Questions

Immediate, Direct, Register, Register indirect, Implied addressing modes.

For D latch: always@(enable) q<=d;

For D flip flop: always@(opsedge clock) q<=d; 

'an' at the end of the first fixed segment indicates that Q, R and S can't follow the first segment. This leaves us with only one choice i.e. P. This eliminates options 2, 4, and 5.

There are only two such options: option A1and 3. Option 3 can be eliminated since part S ends with 'the' which can't be used as the end of the master statement. Hence, the correct sequence is PRSQ

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Examples of compounds with covalent bonds ::

HCl, CO2, O2,... 

Indian state that has the maximum number of Lok Sabha constituencies is Uttar Pradesh with 80 Lok sabha seats.

A clade is a group of ancestral species and all its descendants. Hence it is a branch of one same species and so monophyletic.