Explanation

"Boat is to water" therefore "Plane is to air "

Explanation

All are the units to measure length while length is a distance.

Explanation

Aves denotes the class to which the birds belongs.

Similarly,

homo-sapiens denotes the class to which man belongs.

Explanation

TRUST 

T - 2 = R

R - 2 = P

U - 2 = S

S - 2 = Q

T - 2 = R

HONEST

H - 2 = F

O - 2 = M

N - 2 = L

E- 2 = C

S - 2 = Q

T - 2 = R

Explanation

Dictionary: ایسی کتاب جہاں سے الفاظوں کے معنی نکالے جائیں

Encyclopedia: ایسی کتاب جہاں سے علم حاصل کی جا سکے

Explanation

 Sip : Gulp :: Touch : Push

Explanation

The teacher and student are two different people

while all others are complimentary to one another.

Explanation

Because 'Consultation' does  have 'E"

Explanation

Salutation : Farewell :: Birth : Death.

This matches the pattern where Salutation is to Farewell as Birth is to Death.

Both representing opposites or beginning and end of a cycle.

Explanation

HOPE : ASPIRES :: Fib : Lie