Que : 149. Write the answers in one sentence each :

(i) Write the pH value of acidic solution.

(ii) What is the homogenous mixture of two or more metals '?

(iii) What is the gap between two nerve cells called ?

(iv) How many days are the period of menstruation ?

(v) Write the name of father of genetics.

(vi) Write the lens formula.

(vii) What does an electric circuit mean?

(viii) How many poles does a magnet have ?

Answer:

(i) less than 7

(ii) Metal Alloys

(iii) Synapse

(iv) 3 to 5 days

(v) Gregor John Mandel

(vi) 1/F=1/V-1/U

(vii) ------

(viii) (N and S)