1336: Living organisms require at least 27 elements of which 15 are metals. Among these, those required in major quantities include
(a) Potassium, Manganese, Molybdenum & Calcium
(b) Potassium, Molybdenum, Copper & Calcium
(c) Potassium, Sodium, Magnesium & Calcium
(d) Sodium, Magnesium, Copper & Manganese
1337: Metastasis is the process by which
(a) cells divide rapidly under the influence of drugs
(b) cancer cells spread through the blood or lymphatic system to other sites or organs
(c) the chromosomes in cell nuclei are attached to the spindle before moving to the anaphase poles
(d) cancer cells are successfully inhibited to divide any further
1338: Consider the following pairs :
Vaishnava Saints Region of strong following
1. Ramanujacharya : South India
2. Chaitanya : Central India
3. Vallabhacharya : Gujarat and Braj area
4. Ramanand : North India
Of these pairs :
(a) 1, 2 and 3 are correctly matched
(b) 2, 3 and 4 are correctly matched
(c) 1 and 4 are correctly matched
(d) 1, 3 and 4 are correctly matched
1339: Apart from Tamil Nadu (Neyveli), lignite is found at:
(a) Gujarat
(b) Uttar Pradesh
(c) West Bengal
(d) Orissa
1340: Salinization occurs when the irrigation water accumulated in the soil evapo- rates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land?
(a) It greatly increases the crop production.
(b) It makes some soils impermeable.
(c) It raises the water table.
(d) It fills the air spaces in the soil with water.