MHT-CET PCB 03 — MHT - CET STD 12 Science — Question

From the following which one is NOT a disadvantage of self-pollination?

S.I. Unit of emissive power of a body at a given temperature is ______.

Two point charges +3 µC and +8 µC repel each other with a force of 40 N. If a charge of -5 µC is added to each of them, then force between them will become ______.

To get an output X = 1 from the following logic circuit, the input must be ____________.

If the vectors `ahat("i")+hat("j")+hat("k"), hat("i")+bhat("j")+hat("k")` and `hat("i")+hat("j")+chat("k")` are coplanar (a ≠ b ≠ c ≠ 1), then the value of abc - (a + b + c) = ______.

Generally, the embryo sac in angiosperms is ______

Identify the characters that a cloning vector should possess.

i. Origin of replication (Ori)

ii. Ability to destroy the alien DNA

ii. Cloning site to link the alien DNA

iv. The tumour inducing plasmid Ti

v. Selectable marker

vi. Low molecular weight

A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 4 m away. The distance between the first dark fringes on either side of the central bright fringe is ______.

Which among the following sets of compounds is used as raw material for the preparation of sodium carbonate by Solvay process?