then theta is?

Two circle with radii r1 and r2(r1> r2 >=2) touch each other externally. if be the angle between the direct common tangents, then is?

## The equation of the circle which has tangent 2x -y -1 =0 at (3,5) on it and with the centre on x+y =5, is?

The equation of the circle which has tangent 2x -y -1 =0 at (3,5) on it and with the centre on x+y =5, is?

## If two circles, each of radius 5 unit, touch each other at (1,2) and equation of their common tangent is 4x + 3y =0 ,then equation of the circle a portion of which lies in the all the quadrants is?

If two circles, each of radius 5 unit, touch each other at (1,2) and equation of their common tangent is 4x + 3y =0 ,then equation of the circle a portion of which lies in the all the quadrants is?

## The centre of a circle is (2, -3) and the circumference is 10 pie. The equation of circle is?

The centre of a circle is (2, -3) and the circumference is 10 pie. The equation of circle is?

## The equation of the circle radius 5 in the first quadrant which touches x- axis and the line 4y = 3x is?

The equation of the circle radius 5 in the first quadrant which touches x- axis and the line 4y = 3x is?

## The slope of the tangent at the point (h,h) on the circle x*x + y*y = a*a is?

The slope of the tangent at the point (h,h) on the circle

is?

## A lift of mass 920 kg has a capacity of 10 persons. If average mass of person is 68 kg. Friction force between lift and lift shaft is 6000 N. The minimum power of motor required to move the lift upward with constant velocity 3 m/s is

A lift of mass 920 kg has a capacity of 10 persons. If average mass of person is 68 kg. Friction force between lift and lift shaft is 6000 N. The minimum power of motor required to move the lift upward with constant velocity 3 m/s is

## An inductor of inductance 10 mH and a resistance of 5 is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t = infinity to current at t = 40 sec.

An inductor of inductance 10 mH and a resistance of is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t = infinity to current at t = 40 sec.

## Find the dimension of below problem?

Find the dimension of

## A capacitor of 60 pF charged to 20 volt. Now battery is removed and then this capacitor is connected to another identical uncharged capacitor. Find heat loss in nJ.

A capacitor of 60 pF charged to 20 volt. Now battery is removed and then this capacitor is connected to another identical uncharged capacitor. Find heat loss in nJ.

## A battery of unknown emf connected to a potentiometer has balancing length 560 cm. If a resistor of resistance 10 om is connected in parallel with the cell the balancing length change by 60 cm. If the internal resistance of the cell is n/10 om, the value of 'n' is

A battery of unknown emf connected to a potentiometer has balancing length 560 cm. If a resistor of resistance

is connected in parallel with the cell the balancing length change by 60 cm. If the

internal resistance of the cell is

, the value of 'n' is

## Half life of 90Sr is 6.93 years. In a child body 1 ug of 90Sr dopped in place of calcium, how many years will it take to reduce its concentration by 90% (Assume no involvement of Sr in metabolism).

Half life of 90Sr is 6.93 years. In a child body 1 ug of 90Sr dopped in place of calcium, how many years will it take to reduce its concentration by 90% (Assume no involvement of Sr in metabolism).

## Cl2 on reaction with hot & conc. NaOH gives two chlorine having products X and Y. On treatment with AgNO3, X gives precipitate. Determine average bond order of Cl and O bond in 'Y' ?

Cl2 on reaction with hot & conc. NaOH gives two chlorine having products X and Y. On treatment with AgNO3, X gives precipitate. Determine average bond order of Cl and O bond in 'Y' ?

## Each of solution A and B of 100 L containing 4 g NaOH and 9.8 g H2SO4. Find pH of solution which is obtain by mixing 40 L solution of A and 10 L solution of B?

Each of solution A and B of 100 L containing 4 g NaOH and 9.8 g H2SO4. Find pH of solution which is obtain by mixing 40 L solution of A and 10 L solution of B?

## Purest form of commercial iron is?

Purest form of commercial iron is?

## Focal length of convex lens in air is 16 cm (glass = 1.5). Now the lens is submerged in liquid of refractive index 1.42. Find the ratio of focal length in medium to focal length in air has closest value?

Focal length of convex lens in air is 16 cm (glass = 1.5). Now the lens is submerged in liquid of refractive index 1.42. Find the ratio of focal length in medium to focal length in air has closest value?

## An ideal fluid is flowing in a pipe in streamline flow. Pipe has maximum and minimum diameter of 6.4 cm and 4.8 cm respectively. Find out the ratio of minimum to maximum velocity.

An ideal fluid is flowing in a pipe in streamline flow. Pipe has maximum and minimum diameter of 6.4 cm and 4.8 cm respectively. Find out the ratio of minimum to maximum velocity?

## Activity of a substance changes from 700 s–1 to 500 s–1 in 30 minute. Find its half-life in minutes?

Activity of a substance changes from 700 s–1 to 500 s–1 in 30 minute. Find its half-life in minutes?

## Cascaded Carnot engine is an arrangement in which heat sink of one engine is source for other. If high temperature for one engine is T1, low temperature for other engine is T2 (Assume work done by both engine is same) Calculate lower temperature of first engine.

Cascaded Carnot engine is an arrangement in which heat sink of one engine is source for other. If high temperature for one engine is T1, low temperature for other engine is T2 (Assume work done by both engine is same) Calculate lower temperature of first engine.

## In a house 15 Bulbs of 45W,15 bulbs of 100W,15 bulbs of 10W and Two heaters of 1KW each is connected to 220 V Mains supply then find minimum fuse current?

In a house 15 Bulbs of 45W,15 bulbs of 100W,15 bulbs of 10W and Two heaters of 1KW each is connected to 220 V Mains supply then find minimum fuse current?

## If weight of an object at pole is 196 N then weight at equator is [g = 10 m/s2 ; radius of earth = 6400 Km]

If weight of an object at pole is 196 N then weight at equator is [g = 10 m/s2 ; radius of earth = 6400 Km]

## What is the wavelength emitted during the transition of electron in between two levels of Li2+ ion whose sum is 4 and difference is 2?

Calculate the wavelength emitted during the transition of electron in between two levels of Li2+ ion whose sum is 4 and difference is 2.

## Why electron cannot exist inside the nucleus according to Heisenberg’s uncertainty principle?

Why electron cannot exist inside the nucleus according to Heisenberg’s uncertainty principle?

## Organisms produced through asexual reproduction have low adaptability to the changing environment. Justify the statement

Organisms produced through asexual reproduction have low adaptability to the changing environment. Justify the statement

## How much amount of energy will be liberated from 2 moles of glucose through cellular respiration?

How much amount of energy will be liberated from 2 moles of glucose through cellular respiration?