class 12

Missing

JEE Main

Which of the following compounds will be suitable for Kjeldah1’s method for nitrogen estimation?

Connecting you to a tutor in 60 seconds.

Get answers to your doubts.

Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

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

Two capacitors \displaystyle{C}_{}

At present, a firm is manufacturing 2000 items. It is estimated that the rate of change of production P w.r.t. additional number of workers x is given by \displaystyle\frac{{{d}{P}}}{{{\left.{d}{x}\right.}}}={100}-{12}\sqrt{{{x}{\dot}}}If the firm employs 25 more workers, then the new level of production of items is

The negation of $s∨(r∧s)$ is equivalent to :

3 g of activated charcoal was added to 50 mL. of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is :

For gaseous state, if most probable speed is denoated by $C_{∗},$ average speed by C and mean square speed by $C,$ then for a large number of molecules the ratios of these speeds are:

The area (in sq. units) of the quadrilateral formed by the tangents at the end points of the latera recta to the ellipse $9x_{2} +5y_{2} =1$, is: