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

The statement pattern (p ∧ q) ∧ [~ r v (p ∧ q)] v (~ p ∧ q) is equivalent to _______.

The following identifies the major features of technology that differentiate modem biotechnology from classical biotechnology.

i. Capability of science to change the genetic material for getting new specific products through rDNA technology, polymerase chain reaction (PCR), microarrays, cell culture and fusion, and bioprocessing.

ii. Ownership of technology and its sociopolitical impact.

iii. Modem biotechnology makes use of only fermentation technology.

iv. Classical biotechnology relies only on principles of plant and animal tissue culture.

In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.

In which area is xerarch succession observed?

A graph of magnetic flux `(phi)` versus current (I) is shown for four inductors A, B, C and D. Larger value of self-inductance is for inductor ____________. 

The range of a projectile, when launched at an angle of 30° with the horizontal is 2 km. What is the range of the projectile, when launched at an angle of 45° with the horizontal?

A first order reaction is 25% completed in 40 minutes. What is the rate constant k tor the reaction?

The rate of disintegration of a radio active element at time t is proportional to its mass, at the time. Then the time during which the original mass of 1.5 gm. Will disintegrate into its mass of 0.5 gm. is proportional to ______.

In the Lucas test for alcohols, the appearance of turbidity is due to the formation of ____________.