Distinguish between d.c. and a.c.

(a) What is fertilzation ? (b) Distinguish between internal and external fertilization. (c) What is the site of fertilization in human beings ?

Distinguish between the given pairs. a. b. c. d.

(a) What is sound ? (b) In what ways does and resemble with or differ from light ? (c) What is the audible range ? (d) Distinguish between ultrasonic and supersonic waves.

Distinguish between alpha-D -gluecop-yranose (I) and methyl alpha-D -gluocopyranoside (II) .

Draw any line segment, say AB . Take any point C lying in between AandB. Measure the lengths of AB,BCandAC. Is AB=AC+CB [Note : If A,B,C are any three points on a line such that AC+CB=AB , then we can be sure that C lies between AandB .

In a linear chromosome, map distance between four loci are ab = 12, bc = 4, ad = 2, ac = 8. The distance between c and d will be -

a , b , c , d are in increasing G.P. If the AM between a and b is 6 and the AM between c and d is 54 , then the AM of a and d is

Four ships A,B,C and D are at sea in the following relative positions: B is on the straight line segment AC, B is due north of D and D is due west of C. The distance B and D is 2km. angleBDA = 40^(@), angleBCD = 25^(@) . What is the distance between A and D. ( sin 25^(@) = 0.423 ).

A,B,C and D are four distinct positive integers lying between 1 and 5 both inclusive ,such that c +D = A and D - C = B . What is the maximum possible value of (A + B+ C+D) if none of the numbers is 4 ?

If (a,b) and (c,d) are two points on the whose equation is y=mx+k , then the distance between (a,b) and (c,d) in terms of a,c and m is