MHT-CET PCB 04 — MHT - CET STD 12 Science — Question

Same current is flowing in two a.c. circuits. First contains only inductance and second contains only capacitance. If frequency of a.c. is increased for both, the current will ______.

The reactance of a capacitor in an A.C. circuit is 20 Ω. If the frequency of A.C. is doubled, its reactance will become ______.

The impulse for voluntary muscles for forced breathing starts in ____________.

The force of gravitation between two bodies of mass 1 kg each separated by a distance of 1 m in vacuum is ____________.

If A = {x | x ∈ N, x is a prime number less than 12} and B = {x | x ∈ N, x is a factor of 10}, then A ∩ B = ______.

If x = a(t – sin t) and y = a(1 – cos t), then `("d"y)/("d"x)` = ______.

The order of the differential equation whose general solution is given by `y=C_(1)e^(2x+C_2)+C_3e^x+C_4sin(x+C_5)` is ______.

Identify the function of micropyle in seed.

Choose the CORRECT sequence of human evolution.

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