Question
The area of a square field is 4050 sq m. How long in
seconds will a lady take to cross the field diagonally at the rate of 4.5 km/hr?Solution
Area of a square = 1/2 (D) 2 = 4050 where D is diagonal, So D 2 = 8100 So D = 90m So time taken by a lady to cover diagonal = Distance/speed = 90m/4.5 kmph = 90m/{4.5 × (5/18 m/s)} = 72 sec
Which among the following is a major constraint in the rice–wheat system of Indo-Gangetic plains affecting long-term sustainability?
Common polyphagus crop pests are:
A. Desert locust, Schistocerca gregaria (Forskal)
B. Brinjal shoot and fruit borer, Hencinodes orbonates...
When there is crossing over between centromere and gene under consideration, the segregation of that gene takes place during:
What is the wild species of sugarcane?
Which insect order among the following is least likely to be found in association with plants?
Which one of the following crop is otherwise known as Kenaf?
Black cotton soil is best for cotton cultivation because of
Honey bees often sting
Which of the following is NOT correctly matched?
Invisible drought occurs whenÂ
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