MHT-CET PCM 01 — MHT - CET STD 12 Science — Question

The disease that is generally treated by the use of bcnzyl penicillin, ampicillin and chloramphenicol is ____________.

Which of the following is correct decreasing order of the repulsive Interaction of electron pairs in a molecule?

The common name of 1-chloro-2, 2-dimethyl propane is ______.

The enthalpy change accompanying a reaction in which 1 mole of the substance in the standard state reacts completely with oxygen or is completely burnt is called as ____________.

The derivative of `sqrt(x^2 + 1)` is

The values of θ satisfying sin7θ = sin4θ - sinθ and 0 < θ < `pi/2` are ______

A tube closed at one end and containing air produces fundamental note of frequency 256 Hz. If the tube is open at both ends, the fundamental frequency will be ____________.

Meselson and Stahl used ____________ in the experiment to prove semiconservative DNA replication.

If p, q and r are non-zero, non-coplanar vectors then [p + q - r  p - q  q - r] = ______.

Identify the process by which competent host can take up chimeric DNA.