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Start learning 50% faster. Sign in nowLet speed of boat in upstream and downstream be ‘7x’ km/h and ‘9x’ km/h respectively. 49/7x + 81/9x = 4 7/x + 9/x = 4 16 = 4x x = 4 Speed of boat in still water = (7x + 9x)/2 = 8x = 8 × 4 = 32 km/h Desired time = 128/32 = 4 hours
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as
Chemically most of the sand grains are
Which of the following represents photosynthesis?
The situation in a production process where each successive unit of input contributes more output than the previous unit is explained by the law of:
Which of the following statement is incorrect about tropic and nastic movements in plant?
Which of the following statements is/are true about the relationship between soil fertility and nutrient cycling?
Statement A: Nutrient cycling r...
Saline soil having
(A) pH<8.5
(B) E.C.>4
(C) ESP<15
(D) Physical condition - Flocculated
Choose the correct answer from the options given below:
Tomato damping off is caused due to ____
Match List I with List II :
Choose the correct answe...
The Rural Infrastructure Development Fund (RIDF) was established by which organization?