Daily NEET MCQ- May 16, 2022 - NEET MCQ

Lithium and magnesium are harder than other metals in the group because they have a strong metallic bond among themselves. This is one of the similarities between Lithium and magnesium having a diagonal relation.

The Ionic radius of Lithium cation is 0.60A°, which is very close to that of magnesium cation that is 0.65A°, therefore the difference between the Ionic radius of cations of Lithium and magnesium is 0.05A°.

All the standard states of a substance are considered when the temperature is 298 Kelvin and the pressure is 1 bar. 1 bar = 0.987 atmospheric pressure = 10000 Pascal = 750.0617 mm of Mercury.

Energy change when 1 mol of water at 0-degree centigrade changes into ice at 0 degrees in centigrade is 6 kJ/mol, So the internal energy change when 2 moles of water at 0 degrees converts into ice at 0 degrees is 12 kJ/mole.

The value of C_v for a monatomic gas is 3/2 R and
C_P is 5/2 R.
Thus the value of γ is:
C_P/C_V= 5/3.

A diatomic gas has 3 translational degrees of freedom and 2 rotational degrees of freedom. Thus, the total number of degrees of freedom is 5.

The value of C_V for a diatomic gas is 7/2 R and
C_P is 9/2 R.
Thus the value of γ is:
C_P/C_V = 7/5.

Acceleration = dv/dt. To find the acceleration, we can differentiate the velocity equation with respect to time. a = 2 + 10t. On putting, t = 10, we get a = 102.

Pteridophytes are the first ever evolved plants with vascular tissue in them i.e. they contain xylem and phloem. As they contain vascular tissues, they are capable of growing several meters tall.

Sporophyte is dominant phase in the life cycle of a Pteridophyte whereas Gametophyte, Prothallus and Zygote are intermediary stages in the life cycle of a Pteridophyte.