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The sum of coefficients of integral powers of x in the binomial expansion of $(1−2x )_{50}$ is:

The coagulating power of electrolytes having ions $Na_{+},Al_{3+}andBa_{2+}$ for arsenic sulphide sol increases in the order:

If the function, $g(x)={kx+1 ,0≤x≤3mx+2,3$

The equation of the plane containing the line $2x−5y+z=3;x+y+4z=5$, and parallel to the plane, $x+3y+6z=1$, is :

As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :

A rectangular loop of sides 10 cm and 5 cm carrying a current 1 of 12 A is placed in different orientations as shown in the figures below : ltBrgt If there is a uniform magnetic field of 0.3 T in the positive z direction, in which orientations the loop would be in (i) stable equilibrium ?

A ray of light along $x+3 y=3 $gets reflected upon reaching x-axis, the equation of the reflected rays is

The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M)HCl will be: