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In a laboratory test run, the rate of drying was found to be 0.5 × 10-3 kg/m2.s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m2/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is
Consider the following statements.
1. Rice and tobacco are the major crops of Andhra Pradesh.
2. Rice and tea are the major crops of Paschim Banga.
3. Rice and jowar are the major crops of Odisha.
4. Rice and Coffee are the major crops of Tamil Nadu.
Which of these are correct?
200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 × 10-3 kg/m2.s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m2/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)
Which, among the following crops can be grown between Kharif and summer rice crops in the Tarai region of Uttarakhand ?
Consider the following statements :
With limited amount of fertilizer, allocation of fertilizer to different crops to get maximum profit depends on
1. Price of product
2. Marginal physical products of crops
3. Cost of fertilizer
4. Average products of crops
Which of these statements are correct?
Which of the following crops is grown in India mainly by dry farming?
Statement : The kharif crops have been affected by the insects for consecutive three years in the district and the farmers harvested less than fifty percent of produce during these years.

Courses of Action :
I. The farmers should seek measures to control the attack of insects to protect their crops next year.
II. The Government should increase the support price of kharif crops considerably to protect the economic interests of farmers.
The crop being grown in the dry regions of Rajasthan with the help of Israel is -
During monsoon, which crops are grown in Haryana?
In the given diagram, ABCD is a square and semi-circular regions have been added to it by drawing two semi-circles with AB and CD as diameters. If the total area of the three regions is 350 sq.cm, then the length of the side of the square is equal to : Area mcq question image