Clandestine

A body of mass 3 kg experiences a force F=(2i +2j) N. If its initial velocity v=( -8i + 4j) m/s, then the time at which it will have a velocity just along the y-axis is ? (The expressions contain vector notations above them)

A compound microscope has an objective lens with a focal length of 1.5 cm and an eye piece of focal length 5 cm. It is focused on an object which is at a distance of 1.8 cm. The length of the microscope for normal adjustment is ?

The number of moles of KMnO4 required to react with 5 moles of H2O2 in acidic medium is ?

In the reaction, K2Cr2O7 +14 HCl ----> 2KCl + 2CrCl3 + 3Cl2 + 7H2O how many moles of HCl act as reducing agent in balanced chemical equation?

Co-ordination number of Cr in Cr(n^6 - C6H6)2 is

A capacitor of capacity C is charged fully by a cell of emf V/2 and then it is disconnected and again connected with a cell of emf V (+ve plate of capacitor with +ve terminal of cell and vice versa). The heat developed in connecting wire during charging b...

Moment of inertia of a 'non-uniform' ring of mass M and radius R about axis through centre and normal to its plane is

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Phenol extraction is a commonly used method for removing proteins from a DNA sample, e.g. to remove proteins from cell lysate during genomic DNA preparation. It’s commonly used, but not commonly understood. The basic protocol I’ll start with a quick outli...