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

A player tosses 2 fair coins. He wins Rs. 5 If 2 heads appear, Rs. 2 If 1 head appear and Rs.1 if no head appears, then variance of his winning amount is ______.

Two species competing for the same resources, avoid competition by choosing different times for feeding, also known as ______

During discharging the change taking place at cathode in lead accumulator is:

The average K.E. of hydrogen molecules at 27° C is E. The average K.E. at 627° C is ____________.

Match Column I and Column II and choose the correct option.

	Column 'A'		Column 'B'
i.	Callus	a.	Breeding crops for improving their nutritional value.
ii.	Morphogenesis	b.	DNA molecules carrying the desired gene.
iii.	Biofortification	c.	Unorganized mass of loosely arranged parenchymatous cells.
iv.	Vectors	d.	Development of different plant organs from callus.

Which of the following is the right combination of primers in a PCR to amplify the DNA product?

In A.C. circuit having only capacitor, the current ______.

Polymerase Chain Reaction is made possible by ____________.

The three electrons have the following set of quantum numbers:

X = 6, 1, −1, `+1/2`

Y = 6, 0, 0, `+1/2`

Z = 5, 1, 0, `+1/2`

Identify the CORRECT statement.

In DNA molecule, pairing between two complementary nucleotides takes place by ________ bonds.