A. Cetyle alcohol
B. Methyle alcohol
C. both A and B
D. None of these
Submitted by: Shafiq Rehman
Related Mcqs:
- Which chemical used to prevent evaporation from surface of water in water bodies?
A. Cetyle alcohol
B. Methyle alcohol
C. both A and B
D. None of theseSubmitted by: Shafiq Rehman
- The water loss through transpiration from vegetative and evaporation from soil surface is known as__________________?
A. Evaptranspiration
B. Transpiration
C. Evaporation
D. Guttation - Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:
A. Mull
B. Mulch
C. Mycorrhizae
D. MuckSubmitted by: Shafiq Rehman
- Which one of the following plants prevent soil erosion and reclaim water logged soils____________________?
A. Ber
B. Guava
C. Pome granate
D. All the above - Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:
A. Extremely low
B. Extremely high
C. Very little
D. None of theseSubmitted by: Shafiq Rehman
- The application of science and engineering process to increase shelf life of food and prevent deterioration is known as___________________?
A. Food processing
B. Food science
C. Food technology
D. Food preservation - To prevent the growth of molds in bread ind other backed food which preservative is used___________________?
A. Sodium acetate
B. Potassium acetate
C. Calcium acetate
D. All the above - To prevent deterioration of food from microorganisms which one of the following preservatives are used _____________________?
A. NaCl
B. Sulpher dioxide
C. Nitrate
D. All the above - The wearing away of the land surface by wind, water, ice or other geological agents is called____________________?
A. Seepage
B. Soil erosion
C. Soil contamination
D. All the above - Small rivulets or finger like channels formed on the surface of earth by action of water, these channels are of small depth & can be leveled by tillage operations is:
A. Gully erosion
B. Sheet erosio.
C. Stream bank erosion
D. None of theseSubmitted by: Shafiq Rehman