Question 621 Maximum absorption of water by roots takes place through the ? A) Zone of elongation B) Zone of maturation C) Root hair D) Root cap No Details
Question 622 Which one of the following pairs of elements and the mineral from which they are obtained is not correctly matched? A) Sulphur - Pyrite B) Boron - Siderite C) Zinc - Calamine D) Copper - Malachite No Details
Question 624 Mass flow of gases into the soil occurs due to the difference of? A) Surface tension B) Pressure gradient C) Both of the above D) None of the above No Details
Question 627 Lithosphere contains about _______ sand stone and 0.25% limestone? A) 0.75% B) 0.25% C) 2.25% D) 10.25% No Details
Question 628 Limonite is formed by the process of? A) Oxidation B) Carbonation C) Hydrolysis D) None of these No Details
Question 629 Lime is used for reclamation of? A) Acidic soil B) Sodic soil C) Both 1⃣ & 2⃣ D) None of these No Details