w 3 construction co

Tests for Carbon Monoxide - 1. Carbon monoxide is colourless, neutral gas. 2. It burns in air or oxygen with a pale blue flame to form carbon dioxide. 3. Carbon monoxide has no action on limewater, whereas carbon..

1. Carbon monoxide is colourless, neutral gas. 2. It burns in air or oxygen with a pale blue flame to form carbon dioxide. 3. Carbon monoxide has no action on limewater, whereas carbon dioxide turns limewater milky. 4. A strip of..

. In normal respiration, the haemoglobin of blood gets oxidises to an unstable compound, oxy-haemoglobin. This compound serves as an oxygen carrier. It carries the oxygen to the cells and in the process it is reconverted into haemoglobin. It returns to the lungs to repeat the process. Carbon..

Dihydrogen reacts with CO at 700 K in the presence of a catalyst ZnO/Cr 2 O 3 to form methanol...

CO is produced by incomplete combustion of fuels in industry and in automobiles, and is present in tobacco smoke. CO is prepared by the dehydration of formic acid or oxalic acid using concentrated H 2 SO 4 . Commercially, CO is produced by reduction of CO 2 with coke. CO is slightly lig..

To construct angles of 60 o , 120 o and 30 o..

To construct angles of 60 o , 120 o and 30 o (i) Draw a line AB. (ii) With A as centre, taking any suitable radius, draw an arc which cuts AB at P. (iii) With P as centre and the same radius, cut the arc at Q. (iv) From Q, with the same radius, cut the arc at R. (v) Join AQ and produce it..

To construct a triangle when the sum of two sides, the remaining side and the angle between them are given (We assume that the given angle can be constructed with ruler and compass alone) In BC = 3.8 cm, and AB + AC = 6.5 cm (1) Draw BC = 3.8 cm and at B make..

To construct a right angled D ABC when hypotenuse AC = 4 cm and hypotenuse and one acute angle are given (1) Draw a straight line AC = 4cm. (2) Taking OC as diameter, draw a semi circle on AC. (3) At A, construct meeting the semicircle at B. Join BC. (4) Then D ABC is ..

To construct an angle equal to a given angle and a point Q on a line PQ. An angle equal to at Q. (i) With B as centre and any suitable radius draw an arc to cut AB at D and BC at E. (ii) With Q as centre and the same radius, draw an arc to cut PQ at ..