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Solubility product of silver bromide is $5.0×10_{−13}$. The quantity of potassium bromide (molar mass taken as 120 g of $mol_{−1}$) to be added to 1 litre of 0.05 M solution of silver nitrate of start the precipitation of AgBr is

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A motor cycle starts from rest and accelerates along a straight path at $2m/s_{2}$. At the starting point of the motor cycle there is a stationary electric sire. How far has the motor cycle gone when the driver hears the frequency of the siren at 94% of its value when the motor cycle was at rest ? (speed of sound $=330ms_{−1}$)

The dimension of magnetic field in M, L, T and C (Coulomb) is given as

The sum of the series $2!1 −3!1 +4!1 −…$ upto infinity is

The half life period of a first order chemical reaction is 6.93 minutes. The time required for the completion of 99% of the chemical reaction will be (log 2 = 0.301)

Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly ?

Let $f(x)=(x+1)_{2}−1,x≥−1$Statement 1: The set ${x:f(x)=f_{−1}(x)}={0,−1}$. Statement 2: f is a bijection.

The conjugate of a complex number is $i−11 $. Then the complex number is

If $u^$and $v^$are unit vectors and $θ$is the acute angle between them, then $2u^×3v^$is a unit vector for