Which gas is evolved during the reaction of an acid with

Which of the following expressions will be true if the expression P > Q = R < S = T ≤ U = V is definitely true?

Statements: M $ K; K & N, N % R, R @ W

Conclusions:     

I. W & K               

How many such pairs of letter are there in the word TELEPHONE, each of which has as many letters between them in the word as in the English alphabet?

Statements: R ≥ S > T; U < V ≤ T; V > W

Conclusions:

I. R > V

II. W < S

  III. T > W

16. Statements:

J ≥ F = P; F > S ≥ A; S ≥ B < C

Conclusions:

I. C > A

II. B < J

Statements: B & X, X # U, U @ K, K % T

Conclusions: I.   X & T                      II. K # B

Statements: S < V = J ≤ G < K, P > L > C, K = A > P

Conclusions:

I. V > P

II. C < K

III. A > S

Statements: B ≤ I; E = D; H > F; C ≤ H; I = D; A ≤ B; H < E

Conclusions:

(i) I > F

(ii) B ≤ H

(iii) A ≤ E

(iv) E > F