Sterilisation of water kills which organisms that cause waterborne diseases, making it safe for hospital use?
Correct answer C. Pathogenic bacteria
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Agriculture MCQs
Page 59 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 59 of 135
In cotton, jassids show non-preference for which leaf characteristic?
Correct answer B. Hairiness of leaves
What is the permissible limit of water hardness for a low-pressure boiler?
Correct answer B. 50 mg/litre
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In which crop was the gene-for-gene concept developed?
Correct answer B. Linseed
What is an escape built of masonry or pitched with stones to dispose of surplus water from a tank or reservoir called?
Correct answer C. Paved escape
In lucerne, which trait is associated with resistance to the spotted aphid?
Correct answer B. High saponin in leaves
Surface tension lets a liquid resist tensile stress. What is the surface tension of water in kg/m?
Correct answer D. 0.0075
What is a mutation that kills about half of the individuals carrying it called?
Correct answer C. Sub-lethal mutation
Specific gravity is the ratio of a liquid’s specific weight to that of pure water at standard temperature and pressure. What, therefore, is the specific gravity of pure water?
Correct answer C. 1.0
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What is a dam built to divert water from the main stream into other channels called?
Correct answer B. Diversion dam
In which crop did Stadler first use X-rays to induce mutations?
Correct answer A. Barley
In a primary trisomic, what is the extra chromosome?
Correct answer A. Normal chromosome
Which device can be used to dispose of silt effectively when it settles in a dam reservoir?
Correct answer A. Vortex pipes
What is a change in chromosome number involving the entire set of chromosomes known as?
Correct answer C. Euploidy
What is the waterway built to discharge surplus water from a dam called?
Correct answer B. Spillway
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What type of dam resists the uplift pressure of sub-soil water by its own weight?
Correct answer C. Gravity dam
How is a nullisomic individual represented?
Correct answer A. 2n-2
At what height above the base does the resultant water pressure act on a vertical wall of water depth H?
Correct answer B. H/3
From which part of Colchicum is colchicine extracted?
Correct answer B. Bulb
An area is officially declared drought-affected if its mean annual rainfall is less than what percentage of the annual potential evaporation?
Correct answer D. 85%