2019 MHT-CET PCB SET - 01 — MHT - CET STD 12 Science — Question

A coil has inductance 2 H. The ratio of its reactance, when it is connected first to an a.c. source and then to d.c. source, is ____________.

Genetic drift is more significant in ______

A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 20 cm from the lens on the opposite side. If the lens is removed the point where the rays meet will move 10 cm closer to the lens. The focal length of the lens is ______.

Which among the following group 15 elements does not exhibit allotropy?

In which of the following health condition there is persistent increase in arterial blood pressure?

Which polymer from following is used as synthetic leather?

A random variable X has following probability distribution

X = x	1	2	3	4	5	6
P(X = x)	K	3K	5K	7K	8K	K

Then P(2 ≤ X < 5) = _____.

The constraints of an LPP are 7 ≤ x ≤ 12, 8 ≤ y ≤ 13. Determine the vertices of the feasible region formed by them.

The angle of contact at the interface of water glass is 0°, ethyl alcohol-glass is 0°, mercury-glass is 140° and methyl iodide-glass is 30°. A glass capillary is put in a trough containing one of these four liquids. It is observed that the meniscus is convex. The liquid in trough is ____________.