1 litre ml

.2 atm. What volume would be necessary to decrease the pressure to 1 atm. at the same temperature ? [Ans: 6.4 litres] 6.Ammonia gas occupies a volume of 450 ml. at a pressure of 720 mm. of Hg. What volume will it occupy at standard pressure at the same temperature? [An..

is =k[A] x [B] y . What is the order of the reaction? 9. A-> B is a reaction of second order. How many times does the rate increse, if concentration of A is doubled? (Ans. 4 times) 10. Rate of the reaction A-> D increases 2.25 times when the concentration of A is increased 2 times. What is th..

What volume of oxygen would be required to burn completely 200 mL of acetylene (C 2 H 2 ) and what would be the volume of carbon dioxide formed ? Solution : c 2 h 2 + o 2 - co 2 + h 2 o On balancing, 2C 2 H 2 + 50 2 4C0 2 + 2H 2 0 2 vols 5 vols 4 v..

Prepare six aqueous solutions in separate containers by dissolving 1 g sodium chloride, 2 g copper sulphate, 2 g glucose, 2 g urea, 5 ml dilute sulphuric acid (a table reagent) and 5 ml dilute sodium hydroxide (a table reagent) separately in 100 ml water...

To Demonstrate that Plants perform Photosynthesis during light and release oxygen.{Fig. 9.2) Requirements : A fresh twig of Hydrilla plant, a glass beaker (500 ml), glass rod (about 10 to 15 cm long), a glass tube, a string,water, a pinch of sodium bicarbonate (NaHC03). [Note : Ke..

If A = | 1] = 1]' and ^ = jj, show that (1) (AB) C-A (BC); (ii) A (B + C) = AB+AC; (iit) (B + C)A -BA + CA A- [J ?].* = [? ?],C = [-J ,.. _ [I Ol [2 0"| _ [*2 + 0 0 + 0"! T2 0" w AB - [l 1J L 1 ML..

? Ans. Anaemia. Q. 35. What is the maximum number of molecules of oxygen which one molecule haemoglobin can carry ? Ans. Four. Q. 36. What is pneumonia ? Ans. Disease of lungs, characterised by accumulation of mucus in lungs. Q. 37. Give two symptoms of bad cold. Ans. (i) Inflammation of ..

(4 - 2.8 = 1.2) 21. 9 g (eq. wt) of aluminium reacts with 8 g of oxygen. 27 g of aluminium reacts with 24 g of oxygen. 22. At. wt of the metal = 32.7 x 2 = 65.4 Molecular formula of the metal chloride = MC12 Molecular weight of MC12 = 65.4 + 2 x 35.5 = 136.4 ( \Y \\ (5xl) 20x 30x- 23.N.WW..

. This is called residual volume of the air. It is there to prevent collapse of the lungs. Q. 15. Give the average values of the following in normal adult humans : (a) Residual volume; (b) Arterial POp (c) Tidal volume; (d) Alveolar POO? (e) Rate of resting respiration; (f) Arterial PC0 2 ; (g) Vit..

27. In the apparatus shown above some gas is being collected is (a) a mixture of C02 and 02 (b) only 02 (c) only C02 (d) nitrogen 28. Which of the following is formed during respiration? (a)02 (b) C02 (c) N02 (d)S02 29. In anaerobic respiration in plants (a) COz is taken in (b) C02..