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Consider the following types of erosion
1. Gully erosion
2. Splash erosion
3. Normal erosion
4. Rill erosion
5. Sheet erosion
The correct sequence in terms of the increasing order of soil loss from the field due to these types of erosion is
Which of the following statements are correct statements? (a) Masonry check dams are used for controlling gully erosion and water harvesting. (b) soil cloudiness, surface roughness, roughness, soil curst and soil moisture are the main factors affecting water erosion. (c) In Agronomic measures water erosion is controlled by appropriate crops and cropping systems. (d) Stubble mulching and minimum tillage be practiced to minimise wind erosion.
Three friends want to hire a taxi for a trip. The taxi owner provides them with following three options: A. You can hire the taxi without an accompanying driver. This would cost you Rs. 2500 per day. Driver can be arranged from another agency for Rs. 500 per day. B. You can hire the taxi with driver from the first agency. This would cost you Rs. 2800 per day. But driver will have to be provided relief fund of Rs. 250 per day if total distance traveled exceeds 1500 KM. C. You can hire the taxi without an accompanying driver. This would cost you Rs. 2500 per day. Driver can be arranged from another agency for 50 paise per KM.  If the friends plan to travel to a place at a distance of 1500 kms and come back the next day, which tariff option should they choose? 
Three friends want to hire a taxi for a trip. The taxi owner provides them with following three options:  A. You can hire the taxi without an accompanying driver. This would cost you Rs. 2500 per day. Driver can be arranged from another agency for Rs. 500 per day.  B. You can hire the taxi with driver from the first agency. This would cost you Rs. 2800 per day. But driver will have to be provided relief fund of Rs.250 per day if total distance traveled exceeds 1500 KM.  C. You can hire the taxi without an accompanying driver. This would cost you Rs. 2500 per day. Driver can be arranged from another agency for 50 paise per KM.  If they had planned to travel total of 6000kms in 5 days. Which option would have been better? 
Read the given paragraph carefully and answer the following question.  Soil erosion is a naturally occurring process that affects all land forms. It refers to the wearing away of a field's topsoil by natural physical forces of water and wind. Topsoil, which is high in organic matter, fertility and soil life, majorly contributes to the growth of crops. Soil erosion reduces cropland productivity and causes the pollution of watercourses, weltlands and lakes. Which of the following options does NOT show steps taken to prevent soil erosion?
Consider the following statements and choose the correct answer:
1. Roots of grasses are an excellent binding material and keep the soil intact
2. Disruption of the grass cover by the plough loosens the soil and makes it vulnerable to removal by the force of rain or strong winds
3. Tilling or grazing on slopes or semi-arid soils decreases the rate of soil erosion
4. Soil erosion is especially high in Nepal, India, China, Australia, Spain, USSR, USA and Central Africa
The average weight of 20 boys is 22.5 kg and that of 25 girls is 18 kg on a school bus. The average weight of all 45 students is equal to the 1/3rd of the weight of the bus driver. What is the change in the average weight of the bus including the driver if the old driver is changed with a new one whose weight is 6 kg more than the old driver?
Consider the following statements and find the correct one.
1. Prolonged wet and dry spells causes soil erosion in Central Bengal.
2. Spring season in Bengal experiences no rainfall and pleasant weather conditions.
3. Silviculture is a preventive measure of soil erosion in some districts of West Bengal.
A teacher is trying to introduce her class VII students to different kinds of soil. She begins by introducing the names of three kinds of soil i.e. sandy soils, clayey soil and loamy soil. She explains the properties of each soil in term of its particulate nature. She then demonstrates one sample of each kind of soil and shows the students the difference in percolation rate of an examples. How would you evaluate this approach from an inquiry oriented perspective?
Soil erosion has affected large tracts of our country. Which is a state with the largest area under soil erosion?