A Long tube of uniform cross section of length. 1 metre has two sides X & Y. From the side X, `NH_3` gas is introduced and from the side Y HCI gas is introduce at which protion of the tube where first white fumes are created?

The reading of a barometer decreases from 75 cmHg to 65 cmHg when some air is introduced in the vaccum space of the tube.Initial length of the space was 6 cm.IF the area of cross section of the tube is 1 cm^2 What is the volume of this air at standard pressure?

Two equation of a side of a rectangle is 4x+7y+5=0 and the two vertices are (-3,1) and (1,1) . Find the equations of the other three sides.

X' and 'Y' are the two open ends of a glass tube with a length of 1m. NH_(3) gas through 'X' and HCl gas through 'Y' are simultaneously allowed to enter the tube. As NH_(3) and HCl gases diffuse towards each other inside the tube, they meet and react to form NH_(4)Cl() , and as a result of which a white fume appears. where will the white fume appear first inside the tube?

One side of an equilateral triangle is the line 3x+4y+8=0 and its centroid is at P(1,1) . Find the length of a side.

Two sides of a square are along the straight lines 5x-2y=13 and 5x-2y+16=0 , state which of the following is the length of a side of the square ?

There are 100 persons sitting at equal distances in a row XY. Laughing gas (N_(2)O) is released from the side X and tear gas (mol. Mass=176) from side Y at the same moment and at the same pressure. The person who will have a tendency to laugh and weep simultaneously is-

The equations of two sides of a triangle are 3x-2y+6=0\ a n d\ 4x+5y-20\ a n d\ the orthocentre is (1,1). Find the equation of the third side.

A ray of light is sent along the line 2x-3y=5. After refracting across the line x+y=1 it enters the opposite side after torning by 15^0 away from the line x+y=1 . Find the equation of the line along which the refracted ray travels.